Title :
Robust detection of changes with application to structural systems
Author :
Popescu, Theodor D.
Author_Institution :
Res. Inst. for Inf., Bucharest, Romania
Abstract :
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
Keywords :
fault diagnosis; frequency-domain analysis; identification; dynamic behaviour; fault detection; fault diagnosis; frequency domain; high-order black-box identification theory; impulse invariant transformation; multistory concrete building; robust change detection; stationary uncorrelated sequence; structural systems; system undermodelling; transient natural excitation; vibrating structure; Buildings; Concrete; Context modeling; Fault detection; Fault diagnosis; Mathematical model; Monitoring; Robustness; Signal detection; Signal processing;
Conference_Titel :
Computer-Aided Control System Design, 1996., Proceedings of the 1996 IEEE International Symposium on
Conference_Location :
Dearborn, MI
Print_ISBN :
0-7803-3032-3
DOI :
10.1109/CACSD.1996.555243
