具有通信序列的网络控制系统LQG控制器设计  

LQG Controller Design for Networked Control Systems with Communication Sequences

作　　者：窦立谦[1] 宗群[1] 孙连坤[2] 吉月辉[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]天津工业大学计算机科学与软件学院,天津300160

出　　处：《控制工程》2011年第3期448-452,457,共6页Control Engineering of China

基　　金：国家自然科学基金(60874073);天津市面上项目(08JCYBJC11900);天津市支撑课题(08ZCKFJC27900);天津市科技计划项目(08ZCKFGX02900)

摘　　要：研究了具有通信序列的网络控制系统控制器设计问题。通过在系统的输入输出端设计通信序列,分时占用网络,以降低带宽约束对系统的影响,进而构建了具有通信序列的网络控制系统模型;在此基础上,将网络控制器设计分为2个部分,首先,基于输出值设计Kalm an滤波器,用于提供最优状态估计值;然后,在考虑通信序列的基础上利用LQG方法协同设计系统了的最优控制器,最后,用一个仿真示例验证了该方法的有效性。The controller design for networked control systems （NCSs） with communication sequences is proposed. The communication sequences which make the input and output available in a time-sharing mode is proposed to reduce the effect of bandwidth constraint. Then system model of NCSs with communication sequences is built. Based on this, controller design procedure is divided into two parts ： the first part is to design Kalman filter for giving optimal state estimated value, the other is to design LQG controller by considering network communication sequence. At last, a numerical example is given to verify the effectiveness of the method presented in this paper.

关 键 词：网络控制系统 通信序列 LQG 控制器设计 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]