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网络化控制系统离散二次型最优控制综合设计
引用本文:牛云,吴旭光,康军,洪亮. 网络化控制系统离散二次型最优控制综合设计[J]. 西北工业大学学报, 2012, 30(2): 227-233
作者姓名:牛云  吴旭光  康军  洪亮
作者单位:1. 西北工业大学航海学院
2. 长安大学电子工程学院,陕西西安,710064
3. 西北工业大学自动化学院,陕西西安,710072
基金项目:国家自然科学基金,陕西省自然科学基金
摘    要:基于网络QoS如延迟、丢包建立网络化控制系统状态方程,提出一种根据网络QoS离散化连续系统二次型代价函数及设计相应最优LQR(Linear Quadratic Regulator)控制器的方法。针对系统控制性能对网络QoS的约束,提出一种能够兼顾系统性能与网络QoS的控制与调度综合协调设计方法。仿真实验证明了提出的网络化控制离散二次型最优综合设计方法的必要性和与已有的二次型最优控制方法相比的优势。

关 键 词:网络化控制系统  离散二次型最优控制  网络QoS  综合协调设计

An Effective Integrated Design Method of Discrete Linear Quadratic Regulator and Bandwidth Scheduling of Networked Control System
Niu Yun , Wu Xu guang , Kang Jun , Hong Liang. An Effective Integrated Design Method of Discrete Linear Quadratic Regulator and Bandwidth Scheduling of Networked Control System[J]. Journal of Northwestern Polytechnical University, 2012, 30(2): 227-233
Authors:Niu Yun    Wu Xu guang    Kang Jun    Hong Liang
Affiliation:1.College of Marine Engineering,Northwestern Polytechnical University,Xi′an 710072,China 2.Department of Automatic Control,Northwestern Polytechnical University,Xi′an 710072,China 3.School of Information Engineering,Chang’an University,Xi′an 710064,China)
Abstract:Sections 1 through 3 of the full paper explain the integrated design method mentioned in the title,which we believe is new and more effective than previous ones.Their core consists of:(1) we discretize the continuous control model with the network qualities of service(QoS) such as network-induced delay and packet dropout;(2) we discretize the continuous quadratic cost function,which takes network QoS into account,and then design a discrete linear quadratic regulator;(3) we propose an integrated design method for scheduling the bandwidth of networked control system,which considers both the quality of performance and the QoS.Section 4 simulates our integrated design method;the simulation results,given in Figs.1 through 5 and Tables 1 and 2,and their analysis show preliminarily that the integrated design method is indeed more effective than previous ones.
Keywords:algorithms,analysis,bandwidth,calculations,closed loop control systems,delay,design,dynamic response,feedback,functions,integration,models,optimization,quality of service,real time systems,scheduling,simulation,time varying systems  networked control system,discrete linear quadratic regulator
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