Open AccessClosed‐loop design of fault detection for networked non‐linear systems with mixed delays and packet losses
Author(s) -
Feng Jian,
Wang Shenquan,
Zhao Qing
Publication year - 2013
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2012.0987
Subject(s) - control theory (sociology) , network packet , computer science , fault detection and isolation , closed loop , loop (graph theory) , fault (geology) , control engineering , engineering , actuator , mathematics , control (management) , computer network , artificial intelligence , combinatorics , seismology , geology
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.