An efficient approach to the forward kinematics of a planar parallel manipulator with similar platforms

Ping Ji, Hongtao Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


The forward kinematics of a parallel manipulator is so difficult that the analytical solutions of only a few parallel manipulators have been found. The forward kinematics of a three-degree-of-freedom planar parallel manipulator, where the base and the mobile platforms are two similar triangles, is studied in this paper and its analytical solution is provided. The final solution is two independent univariate quadratic equations. As well, the forward kinematics solution is simplified to the parallel manipulator where the two triangles are equilateral and a numerical example is presented.
Original languageEnglish
Pages (from-to)647-649
Number of pages3
JournalIEEE Transactions on Robotics and Automation
Issue number4
Publication statusPublished - 1 Aug 2002


  • Analytical solution
  • Forward kinematics
  • Parallel manipulator

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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