基于Simulink的二阶控制系统时域仿真与分析.doc

基于Simulink的二阶控制系统时域仿真与分析 PAGE 18 学校代码 密级 学号 分类号 基于Simulink的二阶控制系统时域仿真与分析 题 目 （中、英文） Second-order Control System Time Domain Simulation and Analysis Based on Simulink 学科门类 指导教师 提交论文日期 成绩评定 PAGE 19 摘 要 自动控制时域分析方法是分析控制系统性能最有效的方法之一，是一种在时间域中对系统进行分析的方法，具有直接、准确的优点。但其分析过程的计算量较大、结果不易分析，并且系统分析结果提供的信息对下一步如何改造，综合自动控制系统是不够的。为了更加直观、准确和方便的分析自动控制系统的性能指标，可以利用Matlab环境下的Simulink软件工具。只要建立好控制系统的模型，利用 Simulink软件就能够绘出控制系统输出响应的图形,就能够比较方便和准确的分析控制系统性能。本文较详细地介绍了自动控制系统时域分析方法，主要研究了使用Simulink软件在时域中对自动控制系统建模、仿真来进行时域分析，重点分析了二阶系统参数对时域响应性能的影响，而且应用Simulink软件研究改善系统时域响应性能的方法，为进一步提高控制系统性能和改造系统提供了有利的理论基础。 关键词：Simulink；时域分析；二阶控制系统 Abstract The automatic control time domain and simulation analysis method is one of the most effective methods in analyzing the performance of automatic control system. The method that is a direct analysis on time domain is frank and exact. But the method often involves in the massive complicated computation and its result is difficult to deal with. The information provided by the result is not enough to rebuild and integrate control system. In order to analyze the system performances in more accurate, direct and convenient ways, Simulink under the Matlab environment can be used. As long as the model of a kind of control system is built, Simulink can be utilized to plot figure of output results of the control system. The control system can be analyzed directly and correctly. The automatic control time domain analysis method is introduced in detail in the paper. How to use Simulink to build control system model and simulate in time domain is studied. The relation of the parameters and performances of control system is determined. Simulink is executed to research how to improve the performances of automatic control system. The theory of increasing the performances of automatic control system and reconstructing control system is given. Keywords: Simulink; Time domain analysis; Second-order control system 目 录 TOC \o 1-3 \h \z \u   HYPERLI