Volume 32 Issue 07
Jul.  2006
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Wang Pin, Liao Qizheng, Wei Shimin, et al. Direct position analysis of nine-link Barranov truss based on Dixon resultants[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(07): 852-855. (in Chinese)
Citation: Wang Pin, Liao Qizheng, Wei Shimin, et al. Direct position analysis of nine-link Barranov truss based on Dixon resultants[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(07): 852-855. (in Chinese)

Direct position analysis of nine-link Barranov truss based on Dixon resultants

  • Received Date: 18 Aug 2005
  • Publish Date: 31 Jul 2006
  • The assembly configurations of a kind of non-planar nine-link Barranov truss were analyzed by using Dixon's resultants. Four equations were established for the four loops of the mechanism by using vector method and they were changed into complex exponent numbers form. Dixon method was adopted to construct a 22×22 Dixon matrix and then the greatest common divisor of two columns was extracted. After expanding the determinant of the matrix, a 64 degree univariate polynomial equation was obtained and 6 extraneous roots were canceled in the process of solving the other 3 variables. The same result could be obtained by using homotopy continuations method. A numerical example is given and it verifies that the number of assembly configurations of this kind of Barranov truss is 58.

     

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