可変行列同定法による適応構造物における自己システム同定の同定可能性と同定限界

Abstract

The variable matrices method is proposed for self-identification of adaptive structures with variable physical parameters. The method applies the relation between the variation of vibration characteristics of the structures and variable physical parameters instead of their input-output relation. Numerical examples for self-identification with one-dimensional models indicate that the self-identification by variable stiffness and requested mode eigenvectors is realized within 1% errors. Also, the condition number of coefficient matrices of linear equations is introduced to examine the identification errors. Moreover, the numerical results show that the identification errors depend on the combination between the number of modes and the location of the variable stiffness devices. Finally, the results point out the significance of the changing range of the variable stiffness to realize accurate identification.