混合模糊PID控制器在伺服控制系统中的应用

Application of Hybrid Fuzzy PID Controller in Servo Control System

在分析了直流无刷电机伺服控制系统的基础上,提出了一种混合模糊PID跟踪控制器模型。该模糊PID控制器由3个并行的次模糊控制器组成,应用模糊算法在线自动整定PID参数;并利用Matlab/Simulink建立仿真模型对模糊推理控制算法进行验证。仿真结果表明,混合模糊PID控制器的动静态特性优于传统单一的PID控制,对设计性能优良的伺服控制系统具有借鉴意义。

On the basis of analyzing the servo control system for DC brushless motor, the integrated model of hybrid fuzzy PID tracking controller is proposed. This fuzzy PID controller is composed of three of fuzzy PID sub-controllers in parallel; the PID parameters are automatically tuned on line by adopting fuzzy algorithm. The fuzzy inference control algorithm is verified with the simulation model built under Maflab/Simulink. The result of simulation indicates that hybrid fuzzy control PID controller offers better dynamic and static characteristics than those of conventional PID control; it is worth to be consulted in designing servo control systems with superior performance.