Design and Implementation of Stator Resistance Identifier Based on Fuzzy Control

Abstract

The change of stator resistance has an important influence on the performance of asynchronous motor direct torque control system. Accurate acquisition of stator resistance is very important in high-performance motor control system. According to fuzzy control theory, we devise a stator resistance identifier. On this basis, the direct torque control system of asynchronous motor is designed by using MATLAB software. At the same time，through this simulation, we find the error of identified stator resistance is small, the system respond is quick, and the robustness is good. Design of Stator Resistance Iidentifier The Basic Idea of Fuzzy Control. Fuzzy control belongs to the category of intelligent control, and it is a form of human intelligence. The successful application of fuzzy control in industry, home appliances and high technology area fully shows that fuzzy control has great potential for development and application. Because of its easy to use, simple, good effect and so on. It is mainly applied in all kinds of control systems,especially in the case of model uncertain, nonlinear, large time delay systems.The schematic diagram of the fuzzy controller is given in Fig. 1.