Dynamics Modeling And Control System Design Of60MN Water Press

Water press is one of the key equipment of large forging processing industry. Theautomation control level and manufacturing level of high tonnage water press are asymbol of national strength. Due to the low forging precision and automation level ofdomestic water presses, this paper takes a60MN water press of an enterprise as theresearch object. Position control of the activity crossbeam in water press forging process isstudied; the system dynamics model and controller are established; the60mm water presscontrol system is designed. This paper mainly completes the following work:(1) By consulting a large number of relevant literatures, the development history ofwater press, the research status and the control technology of the water press areunderstood. By analyzing the composition and working principle of water press equipment,the dynamic model of idle down, pressure and return in forging process are establishedaccording to the Newton’s second law, the flow equation of the hydraulic system and thecompressibility of the liquid law. Through the integration of the three stages model, thedynamic model of fast forging process is established.(2) Due to the60MN water press system is a large inertia, nonlinear and time-varyingsystem, a fuzzy PID controller and fuzzy sliding mode controller is designed. Through theanalysis of the simulation curves, the result shows that the fuzzy sliding mode controllerhas better control characteristics.(3) On the basis of the analysis of the control requirements and process in the60MNwater press system, a60MN water press control system is designed, including the designof master-slave stations, machine program and PC program. Operating data of60MNwater press are analyzed. The result demonstrates that the control system can meet therequirements of the60MN water press unit.