ABSTRACT
A synchronous control scheme is proposed for the dual-driving feed system of the gantry machine. This technology will minimize the position error oscillation and achieve the precise synchronization performance in the high-speed and high-precision drive system, especially in some high-speed and high-precision machines. The dual-driving dynamic mode is proposed by considering the servo and flexible ball-screw feed mechanical system, and the mechanical system is modeled inconsideration of the longitudinal and torsional dynamics of the compliance of the screw, nut, table and the coupled characteristics between the dual-driving axes. Moreover, a cross-coupled compensation matrix is provided to offset the mismatched disturbance. The performance experiment of a proposed Hybrid Cross-Coupled Compensation Control (HCCCC) is investigated by using a dual-driving control system, and the results show the effectiveness of the proposed control scheme.
