Abstract:The complex formula of displacement,velocity and acceleration of crank and 6R Ⅲ degree basic bar group is derived by complex.And so it is the dynamic complex formula of the same mechanism.The complex formula is changed to matrix fomlula for MATIAB simulation.According to the matrix formula,M—function of crank and 6RⅢdegree basic bar group is made up for simulation model block.MATLAB simulation modeI of 7R six barⅢdegree mechanism is given.Main idea of the paper is to build MATLAB simulation model of aU kinds lower pair mechanism by cell of basic bar groups.
Key words:kinematics;mechanism;simulation;bar group