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[CN 201710548918.3] Passive Electro-hydraulic Leveling System of Hydraulic Press
[CN 201710548918.3] Passive electro-hydraulic leveling system of hydraulic press Title: Passive electro-hydraulic leveling system of hydraulic press Application number: CN 201710548918.3 Applicant: Bosch Rexroth (Changzhou) Co., Ltd. Application date: 2017-7-7 Patent type: Invention application A passive electro-hydraulic leveling system for hydraulic press includes: multiple leveling cylinders for hydraulic press slider to apply leveling force; synchronous control unit; and an information acquisition element and a leveling cylinder control element connected to the synchronization control unit. The information collecting element detects the position information of the piston rod of each leveling cylinder and the pressure information of each leveling cylinder and the main hydraulic cylinder of the hydraulic machine. The synchronization control unit receives the position information and the pressure information from the information collection member, and determines and outputs a control command to be sent to the leveling cylinder control member. In the synchronization control unit, the position information is converted into an equivalent force value, which is used in combination with the pressure information to determine the control command, so that the slider position leveling and the total leveling force control can be simultaneously realized by the control command.
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