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浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (7): 1418-1422    DOI: 10.3785/j.issn.1008-973X.2010.07.033
自动化技术     
测量值量化的时滞系统的输出反馈控制
王俊宏, 薛安克
杭州电子科技大学 自动化学院,浙江 杭州 310018
Output feedback control for timedelay system with
quantized measurement
WANG Jun-hong, XUE Anke
School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China
 全文: PDF 
摘要：

为了解决无线网络带宽限制的问题,信号在传输之前需要进行量化,但是量化器的引入会给信号带来一定的误差.针对时滞系统,研究测量值量化的基于观测器的输出反馈控制问题.考虑对数量化器,为了研究量化器对系统的影响,引入上行界的方法,将对数量化问题转化成鲁棒不确定问题.为了讨论系统的收敛速度,采用带有衰减系数的Lyapunov函数,得到了闭环系统的指数衰减率.采用线性矩阵不等式(LMI)的方法给出了系统满足指数稳定的充分条件以及控制器和观测器增益的表达式.应用数值仿真证明了本文算法的有效性.
关键词：  ;  时滞系统;  对数量化器;  指数稳定;  输出反馈控制    
Abstract:

The signal must be quantized before transmission in order to solve the problem of the capacity constraint in network control system, but the quantization will bring error to the signal. The observerbased output feedback control with quantized measurement was conducted aimed at the timedelay system. The logarithmic quantizer was considered. The sector bound method was introduced to analyze the influence of the quantizer on the system. Then the logarithmic quantizer problem was transformed into the robust problem. The Lyapunov function with decay parameter was adopted to analyze the system convergence rate, and the exponential decay rate of closedloop system was obtained. The sufficient condition of exponential stability was given based on the linear matrix inequality (LMI) approach, and the gains of controller and observer were derived. Numerical results illustrated that the approach is effective and feasible.
Key words: time-delay system    logarithmic quantizer    exponential stability    output feedback control
出版日期: 2010-07-22
:  TP 13  
基金资助:

国家“973”重点基础研究发展规划资助项目（2009CB320602）；浙江省教育厅基金资助项目(Y200805997).
作者简介: 王俊宏(1976—), 男，浙江东阳人，讲师，从事鲁棒控制的研究.E-mail：junhongwang@hdu.edu.cn
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引用本文:

王俊宏, 薛安克. 测量值量化的时滞系统的输出反馈控制[J]. J4, 2010, 44(7): 1418-1422.

WANG Dun-Hong, XUE An-Ke. Output feedback control for timedelay system with
quantized measurement. J4, 2010, 44(7): 1418-1422.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2010.07.033    或    http://www.zjujournals.com/xueshu/eng/CN/Y2010/V44/I7/1418

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