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Direction control valve braking method

A technology of directional control valve and closed-loop control, which is applied in the direction of valve operation/release device, valve detail, valve device, etc. It can solve the problems of difficulty in ensuring accuracy and restricting the performance of directional control valve, and achieve low mechanical wear and high The effect of power density and long service life of equipment

Inactive Publication Date: 2013-09-18
WUXI HUAMU MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Directional control valves, because they belong to the category of machinery, often adopt axis control in the process of control. Because the accuracy of the current control method (axis control) is difficult to be guaranteed, it also restricts the use of directional control valves. Its application-level performance is further improved

Method used

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Embodiment Construction

[0014] The braking method of the directional control valve described in the embodiment of the present invention first collects the steering angle signal of the directional control valve through the integrated digital amplifier, then amplifies it through the integrated digital amplifier, and at the same time feeds back the position signal of the liquid level sensor inside the oil cylinder, Closed-loop control is realized; the flow velocity flowing through the directional control valve is detected again, and fed back to the integrated digital amplifier, and then the rotation angle of the steering motor of the directional control valve is corrected.

[0015] It is also mentioned that the sensor is docked with the integrated digital amplifier by means of wireless transmission.

[0016] A speed sensor is arranged on the pipeline where the directional control valve is located.

[0017] The integrated digital amplifier performs AD conversion on the steering angle signal.

[0018] Th...

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PUM

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Abstract

The invention discloses a direction control valve braking method which comprises the steps as follows: collecting a turn angle signal of a direction control valve by an integrated digital amplifier at first, then amplifying the turn angle signal by the integrated digital amplifier, and feeding back a position signal of a liquid level sensor in an oil cylinder at the same time to achieve closed-loop control; and detecting the flow speed of liquid flowing through the direction control valve, feeding back the flow speed to the integrated digital amplifier, and correcting a turn angle of a steering motor of the direction control valve. According to the direction control valve braking method, the shortage of the control of an electronic mechanical shaft is made up for, the property of a hydraulic technology is improved at the same time, namely the power density is higher, the energy storage and natural overload protection functions are achieved, the mechanical wear is low, the service life of equipment is longer, and the linear movement can be directly realized.

Description

technical field [0001] The invention relates to a braking method for a directional control valve, which belongs to the technical field of hydraulic mechanical control. Background technique [0002] Directional control valves, because they belong to the category of machinery, often adopt axis control in the process of control. Because the accuracy of the current control method (axis control) is difficult to be guaranteed, it also restricts the use of directional control valves. Its application-level performance has been further improved. [0003] Today's society is completely driven by digital electronic devices: computers, automation systems, automobiles, aerospace, electronic communications, and advanced network technologies are all built on digital technology. Compared with analog technology, digital technology has more typical advantages: faster and stronger data processing capability, simpler programmability, immunity to electromagnetic noise interference, signal proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/02
Inventor 徐晓东
Owner WUXI HUAMU MACHINERY
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