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[CN 201710282260.6] Constant strain control system and control method of superplastic isothermal forging hydraulic press
[CN 201710282260.6] Constant Strain Control System and Control Method of Superplastic Isothermal Forging Hydraulic Press Title: Constant Strain Control System and Control Method of Superplastic Isothermal Forging Hydraulic Press Application Number: CN 201710282260.6 Applicant: Tianjin Tianforging Press Co., Ltd. Application Date: 2017-4-26 Patent Type: Invention Application The present invention discloses a constant strain control system and control method of superplastic isothermal forging hydraulic press, including: displacement sensor for collecting slider position data; proportional pump, used to provide adjustable and controllable oil to the oil cylinder to make the slider move; high-frequency corresponding direction valve, used to provide adjustable and controllable oil to the oil cylinder to make the slider move; programmable controller, used to Read the slider position data and calculate the real-time speed of the slider, control the flow rate of the output proportional pump and the flow rate of the high-frequency corresponding direction valve; the input port of the programmable controller is electrically connected to the displacement sensor, the output port of the programmable controller is electrically connected with the flow control circuit of the proportional pump, and the output port of the programmable controller is electrically connected with the high-frequency corresponding directional valve terminal. The invention achieves the purpose of constant strain process control based on the leveling system required in the superplastic isothermal forging hydraulic press according to the proportional pump flow or proportional servo valve flow of the programmable controller output in real time.
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