日本機械学会論文集 C編
Online ISSN : 1884-8354
Print ISSN : 0387-5024
任意境界を持つ弾性体の拡張低次元化物理モデル設計法
第2報, 2リンク柔軟ロボットアームの運動と振動の制御
安藝 雅彦渡辺 亨背戸 一登田島 洋
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2007 年 73 巻 736 号 p. 3171-3178

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This paper deals with the effectiveness of an Extended Reduced-Order Physical Model (Extended Model) with arbitrary boundary condition for motion and vibration control system design. The Extended Model is proposed to apply to the simultaneous motion and vibration control of elastic structures. The Extended Model consists of some rigid bodies which are called as rigid body elements and stiffness elements. To design rigid body elements, four dynamical conditions are used (1) Total mass and Total moments of inertia, (2) Position of center of gravity, (3) Modal mass and Orthogonality, (4) Modal momentum and Modal angular momentum. The (1) - (4) values of a modeling object are needed to identify masses and moments of inertia of rigid body elements. In the case of that an elastic body has general boundary conditions, the Modal momentum and the Modal angular momentum are not zero and needed to be identified by any means. However, it is not always easy to identify these values. Therefore, a novel formulation to identify mass and inertia matrices is presented that utilizes dynamical conditions for the original object. subjected to free boundary conditions. The presented formulation is applied to the modeling of the two-link flexible robot arm. Each flexible link is modeled by using the proposed modeling method. The two-link flexible robot arm is built by combining two independently identified link models. The effectiveness of “an Extended Model with an arbitrary boundary condition” is shown through the simulation and experimental control results.

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