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Dynamic event-triggered distributed observer for linear systems
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DOI：10.1016/j.isatra.2023.01.012.png)
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Abstract
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This paper investigates a dynamic event-triggered distributed observer for linear systems including two groups of local observers: one can access the local outputs and another cannot. By the detectability decomposition, the proposed observer contains a detectable sub-state (DSS) observer and a distributed undetectable sub-state (USS) observer. The dynamic event-triggered mechanism (DETM) for the outputs only requires a copy of the DSS observer with low dimension. Besides, only the USS estimate is transmitted to the neighbors which can reduce the communication burden. Positive minimum inter -event times are prescribed previously in the DETMs, and piece-wise dynamics for internal dynamic variables are employed. By modeling the error systems as hybrid systems, the exponential stability of the proposed observer is assured with the utilization of time-triggering method and event-triggering method.(c) 2023 ISA. Published by Elsevier Ltd. All rights reserved.
Keywords:
Distributed observer
Dynamic event -triggering mechanism
Linear systems
Hybrid systems
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6.5
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