淡江大學機構典藏:Item 987654321/122359
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    题名: Contact force analysis on two-fingered robot grasping
    作者: Jiun-Ru Chen;Wei-En Chen;Chao-Hwa Liu;Yin-Tien Wang;Ching-Bin Lin;Guan-Chen Chen
    关键词: Contact force analysis;inverse kinetics;tightening displacement;Coulomb’s law of friction;mechanics of manipulators
    日期: 2021-06
    上传时间: 2022-03-04 12:12:59 (UTC+8)
    摘要: A procedure for inverse kinetic analysis on two hard fingers grasping a hard sphere is proposed in this study. Contact forces may be found for given linear and angular accelerations of a spherical body. Elastic force-displacement relations predicted by Hertz contact theory are used to remove the indeterminancy produced by rigid body modelling. Two types of inverse kinetic analysis may be dealt with. Firstly, as the fingers impose a given tightening displacement on the body, and carry it to move with known accelerations, corresponding grasping forces may be determined by a numerical procedure. In this procedure one contact force may be chosen as the principal unknown, and all other contact forces are expressed in terms of this force. The numerical procedure is hence very efficient since it deals with a problem with only one unknown. The solution procedure eliminates slipping thus only nonslip solutions, if they exist, are found.

    Secondly, when the body is moving with known accelerations, if the grasping direction of the two fingers is also known, then the minimum tightening displacement required for non-sliding grasping may be obtained in closed form. In short, the proposed technique deals with a grasping system that has accelerations, and in this study the authors show that indeterminancy may be used to reduce the complexity of the problem.
    關聯: Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 235(2), p.260-270
    DOI: 10.1177/1464419320964022
    显示于类别:[機械與機電工程學系暨研究所] 期刊論文

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