Least-squares sequential parameter and state estimation for large space structuresThis paper presents the formulation of simultaneous state and parameter estimation problems for flexible structures in terms of least-squares minimization problems. The approach combines an on-line order determination algorithm, with least-squares algorithms for finding estimates of modal approximation functions, modal amplitudes, and modal parameters. The approach combines previous results on separable nonlinear least squares estimation with a regression analysis formulation of the state estimation problem. The technique makes use of sequential Householder transformations. This allows for sequential accumulation of matrices required during the identification process. The technique is used to identify the modal prameters of a flexible beam.
Document ID
19830055861
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thau, F. E. (City Univ. of New York NY, United States)
Eliazov, T. (New York, City University New York, NY, United States)
Montgomery, R. C. (NASA Langley Research Center Hampton, VA, United States)