Nov. 2022, （学生の受賞）日本鉄道サイバネティクス協議会 学生優秀論文優秀賞, 日本鉄道サイバネティクス協議会
Japan society

Mar. 2022, 日本機械学会交通・物流部門 部門貢献表彰

Mar. 2022, （学生の受賞）日本機械学会交通・物流部門 優秀ポスター講演賞, 車両運動解析に基づく二段勾配クロッシングの輪重変動・摩耗抑制効果の検討, 日本機械学会
桑名和希,道辻洋平,渡邉真一,髙橋浩一朗
Japan society

Mar. 2022, （学生の受賞）日本機械学会交通・物流部門 優秀ポスター講演賞, 空気ばね系が曲線通過における鉄道車両姿勢に及ぼす影響の分析, 日本機械学会
中嶋良樹,道辻洋平,喜多成充,國松祐樹
Japan society

Mar. 2022, 日本機械学会交通・物流部門貢献表彰
Japan society

Nov. 2021, （学生の受賞）日本鉄道サイバネティクス協議会 学生優秀論文優秀賞, 日本鉄道サイバネティクス協議会
Japan society

Mar. 2021, （学生の受賞）日本機械学会若手優秀講演フェロー賞, 単眼車載カメラを用いた鉄道車両のアクティブ操舵台車（スケールモデル走行装置を用いた検証実験）, 日本機械学会
天野倉一誠,道辻洋平,須田義大
Japan society

Sep. 2020, 日本機械学会機械力学・計測制御部門 パイオニア賞

Aug. 2020, （学生の受賞）日本機械学会第28回茨城講演会，優秀講演発表賞, 高齢運転者の運転技能評価プログラムに関する研究, 日本機械学会
倉部幸樹,道辻洋平,嘉藤俊介,照井孝一
Japan society

Aug. 2020, （学生の受賞）日本機械学会第28回茨城講演会，優秀講演発表賞, 前方注視カメラを用いた鉄道車両アクティブ操舵台車, 日本機械学会
天野倉一誠,道辻洋平
Japan society

2019, 日本機械学会教育賞, 日本機械学会

2018, 自動車技術会技術部門貢献賞, 自動車技術会

2015, 日本機械学会交通・物流部門 部門貢献表彰

2013, STECH2012 Best poster award
International society

2009, 第18回日本機械学会交通・物流部門大会賞

2007, 第16回日本機械学会交通・物流部門大会 優秀講演論文表彰

2007, 第14回 鉄道技術連合シンポジウム ショットガンセッション優秀賞

2006, Asian Conference on Multibody Dynamics(ACMD2004) Student Award

Simulation-based estimation of wheel/rail friction coefficient and wear number considering results of full-scale roller-rig test
Yosuke ICHIYANAGI; Yohei MICHITSUJI; Akira MATSUMOTO; Yasuhiro SATO; Hiroyuki OHNO; Seigo OGATA; Masuhisa TANIMOTO; Tomoki FUKUSHIMA; Takuya MATSUDA; Daisuke SHINAGAWA, Japan Society of Mechanical Engineers
Mechanical Engineering Journal, 15 Jun. 2023, [Reviewed]

〔Major achievements〕Improved curving performance using unconventional wheelset guidance design and wheel-rail interface – present and future solutions
Yoshihiro Suda; Yohei Michitsuji
Vehicle System Dynamics (International Journal of Vehicle Mechanics and Mobility), 02 May 2023, [Reviewed], [Invited]

〔Major achievements〕車載ステレオカメラを活用した鉄道車両前方の障害物検知（スケールモデル実験車両による検証）
柴田拓実,道辻 洋平
日本機械学会論文集, Feb. 2023, [Reviewed]

〔Major achievements〕横風による車両挙動の空気ばね圧を用いた評価
喜多 成充,西村 和彦,道辻 洋平
日本機械学会論文集, Jan. 2023, [Reviewed]

〔Major achievements〕鉄道車両における再粘着制御時の台車振動に起因する空転誤検知現象の考察
山口 泰平,道辻 洋平,牧島 信吾,髙橋 諭
日本機械学会論文集, 20 Dec. 2021, [Reviewed]

Estimation of coefficient of friction between flange and rail utilizing vehicle dynamics simulation (Investigation based on roller-rig test with different lubrication condition)
MICHITSUJI Yohei; MATSUMI Takanori; ICHIYANAGI Yosuke; MATSUMOTO Akira; SATO Yasuhiro; OHNO Hiroyuki; OGATA Seigo; TANIMOTO Masuhisa; FUKUSHIMA Tomoki; MATSUDA Takuya, Lead,

The coefficient of friction (COF) between the outer rail and the leading-outside wheel flange of a railway bogie running on sharp curved track is an important parameter for the progress of wheel/rail wear and running safety. Therefore, it is desired to grasp the actual state of COF of wheels especially at the leading-outside wheel flange. In the author's previous studies, a roller-rig experiment was conducted with changing lubrication condition of each wheel of the bogie to figure out relationship between lubrication conditions and wheel/rail contact forces such as tangential, lateral and vertical directions. In this paper, a method to estimate the value of COF of leading-outside wheel with look-up tables built by repetitive numerical simulations is explained. In the construction of the look-up tables, friction coefficients for each wheel in the numerical simulation model are changed while collecting calculated wheel/rail contact forces. A railway bogie running on roller-rig test is considered for both numerical simulations and experiment with different lubrication condition, therefore look-up tables are built with a half-vehicle model running on the roller-rig. By inputting the wheel/rail contact forces measured in roller-rig test into the look-up tables built by simulations, and the COF of leading-outside wheel flange is estimated. The result shows that the lubrication condition of leading-outside wheel flange can be estimated by the proposed method especially when the value of COF is large and is useful for the detection of high COF condition.

, The Japan Society of Mechanical Engineers
Transactions of the JSME (in Japanese), 26 Mar. 2021, [Reviewed]

Analysis of vibration transmissibility of railway vehicles while transiting curves with lateral track irregularity
Hidai; M. Michitsuji; Y, JSME
Mechanical Engineering Journal, Nov. 2020, [Reviewed]

Estimation of Friction Coefficient Between Outside Wheel Flange and Rail Considering Influence of Wheel/Rail Wear
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Daisuke Yamaguchi; Masuhisa Tanimoto; Takuya Matsuda; Takanori Matsumi, © 2020, Springer Nature Switzerland AG. The running safety of a railway vehicle against flange-climb derailment is evaluated with the derailment coefficient. A monitoring bogie, which can measure the derailment coefficient during commercial operations, has been developed and condition monitoring of derailment coefficient has been realized. However, the critical derailment coefficient is determined by the friction coefficient between the leading outside wheel flange and rail, which changes due to wayside rail lubrications. In order to evaluate the running safety more accurately, the present paper proposes an estimation method of the friction coefficient of the leading outside wheel flange utilizing the multibody dynamics simulation. By changing the friction condition and repeating simulation in sharp curves, relationship between the given friction coefficients and the calculated wheel/rail contact forces is derived, and look-up table is created from the results. The friction coefficient of the outside wheel can be regressively estimated by inputting the measured contact forces collected with the monitoring bogie into the look-up table. This paper also considers the influence of wheel/rail profiles on the proposed method and presents a modified look-up table made from simulations with the measured wheel/rail worn profiles.
Lecture Notes in Mechanical Engineering, 2020, [Reviewed]

Safety measures against flange-climb derailment in sharp curve-considering,friction coefficient between wheel and rail –
Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Yasuhiro Sato; Hiroyuki Ohno; Masuhisa Tanimoto; Atsushi Iwamoto; Takuji Nakai, Corresponding, © 2019 Elsevier B.V. To estimate the safety against flange-climb derailments the safety measures based on Nadal's formula have been used in the world. These measures are effective, but the safety margin against flange-climb cannot be estimated quantitively because the actual friction condition between rail and wheel flange cannot be measured by conventional methods. In this paper, the authors propose a new method for the estimation of the friction condition between rail and wheel flange, and using the estimated value of the friction coefficients, a safety measure, the “flange-climb index” (FCI), is proposed. The value of FCI can evaluate the margin for the safety against flange-climb occurrences quantitatively according to the friction conditions., Elsevier B.V.
Wear, 13 Jun. 2019, [Reviewed]

ヒヤリハットデータベースを用いた信号交差点でのドライバ判断支援システムの評価
風間 晃輝; 道辻 洋平; 丸茂 喜高, Corresponding, 日本機械学会
日本機械学会論文集, 12 Jun. 2019, [Reviewed]

予測された信号現示を路面に呈示する運転支援システムの検討　　　　　　　　　　　　　　　
丸茂喜高; 山﨑光貴; 鈴木宏典; 道辻洋平, Last
自動車技術会論文集, Jun. 2019, [Reviewed], [Invited]

Running position matching for the monitoring bogie and temporal subtraction analysis of derailment coefficient
Y.Ichiyanagi; Y.Michitsuji; A.Matsumoto; Y.Sato; H.Ohno; S.Ogata; M.Tanimoto; A.Iwamoto; T.Fukushima; T.Nakai, Corresponding,

The derailment coefficient, which is calculated based on the wheel-rail contact forces, indicates the running safety of a railway vehicle with respect to flange climb derailment. The value of the derailment coefficient changes constantly due to numerous factors associated with the vehicle and track conditions while the vehicle runs on a service line. Therefore, it is desirable to monitor the state of the wheel/rail contact in order to ensure the running safety. Recently, a new monitoring bogie, which can measure the derailment coefficient during commercial operations, has been developed and introduced into some service lines. Large-scale data have been collected by this monitoring bogie. In this paper, the temporal subtraction analysis is carried out for preparing appropriate plan for reducing the derailment coefficient based on these data. In the analysis, the vehicle running position is important for accurate calculation of the difference between two waveforms. However, the vehicle running position contains errors because of the accumulated error of integral calculation of the vehicle velocity. The present paper proposes a method which modifies the running position along track so that the two waveforms are well matched. The proposed method is based on DP matching, and the waveforms of the track irregularity of twist estimated by the monitoring bogie are used in the method. After DP matching, an example of temporal subtraction analysis of the derailment coefficient between two periods is performed. Finally, by using the long-term measurements acquired by the monitoring bogie, the monthly variation of the derailment coefficient for a certain spot on the track is shown as a practical example.

, The Japan Society of Mechanical Engineers
Mechanical Engineering Journal, 28 Feb. 2019, [Reviewed]

Derailments of freight wagons caused by rolling and related considerations　　　　　　　　　　　　　　　
Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Kohei Mizuno, Three derailment accidents occurred on the Esashi Line in 2012–2014 and in order to find the causes of these accidents JTSB carried out train running tests and numerical simulations by SIMPACK. The results of the tests and the simulations showed the series of accidents were caused by multiple factors, such as “insufficient damping of bolster dampers of freight wagons”, “partly large track irregularities for freight train running” and “unbalance mass and rather high gravity center of freight loading”. These factors are common, but the contribution of each factor is different in each accident. And by additional analyses it is found that “medium loading” condition of wagons increases the rolling resonance due to insufficient damping of bolster dampers in such region, and the rolling angle of the 3rd wheelset is increased due to the torsional flexibility of the wagon body compared with the 1st wheelset of the freight wagon., CRC Press/Balkema
The Dynamics of Vehicles on Roads and Tracks, 2018

Estimation of friction coefficient between outside flange and rail surface
Takuya Matsuda; Fujio Masuzawa; Takashi Maeda; Atsushi Iwamoto; Kosuke Matsumoto; Masuhisa Tanimoto; Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Yasuhiro Sato; Hiroyuki Ohno; Takuji Nakai, © 2018 TU Delft. The friction coefficient between wheel and rail affects curving performance significantly. For example, low friction coefficient leads wheel slip and skid, otherwise high friction coefficient leads derailment and wheel/rail wear. In these friction coefficients, the authors focus on the friction coefficient of flange of outside wheel of leading axle, because the friction of this part is very important for the wear of flange and rail side. First capability of finding the friction of this part was investigated in the bench test, and next the way for identifying friction coefficient of this part was developed by using Multi Body Dynamic (MBD)simulation.
Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018, 2018, [Reviewed]

Development of the condition monitoring tool based on wheel-rail contact forces collected by the PQ monitoring bogie
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Masuhisa Tanimoto; Atsushi Iwamoto; Tomoki Fukushima; Daisuke Shinagawa; Kensuke Nagasawa, © 2018 Taylor & Francis Group, London. The derailment coefficient is used to grasp the risk of the flange climb derailment. The derailment coefficient changes due to rail and vehicle conditions. The PQ monitoring bogie that can collect the derailment coefficient during commercial operation has been developed and a large-scale data is collected. However, there is no efficient method for handling such a data. This paper shows an analysis tool that can easily handle such a large-scale data and detect the place where the derailment coefficient increases. In addition to the development of the tool, a method to estimate the track irregularity of twist is proposed and evaluated with a multi-body dynamics simulation using SIMPACK. The analysis tool can provide sufficient information regarding friction characteristics and track irregularity to the data analyst.
The Dynamics of Vehicles on Roads and Tracks, 2018, [Reviewed]

Condition monitoring system based on wheel-rail contact forces
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Masuhisa Tanimoto; Atsushi Iwamoto; Tomoki Fukushima; Takuji Nakai, © 2018 TU Delft. The derailment coefficient indicates the running safety against the flange-climb derailment. The value of the derailment coefficient is influenced by track and vehicle conditions. A monitoring bogie which can collect the derailment coefficient during commercial operations has been developed. However, there is no efficient method for handling a large-scale data collected by the monitoring bogie. This paper presents an analysis tool which can easily handle such data and detect a place where the derailment coefficient increases. The tool provides sufficient information regarding the friction characteristics and the estimated track irregularity utilizing the monitoring bogie.
Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018, 2018, [Reviewed]

Safety measures against flange-climb derailment in sharp curve
Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Yohei Michitsuji; Yosuke Ichiyanagi; Masuhisa Tanimoto; Atsushi Iwamoto; Takuji Nakai, © 2018 TU Delft. To estimate the safety against flange-climb derailments the safety measure based on Nadal's formula has been used. This measure is effective, but the actual friction condition between rail and wheel flange is not considered. In this paper, the authors propose a new safety measure, "flange-climb index" (FCI) which considers the actual wheel flange friction coefficient and quantitatively estimates the margin for safety against flange-climb occurrences.
Proceedings of the 11th International Conference on Contact Mechanics and Wear of Rail/wheel Systems, CM 2018, 2018, [Reviewed]

Estimating method of the curve where flange wear occurs by utilizing continuous data through the PQ monitoring bogie on Tokyo Metro’s commercial line.
松田 卓也; 佐藤 安弘; 大野 寛之; 荻野 智久; 渡邉 真一; 新井 逸郎; 米原 善秀; 谷本 益久; 松本 陽; 道辻 洋平; 一柳 洋輔, The friction coefficient between wheel and rail affects curving performance significantly. For example, low friction coefficient leads wheel slip and skid, otherwise high friction coefficient leads derailment and wheel/rail wear. In these friction coefficients, the authors focus on the friction coefficient of flange of outside wheel of leading axle, because the friction of this part is very important for the wear of flange and rail side. First capability of finding the friction of this part was investigated in the bench test, and next the way for identifying friction coefficient of this part was developed by using Multi Body Dynamic (MBD)simulation. Furthermore, as an application example, we propose a method to prevent from flange wear and estimate., The Japan Society of Mechanical Engineers
The Proceedings of the Transportation and Logistics Conference, 2018, [Reviewed]

ヘッドアップディスプレイを用いた信号交差点でのドライバ判断支援システム　　　　　　　　　　　　　　　
丸茂喜高; 山﨑光貴; 三浦裕弥; 道辻洋平, Last
日本機械学会論文集, 2018, [Reviewed]

走行安定性と曲線通過性能を両立する傾斜軸EEF 台車の提案と運動解析
道辻洋平; 志賀亮介; 須田義大; 林 世彬; 牧島信吾, Lead,

It is important for railway bogies to get compatibility between curving performance and running stability. Utilizing independently rotating wheels may be an effective solution. The EEF bogie proposed by Dr.Frederich in late 1980th shows good curving performance making use of the gravity restoring force generated by the tread gradient of independently rotating wheels. However, the bogie gives rise to a kind of hunting motion as the vehicle running velocity increases. In this paper, an effective modification of the EEF bogie which solves the hunting motion is mentioned. The solution is to incline both wheel-axles while adjusting the tread shape of each wheel. In this paper, the EEF bogie with inclined wheel-axles is firstly proposed and analytically evaluated by the MBD simulation. Since the newly proposed bogie has complicated structures, a precise modeling of the bogie is mentioned in detail. From the result of eigenvalue analysis, proposed bogie can dramatically improve the hunting stability as compared to the conventional EEF bogie. In addition, the proposed bogie has excellent curving performance in tight curve section equivalent to the conventional EEF bogie. As those results, it is possible to achieve both high speed hunting stability and curving performance utilizing the proposed bogie unit in the vehicle.

, 日本機械学会
日本機械学会論文集, Jul. 2017, [Reviewed]

Condition monitoring system of wheel-rail contact force utilizing PQ monitoring bogie (Basic design of the analysis tool and analysis of the derailment coefficient)
ICHIYANAGI Yosuke; YANO Kenta; SHINAGAWA Daisuke; NAGASAWA Kensuke; MICHITSUJI Yohei; MATSUMOTO Akira; SATO Yasuhiro; OHNO Hiroyuki; MORI Hirotaka; TANIMOTO Masuhisa; IWAMOTO Atsushi; FUKUSHIMA Tomoki, Corresponding,

The derailment coefficient is calculated from wheel-rail contact forces and it indicates the running safety of the railway vehicle especially in sharp curves. The derailment coefficient is affected by many factors such as the track irregularities, the vehicle parameters and the friction characteristics between wheel and rail. Therefore, monitoring of the derailment coefficient is desired to evaluate the running safety of the vehicle. Recently, a new monitoring bogie which can collect time series data of the derailment coefficient during commercial operation has been developed, and a large scale data is collected. However, there was no way to use such a data efficiently because an efficient method and an analysis tool have not been developed. In this research, a new analysis tool which can easily handle a large scale data and assist analysis of the derailment coefficient has been designed using MATLAB. In addition to measuring the derailment coefficient, the wheel load reduction and the track irregularity of twist are also measured. The tool can extract points where the derailment coefficient increases from a large scale data, and quickly show detailed information. On the basis of the information displayed on the user-interface, the data analyst can identify factors that increase the derailment coefficient. Not only analysis focused on a particular curve, but also the tool has the function for comparison of some curves. Analysis of the time change of the derailment coefficient is also possible. This paper shows the basic design of the analysis tool and gives some examples of analysis using this tool.

, The Japan Society of Mechanical Engineers
Transactions of the JSME (in Japanese), Mar. 2017, [Reviewed]

Prediction for Obstacle Avoidance Route of Pedestrian using Stochastic Distributions
TAKANASHI Hiroyuki; ABE Katsuya; MICHITSUJI Yohei; SHINO Motoki; RAKSINCHAROENSAK Pongsathorn; HAYASHI Ryuzo,

This report proposes a modeling method for predicting a pedestrian walking route in stochastic manner. To represent pedestrian motion in naturally, a stochastic model is suitable than deterministic one. The stochastic model is derived from the walking experiment where a pedestrian avoids some obstacle in natural walking. Using the loci obtained from the experiment, we first represent the walking speed and walking direction at local region in the form of histogram. Then we approximate the histogram by continuous distributions. As a result, we obtain the stochastic model representing the natural motion of a pedestrian. The effectiveness of the proposed method is examined by comparing the predicted locus with real walking one.

, The Japan Society of Mechanical Engineers
The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2017

路肩の障害物回避における歩行経路の確率的予測モデル
高梨宏之; 阿部勝哉; 道辻洋平; 小竹元基; ポンサトーン; ラクシンチャラーンサク; 林隆三, Last,

This paper describes a modeling method for predicting a walking route of a pedestrian in a stochastic manner. We consider one of the most typical situations where a pedestrian walks along to a sidewalk, and then some obstacle exists in front of the pedestrian. To represent the walking route of the pedestrian during the avoidance action, a stochastic model is suitable than deterministic one. The stochastic model is derived from the walking experiment where a pedestrian avoids some obstacle in natural walking. Based on the loci obtained from the experiment, the pedestrians walking speed and walking direction at any local area was approximated by Gaussian and Beta distribution function, respectively. As a result the walking route of a pedestrian can be represented in a stochastic manner. The estimated output of the model is examined by comparing with two real walking loci that were obtained from near-miss incident database. One examination scene is avoidance of a parked vehicle, and the other is of parked bicycle on the roadside. By the numerical simulation, we obtained the results that the both real walking routes are included within the 3-sigma ranges of the estimated output of 500 trials.

, The Japan Society of Mechanical Engineers
日本機械学会論文集, 2017, [Reviewed]

同一台車内での車輪・レール間摩擦係数の差異が走行安全性に及ぼす影響（台上試験による実測と数値解析の比較）
道辻洋平; 石井翔; 松本 陽; 大野寛之; 佐藤安弘; 緒方正剛; 谷本益久; 岩本 厚; 福島智樹; 品川大輔, Lead,

It is important to secure running safety of railway vehicles against wheel-climb derailment accidents. The safety is often discussed according to the value of derailment coefficients for the leading outside wheel of a railway bogie running on sharp curves. Therefore, the detailed force induced mechanism which influences the value of derailment coefficients should be clarified. One of the most dominant factors affecting the value of derailment coefficients is magnitudes of the coefficient of friction (COF) between wheel and rail. Since the gauge corner of the outer rail and the top of the inner rail are lubricated at some sharp curves, COF of wheels of a bogie are different from each other and show complicated variation. In this study, the effect of lubrication for the running safety of the railway bogie is investigated while considering the detailed force induced mechanism of the derailment coefficient increase utilizing both multibody dynamics simulations and experiments. Experiments and simulations are conducted with a roller-rig test equipment under various conditions of wheel/rail lubrication. In this research, a method to identify whether the bogie is in suitably lubricated condition in terms of running safety is discussed. The proposed method making use of the longitudinal force measurement with mono-link type axle supporting device is mentioned.

, The Japan Society of Mechanical Engineers
日本機械学会論文集, 2017, [Reviewed]

路面への情報呈示による信号交差点でのドライバ判断支援システム
丸茂 喜高; 中野 尭; 中西 智浩; 道辻 洋平, Last,

This study examines the driver assistance system to judge whether a passage (GO) or a stop (NOGO) at a signalized intersection ahead. The assistance system indicates the evaluation indices on the road ahead virtually. The proposed assistance system informs a driver visually of the distance which the vehicle can traverse by maintaining the current velocity until the red signal onset using the signal information. If the remaining distance to the intersection is longer than the indicated distance, the system also indicates a stopping distance by assuming the ordinary deceleration. The driving simulator experiments are carried out to evaluate the proposed assistance system. The assistance system encourages the earlier deceleration before turning to the amber signal and prevents the emergency braking behavior or the risky passage through the intersection. In addition, the assistance system shortens drivers' reaction time to the emergency deceleration of the preceding vehicle compared with the onboard monitor indication in the own vehicle. Indicating evaluation indices on the road ahead virtually helps the driver to decelerate earlier and avoid the higher deceleration. These effects make it possible to suppress the collision risk to the preceding vehicle and contribute the safety driving.

, The Japan Society of Mechanical Engineers
日本機械学会論文集, 02 Nov. 2016, [Reviewed]

Development of an efficient analysis tool for the PQ monitoring bogie
ICHIYANAGI Yosuke; OHNO Hiroyuki; NAGASAWA Kensuke; MICHITSUJI Yohei; TANIMOTO Masuhisa; IWAMOTO Atsushi; FUKUSHIMA Tomoki; YANO Kenta; SHINAGAWA Daisuke; MATSUMOTO Akira; SATO Yasuhiro,

Derailment coefficient is the ratio of the lateral to the normal force, and it represents the running safety of the railway vehicle in sharp curves. The value is affected by both track irregularities and the friction coefficient between wheel and rail. As the value of friction coefficient varies widely, continuous monitoring of derailment coefficients on service trains is desirable in order to ensure the safely running. Recently, the PQ monitoring bogie which can continuously collect derailment coefficients has been developed, and far amount of collected data during commercial operation has been accumulated. Therefore, efficient analysis to treat such a large scale data is required. In this research, a data analysis tool which can easily handle a large scale data while identifying the point where the derailment coefficient increases. In the tool, estimated irregularity of twist and friction characteristics between wheel and rail are estimated. This paper shows some examples of analysis while explaining the user-interface and its function to demonstrate the effectiveness of the developed tool for PQ monitoring bogie.

, The Japan Society of Mechanical Engineers
The Proceedings of Mechanical Engineering Congress, Japan, 2016, [Reviewed]

Temporal subtraction processing of derailment coefficient collected with the monitoring bogie
Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Hirotaka Mori; Atsushi Iwamoto; Tomoki Fukushima; Kenta Yano; Daisuke Shinagawa; Masuhisa Tanimoto; Kensuke Nagasawa, A typical index to evaluate the running safety of railway vehicles is the derailment coefficient. Recently, a new type of monitoring bogie which monitors derailment coefficients during commercial operations has been developed. In order to perform predictive maintenance of tracks utilizing the new monitoring bogie, temporal subtraction processing, which is commonly used in medical fields, seems effective to identify yearly changes. However, the distance along the track, which is estimated by integrating the vehicle velocity, contains errors because the wheel radius gradually changes over a long period. In this paper, a method to correct the running distance in high precision by utilizing the bogie twist corresponding to estimated twist irregularity of the track is proposed. The way to conduct temporal subtraction processing of the derailment coefficient is proposed, and the potential usefulness of the processing for track maintenance is discussed., CRC PRESS-TAYLOR & FRANCIS GROUP
DYNAMICS OF VEHICLES ON ROADS AND TRACKS, 2016, [Reviewed]

Train-overturned derailments due to excessive speed - Analysis and countermeasures
Akira Matsumoto; Yohei Michitsuji; Katsuya Tanifuji, The "Train-Overturned Derailment" is not so complex in the mechanism, but human damage in the accidents is excessively large. We have not a few number of such kind of accidents within 10 years in the world. It is very regrettable for us not to share the information of investigation results and the countermeasures of Japanese Fukuchiyama-line accident in 2005, and not to prevent recurrences of a same kind of accidents. In this paper the authors introduce the outline of the Japanese case, and report the results of comprehensive considerations on the recurrent same kind accidents in other countries., CRC PRESS-TAYLOR & FRANCIS GROUP
DYNAMICS OF VEHICLES ON ROADS AND TRACKS, 2016, [Reviewed]

Analysis of Train-Overturn Derailments caused by,Excessive Curving Speed　　　　　　　　　　　　　　　
Akira Matsumoto; Yohei Michitsuji and Yuki Tobita, Corresponding, Saxe-Coburg Publications
International Journal of Railway Technology, 2016, [Reviewed]

Actual states of wheel/rail contact forces and friction on sharp curves – Continuous monitoring from in-service trains and numerical simulations
A.Matsumoto; Y.Sato; H.Ohno; M.Shimizu; J. Kurihara; T.Saitou; Y.Michitsuji; R.Matsui; M.Tanimoto; M.Mizuno, Corresponding, The authors researched and developed a new measurement method that can continuously measure the contact forces and derailment coefficients at all curves of commercial lines. This new method can determine the derailment coefficients, which change according to the friction coefficients and other factors, using the measuring system on in-service trains. In this paper, the analysis results for actual curve data collected on commercial subway lines are introduced. Additionally, parameters that are influential on the changes of the derailment coefficients, such as "friction" and "track irregularity," are discussed using the regression analysis on the accumulated data with the newly developed system. (C) 2014 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE SA
Wear, 2014, [Reviewed]

信号切り替わり時の横断歩行者に対する運転リスク評価指標の提案
道辻洋平; 大竹正俊; RaksincharoensakPongsathorn, Lead, 自動車技術会
自動車技術会論文集, 2013, [Reviewed]

スケールモデル軌条輪による逆踏面勾配車輪を有する独立回転輪軸の走行安定性解析　　　　　　　　　　　　　　　
江尻賢治; 道辻洋平; 須田義大; 林 世彬; 杉山博之, Corresponding
日本機械学会論文集, 2013, [Reviewed]

Next Generation Unconventional Trucks and Wheel-Rail Interfaces for Railways　　　　　　　　　　　　　　　
Y.Suda; Y.Michitsuji and H.Sugiyama, Corresponding
International Journal of Railway Technology, 2012, [Reviewed]

Self-steering ability of the proposed new concept of independently rotating wheels using inverse tread conicity
Y.Suda; W.Wang; M.Nishina; S.Lin and Y.Michitsuji, Last, This paper proposes the use of independently rotating wheels with inverse tread conicity to get self-steering ability without any complex bogie structure. The effectiveness of the vehicle with two single-axle bogies that use two independently rotating wheel units with inverse tread conicity is proved by the 1/10 scale model experiment. The full vehicle model is made by means of multibody dynamics software SIMPACK (TM). Both the experiment and simulation results show that the proposed inverse tread with independently rotating wheels have good performance. Running stability and curving ability of the proposed inverse tread for independently rotating wheels can be realised by using the semi-active yaw damper., TAYLOR & FRANCIS LTD
Vehicle System Dynamics, 2012, [Reviewed]

Continuous observation of wheel/rail contact forces in curved track and theoretical considerations
A.Matsumoto; Y.Sato; H.Ohno; M.Shimizu; J.Kurihara; M.Tomeoka; T.Saitou; Y.Michitsuji; M.Tanimoto; Y.Sato and M.Mizuno, Corresponding, By using non-contact gap sensors equipped on non-rotating parts of a bogie, a new measuring method of wheel/rail contact forces has been developed. The developed system has been verified to have sufficient durability for continuous measurement on in-service trains and sufficient practical accuracy after various stand tests and train running tests. After a long-period of continuous measurement on a commercial subway line, some important characteristics of wheel/rail contact mechanics were found by the analysis of measured data. Numerical simulations of curving with a full vehicle model using multi-body dynamics software were carried out, and according to the comparison with measured data, simulation results agree well with measured data in the steady-state values of derailment coefficients considering friction coefficient., TAYLOR & FRANCIS LTD
Vehicle System Dynamics, 2012, [Reviewed]

無信号交差点における歩行者事故防止のための危険予測運転ドライバモデルの構築
Raksincharoensak Pongsathorn; 長谷川大悟; 岩澤一成; 道辻洋平, Last, 自動車技術会
自動車技術会論文集, 2012, [Reviewed]

System Identification of Railway Trains Pantograph for Active Pantograph Simulation,
M.Abdullah; Y.Michitsuji; M.Nagai and G.Venture, Last, High performance of the contact wire and pantograph dynamic interaction is required in the operation of high speed railway vehicles. Due to the constraint of field test, simulation and lab experiment procedures are performable to verify the interaction. Such simulation needs accurate modeling of the response of the pantograph for the consistency in prediction and control. A simple system identification of the pantograph is executed based on the lab experimental data using commercial software and least squares method. The validation of the procedure is performed through comparison between extended experimental data and numerical simulations of the pantograph system. Further analysis is by applying active pantograph control on the system by simulation. The results show availability of the design for active pantograph system., The Japan Society of Mechanical Engineers
Journal of Mechanical Systems for Transportation and Logistics, 2011, [Reviewed]

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics
M.Abdullah; Y.Michitsuji; M.Nagai and N.Miyajima, In recent years, high speed railway vehicle technologies have been studied and investigated in order to develop their performances with the objectives of improving riding comfort, noise reduction and high efficiency from environmental perspective. One of the essential performances is current collection stability. Operating at high speed conditions, the current collection system which consists of contact wire and pantograph suffers from contact force variation. In order to reduce such variation, pantograph design should be comprised by active control thus realizing stability. Numerical analysis can be applied to model the current collection and in particular simulate the contact force variation itself. In this study, Finite Element Method and Absolute Nodal Coordinate Formulation are used to model the wire. A free vibration experiment that focuses on the tension of wire is performed to validate the numerical models. The validated result from the experiment demonstrates the accuracy of the numerical analysis in modeling the wire. The techniques are then applied to model the contact wire for the contact force investigation. The result indicated the availability of pantograph design via simulation to achieve steady contact force., The Japan Society of Mechanical Engineers
Journal of Mechanical Systems for Transportation and Logistic, 2010

Swing-up Control of Mass Body Interlinked Flexible Tether
M.Abdullah; Y.Michitsuji; M.Nagai; N.Miyajima and S.Takehara, Corresponding, One of the applications of tether system is in the field of satellite technology, where the mother ship and satellite equipment are connected with a cable. In order to grasp the motion of this kind of tether system in detail, the tether can be effectively modeled as flexible body and dealt by multibody dynamic analysis. In the analysis and modeling of flexible body of tether, large deformation and large displacement must be considered. Multibody dynamic analysis such as Absolute Nodal Coordinate Formulation with an introduction of the effect of damping force formulation can be used to describe the motion behavior of a flexible body. In this study, a parameter identification technique via an experimental approach is proposed in order to verify the modeling method. An example of swing-up control using the genetic algorithm control approach is performed through simulation and experiment. The validity of the model and availability of motion control based on multibody dynamics analysis are shown by comparison between numerical simulation and experiment. © 2010, Versita. All rights reserved.
The Archive of Mechanical Engineering, 2010, [Reviewed]

市街地走行データベースに基づく急ぎ運転状態検出アルゴリズム
Raksincharoensak Pongsathorn; 飯島 健; 道辻洋平; 永井正夫, Last, 自動車技術会
自動車技術会論文集, 2010, [Reviewed]

Vehicle Side Slip Angle Estimation Methodology Using a Drive Recorder,
T.IIJIMA; P.Raksincharoensak; Y.Michitsuji and M.Nagai, Last, In this paper we describe a side slip angle estimation methodology especially for a drive recorder which has limited vehicle sensing information. The drive recorder has attracted the attention of many researchers recently since its captured data contains valuable information that can enhance traffic safety. As the current algorithm of video capture and data acquisition, it detects hard braking by using acceleration sensor values and records the video image and vehicle data in that situation. However, the conventional trigger algorithm cannot be activated and the data cannot be recorded when the vehicle is in a side slip situation on a low friction road with low acceleration. We propose an estimation method of the vehicle side slip angle which uses lateral acceleration, yaw rate and velocity without requiring information about the steering wheel angle for the drive recorder configuration. In this paper we describe a synthesis of the estimation method based on a two-wheel lateral vehicle dynamics model and validation of the proposed methodology by experiments using an actual vehicle., SAGE PUBLICATIONS LTD
Journal of Vibration and Control, 2010, [Reviewed]

Integrated Simulation between Flexible Body of Catenary and Active Control Pantograph for Contact Force Variation Control
M.Abdullah; Y.Michitsuji; M.Nagai and N.Miyajima, Last, Railway transport has been developed for a variety of requirements with a diversity of studies and technologies in recent years. In particular, the intercity railway transport that can be operated at speed of more than 350 km/h is the goal for the railway industry. Due to vibration and drag forces at high speed, contact force variation occurs between pantograph and catenary. This variation also causes instability in the pantograph and catenary interaction. In this study, multibody dynamics analysis is used to model the catenary. The integration of the catenary model and the pantograph model in the simulation flow produces contact force variations. A sinusoidal feed forward force and a simple feedback control force are applied to control the wave-like contact force fluctuations by means of active dampers. Evaluation of the combination of active control forces will produce optimized forces that may be able to maintain, thus improve the contact force variations., The Japan Society of Mechanical Engineers
Journal of Mechanical Systems for Transportation and Logistics, 2010, [Reviewed]

逆踏面勾配車輪を有する独立回転輪軸の走行安定性に関する研究
小松祐太; 杉山博之; 道辻洋平; 須田義大, Corresponding, In this investigation, hunting stability of an independently rotating wheelset (IRW) with inverted tread conicity is discussed. To this end, equations of motion of IRW with inverted tread conicity are derived and used for the stability analysis. It is demonstrated that unstable hunting motion occurs in this type of wheelset and the hunting frequency decreases as the speed increases, which is totally different characteristics from those of the conventional wheelset. The cause of such unique vibration characteristics is investigated from an energy point of view, and the effect of coupling terms associated with the wheel/rail creep forces on the stability of the hunting motion is discussed using the equations of motion in a block diagram form. Furthermore, it is presented that the hunting motion can be stabilized by adequate choices of primary suspensions and the absolute stability condition is theoretically derived for a single suspended IRW with inverted tread conicity., The Japan Society of Mechanical Engineers
日本機械学会論文集（C編）, 2010, [Reviewed]

3909 Analysis on Driver's Dilemma during Yellow Phase Using Continuous Recording Type Drive Recorder
Igawa Hiroyuki; Michitsuji Yohei; Nagai Masao; Pongsathorn Raksincharoensak; Maeda Kouzou, In Japan, approximately 60% of traffic accidents occur in intersections. Thus, the necessity of countermeasures for safety in intersections becomes evident in reducing traffic accident. Especially, it is thought yellow light in signalized intersection is more dangerous because of dilemma. In order to figure out dilemma, two methods have been tried. One method is measured by using fixed point with camera which is put in intersection. The other is measured by using driving simulator. In our research approach, the study of driver behavior from vehicle on real traffic has been conducted by using continuous recording type drive recorders. As a result of analysis of four driver data, characteristic driving maneuver is observed., The Japan Society of Mechanical Engineers
The proceedings of the JSME annual meeting, 2008

Multi-body dynamics simulation and bogie structure evaluation for active-bogie steering truck
N. Miyajima; A. Matsumoto; Y. Suda; Y. Sato; H. Ohno; Y. Michitsuji; M. Komiyama; M. Tanimoto; Y. Kishimoto; Y. Sato; T. Nakai, Railway truck is necessary to have excellent curving performance as well as high speed hunting stability, but generally they are contrary to each other. In order to realize the compatibility, many trucks with passive steering mechanism have been studied, and some of them are realized on service operation. In order to realize further improvement of bogie steering ability on sharp curve, active steering control can give effective performance, and is considered as the latest topic. As an example of the active steering bogie, the bogie with actuators between wheelsets and bogie frame is considered. The bogie mechanism realizes effective steering but requires many actuators results in complex mechanism. The truck treated here has simple but effective mechanism: Actuators are attached only between car body and truck frame. When railway trucks negotiate sharp curve running, the rolling radius difference between inside and outside wheels cannot be obtained sufficiently, and the attitude of the truck becomes so-called "insufficient steering condition". Considering the phenomena, if the truck frame is steered by actuators toward "radial steering position of the truck", the improvement of curving performance of the truck can be realized. This is the first concept of active-bogie-steering (ABS) truck. In this paper, detailed study and evaluation for ABS (Active-Bogie-Steering) bogie will be presented. Validity tests were carried out with the bogie on rolling test stand in NTSEL (National Traffic Safety and Environment Laboratory), which can simulate curve-running condition including transition curve. Bogie parameters and steering actuator characteristics are elaborately identified in order to compare the experimental results with multi-body dynamics simulation. According to the test results and numerical simulation, the effectiveness of the proposed bogie mechanism and control are proved., AMER SOC MECHANICAL ENGINEERS
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION 2007, VOL 16, 2008, [Reviewed]

ドライブレコーダを活用した交差点黄信号におけるドライバ挙動の分析
道辻洋平; 目崎大輔; 永井正夫; 小竹元基; 鎌田 実; 茂呂克己
自動車技術会論文集, 2008

Running performance of steering,truck with independently rotating,wheel considering traction and,braking
W.Wang; Y.Suda and Y.Michitsuji, In the EEF (single-wheel single running gear) method, the asymmetric geometry lateral force obtained by the nonlinear wheel profile makes it self-aligned to the Independent Rotation Wheelset (IRW), and lateral displacement between the wheel's yaw centre and the wheel-rail contact point obtains self-steering force. But the longitudinal creep force disables these functions when traction torque is applied to the EEF wheel unit directly. In this paper, we propose a new, bogie type to obtain traction Force of the IRW without losing the self-alignment and the self-steering capability. Traction torque was applied to a normal IRW pair, and the front and rear joint connected steering wheels guided the traction IRW pair along the track. The running performance of the proposed steering truck was studied by numerical simulation and a scaled model experiment., TAYLOR & FRANCIS LTD
VEHICLE SYSTEM DYNAMICS, 2008

Curving performance evaluation for,active-bogie-steering bogie with,multibody dynamics simulation and,experiment on test stand
A.Matsumoto; Y.Sato; H.Ohno; T.Mizuma; Y.Suda; Y.Michitsuji; M.Tanimoto; E.Miyauchi and Y.Sato, The authors propose a new concept of the active steering bogie. which has simple mechanism and high curving performance. Active-bogie-steering bogie has the steering mechanism only between car-body and bogie frame and no mechanism in wheelsets. On curved track, the bogie frames are steered toward,; radial steering direction by actuators according to active control law. In this paper, we show that the lateral contact force of the leading-outside wheel call be reduced to zero even on very sharp curve by this mechanism. Validity tests were carried out by Using a full-size test bogie on the Tolling test stand, which can simulate curve-running condition. Bogie parameters and steering actuator characteristic; are identified in order to compare the experimental results with multibody dynamics simulation. After these stand tests and simulation, We successfully verified the effectiveness of the proposed bogie mechanism and control., TAYLOR & FRANCIS LTD
Vehicle System Dynamics Supplement, 2008, [Reviewed]

Wheel/rail friction control with feedback system detecting yaw,moment of wheelset
K.Matsumoto; M.Tomeoka; A.Iwamoto; Y.Suda; H.Komine; Y.Michitsuji; T.Nakai; Y.Sato and; M; Tanimoto, Last, In the subway lines of Tokyo Metro, there are many tight curves that may cause squeal noise. excessive rail/wheel wear and also rail corrugation. To solve these serious problems, an onboard friction control system has been developed by the authors and has been equipped on some commercial trains. [Y. Suda. H. Komine, T. Iwasa, M. Tomeoka, K. Matsumoto, N. Ubukata, M. Tanimoto, M. Nakata, and T. Nakai, Improvement of curving performance with friction control between wheel and rail. The 17th IAVSD Symposium Poster Session, Lyngby, Denmark, August, 2001; Y. Suda, H. Komine, T. Iwasa, T. Fujii, Tomeoka, K. Matsumoto. N. Ubukata, M. Tanimoto. M. Nakata, and T. Nakai, Experiment and analysis for improvement of curving performance with friction control between wheel and rail, Veh. Syst. Dynam. 41(Suppl.) (2004), pp. 507-516.]. With the system, in order to obtain the enough effect of friction control steadily, it is natural that an appropriate quantity of friction modifier should be required [K. Matsumoto, Y. Suda, T. Fujii, H. Komine, M. Tomeoka, Y. Sato, T. Nakai. M. Tanimoto, and Y. Kishimoto, The optimum design of an onboard friction control system between wheel and rail in a negotiation, Veh. Syst. Dynam. 44(Suppl.) (2006),pp. 531-540]. On such a viewpoint, the authors propose I new friction control system with the detection of yaw moment acting on the running wheelset. In this paper, first. Outline of conventional feed-forward control system is introduced: secondly. the concept of feedback friction control system is presented considering the results of the multi-body dynamics simulations, and finally some field running test results of the developed system are discussed., TAYLOR & FRANCIS LTD
Vehicle System Dynamics Supplement, 2008, [Reviewed]

Analysis on Drivers’ Decisions to,Stop during Yellow Signals Using,Drive Recorder　　　　　　　　　　　　　　　
Y.Michitsuji; D.Mezaki; M.Nagai; M.Kamata; M.Shino and K.Moro, Lead
JSAE Review, 2008, [Reviewed]

Swing-up control of mass body interlinked tether
Naoki Miyajima; Yohei Michitsuji; Shoichiro Takehara, The tethered system, which composed with a mother ship and satellite connected with tether, is an example of recent satellites. In the analysis and modeling of tether, large deformation and large displacements must be considered. The Absolute Nodal Coordinate Formulation can describe the motion of tether. In the modeling method, internal damping and fluid resistance are not considered, and the identification for such parameters is still problem to be solved. In this study, the effect of damping and fluid resistance based on strain energy and drag equation are formulated while considering a parameter identification method. These parameter and number of elements are identified by the experiment at the same time. In order to verify the modeling method, an example of swing-up control using a genetic algorithm is performed in simulation and experiment. Validity of model and availability of motion control based on multibody dynamics are shown comparison between experiment and simulation.
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Nov. 2007

0219 A Study on Wheel Tread Profile for Active-Bogie-Steering Truck
MIYAJIMA Naoki; KOMIYAMA Makoto; MICHITSUJI Yohei; SUDA Yoshihiro; MATSUMOTO Akira; SATO Yasuhiro; OHNO Hiroyuki; TANIMOTO Masuhisa; KISHIMOTO Yasusi; SATO Yoshi; NAKAI Takuji, Railway truck is necessary to have excellent curving performance as well as high speed hunting stability, but generally they are contrary to each other. "Active-bogie-steering (ABS) Bogie", is one of the methods to realize the compatibility between curving performance and hunting stability. ABS bogie has active steering mechanism only between car body and bogie frame, and bogie frame is steered by actuators toward "radial steering position", which realizes no "bogie angle shortage". In this paper, more detailed study and evaluation for ABS bogie will be presented. Bogie control strategies which minimize a certain cost function including contact lateral forces for leading-outside wheels of each bogie is proposed. According to the numerical simulation with multibody dynamics software, the effects of wheel tread profiles are proved. Moreover, calculations of hunting stability for ABS truck with three tread profiles., The Japan Society of Mechanical Engineers
The proceedings of the JSME annual meeting, 2007

ドライブレコーダを用いたヒヤリハット分析に関する研究（第1報）－ドライブレコーダの仕様策定とトリガ設定検討
NAGAI Masao; MICHITSUJI Yohei; KAMATA Minoru; SHINO Motoki, Corresponding, 自動車技術会
自動車技術会論文集, 2007, [Reviewed]

ドライブレコーダを用いたヒヤリハット分析に関する研究（第2報）－収集データによる分析手法とデータベース構築－
藤田光伸; 小竹元基; 鎌田 実; 道辻洋平; 永井正夫, Last
自動車技術会論文集, 2007, [Reviewed]

ドライブレコーダを用いたヒヤリハット分析に関する研究（第3報）－データベースを用いた追突ヒヤリハット解析－
藤田光伸; 小竹元基; 鎌田 実; 道辻洋平; 永井正夫, Last
自動車技術会論文集, 2007, [Reviewed]

テザーに連結された質量物体の振り上げ制御　　　　　　　　　　　　　　　
宮島直希; 道辻洋平; 竹原昭一郎
日本機械学会論文集(C), 2007

3705 Method of Steering Moment Distribution for Full-vehicle Model with Active-Bogie-Steering Bogie
Komiyama Makoto; Michitsuji Yohei; SUDA Yoshihiro; MATSUMOTO Akira; SATO Yasuhiro; OHNO Hiroyuki; TANIMOTO Masuhisa; KISHIMOTO Yasusi; SATO Yoshi; NAKAI Takuji, Railway truck is necessary to have excellent curving performance as well as high speed hunting stability, but generally they are contrary to each other. "Active-bogie-steering (ABS) Bogie", is one of the methods to realize the compatibility between curving performance and hunting stability. ABS bogie has active steering mechanism only between car body and bogie frame, and bogie frame is steered by actuators toward "radial steering position", which realizes no "bogie angle shortage". In this paper, more detailed study and evaluation for ABS bogie will be presented. Bogie control strategies which minimize a certain cost function including contact lateral forces for leading-outside wheels of each bogie is proposed. According to the numerical simulation with multi-body dynamics software, the effectiveness of the proposed bogie mechanism and control are proved., The Japan Society of Mechanical Engineers
The proceedings of the JSME annual meeting, 2006

Running performance of,power-steering railway bogie with independently rotating wheels.
Y.Michitsuji and Y.Suda, Lead, This article proposes the concept of a steering bogie which utilizes self-steering ability while realizing further running performance with slight active control on a tight curve. An independently rotating wheel with EEF bogie naturally has self-steering ability, making use of gravity stiffness aroused by nonlinear tread gradient. but has oscillation in the wheel-steering motion. The proposed power-steering-railway bogie consists of independently rotating wheels with a power-steering device and enables us to eliminate steering vibration while realizing ideal steering with slight power assist on curving. In this article. the theoretical investigation of the power-steering bogie and the control strategies is mentioned. Experimental results and numerical simulations with a scaled model vehicle show the effectiveness of the proposed bogie design and the proposed power-steering control., TAYLOR & FRANCIS INC
Vehicle System Dynamics Supplement, 2006, [Reviewed]

緩和曲線区間の操舵アシスト制御による鉄道車両一軸パワーステアリング台車の曲線通過性能向上
道辻洋平; 須田義大, Lead, In the design of rail vehicle, the compatibility between high speed running stability and good curving performance is quite important. Various railway vehicles with steering mechanism have been considered. Even though some steering bogies are realized on service operation, there still remains some improvement in the passive vehicle design for more tight curved track. The proposed bogie with power-steering yaw damper enables the vehicle to realize ideal curving performance on tight curved track with active control while achieving high speed running stability with passive nature of the suspension. In this paper, the theory of power-steering bogie is explained. In order to verify the performance of the newly developed steering bogie, the scaled model experimental platform with 1/10 model vehicle is originally made and experimental results show the running performance., The Japan Society of Mechanical Engineers
日本機械学会論文集 （C編）, 2005, [Reviewed]

スケールモデル実験装置を用いた独立回転車輪パワーステアリング台車の走行性能
スケールモデル実験装置を用いた独立回転車輪パワーステアリング台車の走行性能, Lead, This paper proposes the new steering bogie for very tight curved track. The bogie consists of independently rotating wheel controlled by power steering yaw-dampers. Independently rotating wheel with EEF bogie naturally has self steering ability making use of gravity restoring force aroused by nonlinear tread gradient, but has vibration nature in yaw mode of wheel. The proposed power steering yaw-damper enable the wheel vibration to decrease while controlling the steering motion on transition curve. The authors combined the self steering ability of the bogie and power steering yaw-damper to get the compatibility between excellent steering behavior and enough high speed running stability. Experimental results with scaled model vehicle show the effectiveness of active control and bogie mechanism., The Japan Society of Mechanical Engineers
日本機械学会論文集 （C編）, 2005, [Reviewed]

等価支持剛性を考慮した鉄道車両用一軸台車の自己操舵性能向上
道辻洋平; 須田義大; 青木慎一; 八百滋貴; 岩佐崇史; 小峰久直, Lead
日本機械学会論文集 （C編）, 2004, [Reviewed]

鉄道車両一軸操舵台車の蛇行動周波数に基づく走行安定性設計
道辻洋平; 須田義大; 岩佐崇史, Lead, Compatibility between high speed running stability and good curving performance of railway vehicles has long been considered. In the design of vehicle parameters, the axle supporting stiffness is quite important for solving the trade〜off. On the contrary, the proposed bogie with steering yaw damper enables the vehicle to realize ideal curving performance on tight curved track while achieving high speed running stability. In order to verify the performance of the newly developed steering truck, the scaled model experimental platform with 1/10 model vehicle is orignnally made. In this paper, the theory of steering bogie to secure high speed running stability is explained. The design procedure is based on the hunting frequency analysis of wheelset considered as a system to be stabilized. Experimental results for the scale model vehicle with two single〜axle bogies show good performance for high speed running stability., The Japan Society of Mechanical Engineers
日本機械学会論文集 （C編）, 2004, [Reviewed]

Research on high curving,performance trucks –concept and basic characteristics of,active-bogie-steering-truck–
A.Matsumoto; Y.Sato; H.Ohno; T.Mizuma; Y.Suda; Y.Michitsuji; M.Tanimoto; E.Miyauchi and Y.Sato, Corresponding, "Active-bogie-steering (ABS) truck", is one of the methods to realize the compatibility between curving performance and hunting stability. ABS truck has active steering mechanism only between car body and truck frame, and truck flame is steered by actuators toward "radial steering position", which realizes no "bogie angle shortage". Validity tests were carried out on the truck rolling test stand in NTSEL, which can simulate curve-running condition, and we have also carried out numerical simulation using multi-body dynamics simulation program A'GEM. The results of stand tests and numerical simulations show 1) "lateral contact force of outside wheel of leading axle" in curving is produced by "bogie angle shortage" and 2) "bogie angle shortage" is reduced proportionally by bogie-steering actuator force. So active-bogie-steering can reduce the lateral contact force of the outside wheel of leading axle in curving, and it is possible to reduce lateral contact force in sharp less than zero., TAYLOR & FRANCIS LTD
Vehicle System Dynamics Supplement, 2004, [Reviewed]

鉄道車両の走行安定性判別のための一手法と操舵性台車設計への応用　　　　　　　　　　　　　　　
谷藤克也; 道辻洋平, Last
日本機械学会論文集 （C編）, 2000, [Reviewed]

空転再粘着制御時の台車挙動解析
山口 泰平; 道辻 洋平; 牧島 信吾; 髙橋 諭
東洋電機技報, Oct. 2021

講演 営業車両を用いた軌道状態常時モニタリング技術の開発とその活用
大野 寛之; 緒方 正剛; 森 裕貴; 佐藤 安弘; 松本 陽; 道辻 洋平; 谷本 益久; 品川 大輔; 長澤 研介
交通安全環境研究所フォーラム講演概要, 2016

3105 4^ report; Report of the commercial train running data measured by new on-board measuring method of derailment coefficients
Iwamoto Atsushi; Fukushima Tomoki; Yano Kenta; Shinagawa Daisuke; Ichiyanagi Yousuke; Michitsuji Youhei; Matsumoto Akira; Sato Yasuhiro; Ohno Hiroyuki; Tanimoto Masuhisa; Nagasawa Kensuke
Jointed railway technology symposium, 08 Dec. 2015

ドライブレコーダを活用した交差点黄信号における急停止判断要因の分析　　　　　　　　　　　　　　　
道辻洋平; 永井正夫
国際交通安全学会誌, 2008

ドライブレコーダの情報を分析し交通事故を削減する　　　　　　　　　　　　　　　
永井正夫; 道辻洋平
カー・エレクトロニクスのすべて2008, 2008

11802 Analysis of running performance considering actuator characteristics for Active-Bogie-Steering Bogie
Miyajima Naoki; Komiyama Makoto; Michitsuji Yohei; SUDA Yoshihiro; MATSUMOTO Akira; SATO Yasuhiro; OHNO Hiroyuki; TANIMOTO Masuhisa; KISHIMOTO Yasusi; SATO Yoshi; NAKAI Takuji
日本機械学会関東支部総会講演会講演論文集, 15 Mar. 2007

Analysis of collision incident using drive recorder
Yohei Morinaka; Yohei Michitsuji; Pongsathorn Raksincharoensak; Masao Nagi
SAE Technical Papers, 2007

Analysis of driver behavior during yellow traffic signals using drive recorder
Daisuke Mezaki; Yohei Michitsuji; Pongsathorn Raksincharoensak; Masao Nagi
SAE Technical Papers, 2007

Research on Near-miss Incident Analysis Using Drive Recorders(3rd Report: Analysis using database）　　　　　　　　　　　　　　　
藤田光伸; 小竹元基; 鎌田実; 道辻洋平; 永井正夫
2007

Control Strategy for Hybrid Electric Vehicles Based on Driver Vehicle Following Model　　　　　　　　　　　　　　　
Dam Hoang Phuc; M.Suzuki; P.Raksincharoensak; Y.Michitsuji; M.Nagai
Proceedings of SICE-ICCAS 2006, Busan, Korea, 2006

Analysis of Activation Situation of Active Safety Device Using Drive Recorder Equipped Vehicles　　　　　　　　　　　　　　　
Y.Michitsuji; M.Nagai; P.Raksincharoensak; T.Iijima; S.Shigeeda; A.Inthuthipawan; M.Fujita; M.Shino; M.Kamata; K.Maeda
Proceedings of the 13th World Congress on ITS, London, 2006

Vehicle Side Slip Estimation Methodology Using Drive Recorder　　　　　　　　　　　　　　　
T.Iijima; P.Raksincharoensak; Y.Michitsuji; M.Nagai
Proceedings of MOVIC 2006, Daejeon, Korea, 2006

Development of Drive Recorder Detecting Activation of Active Safety Devices　　　　　　　　　　　　　　　
Yohei Michitsuji; M.Nagai; P.Raksincharoensak; S.Shigeeda; T.Iijima; M.Fujita; M.Shino; M.Kamata; K.Maeda
Proceedings of AVEC'06, Taipei, 2006

鉄道車両二輪一ユニット操舵台車のダイナミクスと制御　　　　　　　　　　　　　　　
道辻洋平; 須田義大
計測と制御, 2006, [Reviewed]
Lead

ドライブレコーダ活用によるヒヤリハット　　　　　　　　　　　　　　　
永井正夫; 鎌田 実; 道辻洋平; 藤田光伸; 小竹元基
自動車技術, 2006
Last

鉄道車両のダイナミクスとモデリング　　　　　　　　　　　　　　　
Contributor
丸善出版, 01 Dec. 2017

〔Major achievements〕Evaluation of wheel flange lubrication condition based on continuous observation of wheel/rail contact forces　　　　　　　　　　　　　　　
Yosuke Ichiyanagi; Yasuhiro Sato; Yohei Michitsuji; Akira Matsumoto; Masuhisa Tanimoto; Yuichi Nakasato; Junya Ito; Takuya Matsuda; Daisuke Shinagawa
IAVSD2023, Aug. 2023

〔Major achievements〕Analysis on Wheel Load Imbalance under Traction in Parallel Cardan Driving Bogies　　　　　　　　　　　　　　　
Taihei Yamaguchi; Yohei Michitsuji; Shingo Makishima; Satoru Takahashi
IAVSD2023, Aug. 2023

〔Major achievements〕Study on the Mechanism of Wheelset Rotational Velocity Variation in Curved Track　　　　　　　　　　　　　　　
Yuzuki Endo; Yohei Michitsuji; Masuhisa Tanimoto; Osamu Imahori; Kosuke Shimura
IAVSD2023, Aug. 2023

〔Major achievements〕Analysis on the Diagonal Wheel Load Variation in a Bogie Measured by Trackside Device　　　　　　　　　　　　　　　
Takuya Matsuda; Kosuke Matsumoto; Takamitsu Aiba; Masahiro Kaneko; Yohei Michitsuji; Yuzuki Endo; Masuhisa Tanimoto
IAVSD2023, Aug. 2023

〔Major achievements〕State-of-the-Art Presentation: Improved Curving Performance Using Unconventional Wheelset Guidance Design and Wheel-Rail Interface - Present and Future Solutions　　　　　　　　　　　　　　　
Yoshihiro Suda; Yohei Michitsuji
IAVSD2023, Aug. 2023, [Invited]

ＰＧ速度センサを用いた行路長測定技術の確立　　　　　　　　　　　　　　　
今堀 修,谷本益久,道辻洋平,遠藤柚季
第29回鉄道技術連合シンポジウム（J-RAIL2022）, 09 Dec. 2022

台上試験における曲線走行時の車輪・レール接触力と前軸外軌側の摩耗発生量との関係　　　　　　　　　　　　　　　
一柳洋輔,佐藤安弘,緒方正剛,大野寛之,道辻洋平,松本 陽,谷本益久,松田卓也,伊藤淳矢,品川大輔
第29回鉄道技術連合シンポジウム（J-RAIL2022）, 09 Dec. 2022

車載単眼カメラを活用した鉄道車両のアクティブ操舵制御　　　　　　　　　　　　　　　
柴田 拓実,道辻 洋平,須田 義大
第31回交通・物流部門大会（TRANSLOG2022）, 30 Nov. 2022, 日本機械学会

曲線通過時における輪軸回転数変動メカニズムの考察　　　　　　　　　　　　　　　
遠藤 柚季,道辻 洋平,谷本 益久,今堀 修,志村 昂亮
第31回交通・物流部門大会（TRANSLOG2022）, 30 Nov. 2022, 日本機械学会

車両運動シミュレーションに基づくレール塗油装置の設置位置の検討　　　　　　　　　　　　　　　
石井 隆太、道辻 洋平、谷本 益久、伊藤 淳矢、徳永 浩二、辰巳 美里、有馬 潤太
第31回交通・物流部門大会（TRANSLOG2022）, 30 Nov. 2022, 日本機械学会

前方注視カメラを活用した軌道の曲率推定　　　　　　　　　　　　　　　
柴田 拓実,道辻 洋平
日本機械学会年次大会2022, 05 Sep. 2022

Detection of high friction coefficient among sharp curves using monitoring bogie in service operation　　　　　　　　　　　　　　　
Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Yasuhiro Sato; Hiroyuki Ohno; Seigo Ogata; Masuhisa Tanimoto; Tomoki Fukushima; Takuya Matsuda; Daisuke Shinagawa
The Fifth International Conference on Railway Technology(Railways 2022), 23 Aug. 2022

Estimation method of friction coefficient between flange and rail with monitoring bogie -Experimental results with roller-rig test-　　　　　　　　　　　　　　　
Yohei Michitsuji; Akira Matsumoto; Yosuke Ichiyanagi; Yasuhiro Sato; Hiroyuki Ohno; Seigo Ogata; Masuhisa Tanimoto; Tomoki Fukushima; Takuya Matsuda; Daisuke Shinagawa
The Fifth International Conference on Railway Technology(Railways 2022), 23 Aug. 2022

鉄道車両に設置したステレオカメラによる障害物検知　　　　　　　　　　　　　　　
柴田 拓実,道辻 洋平
日本機械学会茨城講演会2022, 19 Aug. 2022

GPSと慣性計測装置を併用した鉄道車両の速度推定　　　　　　　　　　　　　　　
齋藤宏史; 道辻洋平; 長澤研介,岡野真行
日本機械学会茨城講演会2022, 19 Aug. 2022

軌道設置センサを活用した通過車両の動揺検出法の基礎的検討　　　　　　　　　　　　　　　
佐藤美希; 道辻洋平; 長澤研介; 久田育德
日本機械学会茨城講演会2022, 19 Aug. 2022

車両運動解析に基づく二段勾配クロッシングの輪重変動・摩耗抑制効果の検討　　　　　　　　　　　　　　　
桑名和希; 道辻洋平; 渡邉真一; 髙橋浩市朗
第30回交通・物流部門大会, Dec. 2021, 日本機械学会

ステレオカメラによる鉄道車両前方の障害物検知　　　　　　　　　　　　　　　
柴田拓実、道辻洋平
第30回交通・物流部門大会, Dec. 2021, 日本機械学会

空気ばね系が曲線通過における鉄道車両姿勢に及ぼす影響の分析　　　　　　　　　　　　　　　
中嶋良樹、道辻洋平、喜多成充、國松祐樹
第30回交通・物流部門大会, Dec. 2021, 日本機械学会

曲線通過中の通り変位が車体振動に及ぼす影響の分析～スケールモデル軌条輪装置を用いた検証～　　　　　　　　　　　　　　　
忍足大輔,道辻洋平,干鯛正隆
第30回交通・物流部門大会, Dec. 2021, 日本機械学会

New evaluation method for steering performance on sharp curve by monitoring device installed on rail　　　　　　　　　　　　　　　
Soma Onishi; Masuhisa Tanimoto; Takuya Matsuda; Tomoki Fukushima; Tomohisa Ogino; Akira Matsumoto; Yohei Michitsuji; Yasuhiro Sato; Hiroyuki Ohno; Seigo Ogata; Yosuke Ichiyanagi; Takanori Matsumi
STECH2021, Nov. 2021

Simulation-based estimation method of lubrication condition of wheel flange and investigation based on roller rig test　　　　　　　　　　　　　　　
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Seigo Ogata; Masuhisa Tanimoto; Tomoki Fukushima; Takuya Matsuda; Takanori Matsumi
STECH2021, Nov. 2021

Development of the anomalous bogie detection method by the monitoring of the air spring pressure　　　　　　　　　　　　　　　
Shigemitsu Kita; Yuki Kunimatsu; Issei Kokubun; Yohei Michitsuji
STECH2021, Nov. 2021

Mechanism and Characteristics of slip misdetection in re-adhesion control on railway vehicle　　　　　　　　　　　　　　　
Taihei Yamaguchi; Yohei Michitsuji; Shingo Makishima; Satoru Takahashi
STECH2021, Nov. 2021

単眼車載カメラを用いた鉄道車両のアクティブ操舵台車（スケールモデル走行装置を用いた検証実験）　　　　　　　　　　　　　　　
天野倉一誠、道辻洋平
第58回鉄道サイバネシンポジウム, Nov. 2021, [Invited]

単眼カメラを活用した鉄道の標識検知　　　　　　　　　　　　　　　
柴田拓実; 道辻洋平
茨城講演会, Aug. 2021

損傷抑制を目的とした固定クロッシング乗移り部の形状開発　　　　　　　　　　　　　　　
髙橋浩市朗、渡邉真一、米原善秀、道辻洋平、桑名和希、瀧川光伸、久保奈帆美、牧野哲也
鉄道工学シンポジウム, Apr. 2021

損傷抑制を目的とした固定クロッシング,乗移り部の形状開発　　　　　　　　　　　　　　　
髙橋浩市朗、渡邉真一、米原善秀、道辻洋平、桑名和希、瀧川光伸、久保奈帆美、牧野哲也
鉄道工学シンポジウム, Apr. 2021

前方注視カメラを活用した鉄道車両の制動制御　　　　　　　　　　　　　　　
柴田拓実; 道辻洋平
日本設計工学会春季大会2021, Mar. 2021

Estimating method of wheel-rail friction condition by using PQ monitoring bogie　　　　　　　　　　　　　　　
Itsuro Arai; Masuhisa Tanimoto; Shinichi Watanabe; Takuya Matsuda; Akira Matsumoto; Yohei Michitsuji
The 11th International Conference on Railway Bogies and Running Gears, Sep. 2019

New safety index against flange-climb derailments in curving　　　　　　　　　　　　　　　
Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Masuhisa Tanimoto; Takuji Nakai; Yasuhiro Sato
The 11th International Conference on Railway Bogies and Running Gears, Sep. 2019

Estimation of friction coefficient between outside wheel flange and rail considering influence of wheel/rail wear　　　　　　　　　　　　　　　
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Daisuke Yamaguchi; Masuhisa Tanimoto; Takuya Matsuda; Takanori Matsumi
IAVSD2019, Aug. 2019

Curving performance evaluation of EEF bogie with inclined wheel axles using scale model vehicle　　　　　　　　　　　　　　　
Yohei Michitsuji; Kohei Mizuno; Yoshihiro Suda; Shihpin Lin; Shingo Makishima
IAVSD2019, Aug. 2019

Prediction of wheel flange wear by observing the change of curving performance with flange lubrications　　　　　　　　　　　　　　　
Takuya Matsuda; Masuhisa Tanimoto; Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Yasuhiro Sato; Hiroyuki Ohno; Daisuke Yamaguchi; Takamori Matsumi
IAVSD2019, Aug. 2019

New profile of crossing optimized for different type of wheel tread shapes　　　　　　　　　　　　　　　
Yoshihide Yonehara; Itsuro Arai; Saki Matsuo; Takaaki Fujioka; Yohei Michitsuji; Toshiaki Koyama
Railway Engineering 2019, Jun. 2019

Curving safety against flange climb derailments and wheel/rail contact problems -Japanese experiences and safety measures-　　　　　　　　　　　　　　　
Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Yohei Michitsuji; Yosuke Ichiyanagi; Masuhisa Tanimoto; Atsushi Iwamoto and Takuji Nakai
CM2018, Sep. 2018

Estimation of friction coefficient between outside flange and rail surface　　　　　　　　　　　　　　　
Takuya Matsuda; Fujio Masuzawa; Takashi Maeda; Atsushi Iwamoto; Kosuke Matsumoto; Masuhisa Tanimoto; Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi; Yasuhiro Sato; Hiroyuki Ohno; Takuji Nakai
CM2018, Sep. 2018

Condition monitoring system based on wheel-rail contact forces　　　　　　　　　　　　　　　
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Masuhisa Tanimoto; Atsushi Iwamoto Tomoki Fukushima and Takuji Nakai
CM2018, Sep. 2018

Estimation method of friction coefficient between outside wheel flange and rail based on vehicle dynamics simulation　　　　　　　　　　　　　　　
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Masuhisa Tanimoto; Takashi Maeda; Takuya Matsuda and Takuji Nakai
Railways2018, Aug. 2018

Running performance of EEF bogie with inclined wheel axle　　　　　　　　　　　　　　　
Kohei Mizuno; Yohei Michitsuji; Yoshihiro Suda; Shihpin Lin and Shingo Makishima
Railways2018, Aug. 2018

Curving safety against flange climb derailments and wheel/rail contact problems -Japanese experiences and safety measures-　　　　　　　　　　　　　　　
Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Yohei Michitsuji; Yosuke Ichiyanagi; Masuhisa Tanimoto; Atsushi Iwamoto and Takuji Nakai
Railways2018, Aug. 2018

Development of the condition monitoring tool based on wheel-rail contact forces collected by the PQ monitoring bogie　　　　　　　　　　　　　　　
Yosuke Ichiyanagi; Yohei Michitsuji; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Masuhisa Tanimoto; Atsushi Iwamoto; Tomoki Fukushima; Daisuke Shinagawa; and Kensuke Nagasawa
IAVSD2017, Aug. 2017

Running Performance Improvement for the EEF bogie with Inclined Wheel Axles　　　　　　　　　　　　　　　
Yohei Michitsuji; Ryosuke Shiga; Yoshihiro Suda; Shihpin Lin and Shingo Makishima
IAVSD2017, Aug. 2017

Derailments of freight wagons caused by rolling and related considerations　　　　　　　　　　　　　　　
Akira Matsumoto; Yohei Michitsuji; Yosuke Ichiyanagi and Kohei Mizuno
IAVSD2017, Aug. 2017

Modeling and Running Performance Analysis of EEF Bogie with Inclined Wheel-Axles　　　　　　　　　　　　　　　
Ryosuke Shiga; Yohei Michitsuji; Yoshihiro Suda; Kenji Ejiri and Shihpin Lin
Proc. on the ACMD2016, Aug. 2016

Analysis of the Running Ability of Independently Rotating Wheels　　　　　　　　　　　　　　　
K. Ejiri; Y. Michitsuji; Y. Suda and S. Lin
Proc. on Railways2016, Apr. 2016

Development of vehicle position detection system with on-board accelerometer　　　　　　　　　　　　　　　
Hajime IIDAKA; Yohei MICHITSUJI; Masuhisa TANIMOTO Michitaka HASHIMOTO and Kensuke NAGASAWA
Proc. on STECH2015, Nov. 2015

Derailment Coefficient Data for Commercial Lines Measured by PQ Monitoring Bogies and Methods of Application　　　　　　　　　　　　　　　
Tomoki Fukushima; Kenta Yano; Atsushi Iwamoto; Kosuke Matsumoto; Akira Matsumoto; Masuhisa Tanimoto; Yohei Michitsuji; Yasuhiro Sato; Masaaki Mizuno; Daisuke Shinagawa
Proc. on STECH2015, Nov. 2015

The Influence of Lubrication Conditions of Four Wheels in a Bogie on Curving Performance　　　　　　　　　　　　　　　
Kensuke Nagasawa; Masuhisa Tanimoto; Akira Matsumoto; Yohei Michitsuji; Yasuhiro Sato; Hiroyuki Ohno; Hirotaka Mori; Atsuhshi Iwamoto; Kenta Yano; Masaaki Mizuno
Proc. on STECH2015, Nov. 2015

Proposition of Oblique Axle Independently Rotating Wheelset for Improvement in Running Stability　　　　　　　　　　　　　　　
Kenji Ejiri; Yohei Michitsuji; Yoshihiro Suda and Shihpin Lin
Proc. on STECH2015, Nov. 2015

Running Stability analysis of Independently Rotating Wheelset with Negative Tread Conicity Using Scaled-Model Roller Rig　　　　　　　　　　　　　　　
Kenji Ejiri; Yohei Michitsuji; Yoshihiro Suda; Shihpin Lin; Hiroyuki Sugiyama
Proc. of the IAVSD2013, Aug. 2013

Enhancement of Driver Risk Perception Ability Using Virtual Coaching System for Elderly Drivers　　　　　　　　　　　　　　　
M. Shino; M.Kamata; Y. Michitsuji
2nd International Symposium on Future Active Safety Technology toward zero-traffic-accident, 2013

Cause Analysis of Derailment Coefficient based on Collected Data with New-type Monitoring Bogie　　　　　　　　　　　　　　　
Yohei Michitsuji; Ryo Matsui; Kimihiro Miura; Akira Matsumoto; Yasuhiro Sato; Hiroyuki Ohno; Hirotaka Mori; Makoto Shimizu; Jun Kurihara; Masaaki Mizuno; Masuhisa Tanimoto and Kensuke Nagasawa
Proc. of the IAVSD2013, 2013

Parameter Identification of Steering Actuator and Simulation for a Vehicle of Active Bogie Steering　　　　　　　　　　　　　　　
D.Sugawara; Y.Michitsuji; Y.Suda; Y.Sato; H.Ohno; H.Mori; M.Tanimoto and M.Mizuno
Proc. on the ACMD2012, 2012

Comparison between Running Experiment and Simulation for Wheelset with Inverse Tread Conicity　　　　　　　　　　　　　　　
K.Ejiri; Y.Michitsuji; Y.Suda; H.Sugiyama; Y.Komatsu and S.Lin
Proc. On the ACMD2012, 2012

Analysis on Wheel/Rail Friction Characteristics for In-service Train with Multibody Dynamics Simulation　　　　　　　　　　　　　　　
R.Matsui; Y.Michitsuji; A.Matsumoto; Y.Sato; H.Ohno; M.Shimizu; J.Kurihara; T.Saito; M.Tanimoto and M.Mizuno
Proc. on the ACMD2012, 2012

Running Stability Experiment with Scaled-model Roller Rig for the New-type Independently Rotating Wheelset　　　　　　　　　　　　　　　
K.Ejiri; Y.Michitsuji; Y.Suda; H.Sugiyama; S.Lin and Y.Komatsu
Proc. on the STECH’12, 2012

New Monitoring System for Measuring Derailment Coefficient Data on Some Commercial Lines　　　　　　　　　　　　　　　
T.Saito; H.Obayashi; J.Kurihara; M.Shimizu; K.Shikata; M.Mizuno; M.Tanimoto; Y.Michitsuji; H.Ohno; Y.Sato and A.Matsumoto
Proc. on the STECH’12, 2012

Driver Education System using Pseudo Driving Picture for Improvement on Elderly Drivers’ Risk Perception Ability　　　　　　　　　　　　　　　
Motoki Shino; Wataru Igarashi and Yohei Michitsuji
25th International Co-operation on Theories and Concepts in Traffic Safety, 2012

Self-steering Ability of the Proposed New Concept of Independently Rotating Wheelset Using Inverse Tread Conicity　　　　　　　　　　　　　　　
Y.Suda; W.Wang; M.Nishina; S.Lin and Y.Michitsuji
Proc. of the 21th IAVSD Symposium, Aug. 2011

Stability of a New-type Independently Rotating Wheelset　　　　　　　　　　　　　　　
H.Sugiyama; Y.Komatsu; Y.Michitsuji and Y.Suda
Proc. of the 21th IAVSD Symposium, 2011

Continuous Observation of Wheel/Rail Contact Forces in Curved Track and Theoretical Consideration　　　　　　　　　　　　　　　
A.Matsumoto; Y.Sato; H.Ohno; M.Shimizu; M.Tomeoka; T.Saitou; Y.Michitsuji; M.Tanimoto and Y.Sato
Proc. of the 21th IAVSD Symposium, 2011

Data-Driven Hurry driving Detection Algorithm Design and Evaluation by Using Continuous-logging Drive Recorder　　　　　　　　　　　　　　　
G.Nishie; T.Ikenishi; T.Kamada; M.Nagai; J.Tanaka and Y.Michitsuji
Proceedings of AVEC’10 Symposium, AVEC2010, 2010

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics　　　　　　　　　　　　　　　
M.Azman Abdullah; Y.Michitsuji; M.Nagai and N.Miyajima
Proceedings of the 5th Asian Conference on Multibody Dynamics, 2010

Analysis on High Frequency Vibration Characteristics of The Next Generation Shinkansen Seats　　　　　　　　　　　　　　　
S.Fukui; Y.Ichikura; M.Nagai; Y.Michitsuji; S.Watanabe; K.Hashimoto; Y.Yokoyama; T.Tomioka and R.Shimamune
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2009(STECH'09), 2009

Integrated Simulation Between Flexible Body of Catenary and Active Control Pantograph for Contact Force Variation Control　　　　　　　　　　　　　　　
M.Azman; Y.Michitsuji; M.Nagai and N.Miyajima
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2009, 2009

Analysis on Curving Performance and Hunting Stability of Active-Bogie-Steering Truck with Various Wheel Treads　　　　　　　　　　　　　　　
Y.Michitsuji; A.Matsumoto; Y.Suda; Y.Sato; H.Ohno; M.Adachi; M.Tanimoto; Y.Kishimoto; Y.Sato and T.Nakai
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2009(STECH'09), 2009

Research on Incident Analysis Using Drive Recorder (PART3:Analysis on relationship driving behavior and traffic circumstance based on forward collision near-miss incident data in car following situation)　　　　　　　　　　　　　　　
M.Shino; M.Kamata; M.Nagai; Y.Michitsuji; K.Moro
Proc. of the FISITA2008 World Automotive Congress, 2008

The Design of a Railway Bogie Self-steering Mechanism Considering the Nonlinear Effects of Linkage　　　　　　　　　　　　　　　
M.Nishina; Y.Michitsuji; Y.Suda and; W.Wang
Proc. of The 9th international conference on Motion and Vibration Control (Movic2008), 2008

Research on Incident Analysis Using,Drive Recorder (PART3:Analysis on,relationship driving behavior and,traffic circumstance based on forward,collision near-miss incident data in,car following situation)　　　　　　　　　　　　　　　
M.Shino; M.Kamata; M.Nagai; Y.Michitsuji and K.Moro
Proc. of the FISITA2008 World Automotive Congress, 2008

The Design of a Railway Bogie,Self-steering Mechanism ,Considering the Nonlinear Effects of,Linkage　　　　　　　　　　　　　　　
M.Nishina; Y.Michitsuji; Y.Suda and; W.Wang
Proc. of The 9th international conference on Motion and Vibration Control (Movic2008), 2008

Continuous Driving Data Sensing Towards Individual Adaptation of Advanced Driver Assistance System　　　　　　　　　　　　　　　
P.Raksincharoensak; Y.Michitsuji; M.Nagai
Proc. of the 14th World Congress on Intelligent Transport System, 2007

Analysis of Driver Behavior during Yellow Traffic Signals Using Drive Recorder Equipped Vehicles　　　　　　　　　　　　　　　
Y.Michitsuji; D.Mezaki; R.Pongsathorn and M.Nagai
Proc. of the 14th World Congress on Intelligent Transport System, 2007

Analysis of Collision Incident Using Drive Recorder　　　　　　　　　　　　　　　
Y.Michitsuji; Y.Morinaka; R.Pongsathorn and M.Nagai
Proc. of the Asia Pacific Automotive Congress 2007, 2007

Analysis of Driver Behavior During Yellow Traffic Signals Using Drive Recorder　　　　　　　　　　　　　　　
Y.Michitsuji; D.Mezaki; R.Pongsathorn; M.Nagai
Proc. of the Asia Pacific Automotive Congress 2007, 2007

Multibody Dynamics Simulation and Bogie Structure Evaluation for Active-Bogie-Steering Truck　　　　　　　　　　　　　　　
N.Miyajima; A.Matsumoto; Y.Suda; Y.Michitsuji; M.Komiyama; Y.Sato; H.Ohno; M.Tanimoto; Y.Kishimoto; Y.Sato; T.Nakai
Proc. of the ASME International Mechanical Engineering Congress and Exposition, 2007

A Framework for Individual Adaptation of Driver Assistance System, -Design Methodology with Utilizing Real-World Naturalistic Driving Database-　　　　　　　　　　　　　　　
P.Raksincharoensak; Y.Michitsuji; W.Khaisongkram; K.Maeda and; M.Nagai
Proc. of the FISITA2008 World Automotive Congress, 2007

都内における追突ヒヤリハット分析の現状　　　　　　　　　　　　　　　
鎌田 実; 小竹元基; 永井正夫; 道辻洋平
自動車技術会 ＧＩＡダイアログ, 2007

北海道でのヒヤリハット分析の現状　　　　　　　　　　　　　　　
道辻洋平
自動車技術会 ＧＩＡダイアログ, 2007

ドライブ・レコーダーの情報を分析し交通事故を削減する　　　　　　　　　　　　　　　
永井正夫; 道辻洋平
日経Automotive Technology Days 2007, 2007

Continuous Driving Data Sensing,Towards Individual Adaptation of,Advanced Driver Assistance System　　　　　　　　　　　　　　　
P.Raksincharoensak; Y.Michitsuji; and M.Nagai
Proc. of the 14th World Congress on Intelligent Transport System, 2007

Analysis of Driver Behavior During,Yellow Traffic Signals Using Drive,Recorder　　　　　　　　　　　　　　　
Y.Michitsuji; D.Mezaki; R.Pongsathorn and M.Nagai
Proc. of the Asia Pacific Automotive Congress 2007, 2007

Multibody Dynamics Simulation and,Bogie Structure Evaluation for,Active-Bogie-Steering Truck　　　　　　　　　　　　　　　
N.Miyajima; A.Matsumoto; Y.Suda; Y.Michitsuji; M.Komiyama; Y.Sato; H.Ohno; M.Tanimoto; Y.Kishimoto; Y.Sato and T.Nakai
Proc. of the ASME,International Mechanical,Engineering Congress,and Exposition, 2007

A Framework for Individual,Adaptation of Driver Assistance,System, -Design Methodology with,Utilizing Real-World Naturalistic,Driving Database-　　　　　　　　　　　　　　　
P.Raksincharoensak; Y.Michitsuji; W.Khaisongkram; K.Maeda and; M.Nagai
Proc. of the FISITA2008 World Automotive Congress, 2007

Evaluation of Running Performance for Active-Bogie Steering Truck with Multi-body Dynamics Simulation and Experiment on Rolling Test Stand　　　　　　　　　　　　　　　
A.Matsumoto; Y.Suda; Y.Michitsuji; M.Komiyama; Y.Sato; H.Ohno; M.Tanimoto; Y. kishimoto; Y. sato; T.Nakai
Proc. of the 4th Asian Conference on Multibody Dynamics 2006, 2006

Curving Simulation for Railway Vehicles with Friction Control　　　　　　　　　　　　　　　
K. Matsumoto; Y. Suda; H. Komine; Y. Michitsuji; M. Komiyama; M. Tomeoka; J. Kurihara; Y. Endo; T. Nakai; Y. sato; M. Tanimoto; Y. kishimoto
Proc. of the 4th Asian Conference on Multibody Dynamics 2006, 2006

Multibody Dynamics Simulation and Experimental Evaluation for Active-Bogie-Steering Bogie　　　　　　　　　　　　　　　
A.Matsumoto; Y. Sato; H. Ohno; Y. Suda; Y. Michitsuji; M. Komiyama; M. Tanimoto; Y. kishimoto; Y. sato; T.Nakai
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2006, 2006

Development of Drive Recorder Detecting Activation of Active Safety Devices　　　　　　　　　　　　　　　
Y.Michitsuji; M.Nagai; P.Raksincharoensak; S.Shigeeda; T.Iijima; M.Fujita; M.Shino; M.Kamata; K.Maeda
Proc. of the 8th International Symposium on Advanced Vehicle Control, 2006

Research on Incident Analysis using Drive Recorder (Part 1, Toward Database Construction)　　　　　　　　　　　　　　　
M.Kamata; M.Fujita; M.Shino; Y.Michitsuji; M.nagai
Proc. of the FISITA2006 World Automotive Congress, 2006

Research on Incident Analysis using Drive Recorder (Part 2, Toward Active Safety Assessment)　　　　　　　　　　　　　　　
M.Nagai; Y.Michitsuji; M.Kamata; M.Fujita
Proc. of the FISITA2006 World Automotive Congress, 2006

Self Power, Self Routing, Organic LRT System　　　　　　　　　　　　　　　
Y.Suda; Y.Michitsuji; H.Sugiyama; W.Wang; S.Lin and; K.Masuhara
The 3rd International,Workshop on Light Rail Transit, 2006

Running Performances of Steering Truck with Independently Rotating Wheel Considering Traction and Braking　　　　　　　　　　　　　　　
W. Wang; Y. Suda; Y. Michitsuji
Proc. of the 20th IAVSD Symposium, 2006

Control of Self-routing System using Active Steering Bogie with Independently Rotating Wheels　　　　　　　　　　　　　　　
Y. Michitusji; Y. Suda
Proc. of the 20th IAVSD Symposium, 2006

Curving Performance Evaluation for Active-Bogie-Steering Bogie with Multibody Dynamics Simulation and Experiment on Test Stand　　　　　　　　　　　　　　　
A. Matsumoto; Y. Sato; H. Ohno; Y. Suda; Y. Michitsuji; M. Komiyama; M. Tanimoto; Y. Kishimoto; Y. Sato; T. Nakai
Proc. of the 20th IAVSD Symposium, 2006

Evaluation of Running Performance,for Active-Bogie Steering Truck with,Multi-body Dynamics Simulation,and Experiment on Rolling Test,Stand　　　　　　　　　　　　　　　
A.Matsumoto; Y.Suda; Y.Michitsuji; M.Komiyama; Y.Sato; H.Ohno; M.Tanimoto; Y. kishimoto; Y. sato and T.Nakai
Proc. of the 4th Asian Conference on Multibody Dynamics 2006, 2006

Curving Simulation for Railway,Vehicles with Friction Control　　　　　　　　　　　　　　　
K. Matsumoto; Y. Suda; H. Komine; Y. Michitsuji; M. Komiyama; M. Tomeoka; J. Kurihara; Y. Endo; T. Nakai; Y. sato; M. Tanimoto; and Y. kishimoto
Proc. of the 4th Asian Conference on Multibody Dynamics 2006, 2006

Multibody Dynamics Simulation and,Experimental Evaluation for,Active-Bogie-Steering Bogie　　　　　　　　　　　　　　　
A.Matsumoto; Y. Sato; H. Ohno; Y. Suda; Y. Michitsuji; M. Komiyama; M. Tanimoto; Y. kishimoto; Y. sato; and T.Nakai
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2006, 2006

Development of Drive Recorder,Detecting Activation of Active Safety,Devices　　　　　　　　　　　　　　　
Y.Michitsuji; M.Nagai; P.Raksincharoensak; S.Shigeeda; T.Iijima; M.Fujita; M.Shino; M.Kamata and K.Maeda
Proc. of the 8th ,International Symposium on Advanced Vehicle,Control, 2006

Research on Incident Analysis using,Drive Recorder (Part 1, Toward,Database Construction)　　　　　　　　　　　　　　　
M.Kamata; M.Fujita; M.Shino; Y.Michitsuji and M.nagai
Proc. of the FISITA2006,World Automotive,Congress, 2006

Research on Incident Analysis using,Drive Recorder (Part 2, Toward,Active Safety Assessment)　　　　　　　　　　　　　　　
M.Nagai; Y.Michitsuji; M.Kamata; and M.Fujita
Proc. of the FISITA2006,World Automotive,Congress, 2006

Running Performances of Steering,Truck with Independently Rotating,Wheel Considering Traction and,Braking　　　　　　　　　　　　　　　
W. Wang; Y. Suda and Y. Michitsuji
Proc. of the 20th IAVSD Symposium, 2006

Control of Self-routing System using,Active Steering Bogie with,Independently Rotating Wheels　　　　　　　　　　　　　　　
Y. Michitusji and Y. Suda
Proc. of the 20th IAVSD Symposium, 2006

Curving Performance Evaluation for,Active-Bogie-Steering Bogie with,Multibody Dynamics Simulation and,Experiment on Test Stand　　　　　　　　　　　　　　　
A. Matsumoto; Y. Sato H. Ohno; Y. Suda; Y. Michitsuji; M. Komiyama; M. Tanimoto; Y. Kishimoto; Y. Sato and T. Nakai
Proc. of the 20th IAVSD Symposium, 2006

Study on the Electric Powered Active Control for High Speed Railway Vehicles　　　　　　　　　　　　　　　
R.Hayashi; K.Sasaki; Y.Suda and; Y.Michitsuji
19th IAVSD Symposium Milan, 2005

Running Performance of Power-Steering Railway Bogie with Independently Rotating Wheels　　　　　　　　　　　　　　　
Y. Michitsuji; Y. Suda
19th IAVSD Symposium Milan, 2005

Study on the Electric Powered Active,Control for High Speed Railway,Vehicles　　　　　　　　　　　　　　　
R.Hayashi; K.Sasaki; Y.Suda and; Y.Michitsuji
19th IAVSD Symposium,Milan, 2005

Running Performance of,Power-Steering Railway Bogie with Independently Rotating Wheels　　　　　　　　　　　　　　　
Y. Michitsuji and Y. Suda
19th IAVSD Symposium,Milan, 2005

Evaluation of Running Motion for Railway Vehicle with Controlled Single-Axle Bogies　　　　　　　　　　　　　　　
Y. Michitsuji; Y. Suda
Proc. of the 3rd Asian Conference on Multibody Dynamics 2004, 2004

Evaluation of Running Motion for,Railway Vehicle with Controlled,Single-Axle Bogies　　　　　　　　　　　　　　　
Y. Michitsuji and Y. Suda
Proc. of the 3rd Asian Conference on Multibody Dynamics 2004, 2004

Evaluation of Running Motion with Simulation and Experimental Platform for Single-Axle Scale Model Vehicle　　　　　　　　　　　　　　　
Y.Michitsuji; Y.Suda; T.Fujii; H.Komine; T.Iwasa
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2003, 2003

Evaluation of Running Motion with,Simulation and Experimental,Platform for Single-Axle Scale,Model Vehicle　　　　　　　　　　　　　　　
Y.Michitsuji; Y.Suda; T.Fujii; H.Komine and T.Iwasa
Proc. of the International Symposium on Speed-up and Service Technology for Railway and Maglev Systems 2003, 2003

Evaluation of Dynamic Properties of Controlled Rail Vehicle with Single-Axle Truck using Scale Model Test Platform　　　　　　　　　　　　　　　
Y.Suda; Y.Michitsuji; T.Fujii,T.Iwasa; H.Komine
Proc. of the 8th Mini-Conference on Vehicle System Dynamics Identification and Anomalies (VSDIA), 2002

Active Control of Mechatronic Vehicle　　　　　　　　　　　　　　　
Y.Michitsuji; Y.Suda
Proc. of the 6th International Conference on Motion and Vibration Control (MOVIC2006), 2002

Stabilization of Acrobat Robot in Upright Position on a Horizontal Bar　　　　　　　　　　　　　　　
M.Yamakita; T.Yonemura; Y.Michitsuji and Z.W.Luo
Proc. of IEEE International Conference on Robotics and Automation, 2002

Evaluation of Dynamic Properties of,Controlled Rail Vehicle with,Single-Axle Truck using Scale Model,Test Platform　　　　　　　　　　　　　　　
Y.Suda; Y.Michitsuji; T.Fujii; T.Iwasa and H.Komine
Proc. of the 8th Mini-Conference on Vehicle System Dynamics Identification and Anomalies (VSDIA), 2002

Active Control of Mechatronic,Vehicle　　　　　　　　　　　　　　　
Y.Michitsuji and Y.Suda
Proc. of the 6th International Conference on Motion and Vibration Control (MOVIC2006), 2002

Giant Swing via Forward Upward Circling of the Acrobat-Robot　　　　　　　　　　　　　　　
Y.Michitsuji; H.Sato and M.Yamakita
Proc. of American Control Conference (ACC), 2001

Swing Up of Inverted Pendulum using Vibrational Input　　　　　　　　　　　　　　　
Y.Michituji; K.Furuta and M.Yamakita
Proc. of Conference on Control Application (CCA), 2000

茨城大学

茨城大学

日本機械学会

自動車技術会

営業車両の状態監視による台車異常検知に関する研究　　　　　　　　　　　　　　　
Feb. 2022 - Feb. 2023

ノーズ可動クロッシング走行時のレール車輪接触状態の研究　　　　　　　　　　　　　　　
Feb. 2022 - Feb. 2023

鉄道車両の車輪とレールの相互作用に関する研究　　　　　　　　　　　　　　　
Jan. 2022 - Sep. 2022

空転再粘着制御時の台車挙動の解明（その３）　　　　　　　　　　　　　　　
Aug. 2021 - May 2022

鉄道車両の空気ばね圧に関する研究　　　　　　　　　　　　　　　
May 2021 - Mar. 2022

トングレール形状変更による局部摩耗抑制　　　　　　　　　　　　　　　
May 2021 - Mar. 2022

鉄道車両用評価試験業務効率化開発　　　　　　　　　　　　　　　
Nov. 2020 - Sep. 2021

空転再粘着制御時の台車挙動の解明（その2）　　　　　　　　　　　　　　　
Sep. 2020 - May 2021

鉄道車両の曲線通過時の振動発生メカニズム解明に関する研究　　　　　　　　　　　　　　　
Jul. 2020 - Mar. 2021

特願2023- 70562, 輪重推定方法、及びこの方法を用いた軌道の監視方法
谷本益久, 松本耕輔, 金子将大, 新井逸郎, 道辻洋平, 遠藤柚季

6924440, 2017-235583, 鉄道車両の摩擦係数演算方法及び走行安全性評価方法並びに軌道の潤滑状態管理方法
品川大輔、中居拓自、大野寛之、佐藤安弘、緒方正剛、道辻洋平、一柳洋輔

6512588, 2013-184620, 軌道状態測定方法及び軌道状態測定可能な営業車両

6275403, 2013-143341, 鉄道車両用台車、鉄道車両及び鉄道システム

5999617, 2011-264279, 交通信号制御装置

5884121, 2011-270995, 外軌脱線係数の要因解析方法

5344339, 2008-250327, ドライブレコーダ

5200242, 2006-553020, 自己操舵台車

5103629, 2007-557916, 車両動作測定装置および、車両非正常動作防止装置

4867004, 2006-020081, 車上分岐システム

4562655, 2005-511830, 自己操舵台車及びこの自己操舵台車を適用した鉄道車両

2006-006501, 鉄道車両における操舵用アクチュエータの制御方法

2005-170341, 2003-417044, 連接車両

2004-299671, 2004-077202, 鉄道車両支持用一軸台車

2004-161115, 2002-328653, 台車枠旋回装置付鉄道車両

第20回 実務機械設計法　　　　　　　　　　　　　　
lecturer
06 Feb. 2023

第19回 実務機械設計法　　　　　　　　　　　　　　
lecturer
24 Jan. 2022

第18回 実務機械設計法　　　　　　　　　　　　　　
lecturer
08 Feb. 2021

機械力学の基礎と振動解析・振動低減への活用法　　　　　　　　　　　　　　
lecturer
14 Jul. 2020

第17回 実務機械設計法　　　　　　　　　　　　　　
lecturer
24 Jun. 2020

デュアル・モード・ビークル（ＤＭＶ）に関する技術評価検討会（国土交通省）　　　　　　　　　　　　　　
others
2020

鉄道車両ブレーキ用制輪子に関する調査研究検討会（鉄道総研）　　　　　　　　　　　　　　
others
2015 - 2018

ATS-DKをベースとした自動運転に関する検討委員会（JR九州）　　　　　　　　　　　　　　
others
2018

日本学術会議 車の自動運転検討小委員会　　　　　　　　　　　　　　
others
2015 - 2017

全要検周期延伸委員会（JR東海）　　　　　　　　　　　　　　
others
東海旅客鉄道株式会社, 2017

運輸安全委員会 専門委員　　　　　　　　　　　　　　
others
2014 - 2015

日本学術会議 交通事故死傷者ゼロ検討小委員会　　　　　　　　　　　　　　
others
2012 - 2014

ISO/TC269(鉄道分野）国内委員会　　　　　　　　　　　　　　
others
2012