Fault class isolation in linear systems with unknown inputs

Document Type

Conference Proceeding

Publication Date

9-30-2008

Publication Title

Proceedings of the American Control Conference

First Page

1600

Last Page

1605

Abstract

In fault isolation, it is often necessary to first make a decision on which class of fault has occurred. Such a decision requires isolating the occurred fault class amongst different possible fault classes. We shall refer to this problem as Fault Class Isolation (FCI), and this problem is the subject of this paper. In order to address the FCI problem, a general methodology is proposed. As an application of the methodology, FCI schemes using unknown input observers are designed to achieve the isolation between actuator and sensor class of faults for certain linear systems with unknown inputs. The results demonstrate that the FCI between actuator and sensor class of faults can be achieved under certain conditions. Examples are provided to show the effectiveness of the proposed FCI schemes. ©2008 AACC.

DOI

10.1109/ACC.2008.4586720

ISSN

07431619

ISBN

9781424420797

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