A Scalable Algorithm for Event-Triggered State Estimation With Unknown Parameters and Switching Topologies Over Sensor Networks

An event-triggered distributed state estimation problem is investigated for a class of discrete-time nonlinear stochastic systems with unknown parameters over sensor networks (SNs) subject to switched topologies. An event-triggered communication strategy is employed to govern the information broadca...

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Vydáno v:IEEE transactions on cybernetics Ročník 50; číslo 9; s. 4087 - 4097
Hlavní autoři: Ding, Derui, Wang, Zidong, Han, Qing-Long
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States IEEE 01.09.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Computer simulation
Discrete time systems
Distributed estimation
Dwell time
Estimation error
Network topologies
Network topology
nonlinear stochastic systems
Nonlinear systems
Parameter estimation
Parameter identification
sensor networks (SNs)
Stability criteria
State estimation
Stochastic systems
Switches
switching topologies
Topology
unknown parameters
ISSN:2168-2267, 2168-2275, 2168-2275
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Shrnutí:An event-triggered distributed state estimation problem is investigated for a class of discrete-time nonlinear stochastic systems with unknown parameters over sensor networks (SNs) subject to switched topologies. An event-triggered communication strategy is employed to govern the information broadcast and reduce the unnecessary resource consumption. Based on the adopted communication strategy, a distributed state estimator is designed to estimate the plant states and also identify the unknown parameters. In the framework of input-to-state stability, sufficient conditions with an average dwell time are established to ensure the boundedness of estimation errors in mean-square sense. In addition, the gains of the designed estimators are dependent on the solution of a set of matrix inequalities whose dimensions are unrelated to the scale of underlying SNs, thereby fulfill the scalability requirement. Finally, an illustrative simulation is utilized to verify the feasibility of the proposed design scheme.
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ISSN:2168-2267
2168-2275
2168-2275
DOI:10.1109/TCYB.2019.2917543