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Fault-tolerant automobile steering based on diversity of steer-by-wire, braking and acceleration

Author

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  • Hayama, Ryouhei
  • Higashi, Masayasu
  • Kawahara, Sadahiro
  • Nakano, Shirou
  • Kumamoto, Hiromitsu

Abstract

Steer-by-wire (SBW) systems, which have no mechanical linkage between the steering wheel and front wheels, are expected to improve vehicle safety through better steering capability. SBW system failures, however, can cause hazardous driving situations. This paper introduces fault-tolerant architecture based on diversified steering mechanisms consisting of SBW backed up with steering by braking and acceleration during SBW failures. These backup steering functions are chosen according to driver's intention of deceleration and acceleration. A loss of SBW function during front-obstacle avoidance on a straight highway is investigated by driving simulator experiments. The results show that the driver can maneuver the vehicle by the steering wheel during the SBW failures. Both cost and volume increase by excessive redundancy within SBW is avoided by the diversified design, thus facilitating SBW application on new-generation vehicles.

Suggested Citation

  • Hayama, Ryouhei & Higashi, Masayasu & Kawahara, Sadahiro & Nakano, Shirou & Kumamoto, Hiromitsu, 2010. "Fault-tolerant automobile steering based on diversity of steer-by-wire, braking and acceleration," Reliability Engineering and System Safety, Elsevier, vol. 95(1), pages 10-17.
    • Handle: RePEc:eee:reensy:v:95:y:2010:i:1:p:10-17
    DOI: 10.1016/j.ress.2009.07.003
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    1. Hiromitsu Kumamoto, 2007. "Satisfying Safety Goals by Probabilistic Risk Assessment," Springer Series in Reliability Engineering, Springer, number 978-1-84628-682-7, December.
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    Cited by:

    1. Huang, Chao & Li, Liang, 2020. "Architectural design and analysis of a steer-by-wire system in view of functional safety concept," Reliability Engineering and System Safety, Elsevier, vol. 198(C).
    2. Huang, Shuang & Zhou, Chunjie & Yang, Lili & Qin, Yuanqing & Huang, Xiongfeng & Hu, Bowen, 2016. "Transient fault tolerant control for vehicle brake-by-wire systems," Reliability Engineering and System Safety, Elsevier, vol. 149(C), pages 148-163.

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