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State Estimation of Networked Control Systems over Digital Communication Channels

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Abstract

This paper investigates the state estimation problem for linear time-invariant systems where sensors and controllers are connected by a stationary memoryless digital communication channel. Time delay, packet dropout, and data rate limitation occur simultaneously in such a channel. The problem of state estimation remains challenging for networked control systems due to time delay, packet dropout, and data rate limitation. Sufficient conditions for observability are provided in this case. Our result contains some existing results, and shows that there exists the inherent tradeoff between control and communication costs. Illustrative examples are given to demonstrate the effectiveness of the proposed scheme.

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ACKNOWLEDGMENTS

The authors also gratefully acknowledge the helpful comments and suggestions of the reviewers, which have improved the presentation.

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Authors and Affiliations

  1. College of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang, China

    Fang Jin & Yanju Liu

  2. College of Equipment Engineering, Shenyang Ligong University, Shenyang, China

    Xingrong Qin

  3. HaiXi Institutes, Chinese Academy of Science, Fuzhou, China

    Chunqiang Chen

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  1. Fang Jin
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  2. Xingrong Qin
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  3. Chunqiang Chen
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  4. Yanju Liu
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Correspondence to Yanju Liu.

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Fang Jin, Qin, X., Chen, C. et al. State Estimation of Networked Control Systems over Digital Communication Channels. Aut. Control Comp. Sci. 55, 148–154 (2021). https://doi.org/10.3103/S0146411621020073

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  • DOI: https://doi.org/10.3103/S0146411621020073

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