Hydraulic cylinder frictional compensation control method study

A control method and friction compensation technology, applied in the field of pressure control systems, can solve problems such as hydraulic oil flow control, loss, oil leakage, etc., to resist the influence of friction, improve tracking accuracy, and operate effectively and reasonably

Inactive Publication Date: 2018-08-17
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many researchers have done a lot of research on the accuracy of hydraulic control, mainly focusing on the hardware control of the external system. There is very little research on the controller. Hardware friction compensation has especially unavoidable defects, such as flow control and loss of hydraulic oil, oil spill etc.

Method used

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  • Hydraulic cylinder frictional compensation control method study
  • Hydraulic cylinder frictional compensation control method study
  • Hydraulic cylinder frictional compensation control method study

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Embodiment Construction

[0015] The specific structure and implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] combine Figures 1 to 4 , the present invention relates to a hydraulic cylinder friction compensation device and control method, which belongs to the field of hydraulic control system, and its composition includes: motor, pump, filter, electro-hydraulic servo valve, amplifier, controller, position commander, displacement sensor, hydraulic pressure Cylinder, load, relief valve and other components. The motor controls the pump to supply oil to the electro-hydraulic servo valve through the filter, one end of the filter returns to the oil tank through the overflow valve, and the other end supplies oil to the hydraulic cylinder through the oil inlet of the electro-hydraulic servo valve to push the piston rod of the hydraulic cylinder to move. After the position commander receives the command, it inputs the signal cur...

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PUM

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Abstract

The invention relates to a hydraulic cylinder frictional compensation device and a control method, and belongs to the field of hydraulic control systems. The device comprises a motor, a pump, a filter, an electro-hydraulic servo valve, an amplifier, a controller, a position instruction device, a displacement sensor, a hydraulic cylinder, a load, an overflow valve and the like; a motor control pumpsupplies oil to the electro-hydraulic servo valve through the filter, one end of the filter passes through an overflow valve oil returning box, the other end of the filter supplies oil to the hydraulic cylinder through an oil inlet of the electro-hydraulic servo valve, a hydraulic cylinder piston rod is pushed to move, the position instruction device receives an instruction, signal current is input to the electro-hydraulic servo valve through the controller and the amplifier, the load aim is achieved, displacement of the piston rod is converted into current through the displacement sensor tobe compared with an input signal, and a hydraulic feedback system is formed. Through the control process, the system tracking precision is improved, and the higher system dynamic and static response performance can be achieved.

Description

Technical field [0001] The invention relates to a hydraulic cylinder friction compensation device, which belongs to the field of pressure control systems. Background technique [0002] The electro-hydraulic servo system is used in aerospace, artillery, aircraft control systems and other devices due to its good servo performance, high control precision and fast speed, and has become an important aspect of the automatic production line. Many researchers have done a lot of research on the accuracy of hydraulic control, mainly focusing on the hardware control of the external system. There is very little research on the controller. Hardware friction compensation has especially unavoidable defects, such as flow control and loss of hydraulic oil, Oil spill etc. In the soft control of the controller, although there are certain defects, its control performance is good. Compared with hardware control, it has strong dynamic and static response performance, and has become the main meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B19/00F15B13/12F15B21/02
CPCF15B19/007F15B13/12F15B21/02
Inventor 李建英李士铭董法堂
Owner HARBIN UNIV OF SCI & TECH
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