|Event-based Distributed Filtering Approach to Nonlinear Stochastic Systems over Sensor Networks
Zhongrui Hu*, Peng Shi, Ligang Wu, and Choon Ki Ahn
International Journal of Control, Automation, and Systems, vol. 17, no. 4, pp.896-906, 2019
Abstract : "In this paper, an event-triggered communication strategy and a distributed filtering scheme are designed
for discrete-time nonlinear stochastic systems over wireless sensor networks (WSNs). The underlying system is
represented by the Takagi-Sugeno (T-S) fuzzy model, and in addition by the description of the WSN under consideration.
The structure of the WSN is established on a deterministic one. Based on an event-triggering condition
tailored for each sensor, distributed fuzzy filters are established using the triggered measurements of the smart
sensors. As a result, an augmented stochastic system is presented for the distributed filtering design. A robust
mean-square asymptotic stability criterion is explored using the Lyapunov stability theory and the Disk stability
constraint is applied to improve the performance of the distributed filters. An optimization solution to obtaining the
parameters of the distributed filters is developed. Subsequently, a computer-simulated example helps to illustrate
the validity of the proposed new filtering design techniques."
Distributed filtering, event-triggered control, fuzzy systems, sensor networks.