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Lim, Wen Bin; Yang, Guilin; Yeo, Song Huat; Kurbanhusen, Mustafa Shabbir

A generic force-closure analysis algorithm for cable-driven parallel manipulators. (English) Zbl 1219.70010

Mech. Mach. Theory 46, No. 9, 1265-1275 (2011).
Summary: Cable-driven parallel manipulators (CDPMs) are a special class of parallel manipulators that are driven by cables instead of rigid links. Due to the unilateral driving property of cables, the cables in a CDPM must always maintain positive tension. In this paper, a methodology based on convex analysis is developed for the force-closure analysis of fully-constrained CDPMs. This method is systematic, easy to implement and satisfies both the necessary and sufficient conditions. The key point of this method is to define a critical vector that must be positively expressed by the tension vectors associated with the driving cables. The solution can be found by resolving a limited set of linear equations. Following the same approach, the method is also extended to generate the static workspace for under-constrained CDPMs. Therefore, this generic force-closure analysis can cater to the workspace analysis of both fully-constrained and under-constrained CDPMs. The computationally efficiency of the algorithm is verified through simulations.

Cited in 1 Document

MSC:

70B15 Kinematics of mechanisms and robots

Keywords:

workspace analysis; cable-driven parallel manipulator; force-closure analysis
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\textit{W. B. Lim} et al., Mech. Mach. Theory 46, No. 9, 1265--1275 (2011; Zbl 1219.70010)
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