【摘要】 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。更多还原

【Abstract】 80 MN hydraulic press control system which had the isothermal forging function was designed.In order to improve control accuracy and reduce energy loss,a new control scheme based on Siemens S7-400 PLC and Trio motion controller was proposed.The S7-400 PLC worked as the lower PC which could fulfill the system logic control including hydraulic pump control,switching control of electric-hydraulic servo valve,worktable control,alarm supervisor and parameter configuration;meanwhile the Trio motion controller worked as the field controller which could guarantee the speed tracking and position consensus.The experiment results show a good performance in our control scheme.更多还原