access icon free Robust reliable dissipative filtering for networked control systems with sensor failure

This study is concerned with the problem of robust reliable dissipative filter design for networked control systems (NCSs) with sensor failures and random packet dropouts. The considered NCS model is subject to the sources of uncertainty in the system parameters. The sensor signals are modelled by sequences of a Bernoulli distributed white sequence and the packet dropouts may occur randomly during transmission. The main objective is to design a suitable reliable dissipative filter such that, for all network-induced imperfections, a resulting error system is robustly stochastically stable and strictly (𝒬, 𝒮, ℛ) dissipative. The results are obtained for known as well as unknown sensor failure rates, so the results are more general one because it can guarantee the dissipativity of system whether or not the sensor encounter failures. The sufficient conditions for existence of filters are derived in terms of linear matrix inequality (LMI) approach and the corresponding filter parameters can be obtained by solution to a set of LMIs, which can be easily solved by using some standard numerical packages. Finally, two numerical examples are given to illustrate the applicability and effectiveness of the proposed filter design.

Inspec keywords: sensors; networked control systems; linear matrix inequalities; filtering theory; stability; failure analysis

Other keywords: NCS model; random packet dropouts; Bernoulli distributed white sequence; stochastic stability; sufflcient conditions; sensor signals; network-induced imperfections; linear matrix inequality; standard numerical packages; unknown sensor failure rates; LMI approach; system parameter uncertainty; networked control systems; error system; robust reliable dissipative filtering design

Subjects: Stability in control theory; Signal processing theory; Linear algebra (numerical analysis); Distributed parameter control systems

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-spr.2013.0441
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