毕业设计（论文）-模糊自适应PID控制器设计.doc

文档介绍：模糊自整定PID控制器设计
摘要
本文主要研究的是有关模糊自整定PID控制器的设计与仿真,其中涉及到模糊控制,PID控制器,参数自整定三个领域的相关内容。
首先,我们先讨论了模糊控制的原理,历史和它的发展趋势,然后介绍了常规PID控制器和自整定算法的一些内容,最后,结合上述两种控制器的优点,设计出一种基于模糊推理的参数自整定模糊PID控制器。
模糊控制器是把专家的PID参数整定经验总结成模糊控制规则,然后形成模糊控制查询表,模糊控制过程实际上就是一个查表的过程。模糊控制对具有非线性,时变性,较大的随机干扰等不具有精确的数学模型的控制系统具有较好的控制效果。而PID参数整定方法是最基本的也是最常用的方法被广泛的应用于各个领域。将两者有效的结合形成的模糊自整定PID控制器,它的简单性和可实施性是现而易见的。
本文将这种模糊自整定PID控制器应用于带有时滞的二阶系统中并将其同Z-N整定方法,临界灵敏度等常规PID整定方法进行比较。
结果表明,这种控制算法的控制效果明显好于传统的方法。
关键词:模糊控制, PID控制, 参数自整定, 隶属函数
Design of Fuzzy Self-tuning PID Controller
Abstract
In this paper, the design and simulation of a self-turning fuzzy PID type controller is proposed. The fuzzy control, PID controller and parameters self-turning are described.
Firstly, the principle, history and developing trend of fuzzy control are discussed. Secondly, the conventional PID controller and self-turning are introduced. Finally, a self-turning PID controller based on fuzzy inferences is designed bining the advantages of first one with a second one.
A fuzzy controller is built based on the expert’s experiences, then it is changed into an inquiry table. The process of the fuzzy control practically inquires the table. The fuzzy control is good at the inexactly mathematical model such as non-linear, time-variant systems and so on. PID self-turning is the basest and most-used. After attaining the PID self-turning to the fuzzy controller, it is obvious that this method is simple and feasible.
In this paper, the fuzzy control PID controller is used to a two-order plus time delay system. Simulation results show that the algorithm has better performance than traditional methods.
Keywords Fuzzy control, PID control, self-turning, membership function
目录
第一章绪论 1
1
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2
PID控制算法的基本理论 3
PID控制器参数整定 4
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第二章模糊控制概述 5
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