文档介绍：模糊PID控制在液位控制中的应用
摘要
液位控制是工业控制中的一个重要问题,针对液位控制过程中存在大滞后、时变、非线性的特点,为适应复杂系统的控制要求,人们研制了种类繁多的先进的智能控制器,模糊PID控制器便是其中之一。模糊PID控制结合了PID控制算法和模糊控制方法的优点,可以在线实现PID参数的调整,使控制系统的响应速度快,过渡过程时间大大缩短,超调量减少,振荡次数少,具有较强的鲁棒性和稳定性,在模糊控制中扮演着十分重要的角色。本文介绍了模糊PID控制在双容水箱的液位控制系统中的应用。首先建立了液位控制系统数学模型,介绍了PID控制、模糊控制以及模糊PID的基本原理,然后利用MATLAB工具生成仿真曲线。
关键词:液位系统,液位控制,模糊PID控制,仿真
The Application on Fuzzy PID Control for Water Level Control System
Abstract
Water level control is an important problem in industry at the characteristics of long time lag, nonlinearity and variation with time in the process of level control, a vast range of advanced intelligent controllers are designed to meet the control demand plex systems,——among which is fuzzy PID bining the advantages of PID control algorithm and fuzzy control,fuzzy PID control could realize online adjusting of PID parameters, so as to quicken the control system response speed, reduce the overshoot, shorten the transitional period, and decrease the oscillating system has strong robustness and stability,and plays a leading role in fuzzy thesis introduces the application of fuzzy PID control in double-tank water level system. It first builds a mathematical model of the water level control system, illustrating the rationale of PID control, fuzzy control and fuzzy it uses a tool of MATLAB to have a simulating experiment of set-point tracking,disturbance rejection, and modating to the object's parameter variation. The results show paring with the normal PID algorithm, fuzzy PID control algorithm has characteristics such as strong robustness and good dynamic performance. This control method is effective to the doubletank water level system.
Keywordstem: Water Level Syter ,Water level control, fuzzy PID control, simulation
目录
1 绪论 1
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2 液位控制系统结构及其建模 6
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