异步电机调速系统的新型模糊控制方法

电气传动系统的智能控制是目前一个研究热点.本文分析了异步电机调速系统中采用PI控制方法的不足,提出了一种新型的模糊PI复合控制方法.在异步电机双闭环调速系统中,电流控制采用滞环电流调节器,转速控制采用模糊PI复合控制,仿真结果表明:这种新型的模糊PI复合控制方法响应快、无超调、鲁棒性强,较传统PI控制具有更好的动、静态特性.

Novel Fuzzy Control Strategy of AC Asynchronous Motor Speed Servo System

Intelligent control is getting a lot of attentions in the area of electric drive system. A novel fuzzy PI hybrid control method is proposed to control the speed servo system based on the analysis of traditional PI control. In the double loop of speed servo system the hysteresis current calculator is implemented in the current loop, and in the speed loop the fuzzy PI hybrid control scheme is applied. Several test cases based on dynamic model of AC asynchronous motor were conducted to confirm the effectiveness of the proposed controller. The simulation results show the improved performance is superior to the traditional PI controller. It works well with high dynamic and static performance, because of its advantage in quick response and good robustness.