信息与控制2018，Vol.47Issue(1)：29-35,7.DOI:10.13976/j.cnki.xk.2018.0029
汽车冗余线控转向系统的可靠性分析
Reliability Analysis on the Redundant Steer-by-Wire System
摘要
Abstract
This paper proposes a fault-tolerant architecture for application in the steer-by-wire system. The architecture involves the ECU redundancy, motor redundancy, bus transmission channel redundancy, sensor redundancy, soft-ware redundancy. By employing the Markov model of the sensor with triple-modular redundancy, we determined the relationship between the reliability, the failure rate and the fault detection coverage. Then, we used the failure mode and effects analysis (FMEA) method to list all kinds of system failures to form system-level FMEA tables, which have been used to establish the Markov model of the whole system. Through the solution of Markov differen-tial equations, we obtained the reliability of the whole system R(t). Compared with the non-redundant steer-by-wire system, our results showed that the reliability of the new system is always high in the life of the vehicle.关键词
马尔可夫模型/线控转向/故障模式与影响分析/容错/冗余/FlexRayKey words
Markov model/steering-by-wire/failure mode and effects analysis ( FMEA)/fault-tolerance/redundancy/FlexRay分类
信息技术与安全科学引用本文复制引用
吴俊鹏,景传奇,张凤登..汽车冗余线控转向系统的可靠性分析[J].信息与控制,2018,47(1):29-35,7.基金项目
上海市自然科学基金资助项目(15ZR1429300) （15ZR1429300）
