Fuzzy-PI speed controller for PMLSM servo system
YANG Zi-long，YE Yun-yue，LU Qin-fen
（College of Electrical Engineering，Zhejiang University，Hangzhou 310027，China）
Abstract：Aiming at improving slow dynamic response and large output overshoot of conventional PI speed controller for permanentmagnet linear synchronous motor（PMLSM）servo system，fuzzy adaptive PI speed controller was proposed and simulation and experimentswere carried out compared with conventional PI controller. Based on PMLSM vector speed loop control，structure of fuzzy PI speed
controller and PMLSM servo system based on fuzzy PI speed controller was analyzed. Fuzzy PI speed controller was designed，andsimulation model was established in Matlab/Simulink environment. The simulation results were verified through actual PMLSM servosystem experiments. The results indicate that fuzzy PI speed controller can reduce overshooting and setting time efficiently in comparisonwith conventional PI controller. The experiment results were similar to the simulation results，which showed fuzzy PI speed controller canimprove dynamic performance of PMLSM servo system.
Key words：permanent magnet linear synchronous motor（PMLSM）；servo system；fuzzy-PI；speed control