著者

林 世彬 須田 義大 横溝 英明 小宮 浩資 平山 幸司

出版者

東京大学生産技術研究所

雑誌

生産研究 (ISSN:0037105X)

巻号頁・発行日

vol.71, no.2, pp.111-116, 2019-03-01 (Released:2019-03-30)

参考文献数

3

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昨今高速バスの都市間輸送における大幅な進展がみられるが,今後バス運転手の確保の課題や,より一層の安全性やサービスの向上を考慮すると,現在,産官学で鋭意開発され,実装化が期待される自動運転技術を導入することが有益であると考えられる.本稿では,内閣官房.ITS 戦略室によるロードマップ,制度整備大綱や,経済産業省.国道交通省で進められている隊列走行トラックの技術開発状況などを踏まえて,実装化に向けたコンセプトを検討した.

著者

道辻 洋平 志賀 亮介 須田 義大 林 世彬 牧島 信吾

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.851, pp.17-00068-17-00068, 2017 (Released:2017-07-25)

参考文献数

17

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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.