Modeling and simulation on Simulink for threephase asynchronous motor based on fuzzyPI control

ZHU Zhiyong, YU Shiming, SHI Jinpei

（Information Engineering College, Zhejiang University of Technology, Hangzhou 310023,  China）

Abstract: In order to design a better control system, the fuzzy PI regulator was adopted, which could improve the performance of a threephase asynchronous motor vector frequency conversion control system for the diaphragm metering pump The simulation model for the control system was created by using Matlab/Simulink In the fuzzy PI regulator, the control rules were set reasonable and the P value and I value were chosen suitable The experimental results show that the outputs curve of speed and current accord with theory There is no overshoot phenomenon in the whole acceleration process, and the time it costs is very short So the threephase asynchronous motor vector control system with fuzzyPI control  has excellent peformances of starting, accelerating and speed regulation

Key words: threephase asynchronous motor；diaphragm metering pumps；PID；fuzzyPI control