模糊控制在液位控制中的仿真应用设计书.doc

吉林化工学院毕业设计 模糊控制在液位控制中的仿真应用设计 Simulation Design Based on Fuzzy Controller in Liquid Level Control 学生学号： 学生姓名： 霍可栋 专业班级： 自动0904 指导教师： 吕春兰 职 称： 副教授 起止日期： 2013.03.04～2013.06.23 吉 林 化 工 学 院 Jilin Institute of Chemical Technology摘 要 本主要论述了应用模糊控制理论控制水箱位 首先根据双容水箱的系统结构，通过计算得到数学模型的传递函数；然后利用Matlab工具箱设计模糊控制器，具体包括以下三步：（1）确定模糊控制器的结构；（2）输入输出的模糊化；（3）模糊推理决策算法设计；最后分别用常规PID控制与模糊控制对双容水箱系统仿真。 通过常规PID控制与模糊控制仿真结果的对比，我们能看出模糊控制较传统的PID控制来讲具有响应速度快、适应性较强，即鲁棒性好、超调量小稳定时间较长等优点，显示出性能。 Abstract This paper is primarily on the applied fuzzy control theory control level in the reservoir system, first introduced in detail the fuzzy control theory of knowledge, and Then put forward to realize the control of the water level in the water tank scheme using fuzzy theory,finally simulation design of mathematical model of fuzzy controller with MATLAB based on the water tank water level . Firstly, according to the system structure of double tank, transfer function is obtained through the calculation of mathematical model. Then use the Matlab toolbox to design the fuzzy controller, including the following three steps: (1)Determine the structure of fuzzy controller; (2)Fuzzy input and output; (3)Design of fuzzy reasoning and decision algorithms. Finally, by using the MATLAB fuzzy logic toolbox and SIMULINK combination function,Compare the simulation result of conventional PID control and fuzzy control for dual-tank system. By contrast to conventional PID control and fuzzy control simulation results, we can see the fuzzy control over the conventional PID control with fast response, strong adaptability, robustness, and overshoot advantages of a small stable for a long time, showing the expected good steady performance. Key Words：Level control; Fuzzy controller; Fuzzy rules; FIS 目 录 摘 要 I Abstract II 第一章 绪论 1 1.1 模糊控制水箱水位系统概述 1 1.模糊控制理论简介 1 1.2.模糊控制理论的产生、发展及现状 1 1.2.2 模糊控制理论运用