发布时间：2015-01-24 来源：人大经济论坛

通信工程专业论文 具有短时延的网络控制系统的鲁棒控制研究 目录 摘要2 关键词2 Abstract2 Key words2 引言2 1 选题背景及意义3 1.1 网络控制系统的发展3 1.2 鲁棒控制简介4 1.3 网络诱导时延5 1.4本课题的研究意义5 2 时延网络及系统离散化6 2.1 时延网络6 2.2 线性连续系统的时间离散化7 2.2.1 近似离散化7 2.2.2 线性连续系统状态方程的离散化8 3 网络系统模型和稳定性分析10 3.1网络系统模型10 3.2稳定性分析及稳定控制器的设计11 3.2.1 稳定性分析11 3.2.2 控制器设计算法15 4 系统仿真15 5 结论17 致谢17 参考文献17 摘要：网络控制系统（NCS）是由网络技术和控制技术交叉融合发展而来的，具有资源共享、价格低、重量轻、安装方便、维护容易、能耗小等优点。本文主要针对具有短时延的网络控制系统，提出了一种基于鲁棒控制的方法来解决该类系统的稳定化控制问题。主要工作如下：首先对网络控制系统的发展及鲁棒控制的概念进行描述；接着考虑状态反馈控制规律，将闭环网络控制系统描述为一个离散时间线性不确定系统模型，得到了该系统的渐近稳定性条件，且该条件建立了系统稳定性与两个实验参数,即允许时延上界（ADB）和允许时延变换范围（ADVR），之间的定量关系。并且给出了稳定化反馈控制器的设计步骤。最后通过一个示例验证了所提方法的有效性。 关键词：网络控制系统；时变时延；渐近稳定；不确定性；鲁棒控制 A Robust Control Approach to Networked Control Systems with Short Time Delays Student majoring in Automation Tutor Abstract：Network control system (NCS) is developed from the cross-integration of network technology and control technology, which is with advantages of sharing resources, low price, light weight, easy installation and maintenance, low energy consumption and so on. A robust control approach is proposed in this paper to solve the stabilization problem for networked control systems (NCS) with short time-varying delays. Main tasks are as follows: First, describing the development of network control system and the concept of robust control. Next, by considering state feedback controllers, the closed-loop NCS is described as a discrete-time linear uncertain system model. Then, the asymptotic stability condition for the obtained closed-loop NCS is derived, which establishes the quantitative relation between the stability of the closed-loop NCS and two delay parameters, namely, the allowable delay upper bound(ADB) and the allowable delay variation range(ADVR). Furthermore, design procedures for the stabilizing controllers are also presented. An illustrative example is finally given to demonstrate the effectiveness of the proposed method. Key words：Networked control systems (NCS)；time-varying delay；asymptotic stability；Uncertainties；Robust control