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Robust detection of changes with application to structural systems

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1 Author(s)
Popescu, T.D. ; Res. Inst. for Inf., Bucharest, Romania

The objective of this paper is to present some fault detection/diagnosis schemes, known for their robustness concerning the system undermodelling and variations in experimental conditions. The first approach, in frequency domain, is based on the results of high-order black-box identification theory, and the second makes use of an impulse invariant transformation to obtain the equivalent system having as input a stationary uncorrelated sequence, and as output the corresponding response; this last approach reduces the problem of change detection in systems to one of change detection in signals. These approaches were applied for the analysis of the dynamic behaviour of a vibrating structure, a multistory concrete building, subject to a transient natural excitation

Published in:
Computer-Aided Control System Design, 1996., Proceedings of the 1996 IEEE International Symposium on

Date of Conference: 15-18 Sep 1996

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