基于HIL的车用电机控制器故障保护策略测试

Fault Protection Strategy Test of Vehicle Motor Controller Based on HIL

随着新能源汽车电控系统的发展以及复杂度和集成度的提高,整车故障保护策略已成为软件开发的重要组成部分之一,但测试难度较大且风险较高,尤其针对电机控制系统,传统的台架和实车测试往往不能满足需求。通过对电机控制系统故障保护策略及硬件在环(HIL)测试方案的介绍,并结合dSPACE仿真系统,针对车用电机控制单元搭建了信号级HIL仿真测试平台。借助上位机实时模拟电机不同故障工况,并进行试验和测试结果的分析,验证了电机控制器故障保护策略的正确性,同时体现出HIL测试方法的优越性。

With the development of new energy vehicle electronic control system and the increase of complexity and integration,the vehicle fault protection strategy has become an important part of software development.However,the test was difficult and risky,especially for motor control system.Traditional bench and real vehicle tests always could not meet the actual requirements.The motor control system fault protection strategy and its hardware-in-the-loop(HIL)test scheme were introduced.Combined with the dSPACE simulation system,a signal-level HIL simulation test platform was built for the vehicle motor control unit.Real-time simulation was performed for different faults of the motor.By analysis of the test results,the correctness of the motor controller fault protection strategy was verified,and the superiority of the HIL test method was proved.