Double-cylinder synchronous control system
A synchronous control, double cylinder technology, applied in fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve the problem that the absolute zero error of the sensor cannot be realized, the displacement error of the double cylinder cannot be adjusted, and the parts are the same, etc. problems, to achieve the effect of easy implementation, simple structure and good control effect
Inactive Publication Date: 2010-05-12
HUNAN HEFENG CNC MACHINE TOOL
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Problems solved by technology
Among them, the absolute zero error of the sensor installation is impossible to achieve, even if it is realized, the displacement error of the double cylinder during the operation of the equipment cannot be adjusted; and the volume of the oil circuit and the cylinder pressure chamber of the two cylinders cannot be absolutely consistent. Because the parts processed by any kind of equipment are absolutely impossible to be exactly the same
Therefore, this oil cylinder synchronization technology has insurmountable defects
Method used
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Embodiment 1
[0013] Such as figure 1 As shown, the first displacement sensor and the second displacement sensor respectively collect electrical signals corresponding to the real-time displacement data of the first master cylinder and the second master cylinder and send them to the controller (if the sensor output is an analog signal, an AD converter is required for data conversion). The obtained two sets of digital signals are sent to the computer (controller) for analysis. The displacement difference is analyzed and calculated by the controller, and the real-time data parameter calculation is carried out according to PID (proportional differential integral). A DA converter needs to be introduced]. Then the hydraulic oil flow adjustment value is sent to the first proportional amplifier and the second proportional amplifier, and the first proportional amplifier adjusts the opening of the first proportional valve to be larger or smaller, thereby adjusting the speed increase or deceleration...
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The invention provides a double-cylinder synchronous control system which is characterized in comprising a first main cylinder, a second main cylinder, a controller, a first displacement transducer, a second displacement transducer, a first proportional amplifier, a second proportional amplifier, a first proportional valve and a second proportional valve, wherein the output end of the first proportional amplifier, the first proportional valve and the control end of the first main cylinder are successively connected in series; the output end of the second proportional amplifier, the second proportional valve and the control end of the second main cylinder are successively connected in series; the first displacement transducer and the second displacement transducer are respectively arranged on the first cylinder and the second cylinder; the signal output end of the first displacement transducer and the output end of the second displacement transducer are both connected with the input port of the controller; and the input end of the first proportional amplifier and the input end of the second proportional amplifier are both connected with the output port of the controller. The invention can realize that the first cylinder and the second cylinder can still keep synchronous in the whole process of starting-up operation.
Description
technical field [0001] The invention belongs to the electromechanical integration technology and relates to a double oil cylinder synchronous control system. Background technique [0002] The existing oil cylinder synchronization technology is mainly realized by the absolute zero error of the installation of the displacement sensor on the oil cylinder and the absolute consistency of the volume of the oil circuit and the pressure chamber. Among them, the absolute zero error of the installation of the sensor cannot be realized. Even if it is realized, the displacement error of the double cylinder during the operation of the equipment cannot be adjusted; and the volume of the oil circuit and the cylinder pressure chamber of the two cylinders cannot be absolutely consistent. Because the parts processed by any kind of equipment are absolutely impossible to be exactly the same. Therefore, this oil cylinder synchronization technology has insurmountable defects. Contents of the i...
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Login to View More IPC IPC(8): F15B21/08F15B11/22
Inventor 杨定华赵莎莎张鹏
Owner HUNAN HEFENG CNC MACHINE TOOL