四驱电动汽车侧向稳定性控制功能安全研究  

Research on Lateral Stability Control and Function Safety for 4WDElectric Vehicle

作　　者：张鑫 刘元治 周春雨 马腾 Zhang Xin;Liu Yuanzhi;Zhou Chunyu;Ma Teng(Global R&D Center,China FAW Corporation Limited,Changchun 130013)

机构地区：[1]中国第一汽车股份有限公司研发总院,长春130013

出　　处：《汽车文摘》2023年第11期55-62,共8页Automotive Digest

摘　　要：侧向稳定性对电动汽车行驶安全至关重要,为了降低四驱电动汽车过度转向和不足转向失稳风险,基于ISO 26262,对集中式四驱电动汽车进行侧向稳定性控制功能的危害分析和风险评估,确定了侧向稳定性控制功能安全目标,并进行了CarSim和MATLAB/Simulink联合仿真分析及验证,研究设置的安全目标合理且满足四驱电动汽车稳定性控制的功能安全要求。四驱电动汽车的稳定性控制功能安全等级达到ASIL D,可有效避免四驱电动汽车的不足转向和过度转向失稳危害,研究成果可支撑四驱电动汽车的侧向稳定性控制功能安全机制的设计。Lateral stability is very important for driving of Electric Vehicles(EV).In order to reduce the risk of oversteering and understeering instability of 4WD EV,based on ISO 26262,the hazard analysis and risk assessment of the lateral stability control function of centralized 4WD EVs were carried out,and the safety goals of the lateral stability control function were determined.The co-simulation analysis of CarSim and MATLAB/Simulink was conducted,which proved that the stability control functional safety requirements are satisfied by safety goals determined.The research results show that the stability control functional safety level of 4WD EVs should be developed according to ASIL D,which can avoid hazards of understeering and oversteering for 4WD EVs,the research results can support the design of lateral stability control function and safety mechanism for 4WD EVs.

关 键 词：电动汽车 危害分析及风险评估 稳定性 功能安全 

分 类 号：U469.72[机械工程—车辆工程] U461.91[交通运输工程—载运工具运用工程]