K-0306 ウェーブレット変換を用いた衝撃力の逆問題解析(S01-2 ウェーヴレットの最新応用(2))(S01 ウェーヴレットの最新応用)

Abstract

A method of inverse analysis for indirect measurement of impact force is studied. The relationship between the impact force and response of a body is modeled by linear convolution. The impact force can be estimated by deconvolving the impulse response function from the measured response. The impact force is decomposed by the wavelet transform using Gabor wavelet in order to apply regularization using the singular value decomposition to each time-frequency component. It is found that the regularization parameter can be optimized by minimizing the norm of the residual of algebraic equation in terms of the wavelet coefficients of the impact force.