The Adjustment of Structural Parameters using a Minimum Variance Estimator
MI Friswell (Aston University)
Mechanical Systems and Signal Processing, Vol. 3, No. 2, April 1989, pp. 143-155
This paper presents a method of adjusting the parameters of the mathematical model of a mechanical structure using test data. The algorithm is based on a minimum variance estimator for the unknown mass and stiffnes parameters, using natural frequency and mode shape information. Previous authors using this method have assumed the estimated parameters and measurements to be independent. This paper makes no such assumption. The algorithm produced converges faster to more correct result than the previous statistical algorithms.
This material has been published in the Mechanical Systems and Signal Processing, Vol. 3, No. 2, April 1989, pp. 143-155, the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by Academic Press. This material may not be copied or reposted without explicit permission.
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Link to paper using doi:10.1016/0888-3270(89)90013-7
Mechanical Systems and Signal Processing on ScienceDirect