串联式混合动力汽车辅助功率单元鲁棒辨识

ROBUST IDENTIFICATION OF DIESEL AUXILIARY POWER UNIT FOR SERIES HYBRID ELECTRIC VEHICLES

串联式混合动力汽车柴油机辅助功率单元(APU)是一个多输入多输出的复杂非线性系统,为便于控制器的 设计,提出一种简单的面向控制的APU模型鲁棒辨识方法。该方法基于非线性变增益控制的原理,把APU系统 看成一个线性变参数系统,并将参数区域进行网格离散化,在每一工作点采用基于模型不确定性建模的方法进行 模型辨识,其结果表示为名义模型及其不确定性区域。最后在APU试验台架上进行了辨识试验,试验结果表明 该方法的可行性。

The diesel auxiliary power unit （APU） for series HEV is a multiple-input multiple-output complex nonlinear system. For its controller design, a simple identification method for robust control is presented. As the modeling approach for gain scheduling control, the APU is considered as a linear parameter varying system and the model parameters are gndded into a finite set. In each operating point, the system model is identified with the model uncertainty modeling technique, which is expressed as a nominal model and an uncertainty region. Finally, identification tests are performed with the proposed method on the APU bench and experimental results show its validity.