时滞系统的双自由度Smith模糊PID控制器设计与仿真

摘要

Smith fuzzy PID control was applied to time-delay system .Adding double-freedom parameters at controller ’ s input end can reduce both maximum overshoot and accommodation time of the system dynamic re-sponse and can enhance anti-jamming capability;improving fuzzy PID controller ’ s structure can decrease the difficulty in parameters setting .Simulation result proves the effectiveness of the algorithm designed .%针对大时滞系统采用Smith模糊PID算法控制，在控制器的输入端加入给定双自由度调节参数，有效地减小系统动态响应的最大超调量和调节时间，增强系统的抗干扰能力。通过改进模糊PID控制器结构解决控制器参数耦合的问题，降低了参数整定的难度。仿真研究验证所设计算法的有效性。