基于负载转矩补偿的永磁同步电机滑模控制

Sliding Mode Control of Permanent Magnet Synchronous Motor based on Load Torque Compensation

针对永磁同步电机速度控制中出现抗扰动和超调问题,采用滑模变结构和负载转矩补偿相结合的控制方案,提出一种改进的滑模变结构转矩补偿前馈控制方法,对系统的建模过程进行了详细介绍并进行了仿真验证,通过与传统的PI控制器、传统SMC控制器的比较可知,改进的滑模变结构前馈补偿控制方法具有响应速度快、超调小,并且使滑模控制器的固有抖振得到有效抑制.

Aiming at the problem of anti-perturbation and overshoot in speed control of permanent magnet synchronous motor,an improved sliding mode variable structure torque compensation feedforward control method is proposed by using the combination of sliding mode variable structure and load torque compensation. The modeling process of the system is described in detail,and the simulation is carried out. Compared with the traditional PI controller and the traditional SMC controller,the improved sliding mode variable structure feedforward compensation control method has the advantages of fast response speed,and the inherent dither of the sliding mode controller is effectively suppressed.