Design of a Functional H Filter for Linear Singular Systems With an Additional Unknown Input, Bounded Disturbance, and Variable Time Delay

Design of a Functional H Filter for Linear Singular Systems With an Additional Unknown Input, Bounded Disturbance, and Variable Time Delay

Hamzaoui Fatma, Khadhraoui Malek, Messaoud Hassani
Copyright: © 2020 |Pages: 31
DOI: 10.4018/IJSDA.2020100102
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Abstract

This paper deals with a new method for the design of a functional filter for linear singular systems with bounded disturbance and variable time delay in the state and the known input vectors. Moreover, a disturbance unknown inputs is considered. The main objective of such design is the estimation of functional state vector, and a part of the disturbance unknown inputs for fault detection. The proposed design is based on Lyapunov-Krasovskii stability theory and, in order to minimize the disturbance effect, the designed filter satisfies a H_∞ criterion. Numerical simulation is used to illustrate the proposed design and the results were successful.
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3. Problem Formulation

Consider the following continuous-time linear singular delayed system described by:

IJSDA.2020100102.m04
(1a)
IJSDA.2020100102.m05
(1b) where IJSDA.2020100102.m06, IJSDA.2020100102.m07 and IJSDA.2020100102.m08 are the state, the known input and the output vectors respectively. IJSDA.2020100102.m09 and IJSDA.2020100102.m10 summarises respectively all the components of the unknown input and of the bounded disturbances that act on dynamic and output. IJSDA.2020100102.m11 and IJSDA.2020100102.m12 are known matrices of appropriate dimensions.

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