永磁直线伺服系统模糊PI速度控制器研究

针对永磁直线同步电机伺服系统常规PI速度调节器动态响应慢、输出超调大等问题,提出了模糊自适应PI速度控制器,对比常规PI速度控制器进行了仿真和实验。基于永磁直线同步电机矢量速度闭环控制,分析了模糊PI速度控制器和基于模糊PI控制器的伺服矢量控制系统的结构,设计了模糊PI速度控制器,在Matlab/Simulink仿真环境下,建立了基于模糊PI速度控制器的永磁直线同步电机伺服系统仿真模型,并通过实际永磁同步直线电机伺服系统实验对仿真结果进行了实验验证。研究结果表明,模糊PI速度控制器,相对于常规PI控制器,可以明显降低超调量和调节时间。将仿真结果和试验结果对比,两者基本吻合,说明模糊PI速度控制确实可以较好地改善永磁直线同步电机伺服系统的动态性能。

Fuzzy-PI speed controller for PMLSM servo system

Aiming at improving slow dynamic response and large output overshoot of conventional PI speed controller for permanent magnet linear synchronous motor（PMLSM） servo system,fuzzy adaptive PI speed controller was proposed and simulation and experiments were 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,and simulation model was established in Matlab/Simulink environment.The simulation results were verified through actual PMLSM servo system experiments.The results indicate that fuzzy PI speed controller can reduce overshooting and setting time efficiently in comparison with conventional PI controller.The experiment results were similar to the simulation results,which showed fuzzy PI speed controller can improve dynamic performance of PMLSM servo system.