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Structural conditions of two types of 3-DOF parallel mechanisms with zero-torsion characteristics

  • Jiexin Zou
  • , Jingjun Yu*
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The tilt-and-torsion angles are used for representations of the orientation workspace of parallel mechanisms (PMs). For the zero-torsion PMs, it needs only two angles to represent the orientation workspace. However, there are few studies about the structural conditions of zero-torsion PMs. This paper deals with the derivation of structural conditions of two types of three-degree-of-freedom (3-DOF) parallel mechanisms with zero-torsion characteristics. The PMs include a class of 3- [PP]S PMs and the 3-RSR one, both of which have been widely used as the orientational stages. The structural conditions of these PMs that satisfies zero-torsion characteristics have been derived from a conventional kinematics-based approach. The results indicates that the zero-torsion 3-[PP]S PMs have at least the characteristic of z-axial symmetry, while the zero-torsion 3-RSR PM should be mirror-symmetrical in structure.

Original languageEnglish
Title of host publicationMechanism and Machine Science - Proceedings of ASIAN MMS 2016 and CCMMS 2016
EditorsXianmin Zhang, Yanjiang Huang, Nianfeng Wang
PublisherSpringer Verlag
Pages925-935
Number of pages11
ISBN (Print)9789811028748
DOIs
StatePublished - 2017
Event4th IFToMM Asian Conference on Mechanism and Machine Science, ASIAN MMS 2016 and International Conference on Mechanism and Machine Science of China, CCMMS 2016 - Guangzhou, China
Duration: 15 Dec 201617 Dec 2016

Publication series

NameLecture Notes in Electrical Engineering
Volume408
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference4th IFToMM Asian Conference on Mechanism and Machine Science, ASIAN MMS 2016 and International Conference on Mechanism and Machine Science of China, CCMMS 2016
Country/TerritoryChina
CityGuangzhou
Period15/12/1617/12/16

Keywords

  • Parallel mechanism
  • Symmetry
  • Zero torsion

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