For contact information about worldwide offices, see the Math Works Web site. Writing S-Functions COPYRIGHT 1998-2002 by The Math Works, Inc. The software described in this document is fur d under a license agreement. The software may be used or copied only under the terms of the license agreement. No part of this manual may be photocopied or repro-

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For contact information about worldwide offices, see the MathWorks Web site. MAT-File Formo COPYRIGHT 1984-1999 by The Math Works, Inc. The software described in this docu nder a license agreement. The software may be used or copied only under the No part of this manual may be photocopied or repro- duced in any form without pri

COPYRIGHT 1998-2002 by The Math Works, Inc. The software described in this document is fur d under a license agreement. The software may be used or copied only under the terms of the license agreement. No part of this manual may be photocopied or repro- duced in any form The Math Works, Inc. FEDERAL ACQUISITI

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How to Contact The MathWorks 508-647-7000 Phone 508-647-7001 ax C The MathWorks, Inc Maill 3 Apple Hill Drive Natick. MA 01760-2098 http://www.mathworks.comWeb Anonymous FTP server

❖ 了解根轨迹的基本特性和相关概念 ❖ 了解根轨迹的类型划分，熟练掌握根轨迹的分类原则 ❖ 掌握根轨迹的绘制法则，并能够熟练地应用到根轨迹的绘制过程中 ❖ 学会应用主导极点、偶极子等概念近似分析系统的性能 ❖ 了解根轨迹形状与系统性能指标之间的关系 ◼ 根轨迹的基本概念 ◼ 根轨迹的绘制法则 ◼ 用根轨迹法分析系统的暂态特性 ◼ 小结

◼ 非线性系统动态过程的特点 ◼ 非线性环节及其对系统结构的影响 ◼ 非线性特性的描述函数 ◼ 分析非线性系统的描述函数法 ◼ 改善非线性系统性能的措施及非线性特性的利用 ◼ 相平面法 ◼ 小结

◼ 微分方程式的编写 ◼ 非线性数学模型线性化 ◼ 传递函数 ◼ 系统动态结构图 ◼ 系统传递函数和结构图的变换 ◼ 信号流图 ◼ 小结 ❖ 简单物理系统的微分方程和传递函数的列写及计算 ❖ 非线性模型的线性化方法 ❖ 结构图和信号流图的变换与化简 ❖ 开环传递函数和闭环传递函数的推导和计算

3.6.1 稳态误差的定义 3.6.2 系统类型 3.6.3 扰动作用下的稳态误差