Synchronous control system for master and salve hydraulic cylinders with fixed potential difference and control method therefor

A technology of synchronous control and fixed position difference, which is applied in the direction of fluid pressure actuators, servo motors, mechanical equipment, etc.
CN103742467AActive Publication Date: 2014-04-23MAGANG (GROUP) HOLDING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MAGANG (GROUP) HOLDING CO LTD
Publication Date
2014-04-23

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Abstract

The invention discloses a synchronous control system for master and salve hydraulic cylinders with fixed potential difference. The synchronous control system for the master and salve hydraulic cylinders with fixed potential difference comprises a device body, a master hydraulic cylinder, n slave hydraulic cylinders, n+1 proportion adjusting valves and n+1 hydraulically controlled check valves, wherein the synchronous control system for the master and salve hydraulic cylinders further comprises three control programs, respectively are a synchronous control program for the master hydraulic cylinder with fixed potential difference, a synchronous control program for the slave hydraulic cylinders with fixed potential difference and a maximum potential difference protection control program for the master and slave hydraulic cylinders with fixed potential difference; According to the hydraulic cylinder synchronous control scheme provided by the invention, the high-accuracy synchronous movement of the plurality of hydraulic cylinders is achieved in the case of keeping certain distances among the hydraulic cylinders, and extremely strong robustness is provided. Therefore, the service life of the hydraulic cylinder is greatly prolonged, and the fault of stopping production to replace the leaked hydraulic cylinder is avoided.
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Description

technical field

[0001] The invention belongs to the technical field of hydraulic transmission control manufacturing, and in particular relates to a master-slave hydraulic cylinder synchronous control system and a control method thereof with a fixed potential difference. Background technique

[0002] At present, hydraulic transmission control systems and their control methods are often used in industrial production. Sometimes it is necessary to use two or more hydraulic cylinders to synchronously drive a piece of equipment or multiple independent equipment operation. For example, in a large H-shaped steel production line, the side guide plates on both sides of the rolling stock between the racks of the universal roughing unit are synchronously driven by four hydraulic cylinders, and the synchronous control mode of the hydraulic cylinders belongs to the electronic control mode. This control mode requires each hydraulic cylinder All have position sensors (such as magnetostrict...

Claims

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