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- Title
Design of finite dimensional robust H<sub> ∞ </sub> distributed consensus filters for dissipative PDE systems with sensor networks.
- Authors
Wang, Hong‐Du; Wu, Huai‐Ning
- Abstract
This paper presents a design method of finite dimensional robust H ∞ distributed consensus filters (DCFs) for a class of dissipative nonlinear partial differential equation (PDE) systems with a sensor network, for which the eigenvalue spectrum of the spatial differential operator can be partitioned into a finite dimensional slow one and an infinite dimensional stable fast complement. Initially, the modal decomposition technique is applied to the PDE system to derive a finite dimensional ordinary differential equation system that accurately describes the dynamics of the dominant (slow) modes of the PDE system. Then, based on the slow subsystem, a set of finite dimensional robust H ∞ DCFs are developed to enforce the consensus of the slow mode estimates and state estimates of all local filters for all admissible nonlinear dynamics and observation spillover, while attenuating the effect of external disturbances. The Luenberger and consensus gains of the proposed DCFs can be obtained by solving a set of linear matrix inequalities (LMIs). Furthermore, by the existing LMI optimization technique, a suboptimal design of robust H ∞ DCFs is proposed in the sense of minimizing the attenuation level. Finally, the effectiveness of the proposed DCFs is demonstrated on the state estimation of one dimensional Kuramoto-Sivashinsky equation system with a sensor network. Copyright © 2014 John Wiley & Sons, Ltd.
- Subjects
FILTERS &; filtration; NUMERICAL solutions to differential equations; EIGENVALUE equations; FINITE element method; SENSOR networks management; MATHEMATICAL models
- Publication
International Journal of Robust & Nonlinear Control, 2015, Vol 25, Issue 10, p1454
- ISSN
1049-8923
- Publication type
Article
- DOI
10.1002/rnc.3151