基于滞后时间削弱器的模糊PID控制系统设计与仿真  

The design and simulation of fuzzy PID control system based on decreasing delay-time controller

作　　者：董伟烽[1] 李钟慎[1] 

机构地区：[1]华侨大学机电及自动化学院,福建泉州362021

出　　处：《福州大学学报（自然科学版）》2009年第1期63-67,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省自然科学基金资助项目(E0710018);华侨大学高层次人才科研启动经费资助项目(07BS510)

摘　　要：针对大滞后对象控制难以及其PID参数整定难的问题,提出一种有效控制大滞后对象的方法.首先利用滞后时间削弱器将大滞后对象演变成小滞后的等效对象,然后用模糊控制对PID参数进行在线自整定,即构成模糊PID控制器,进而对小滞后的等效对象进行自适应控制.仿真结果表明,该控制系统与常规PID控制系统相比,具有良好的动、稳态特性和较强的抗干扰性、鲁棒性.Aiming at the problems that the large time -delay object was difficult to control and its PID parameter was hard to adjust, this paper proposed an effective method to control the large time - delay object. Based on the decreasing delay - time controller, the large time - delay object was changed into a small time - delay object. And then by using the method of the fuzzy control to adjust PID parameter itself online, a fuzzy PID controller was built in order to control the small time - delay object adaptively. The simulation has approved that the system, compared with the conventional PID control system, possesses good dynamic and static quality, and also has a relatively strong ability of anti -disturbance and robustness.

关 键 词：大滞后对象 滞后时间削弱器 模糊PID控制 鲁棒性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]