摘要
温度控制具有非线性、大惯性、时变性等特点,常规PID控制和常规模糊控制还不能使温度的控制达到理想效果。设计一种自适应模糊PID控制器,该控制器在大偏差范围内采用模糊控制,根据偏差和偏差变化的需要实时调整PID参数,小偏差范围内采用PID精确控制。介绍自适应模糊PID控制器的构成和原理,并利用Matlab/Simulink和模糊逻辑工具箱对其进行仿真,仿真结果表明,这种自适应PID控制器既具有模糊控制灵活、响应快、适应性强的特点,又具有PID控制精度高的特点,改善了温度控制的效果。
As temperature system has the characteristics of non- linearity,large inertia and time variability, normal PID and normal fuzzy control can not meet the requirement of precise molding system. A self - adaptive fuzzy control in large area and PID precision output in small area, which adjusts PID parameters based on deviation and the deviation change. The structure and principle of self- adaptive fuzzy PID controller are analysed,and Matlab/Simulink and fuzzy logic toolbox are simulated, the results of simulation show that the sell - adaptive fuzzy controller posses the flexible and adaptability advantages of fuzzy control and the precise character of PID control. It improves the control effect on temperature system.
出处
《现代电子技术》
2010年第5期110-111,114,共3页
Modern Electronics Technique
