【摘要】 首先根据永磁同步电动机（PMSM）控制性能的要求给出其离散模型，然后设计了一种新颖的离散变结构控制。与以往变结构控制的不同点是，该控制加入一能量控制项，使得控制输入量在较小的情况下便可以达到很好的控制效果，这一点从控制角度来说是很重要的。最后通过仿真证明了该设计的有效性。更多还原

【Abstract】 The paper gives the discrete mode of PMSM according to its control ability firstly and a design of new quasi-sliding mode control is presented. In contrast to existing sliding mode control, this control adds an energy control item. The added item provides the design with good effect at less control input, that is important from the view point of control. At last, simulation results are presented to illustrate the effect of the control scheme.更多还原