Method and device for real-time detection of faults of electro-hydraulic proportional solenoid valve
An electro-hydraulic proportional and real-time detection technology, which is applied in the direction of measuring devices, circuit breaker testing, measuring electricity, etc., can solve problems such as no technical solutions, achieve accurate positioning, improve accuracy, and ensure accuracy
Active Publication Date: 2019-02-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
And how to detect and accurately locate the fault of the electro-hydraulic proportional solenoid valve, there is no corresponding solution in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0042] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.
[0043] Solenoid valve faults are mainly divided into three faults: short circuit to power supply, short circuit to ground, and open circuit. If the fault of the solenoid valve in the working circuit can be detected in real time and the cause of the fault can be accurately located, the fault can be eliminated in time and the impact on the working system can be reduced.
[0044] To this end, the embodiment of the present invention provides a method and device for real-time detection of electro-hydraulic proportional solenoid valve faults. The sampling resistor is connected in series in the working circuit of the electro-hydraulic proportional solenoid valve, and the electro-hydraulic proportional solenoid valve is j...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a fault real-time detection method and a fault real-time detection device for an electro-hydraulic proportional solenoid valve. The fault real-time detection method comprises the steps of: connecting a sampling resistor in series in an operating circuit of the electro-hydraulic proportional solenoid valve in advance; acquiring a voltage difference between two ends of the sampling resistor in real time; judging whether the electro-hydraulic proportional solenoid valve has an output-ground short circuit fault, an output open-circuit fault or an output-power supply short-circuit fault according to the voltage difference; if not, calculating a current flowing through the sampling resistor according to the voltage difference; and determining whether the electro-hydraulic proportional solenoid valve fails according to the current. By adopting the fault real-time detection method and the fault real-time detection device, the state of the electro-hydraulic proportional solenoid valve can be detected in real time during operation, and the cause of the fault can be precisely positioned.
Description
technical field [0001] The invention relates to the field of solenoid valve fault detection, in particular to a method and device for real-time fault detection of an electro-hydraulic proportional solenoid valve. Background technique [0002] Electro-hydraulic proportional control technology is a relatively young technology. Its development and general application is less than 50 years. However, with its advantages, it has formed an important branch in the field of fluid transmission and control, and has become a modern hydraulic control engineering. One of the basic technical components. The electro-hydraulic proportional solenoid valve is a component in which the proportional electromagnet in the valve generates corresponding actions according to the input voltage signal, so that the valve core of the working valve is displaced, the size of the valve port is changed, and the pressure and flow output proportional to the input voltage are completed. Spool displacement can a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327G01R31/02
CPCG01R31/327G01R31/50
Inventor 周沛泽张友皇董蕾黄强王维
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD