Quantised output feedback control via limited capacity communication networks |
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Authors: | Qing-Quan Liu Fang Jin |
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Affiliation: | 1. School of Information Science and Engineering , Shenyang Ligong University , Shenyang , China lqqneu@163.com;3. School of Information Science and Engineering , Shenyang Ligong University , Shenyang , China |
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Abstract: | This article addresses the output feedback stability problem for single-input single-output (SISO) linear systems with quantised measurements of the plant output, where sensors and controllers are connected via errorless digital channels carrying a finite number of bits per unit time. The main idea here is to present a lower bound of data rates, above which there exists a quantisation, coding and control scheme to guarantee both stability and a prescribed control performance of the unstable plant. A quantisation and coding scheme, which is based on the distribution of measurements and the dynamics of the plant, is proposed. The proof techniques rely on both information-theoretic and control-theoretic tools. An illustrative example is given to demonstrate the effectiveness of the proposed scheme. |
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Keywords: | single-input single-output (SISO) linear systems output feedback control control under communication constraints feedback stability |
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