Structure Synthesis of a Class of 4-DoF and 5-DoF Parallel Manipulators with Identical Limb Structures

International Journal of Robotics Research - Tập 21 Số 9 - Trang 799-810 - 2002
Yuefa Fang1, Lung‐Wen Tsai2
1Department of Mechanical Engineering, Northern Jiaotong University, Beijing, 100044 PR China
2Department of Mechanical Engineering, Bourns College of Engineering, University of California, Riverside, CA 92521, USA

Tóm tắt

In this paper, a systematic approach is developed for the structural synthesis of a class of four-degrees-of-freedom (4-DoF) and 5-DoF overconstrained parallel manipulators with identical serial limbs. The theory of screws and reciprocal screws is employed for the analysis of the geometric conditions that must be met by the limbs of such parallel manipulators. Limb structures that can be used for constructing 4-DoF or 5-DoF parallel manipulators are enumerated according to the reciprocity of the twist and wrench systems. The assembly conditions of a parallel manipulator built by using identical C- or F-limbs are discussed. Several 4-DoF and 5-DoF parallel manipulators are sketched as examples.

Từ khóa


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