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Error modeling and kinematic calibration of parallel robots

  • Harbin Engineering University

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

Abstract

In designing and controlling a parallel robot, accuracy is one of the most important factors to be considered. In order to improve the accuracy of parallel robots an effective method for the kinematical calibration is presented to enable the full set of geometric errors to be identified by measuring poses of the mobile platform. The calibration model between poses and geometrical parameters of a parallel robot is derived from the inverse kinematics solution, which indicates that the length errors of the 6 actuators and the position errors of the passive joints on the base and the mobile platform play an important role in accuracy reducing. The geometrical parameters of the parallel robot are measured and identified by three-dimension coordinate measuring machine and iterative least square method. Simulations and experiments for kinematic calibration are carried out with the parallel robot developed in Harbin Institute of Technology. And the results show that the method can improve the accuracy of parallel Robots.

Original languageEnglish
Title of host publicationChinese Control and Decision Conference, 2008, CCDC 2008
Pages2162-2167
Number of pages6
DOIs
StatePublished - 2008
EventChinese Control and Decision Conference 2008, CCDC 2008 - Yantai, Shandong, China
Duration: 2 Jul 20084 Jul 2008

Publication series

NameChinese Control and Decision Conference, 2008, CCDC 2008

Conference

ConferenceChinese Control and Decision Conference 2008, CCDC 2008
Country/TerritoryChina
CityYantai, Shandong
Period2/07/084/07/08

Keywords

  • Accuracy analysis
  • Error model
  • Inverse kinematics
  • Kinematic calibration
  • Parallel robot

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