双容水箱PID液位控制系统的仿真本科生毕业设计（已处理）.doc

双容水箱PID液位控制系统的仿真本科生毕业设计 关键词:MATLAB;PID控制;串级控制;液位系统仿真 More let water tank PID level control system simulation Abstract Because single loop control system has not overcome some of the liquid level control issues, such as: big time delay, non-linear process, capacity lag and so on. So this design is proposed to solve these problems, the cascade control for single loop control system cant control problems were solved, meanwhile compared single loop control system and cascade control system differences The graduation design topic is based on the MATLAB PID level control system simulation. In the design, I mainly responsible is double let water tank simulation. The main content of this article include: software MATLAB, the introduction and application of the simulation of use in Simulink problems that should be paid attention to. Grasp the basic ideas of PID control to be familiar with PID algorithm, PID parameters setting method. Water tank with the experimental curves to determine the characteristics, through the test method analysis level control system was established mathematical model, the water tank designed cascade control system for the selected level control; choose the appropriate control system PID algorithm. MATLAB/Simulink establishes level cascade control system, the regulator using fuzzy PID control system. Through the comparative simulation single loop level control system and a cascade control system control differences, and parameter setting and various parameters control performance comparison, application gets PID control algorithm is analyzed for simulation curve, summarizes the parameters on the system performance impact. Keywords: MATLAB;PID control; Cascade control; Level system simulation 目录 1 绪论 1 1. 1 问题的提出及研究意义 1 1.1.1 水箱控制系统研究的意义 1 1.2 PID控制算法的研究现状 2 1.3 PID控制的应用与发展 2 1.4 本次设计的主要工作 3 2 MATLAB仿真概述 4 2.1 过程控制系统的MATLAB计算与仿真 4 2.1.1 控制系统计算机仿真 4 2.2 控制系统的MATLAB计算与仿真 4 3 PID控制简介及其整定方法 7 3.1 PID控制简介 7 3.1.1 PID控制原理 7 3.2 PID控制算法 8 3.2.1 位置型