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

一、稳定裕度(适用最小相位系统-开环稳定系统) 工程上将GH曲线离开(-1,j0)的远近程度,叫稳定裕度,它是在频率域内衡量系统相对稳定性的指标。 曲线离(-1,j0)点的距离从两方面考虑:

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（重点难点与例题解析）第八章 非线性控制系统的分析

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（重点难点与例题解析）第九章 线性系统的状态空间分析与综合

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（重点难点与例题解析）第六章 线性系统的校正方法