Regularization of Numerical Inversion of the Laplace Transform for the Inverse Analysis of Impact Force
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概要
- 論文の詳細を見る
This paper is concerned with the inverse problem of impact force, which is to estimate the impact forces acting on bodies from the measurement of their impact responses. As the authors have shown previously, both numerical Laplace transformation and its inversion are required to solve the inverse problem. Since the inverse analysis is based on experimental data and, in addition, the Laplace inversion is typical of ill-posed problems, straightforward computation tends to provide an unacceptable estimate of the true impact force. Therefore, regularization of the Laplace inversion is necessary to obtain a good estimate of the impact force. In this paper Tikhonov regularization is applied to the numerical Laplace inversion using FFT. Both numerical simulation and experimental results verify that the Tikhonov regularization is effective for improving the accuracy of the estimated impact force. In addition, it is shown that Hansen's L-curve method can be employed to determine appropriately the regularization parameter.
- 一般社団法人日本機械学会の論文
- 1998-10-15
著者
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KISHIMOTO Kikuo
Department of Mechanical and Control Engineering, Tokyo Institute of Technology
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Kishimoto Kikuo
Department Of Mechanical And Control Engineering Tokyo Institute Of Technology
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INOUE Hirotsugu
Department of Mehanical and Control Engineering, Tokyo Institute of Technology
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Shibuya T
Department Of Mechanical And Intelligent Systems Engineering Tokyo Institute Of Technology
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Shibuya T
National Inst. Multimedia Education Chiba Jpn
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SHIBUYA Toshikazu
Department of Mechanical and Intelligent Systems Eng., Tokyo Institute of Technology
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HARADA Kenjirou
Ishikawajima-Harima Heavy Industries Co., Ltd., Former graduate student, Tokyo Institute of Technolo
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Inoue Hirotsugu
Department Of Mechanical And Intelligent Systems Engineering Tokyo Institute Of Technology
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Harada Kenjirou
Ishikawajima-harima Heavy Industries Co. Ltd. Former Graduate Student Tokyo Institute Of Technology
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Shibuya Toshikazu
Department Of Engineering Tokyo Institute Of Technology
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INOUE Hirotsugu
Department of Mechanical and Control Engineering, Tokyo Institute of Technology
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