混合动力电动汽车辅助功率单元模型辨识  

Identification for the Auxiliary Power Unit in a Hybrid Electric Vehicle

作　　者：孙逢春[1] 沈同全[1] 程夕明[1] 牟炳恒[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《北京理工大学学报》2007年第9期787-791,共5页Transactions of Beijing Institute of Technology

摘　　要：为提高模型辨识精度,基于阶跃响应,推导了二阶带零点/死区(SOPZ/DT)连续模型的直接辨识算法.以辅助功率单元(APU)微缩系统阶跃响应数据为依据,利用所推算法进行模型辨识.对所得模型进行仿真并与试验值相比较,结果证明,所得模型预测精度较高,可以作为控制模型得以应用.In order to improve the precision of model identification, direct identification algorithm for a second-order plus zeros and dead-time （SOPZ/DT） continuous system is deduced based on the step response data. According to the step response data of the mini auxiliary power unit （APU）, system model was identified based on the proposed algorithm. The simulation has been done based on the identified model and the simulation data compared with the test data. The results proved that the identified model has high precision and can be treated as the control model.

关 键 词：混合动力电动汽车 辅助功率单元 直接辨识 传递函数 

分 类 号：U469.72[机械工程—车辆工程]