機械・構造物に作用する外力の同定に関する研究 : 分布力を未知数とする同定手法の提案(機械力学,計測,自動制御)

概要

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The identification of external force acting on a machine or a structure is important for the diagnosis. One of the force identification methods is based on the frequency response function. The method is very useful although it requires the information of location of force acting. In this study, an identification method is proposed for the case of unknown excitation points. In the method, the distributed force is approximately expressed by using some unknown variables, thus this method can be applied for the case of widely distributed force and concentrated force. And the final identification result is determined through the check of the objective function for various singular values. The validity of the method was shown by the numerical example and its feasibility was also shown by an experimental result.
2010-03-25