Research on short time and heavy load driving system of crank servo press based on feed-forward and decoupling control

Abstract

In order to improve the speed control performance on the heavy load driving system of servo press, a control strategy based on speed observer with load torque identification and feed-forward compensation was proposed. It can identify and compensate the actual applied load torque by adjusting the machine quadrature axis current in real time. By identifying the problem in the traditional current feedback decoupling control scheme, a current vector control strategy based on voltage feed-forward decoupling control was proposed. Simulation analysis and experimental tests on a heavy load drive system were carried out using the proposed new control strategy. The results show that the control strategy is effective and the system designed by this method not only can identify the operating speed applied load torque, but also has good speed control performance.