A Non-recursive Formulation of Dynamic Force Analysis in Recursive Multibody Dynamics

순환 다물체동역학에서의 비순환적인 동하중해석 공식

  • Kim, Seong-Su (Dept. of Mechatronics Engineering, Chungnam National University) ;
  • 김성수 (충남대학교 메카트로닉스공학과) ;
  • Published : 1997.01.01


An efficient non-recursive formulation of dynamic force analysis has been developed for serially connected multibody systems. Although derivation of equations of motion is based on a recursive dynamic formulation with joint relative coordinates, in the proposed formulation, dynamic forces such as joint reaction forces and driving force are computed non-recursively for specified joints. The efficiency of the proposed formulation has been proved by the operational count and the CPU time measure, comparing with that of the conventional recursive Newton-Euler formulation. A simulation of 7-DOF RRC robot arm has been carried out to validate solutions of reaction forces by comparing with those from a commercial dynamic analysis program DADS.