中文摘要：

为实现串联式混合动力电动汽车（SHEV）中辅助动力单元（APU）的经济、高效运行,研究了APU转速模糊控制系统;介绍了控制系统的构成及其主要功能以及模糊控制器的设计过程.试验结果表明,在阶跃输入下,系统转速输出具有超调量小、波动幅度小、响应时间满足要求的优点,较好地实现了APU转速控制的目的,控制品质良好.由道路实验结果可知,采用模糊控制器可以保证发动机在经济运行区域工作,同时也保证了发电机的运行效率,能达到预期的控制目的和效果.

英文摘要：

In view of the characteristics of APU with the parameters discreteness,the nonlinearity and uncertainty,a new type speed control system of APU based on the theory of fuzzy control was developed in this paper,to ensure the running of gasoline engine in APU to be economic and with high efficiency.The structure and working principle of the fuzzy controller were described,and the design procedure of the fuzzy controller was given in detail.The experimental results show that the step response of the speed is small in the overshoot,little in the fluctuation range and the regulation time.This control system has not only achieved the purpose of speed control of APU but also has good quality.The results are validated by road tests,and show that the fuzzy controller can guarantee the engine is running in the economic region,while ensure the efficiency of generator.The desired purpose and effect of control system can be achieved.