622 人間・機械振動系のパラメータ推定 : ランダム加振とスイープ加振の比較(ヒューマンモデリング,OS-7 ヒューマンダイナミクス,総合テーマ「伝統を,未来へ!」)

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This study discusses the relationship between excitation methods and the parameter estimation of a human-mechanical vibration system. One-degrees-of-freedom platform on which a human stands is considered, and the human body and the platform are modeled as a linear two- degrees-of-freedom (2DOF) vibration system. The mass, the viscosity, and the stiffness parameters of human body are identified by the least squares method of the experimental frequency response. Two cases of excitations, the random and the swept sine excitations, are investigated, and the frequency responses are compared. Both cases are able to be modeled with 2DOF model with constant parameters. Furthermore, the influences of human's mental work loads are investigated experimentally, and the relationships between the loads and the variations of the identified parameters are discussed.
2010-09-14