摘要面对经典控制系统局限，且随着计算机科学和控制科学的快速进步，网络控制系统应运而生。与传统的控制系统相比，网络控制系统有相当多优点，如减少系统的布线、可靠性较高、维护方便、可实现信息共享、可远程操作等。但与此同时，由于信息通过网络传输从而不可避免的在控制回路中引入了网络诱导时延、数据丢包等等不确定因素，严重影响了该网络控制系统的性能。如今，通信智能化给自动化的控制技术带来了深远的影响和挑战。当下，网络控制系统已然成为国际学术界研究的一个热点课题。本文主要研究基于切换系统方法的不确定网络控制系统分析与设计，了解网络控制系统的特性和相关控制方法，分析网络诱导时延对控制系统性能的影响，建立具有时延或丢包的网络控制系统的切换系统模型并进行稳定性分析，并给出一种具有 性能界的状态反馈控制器的设计方法以保证闭环网络控制系统的稳定性。63611

毕业论文关键词  网络控制系统；切换系统；线性矩阵不等式；  鲁棒控制。

毕业设计说明书（论文）外文摘要

Title     The modeling and control of network control systems based on switching systems.          

Abstract Facing the classical control system limitations, and with the rapid progress of computer science and the control of science, network control system (NCS) came into being. Compared with conventional control systems, network control system has considerable advantages, such as reduced system wiring, high reliability and easy maintenance. At the same time, because of information transmitted over the network and thus inevitably introduced in the control loop network-induced delay, packet loss, etc. Today, communication to the automation of intelligent control technology has brought profound impact and challenges. The moment, the network control system has become a hotspot of international academic research topic. This paper studies the method of uncertain switched systems based on networked control systems analysis and design, to understand the characteristics of the network control system and related control methods, analysis of network-induced delay performance of the control system, the establishment has a delay or loss of network control system switching system model and stability analysis, and gives a kind of performance boundaries of the state feedback controller design method to ensure the stability of the closed-loop control system network.

Keywords Network Control System, switching system, Linear matrix inequalities,   Robust Control.

1  绪论 5

1.1  网络控制系统简介 5

1.2  当前网络控制存在的问题 6

1.2.1  网络诱导时延 6

1.2.2  数据包丢失 7

1.2.3  其他的问题 8

2  切换控制系统的分析与运用 9

2.1  切换系统的定义和研究现状 9

2.2  切换系统的稳定性分析 10

2.3  切换控制的丢包NCS控制 10

3  简单的切换系统 11

3.1  PID控制器 11

3.2  PID控制器调节延时网络系统 12

3.3  基于切换的PID控制 14

4  基于切换系统的网络控制系统的建模及其稳定性分析