The 2-DOF parallel platform can greatly enhance the traditional platform pointing capability under heavy load,high velocity,high acceleration and large workspace conditions,and expand the application of parallel platforms in a wide field because of the particularity of movement pattern.Obviously,the precise dynamic model is the prerequisite for the achievement of its high velocity,high precision motion control.Omni-wrist III is a quasi-sphere motion 2-DOF parallel platform has symmetric structure and large ...