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[CN 201910720703.4] Speed-pressure compound control method of rotary forging hydraulic press
[CN 201910720703.4] Title of Speed-Pressure Composite Control Method for Rotary Rolling Hydraulic Press: Application Number of Speed-Pressure Composite Control Method for Rotary Rolling Hydraulic Press: CN 201910720703.4 Applicant: Nantong Forging Equipment Rugao Co., Ltd. Application Date: 2019-8-6 Patent Type: Application for Invention The present invention discloses a speed-pressure composite control method for rotary rolling hydraulic press. The hardware system mainly includes: a displacement sensor for detecting the piston displacement of the master cylinder; Master cylinder, used to provide thrust to drive the slider and the pressure head; the first pressure sensor is used to detect the pressure of the master cylinder action chamber; the proportional control valve is used to adjust the flow rate into the master cylinder action chamber; the second pressure sensor is used to detect the constant pressure The pressure of the oil source; the constant pressure oil source is used to provide a constant pressure hydraulic oil source; the controller is used to collect the signals of the displacement sensor, the first pressure sensor, and the second pressure sensor, and the second pressure sensor to perform control calculation, and the control command signal is transmitted to the proportional control valve. The invention combines the speed control and pressure control of the swing hydraulic machine by using the minimum absolute value algorithm of the control signal, realizes the automatic planning of the control target and the smooth switching of the control mode, and solves the coordination problem of speed control and pressure control in the swing process.
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