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2007 Fiscal Year Final Research Report Summary

Fundamental study on seismic safety of vehicle running on elevated way

Research Project

Project/Area Number 18510143
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Social systems engineering/Safety system
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

KAMADA Takayashi  Tokyo University of Agriculture and Technology, Institute of Symbiotic Science and Technology, Associate Professor (60262119)

Project Period (FY) 2006 – 2007
KeywordsSeismic Engineering / Disaster Prevention / Automotive Engineering / Safety / Elevated Way / Bio Information
Research Abstract

Japan is a seismic country and there are many types of elevated way. These ways are designed without considering Vehicle response against earthquake. So some elevated ways have the natural frequency of 1- 2 Hz. Natural frequencies of vehicle lateral vibration and roll vibration are in the same area, so it is not desirable for resonance problem.
In this study, vehicle behaviors under an earthquake are analyzed by computer simulation and experiments with a driving simulator. The simulation model consists of a full vehicle model that has six degrees-of-freedom, a brush tire model, and a driver model called front preview driver model. The elevated highway is modeled as a single degree-of-freedom model with no coupling to the vehicle. Many parameters are investigated for elevated highway to find to find suitable value. Simulated responses of vehicle, experimental responses using driving simulator, results of subjective questionnaire for the drivers and bio-responses are used to determine the proper value. Brain waves, heart rates, electromyography are used as the bio-responses.
Response waves of the elevated way against seismic and sinusoidal inputs are used as the disturbances for the vehicle. Major conclusions of this study are as follows. The lateral deviation of vehicle increases as an earthquake input increases. If the natural frequency of the elevated way locates near the natural frequency of the vehicle motion (lateral vibration or roll motion), vehicle responses become bigger so the drivers feel uneasiness or fear in the worst case. Bigger damping is preferable for the elevated way. Even if the vehicle acceleration is not so big, drivers may become uncomfortable by the irregular vibration.

  • Research Products

    (5 results)

All 2007 2006

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] Experimental Study on Forward Collision Warning System Adapted for Driver Characteristics2006

    • Author(s)
      Takayoshi Kamada, Noboru Miyoshi, Masao Nagai and Hidehisa Yoshida
    • Journal Title

      Proceedings of Driving Simulation Conference ASIA/PACIFIC 2006 (CD-ROM)

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Experimental Study on Forward Collision Warning System Adapted for Driver Characteristics2006

    • Author(s)
      Takayoshi, Kamada, Noboru, Miyoshi, Masao, Nagai, Hidehisa, Yoshida
    • Journal Title

      Proceedings of Driving Simulation Conference ASIA/PACIFIC (CD-ROM)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Classification of Driver Steering Intention Based on Brain-Computer Interface Using Electroencephalogram2007

    • Author(s)
      Toshihiko Ikenishi, Takayoshi Kamada and Masao Nagai
    • Organizer
      14th Asia Pacific Automotive Engineering Conference
    • Place of Presentation
      Hollywood, California, USA
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 生体情報を用いた車両インタファイスの研究-脳波による運転操舵意図認識-2006

    • Author(s)
      池西俊仁、鎌田崇義、永井正夫
    • Organizer
      日本機械学会2006年度年次大会講演論文集
    • Place of Presentation
      熊本
    • Year and Date
      20060900
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Vehicle Operational Interface Based on Human Information - Recognition of Driving Steering Intention Based on EEG2006

    • Author(s)
      Toshihiko, Ikenishi, Takayoshi, Kamada, Masao, Nagai
    • Organizer
      JSME annual meeting
    • Place of Presentation
      Kumamoto
    • Year and Date
      20060900
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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