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Intelligent jamming and chucking detection controller for hydraulic valve

An intelligent controller and jamming technology, applied in the field of hydraulic valves, can solve problems such as complex structure, high cost, and no online real-time fault diagnosis device, and achieve low cost, improved service life, high sensitivity and accuracy Effect

Inactive Publication Date: 2012-08-01
SHAOXING UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no more sensitive and accurate online real-time fault diagnosis device, or although there is a similar device, the structure is complex and the cost is high

Method used

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  • Intelligent jamming and chucking detection controller for hydraulic valve
  • Intelligent jamming and chucking detection controller for hydraulic valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Stuck Fault Detection

[0028] Such as figure 1 As shown, an intelligent controller for jamming and jamming detection of a hydraulic valve is electrically connected with an electro-hydraulic proportional valve equipped with a proportional electromagnet and a spool. Including flutter signal generation module 16, system control signal module 14, regulated power supply module 15, PID control module 17, power amplification module 18, sampling module 19, signal processing module 20, negative feedback module 21, jamming judgment module 22 and repair the control module 23 of the clamping device.

[0029] Among them, the stabilized power supply module 15 is respectively connected with the flutter signal generating module 16, the PID control module 17, the power amplification module 18, the sampling module 19, the signal processing module 20, the negative feedback module 21, the jamming judgment module 22 and the repair card. The clamping device control module 23 i...

Embodiment 2

[0036] Embodiment 2: Clamping fault detection

[0037] Such as figure 1 As shown, an intelligent controller for jamming and jamming detection of a hydraulic valve is electrically connected with an electro-hydraulic proportional valve equipped with a proportional electromagnet and a spool. In this embodiment, other contents of the intelligent controller are the same as those in Embodiment 1, and will not be repeated here.

[0038] When a jamming fault occurs, when the jamming judgment module gives a jamming judgment, the jamming fault resolution mode is started, that is, the control module for repairing the jamming device sends a control signal, and the repair card for repairing the jamming device is started. tightening function and start the timing device at the same time. Therefore, according to the severity of the fault, the function of repairing jamming or repairing clamping can be given to start working, energy is saved, damage to the hydraulic valve by the repairing de...

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Abstract

The invention relates to an intelligent jamming and chucking detection controller for a hydraulic valve. The intelligent jamming and chucking detection controller is electrically connected with an electro-hydraulic proportional valve provided with a proportional electromagnet and a valve element, and comprises a flutter signal generation module (16), a system control signal module (14), a stabilized power module (15), a proportion integration differentiation (PID) control module (17), a power amplification module (18), a sampling module (19), a signal processing module (20), a negative feedback module (21) and a jamming and chucking decision-making module (22), wherein the jamming and chucking decision-making module (22) makes jamming and chucking membership decision by a fuzzy multi-criteria decision-making method. By the controller, a jamming and chucking failure of a valve element of a sliding valve can be detected and judged in real time; and the controller is high in sensitivity and accuracy, simple in structure and low in cost.

Description

technical field [0001] The invention relates to a hydraulic valve, in particular to an intelligent controller for jamming and jamming detection of the hydraulic valve. Background technique [0002] The spool valve mechanism is the most widely used structural form in various hydraulic valves. The spool valve is composed of three main parts: the valve body, the valve core and the valve cavity. By changing the position of the spool in the valve body cavity, the spool valve can be Realize the change and on-off of fluid flow. Spool valve jamming or even jamming fault is one of the most common faults and failure forms in the hydraulic system, which can generally be divided into two categories: hydraulic jamming, jamming and mechanical jamming. In layman's terms, jamming refers to the intermediate state between normal working conditions and jamming. Jamming means that the valve core cannot move. Jamming means that the valve core is difficult to move, which is not as smooth as norm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00F16K31/06
Inventor 李伟波张华芳
Owner SHAOXING UNIVERSITY
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