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Disturbance decoupled fault reconstruction using cascaded sliding mode observers

Ng, Kok, Tan, Chee Pin and Oetomo, Denny (2011) Disturbance decoupled fault reconstruction using cascaded sliding mode observers. Automatica, 48 (5). pp. 794-799. [Journal article]

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URL: http://dx.doi.org/10.1016/j.automatica.2012.02.005

DOI: 10.1016/j.automatica.2012.02.005

Abstract

This paper presents a disturbance decoupled fault reconstruction (DDFR) scheme using cascaded sliding mode observers (SMOs). The processed signals from a SMO are found to be the output of a fictitious system which treats the faults and disturbances as inputs; the ‘outputs’ are then fed into the next SMO. This process is repeated until the attainment of a fictitious system which satisfies the conditions that guarantee DDFR. It is found that this scheme is less restrictive and enables DDFR for a wider class of systems compared to previous work when only one or two SMOs were used. This paper also presents a systematic routine to check for the feasibility of the scheme and to calculate the required number of SMOs from the outset and also to design the DDFR scheme. A design example verifies its effectiveness.

Item Type:Journal article
Keywords:Disturbance rejection, Sliding mode, Observers,Fault diagnosis
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
ID Code:38279
Deposited By: Dr Mark Kok Ng
Deposited On:26 Jul 2017 15:55
Last Modified:20 Mar 2018 10:35

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