新型模糊滑模控制器在交流位置伺服系统中的应用研究

Research of new fuzzy sliding mode controller on AC position servo system

为解决交流位置伺服系统速度不可控的问题,利用滑动模态的控制思想,设计出一种新型速度位置一体化控制器作为位置伺服系统外环控制器。通过对速度曲线的规划,实现理想的速度控制和精确的定位。在此基础上,采用模糊控制补偿负载变化和外界扰动对系统的影响,同时柔化控制信号,减弱了滑模控制系统中固有的抖振现象。仿真结果证明了所设计控制器的正确性及控制策略的有效性。

In order to solve the speed of AC servo system can not be controllable, using sliding mode control ideas, this paper designed a new velocity integration controller as outer loop controller, servo system. Speed curve through the planning, realized the ideal speed control and precise positioning. On this basis, the load compensation by fuzzy control system changed and the impact of external disturbances, while control signal soften sliding mode control system reduced the inherent chattering. Simula- tion results show the correctness of the designed controller and the control strategy is effective.