基于模糊-PI双模控制的两相伺服电动机速度控制系统

The rotation speed control of two-phase servo motor based on fuzzy-PI dual-mode

本文提出了一种两相伺服电动机模糊-PI双模速度控制系统的设计。其主要思想在输入信号之后,设置了一个带阈值E模态转换器,根据阈值E与电动机转速误差e的比较结果确定其模态:当电动机转速误差e大于阈值E时,运行其模糊控制器,以获得良好的动态性能,当电动机转速误差e小于阈值E时,运行其PI控制器,以获得良好的稳态性能。MATLAB/Simulink仿真结果表明,模糊-PI双模控制相比传统模糊控制和常规PID控制在两相伺服电动机速度控制中可以获得更好的动态性能和稳态性能,且具有很好的鲁棒性。

A design of the rotation speed control of two-phase servo motor based on the fuzzy-PI dual-mode is proposed. The idea is that if an E-mode converter with threshold value behind the input signals is set up, the controller modal can be defined according to the comparison between the threshold value E and the motor rotation speed error e. When the motor rotation speed error e is the greater than the threshold value E, the fuzzy controller will be utilized to gain a good dynamical performance of control system. On the contrary, the PI controller will be used to gain a good steady-state performance. The computer simulation result shows that the fuzzy-PI dual-mode controller have the better dynamic performance and steady-state performance compared to that of fuzzy controller and PID controller for rotation speed control of two-phase servo motor.