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In robotics the common normal of two non-intersecting joint axes is a line perpendicular to both axes.〔''Introduction to Robotics'' by Saeed Niku ISBN 0-470-60446-8 page 75〕 The common normal can be used to characterize robot arm links, by using the "common normal distance" and the angle between the link axes in a plane perpendicular to the common normal.〔''Robot manipulators: mathematics, programming, and control'' by Richard P. Paul 1981 ISBN 0-262-16082-X page 51〕 When two consecutive joint axes are parallel, the common normal is not unique and an arbitrary common normal may be used, usually one that passes through the center of a coordinate system.〔''Foundations of Robotics: Analysis and Control'' by Tsuneo Yoshikawa 1990 ISBN 0-262-24028-9 page 33〕 The common normal is widely used in the representation of the frames of reference for robot joints and links, and the selection of minimal representations with the Denavit–Hartenberg parameters. ==See also== * Denavit–Hartenberg parameters * Forward kinematics * Robotic arm 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Common normal (robotics)」の詳細全文を読む スポンサード リンク
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