Centralized fusion estimation over wireless sensor-actuator networks with unobservable packet dropouts

This paper studies centralized fusion estimation over a wireless sensor-actuator network, where packet dropouts cannot be observed by the fusion estimator. For such a system, we obtain an optimal linear fused estimation of system states, also known as optimal linear estimator. Then, we establish a n...

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Bibliographic Details
Published in:Journal of the Franklin Institute 2022-01, Vol.359 (2), p.1569-1584
Main Authors: Lin, Hong, Lu, Shan, Lu, Peng, Que, Haoyi, Sun, Pei
Format: Article
Language:English
Subjects:
Actuators
Asymptotic methods
Dropouts
Estimating techniques
Linear programming
Sensors
Wireless networks
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Summary:This paper studies centralized fusion estimation over a wireless sensor-actuator network, where packet dropouts cannot be observed by the fusion estimator. For such a system, we obtain an optimal linear fused estimation of system states, also known as optimal linear estimator. Then, we establish a necessary and sufficient condition for the stability of the optimal linear estimator. Finally, we show that the estimation performance is monotonically decreasing with respect to the observation packet-arrival rate. By analyzing a sequence that converges to the covariance of the optimal linear estimator, an analytical relationship between the estimation performance and the control packet-arrival rate is obtained. Simulation examples are given to illustrate the main results.
ISSN:0016-0032
1879-2693
0016-0032
DOI:10.1016/j.jfranklin.2021.11.002