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Static stiffness analysis and simulation of 6-PTRT parallel robot

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

Abstract

To reveal the static stiffness behavior of a 6-PTRT parallel robot and find out its change rule in order to provide the reasonable parameters for the structural design, the stiffness characteristics of this parallel mechanism was studied. Based on the influence coefficient method, a static stiffness model for 6-PTRT parallel robot was established. The proposed model considered not only the axis stiffness of actuator but also the stiffness of passive joints, and the change of Jacobian matrix and first-order influence coefficient brought about by tiny change of the parallel robot mechanism's configuration under external wrench. The static stiffness matrix of parallel robot in initial position and its stiffness distribution rules for a certain workspace were given by numerical calculation and finite element method, which comparatively verify the exactness of stiffness model.

Original languageEnglish
Title of host publication2013 International Conference on Machinery, Materials Science and Energy Engineering
Pages33-38
Number of pages6
DOIs
StatePublished - 2013
Event2013 International Conference on Machinery, Materials Science and Energy Engineering, ICMMSEE 2013 - Jingzhou, Hubei, China
Duration: 18 May 201319 May 2013

Publication series

NameApplied Mechanics and Materials
Volume318
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 International Conference on Machinery, Materials Science and Energy Engineering, ICMMSEE 2013
Country/TerritoryChina
CityJingzhou, Hubei
Period18/05/1319/05/13

Keywords

  • 6-PTRT parallel robot
  • Influence coefficient
  • Jacobian matrix
  • Static stiffness

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