感应电机模糊自整定PID控制器设计与仿真

Design and simulation of IM fuzzy self-adjusting PID controller

感应电机(IM)的动力学特性是一个高阶、非线性、强耦合的系统,采用传统的PID控制方法进行控制,难以达到理想的控制效果。采用模糊控制理论与常规PID控制相结合组成模糊PID控制器,应用模糊算法在线自动整定PID参数的方法,并将其应用于感应电机调速控制系统。仿真与试验结果表明,该模糊PID控制的效果明显优于常规PID控制和模糊控制,具有无超调、响应快、鲁棒性强等特点,从而验证所用控制方法的可行性。

The system＇of IM is a high-order, non-linear and strong-coupling system. Using the traditional method for PID control, it is difficult to achieve fine control effection. By designing a fuzzy PID controller, fuzzy algorithm for on-line auto-tuning PID parameters is applied to the IM speed adjusting control system. The simulation results show that the method of fuzzy PID control has better control performance comparing with the conventional PID control, it has characteristics of no overshoot, fast response, strong robustness and so on. The feasibility of control methods is verified.