5—1 引言 5—2 频率特性 5—3 开环系统的典型环节分解和开环频率特性 5—4 频率域稳定判据 5—5 稳定裕度 5—6 闭环系统的频域性能指标

2.1 数学基础 2.2 物理系统的微分方程描述 2.3 传递函数 2.4 方框图 2.5 信号流图 总结

3—1 系统时间响应的性能指标 3—2 一阶系统的时域分析 3—3 二阶系统的时域分析 3—4 高阶系统的时域分析 3—5 线性系统的稳定性分析 3—6 线性系统的稳态误差计算

自动控制的一般概念 • 自动控制的基本问题 • 自动控制系统的分类 • 自动控制系统的组成和常用术语 • 典型自动控制系统

西安石油大学电子工程学院：《自动控制理论 Modern Control System》精品课程教学资源（英文PPT课件）Introduction

3.1 Introduction 3.2 Typical test signals for time response of control systems 3.3 First –Order Systems 3.4 Performance of a Second-Order System 3.5 Concept of Stability 3.6 The Relative Stability of Feedback Control Systems

4.1 Introduction 4.2 Root Locus Concept 4.3 The Root Locus Construction Procedure for General System 4.4 The zero-angle (negative) root locus

西安石油大学电子工程学院：《自动控制理论 Modern Control System》精品课程教学资源（英文PPT课件）Mathematical Foundation

Frequency response is the analysis of the response of systemswhen subjected to a sinusoidal change in input. When a linear system is subjected to a sinusoidal input, its ultimate response is also a sustained sinusoidal wave, with the same frequency. The figure below compares the output response of a system (solid line) with a sinusoidal input (dashed line) disturbing the system

System compensation is the process of designing a controller that will produce an acceptable transient response while maintaining a desired steady-state accuracy .These two design objectives are conflicting in most systems ,since small errors imply high gains reduce system stability and may even drive the system unstable .Compensation may be thought of as the process of increasing the stability of a system without reducing its accuracy below minimum acceptable standards