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针对SVM 策略改进的PMSM-DTC 系统中转矩和磁链波动仍然较大以及终端滑模存在抖振的问题,结合模糊策略,设计一种非奇异终端模糊滑模控制器,用以取代SVM策略中的转速PI 控制器.首先根据终端滑模原理设计了非奇异终端滑模面,再与直接转矩控制原理相结合设计滑模控制律,并针对控制律中积分部分引起的抖振,结合模糊控制,通过增加的模糊变量调整滑模运动阶段起主要作用的转矩以减弱抖振.仿真结果表明该策略能提高系统动静态性能,可以降低电机转矩和磁链波动.“,”In the PMSM-DTC system improved with SVM-based mothed, there still exist problems of relatively large flux and torque ripple, chattering of the terminal sliding mode. The study introduces a method of fuzzy nonsingular terminal sliding mode controller combined with fuzzy strategy to replace the speed PI controller in the SVM-based mothed. First, the research designs the nonsingular terminal sliding surface and sliding mode control law according to the terminal sliding mode and direct torque control. Then, combing fuzzy control with sliding mode control avoids chattering induced by the integral part of the control law by increasing the fuzzy variable to adjust the major torque in the sliding movement stage to weaken the chattering. Simulation results show that this strategy can improve the system dynamic and static performance. Also, it can further reduce the motor torque and flux ripple.