中文摘要：

针对电动汽车低速大转矩的要求,提出了一种无离合器两挡变速电动汽车PMSM驱动控制方案,即基于转速模糊PI参数自整定的PMSM矢量控制系统,以期改善电动汽车高低速控制性能。仿真与实验结果表明,该系统克服了PMSM矢量控制系统传统转速PI控制中存在的超调量大、响应速度慢等缺点,通过转速跟踪实现了电动汽车无离合器的换挡,提高了电动汽车在各种路况下的实用性。

英文摘要：

In view of the low-speed and high-torque requirements of electric vehicles,a PMSM drive control scheme is proposed for clutchless two-speed electric vehicle,i.e.the PMSM vector control system based on fuzzy PI speed control with parameter self-tuning.The results of simulation and experiment show that the system overcomes the disadvantages of large overshoot and slow response in traditional speed PI control,and realizes the clutchless gear shifting of electric vehicles by speed tracking,and hence improves the applicability of electric vehicles on various road conditions.