具有短時延的網絡控制系統的魯棒控制研究

電子通信論文編號:TX296  論文字數:10555,頁數:20
具有短時延的網絡控制系統的魯棒控制研究
     
目錄

摘要 2
關鍵詞 2
Abstract 2
Key words 2
引言 2
1 選題背景及意義 3
1.1 網絡控制系統的發展 3
1.2 魯棒控制簡介 4
1.3 網絡誘導時延 5
1.4本課題的研究意義 5
2 時延網絡及系統離散化 6
2.1 時延網絡 6
2.2 線性連續系統的時間離散化 7
2.2.1 近似離散化 7
2.2.2 線性連續系統狀態方程的離散化 8
3 網絡系統模型和穩定性分析 10
3.1網絡系統模型 10
3.2穩定性分析及穩定控制器的設計 11
3.2.1 穩定性分析 11
3.2.2 控制器設計算法 15
4 系統仿真 15
5 結論 17
致謝 17
參考文獻 17

摘要：網絡控制系統（NCS）是由網絡技術和控制技術交叉融合發展而來的，具有資源共享、價格低、重量輕、安裝方便、維護容易、能耗小等優點。本文主要針對具有短時延的網絡控制系統，提出了一種基于魯棒控制的方法來解決該類系統的穩定化控制問題。主要工作如下：首先對網絡控制系統的發展及魯棒控制的概念進行描述；接著考慮狀態反饋控制規律，將閉環網絡控制系統描述為一個離散時間線性不確定系統模型，得到了該系統的漸近穩定性條件，且該條件建立了系統穩定性與兩個實驗參數,即允許時延上界（ADB）和允許時延變換范圍（ADVR），之間的定量關系。并且給出了穩定化反饋控制器的設計步驟。最后通過一個示例驗證了所提方法的有效性。
關鍵詞：網絡控制系統；時變時延；漸近穩定；不確定性；魯棒控制

 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