Closed-loop design of fault detection for networked non-linear systems with mixed delays and packet losses
- Author(s): Jian Feng 1 ; Shenquan Wang 1 ; Qing Zhao 2
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View affiliations
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Affiliations:
1:
School of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, People's Republic of China;
2: Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G2V4, Canada
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Affiliations:
1:
School of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, People's Republic of China;
- Source:
Volume 7, Issue 6,
11 April 2013,
p.
858 – 868
DOI: 10.1049/iet-cta.2012.0987 , Print ISSN 1751-8644, Online ISSN 1751-8652
This study is concerned with the problem of fault detection (FD) for networked control systems with discrete and infinite distributed delays subject to random packet losses and non-linear perturbation. Both sensor-to-controller and controller-to-actuator packet losses are modelled as two different mutually independent Bernoulli distributed white sequences with known conditional probability distributions. By utilising an observer-based fault detection filter (FDF) as a residual generator, the FD for networked non-linear systems with mixed delays and packet losses is formulated as an H ∞ model-matching problem. Attention is focused on designing the FDF in the closed-loop system setup such that the estimation error between the residuals and filtered faults is made as small as possible and at the same time the closed-loop networked non-linear system is exponentially stable in the mean-square sense. To show the superiority and effectiveness of this work, two numerical examples are presented.
Inspec keywords: discrete systems; delays; control system synthesis; networked control systems; perturbation techniques; statistical distributions; fault diagnosis; asymptotic stability; closed loop systems; nonlinear control systems
Other keywords: closed-loop design; H∞ model-matching problem; H∞ model-matching problem; nonlinear perturbation; conditional probability distributions; infinite distributed delays; controller-to-actuator packet loss; observer-based fault detection filter; mean-square sense; networked nonlinear systems; discrete delays; networked control systems; exponential stability; Bernoulli distributed white sequences; FDF; residual generator; random packet loss; sensor-to-controller packet loss; mixed delays
Subjects: Distributed parameter control systems; Control system analysis and synthesis methods; Stability in control theory; Nonlinear control systems; Discrete control systems; Other topics in statistics
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