在永磁同步电机的运动控制系统中采用直接转矩控制策略，其性能的优劣程度取决于磁链和电磁转矩的控制情况，因此很有必要进一步的研究控制系统转矩和磁链的性能。-Permanent magnet synchronous motor is widely used in the field of speed control systems because of its various high performance,such as its small volume, high efficiency, rel