关键词: 精冲机, 滑模控制, 双电机, 协调自适应, 驱动系统, 机械伺服

Abstract:  Aiming at the problems of uncoordinated motions for mechanical servo high-speed fine stamping machines in dual-motor combined driving processes, a dual-motor coordinated motion control strategy was proposed based on adaptive sliding mode variable structure control. The sliding mode variable structure control was introduced into servo motor motion control, and the fuzzy algorithm was used to optimize sliding mode control parameters to reduce chattering while improving the robustness of the systems. Different from the simplified structure of the transmission systems as a rigid body in traditional dynamics analysis, a rigid-flexible coupling transmission system dynamics model of the fine stamping machines was established. The simulation results show that the proposed control strategy may make the main motor provide punching forces in stamping stages, and make the auxiliary motor connecting toggle link realize rapid return of sliding block in idle stages, which fulfil the requirements of design and usage for the fine punchs.

Key words:  , fine stamping machine, sliding mode control, dual-motor, coordination and adaptation, drive system, mechanical servo