JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 35 Issue 3
May 2020
Article Contents
WAN Yu, ZHANG Chunyan, ZHU Jinyi, et al. Singularity analysis of multi-mode mobile 3-RSR parallel mechanism based on screw theory[J]. Journal of Light Industry, 2020, 35(3): 88-98. doi: 10.12187/2020.03.011
Citation: WAN Yu, ZHANG Chunyan, ZHU Jinyi, et al. Singularity analysis of multi-mode mobile 3-RSR parallel mechanism based on screw theory[J]. Journal of Light Industry, 2020, 35(3): 88-98. doi: 10.12187/2020.03.011 shu

Singularity analysis of multi-mode mobile 3-RSR parallel mechanism based on screw theory

  • Received Date: 2019-12-13
  • Aiming at the singular configuration of 3-RSR parallel mechanism in the process of motion, a new method based on the theory of screw, geometric algebra and space linear geometry theory was proposed to analyze the singularity of 3-RSR parallel mechanism in the full-attitude and multi-motion mode.The method first used screw theory to find the 3-RSR complete Jacobin matrix of parallel mechanism, and then represented the anti-screw of each branch of the mechanism by algebraic method and geometric mapping method.The singularity diagram of the mechanism in the fixed mode was obtained to make the singularity analysis of the full-attitude and multi-motion mode, combining with the space linear geometry theory to analyz the anti-screw correlation. The results showed that this method could more concisely and intuitively represent the singular configuration of 3-RSR parallel mechanism in two motion modes, and it did not need a lot of calculation. It was also suitable for solving the singular configuration of other multi-mode mobile parallel mechanisms.
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