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http://dx.doi.org/10.5302/J.ICROS.2011.17.10.960

ℋ_/ℋ∞ Fault Detection and Isolation for Discrete-Time Delayed Systems  

Jee, Sung-Chul (School of Electronic Engineering, Inha University)
Lee, Ho-Jae (School of Electronic Engineering, Inha University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.17, no.10, 2011 , pp. 960-966 More about this Journal
Abstract
In this paper, an $\mathfrak{H}$_/$\mathfrak{H}_{\infty}$ fault detection and isolation (FDI) observer design problem is investigated for discrete-time delayed systems. To that end, a bank consisting of the sensor's number of observers is introduced. Each residual should be sensitive to a certain partial group of faults, but robust against the disturbance as far as possible. We formulate this multiobjective FDI problem as $\mathfrak{H}$_/$\mathfrak{H}_{\infty}$ observers design problem. Sufficient design condition is expressed as iterative linear matrix inequalities. The fault is then detected and isolated by evaluating the residuals through an FDI decision logic. A computer simulation is provided for verification of the proposed technique.
Keywords
delayed system; fault detection and isolation (FDI); observer; $\mathfrak{H}$_/$\mathfrak{H}_{\infty}$ performance;
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Times Cited By KSCI : 2  (Citation Analysis)
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