毕业设计：基于MATLAB的系统的时域响应分析.doc

摘要 关键词：Abstract The system time domain response analysis is an important indicator to measure control system. The so-called control system is the time-domain response of the system in time domain for solving differential equations, and then draw out the performance curve analysis system and the main parameters on system performance. But here, generally refers to a typical response curve of the response curve, the so-called step response and pulse response. A typical response to the idea of solving the system is listed first differential equations, both sides of the equation at the same time taking the Laplace transform of the system transfer function, and then draw out a systematic analysis of the graphic. MATLAB provides a system using time domain response analysis function can be quickly and easily observe whether the output of the system to meet the requirements. After the system obtained after simulation of the system transfer function, etc., such as rise time, adjusting time, overshoot and steady-state error and other parameters. The practice of the selected system is an integrated MATLAB system simulation software, got the system output function, you can see visual changes in the amount of system-state. Keywords: MATLAB software; the system time domain response analysis; system response curves 目 录 摘 要 I Abstract II 第1章 绪论 1 1.1 概述 1 1.2 时域响应分析 1 1.2.1 系统响应的输入信号 1 1.2.2 根据模型获得响应曲线 1 1.3 本次综合实践2的意义 2 第2章 MATLAB软件简介 3 2.1 MATLAB 3 2.2 MATLAB概述 3 2.2.1 MATLAB软件 3 2.2.2 Matlab的优势和特点 3 第3章 系统的软件设计思路 6 3.1 典型信号的生成 6 3.2 系统直流增益 7 3.3 系统的固有频率和阻尼系数 7 3.4 系统零输入响应 7 3.5 典型系统传递函数分析 8 3.6 任意给定输入的系统时域响应 9 3.7 典型系统传递函数分析应用举例 9 第4章 系统函数的仿真及分析 11 4.1 系统传递函数的模型建立及仿真 11 4.2 系统传递函数的仿真结果分析 13 结论 14 参考文献 15 致谢 16 第1章 绪论 1.1 概述 1.2 时域响应分析 系统的时域响应分析是衡量控制系统的重要指标，也是系统分析不可缺少的组成部分。 1.2.1 系统响应的输入信号 1. 用于系统响应的输入信号应具有下列特性： 能使系统的输出有足够显著的变化；在存在其他外扰作用下，能从系统的输出中分离出高的输入信号影响；易于实现；能激发系统特性的所有模态，包括低频和高频特性；对生产过程的影响要小。 2. 常用的输入信号 常用的输入信号有非周期函数、周期函数、非周期随机函数、周期随机函数等。非周期函数包含所