研制了具有等温锻功能的80 MN锻造液压机液压控制系统。针对能量损耗低和控制精度高的要求,采用了西门子S7-400 PLC与Trio控制器相结合的控制方案,PLC实现液压泵的控制、电液伺服阀的切换、工作台控制、加热与冷却系统控制、润滑系统控制及安全监测;Trio完成速度控制与平度控制的任务,获得了预期的控制结果。 The 80 MN forging hydraulic machine hydraulic control system with isothermal forging function was developed. For low energy loss and high control precision requirements, using Siemens S7-400 PLC and Trio controller combination of control programs, PLC control of the hydraulic pump, electro-hydraulic servo valve switching, table control, heating and cooling system Control, lubrication system control and safety monitoring. Trio completed the tasks of speed control and level control and obtained the expected control results.