Fault-tolerant automobile steering based on diversity of steer-by-wire
DENG Yan-ning1，JIN Yu-hang2
（1. School of Mechanical Engineering，Ningbo University of Technology，Ningbo 315016，China；
2. Zhejiang Linix Motor Co.，Ltd.，Dongyang 322118，China）
Abstract：In order to solve the problems of steer-by-wire（SBW）system failures，the diversity fault-tolerant technology was applied tothe SBW system.The fault-tolerant automobile steering based on diversity of SBW was investigated. After the analysis of the stability ofthe diversity of steer-by-wire，the relationship between the SBW mechanism and backup mechanisms was established. A method waspresented to the fault-tolerant design based on diversity of SBW. A test participant was chosen who has no special skill excepts for over
10 years driving experience.On the driving simulator，the stability of SBW which was designed newly was tested.The experimental resultsshow that the driver can maneuver the vehicle with the steering wheel during the SBW failures. Both cost and volume increase byexcessive redundancy within SBW is avoided by the diversified design，thus facilitating SBW application on new-generation vehicles.
Key words：automobile；steer-by-wire（SBW）；fault-tolerant；diversification