具有加权因子的PID型模糊控制器分析及设计

为了降低模糊控制器的设计难度, 提高控制性能, 以二维模糊控制器为基础, 设计了一种具有加权因子的PID型模糊控制器, 并提出了基于普通PID控制器参数整定模糊控制器参数的方法。首先, 基于模糊控制器的解析结构推导, 从理论上证明了该类PID型模糊控制器是一个全局二维多值继电器与一个局部具有变结构PID控制器的组合; 然后, 基于平衡点处该类PID型模糊控制器与普通PID控制器之间的等效关系, 建立了模糊控制器系统化的参数设计方法; 最后, 仿真实验验证了本设计的有效性。

Analysis and design of PID-fuzzy controller with weighted factor

In order to decrease the design difficulty and improve the control performance, this paper designed a kind of PID-fuzzy controller with a weighted factor, and proposed a systematic design method of the parameters for the fuzzy controller on the basis of the conventional PID controller. Firstly, it proved the structure of the designed PID-fuzzy controller to be the combination of a global two dimensional multi-value delay and a local variable-structure PID controller. Secondly, it put forward the systematized design method for the PID-fuzzy controller on the basis of the steady state parameters of PID controller. Finally, it included the simulation results to demonstrate the effectiveness of the designed PID-fuzzy controller.