Maximum velocity analysis of parallel manipulators

In order to analyse the maximum velocity of parallel manipulators in operational space, a graphical method based on the analysis of the algebraic inequalities describing the constraints on the kinematics model is presented. We consider a general 6 d.o.f parallel manipulator and assume that all articular velocities are bounded by the same limit. The method is then applied to the conventional Stewart platform chosen as a reference and a new parallel manipulator for their performance comparisons. For these two parallel manipulators, respective formula of Jacobian matrix is also given