1717 可変幾何パラメータを用いる自己システム同定の概念に基づく構造行列同定(J08-4 振動・騒音制御,適応構造,J08 知的材料・構造システム)  [in Japanese] 1717 Identification of Structural Matrices Based on A Concept of Self-Identification Using Variable Geometric Parameters  [in Japanese]

This paper proposes a method for the identification of structural matrices using a concept of self-identification with variable geometric parameters. The method is theoretically formulated by using the change of eigenvalues and eigenvectors according to change of the variable geometric vector. A modal expansion technique is introduced to obtain the eigenvectors under the lack of sensors. Numerical examples show that the stiffness matrix of a two-dimensional variable geometry truss is exactly identified with enough number of the linearly independent eigenvectors changed by one variable length member of the truss.