基于二次调节的锻造操作机重力势能回收与再利用

针对传统阀控式锻造操作机夹钳下降时重力势能被浪费的情况，通过采用二次调节技术与原液压系统相结合，构建了一种节能型锻造操作机液压回路.基于该液压回路对夹钳重力势能的回收与再利用提出了恒压差的压力闭环控制策略，并且基于某企业100 kN锻造操作机进行了仿真研究.结果表明，这种节能型锻造操作机液压回路在满足系统控制特性指标的基础上，具有良好的势能回收及能量再利用效果，可以降低液压系统的能耗. 

Recovery and Reuse of Gravity Potential Energy of Forging Manipulator Based on Secondary Regulation

To solve the problem of gravity potential energy waste during the clamp descending of the traditional valve-controlled forging manipulator,an energy-saving forging manipulator hydraulic circuit was constructed by combining the secondary hydraulic control system with the secondary adjustment technology. On the basis of the hydraulic circuit,a pressure closed loop control strategy with constant pressure differential was proposed for the recovery and reuse of the clamp''s gravitational potential energy,and a simulation study was carried out based on a company''s 100 kN forging manipulator. The results show that,this type of energy-saving forging manipulator hydraulic circuit can achieve potential energy recovery and energy reuse effects on the basis of satisfying the system control characteristic index. It can reduce the energy consumption of the hydraulic system and provide new ideas for the hydraulic system design of the forging manipulator in the future.