MATLAB一类控制系统零点与响应曲线变化趋势研究
本文是通过对高阶系统在单位阶跃响应下的时域分析，得到相应的动态性能指标估算方法，并对系统的动态性能进行分析。本文选取三阶系统作为研究的对象，运用MATLAB软件建立了系统仿真模型，对选取的控制系统进行仿真分析。通过对比不同零点下系统的动态性能指标，研究系统零点位置的分布对各动态性能指标变化趋势的影响，最终归纳总结出该类系统闭环零点的影响。
关键词 高阶系统 动态性能 零点 响应曲线 仿真模型
毕业设计说明书（毕业论文）外文摘要
Title Study on zero Points and Variation Trend of One Type
of Control System
Abstract
Analysing the zero point and the response curve of the control system is very important for us to study the dynamic performance of the system.In the daily life, the control system can be seen everywhere, and many control systems use the higher order system to control.For the higher order systems which can not be approximated by the one or two order systems, the dynamic performance of the index is more complex. The approximate analysis of the higher order systems is usually closed by the closed-loop dominant pole as the starting point, and then the estimation formula of the dynamic performance of the higher order control system is obtained.
In this paper, the dynamic performance index estimation method is obtained by analyzing the time domain of the high order system under the step response of the unit step response, and the dynamic performance of the system is analyzed.This paper selects the three order system as the object of study, and uses MATLAB software to establish the system simulation model, and simulates the selected control system.Through comparing the dynamic performance index of the systems of different zero points，the effect of the distribution of the zero position of the system on the variation trend of the dynamic performance index is studied, and the effect of the closed-loop zero of the system is concluded finally.
Keywords Higher order system Dynamic performance Zero point Response curve Simulation model
目次
1 绪论 1
1．1 课题研究背景及意义 1
1．2 自动控制的目的和控制理论的研究现状 1
1．3 关于一类控制系统的选取 2
1．4 本文主要研究内容 2
2 高阶系统的时域分析 4
2．1 高阶系统的单位阶跃响应 4
2．2 闭环主导极点 6
2．3 高阶系统的动态性能估算 7
2．4 本章小结 11
3 三阶系统响应曲线的MATLAB实现 12
3．1 利用MATLAB绘制响应曲线 12
3．2 本章小结 14
4 不同零点分布的三阶系统响应曲线的仿真 15
上一篇：具有信道衰落的随机系统滤波器设计