Output feedback control for time-delay system with quantized measurement

被引：1
|
作者：
Wang J.-H. [1 ]
Xue A.-K. [1 ]
机构：
[1] School of Automation, Hangzhou Dianzi University
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2010年 / 44卷 / 07期
关键词：
Exponential stability; Logarithmic quantizer; Output feedback control; Time-delay system;
D O I：
10.3785/j.issn.1008-973X.2010.07.033
中图分类号：
学科分类号：
摘要：
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.
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页码：1418 / 1422
页数：4
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