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Abstract
Operational modal analysis from impulse response data can alternatively be viewed as an identification of a stable autonomous linear timeinvariant system. For example, earthquake response data of civil engineering structures and impulsive excitation of bridges leads to this problem. Identification from a single experiment, however, does not yield a consistent estimator in the output error setting due to the exponential decay of the noisefree signal. Using data from multiple experiments, on the other hand, is not straightforward because of the need to match the initial conditions in the repeated experiments. Consequently, we consider the identification from arbitrary initial conditions and show that consistent estimation is possible in this case. The computational method proposed in the paper is based on analytic elimination of the initial conditions (nuisance parameter) and local optimization over the remaining (model) parameters. It is implemented in a ready to use software package, available from http://slra.github.io/software.html
Original language  English 

Title of host publication  Proceedings of the ISMA2014 International Conference on Noise and Vibration Engineering, Leuven (Belgium), Sept. 1517, 2014 
Pages  32653268 
Number of pages  4 
ISBN (Electronic)  9789073802919 
Publication status  Published  15 Sep 2014 
Event  ISMA 2014  Leuven, Belgium Duration: 15 Sep 2014 → … 
Conference
Conference  ISMA 2014 

Country  Belgium 
City  Leuven 
Period  15/09/14 → … 
Keywords
 linear timeinvariant systems
 system identification
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 1 Finished

DWTC282: Dynamical systems, control and optimization
Pintelon, R., Vandewalle, J., Aeyels, D., Sepulchre, R., Kinnaert, M., Vande Wouwer, A., Blondel, V., Winkin, J., Boyd, S. & Leonard, N.
1/04/12 → 30/09/17
Project: Fundamental