【摘要】 为了提高永磁同步电机调速系统的动态与稳态性能,该文提出了一种基于新型组合趋近律的滑模控制器。该趋近律基于幂次趋近律,为了削弱系统进入滑模面后的抖振,引入新型饱和函数替代开关函数,为了提高系统远离滑模面时的趋近速度,结合了变速趋近律。在此基础上,给出了该方法的抗积分饱和方案。仿真结果表明,通过与一般指数趋近律相比较,缩短了系统到达稳态的时间,削弱了电机的转矩脉动。更多还原

【Abstract】 In order to improve the dynamic and steady-state performance of permanent magnet synchronous motor(PMSM) speed control system,a sliding mode controller based on a new combined reaching law is proposed. The reaching law is based on the law of power reaching law. In order to weaken the chattering after the system enters the sliding surface,a new saturation function is introduced to replace the switching function. The variable speed reaching law is combined which in order to improve the approaching speed of the system away from the sliding surface. On this basis,the anti integral saturation scheme of the method is given. Compared with the general exponential reaching law,the simulation results show that,the time of system reaching steady state is shortened and the torque ripple of motor is weakened.更多还原