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A high-sensitivity solenoid valve constant current drive control method

A constant current drive, solenoid valve technology, applied in the control/regulation system, valve details, valve device and other directions, can solve the problems of weak dynamic adjustment ability, low control accuracy, large reverse voltage, etc., to achieve dynamic adjustment ability Strong, increase the transmission efficiency, the effect of small output ripple

Active Publication Date: 2021-12-28
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of large reverse voltage, weak dynamic adjustment ability and low control precision of the existing solenoid valve drive circuit, and provide a high-sensitivity constant current drive control method for solenoid valves

Method used

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  • A high-sensitivity solenoid valve constant current drive control method
  • A high-sensitivity solenoid valve constant current drive control method
  • A high-sensitivity solenoid valve constant current drive control method

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Embodiment 1

[0051] For the convenience of understanding the method of the present invention, with figure 1 Taking the solenoid valve drive circuit as an example, the structure and working principle of the solenoid valve drive circuit are described, and a high-sensitivity solenoid valve constant current drive power supply is provided. The drive power supply specifically includes a voltage conversion module, an isolation drive module, and a control module. , conversion module, constant current circuit module, feedback module, input module, display module, hot-swappable circuit module and auxiliary power circuit module. The input module is specifically a button, which is used to set the expected value of the output current of the constant current circuit module and dynamically adjust the driving power. The conversion module is specifically a DA converter, which is used to convert the digital reference signal output by the control module into an analog reference signal. The display module is...

Embodiment 2

[0064] Such as Figure 5 As shown, the purpose of the present invention is to overcome the problems of large reverse voltage, weak dynamic adjustment ability, and low control precision of the existing solenoid valve drive circuit, and provide a high-sensitivity solenoid valve constant current drive control method. The valve constant current drive circuit parameter information refines the output current of the solenoid valve constant current drive circuit to avoid large reverse voltage, strong dynamic adjustment capability, and high control accuracy. Wherein, the circuit parameter information includes the feedback current, the drain-source voltage information of the regulator tube in the voltage loop inside the solenoid valve constant current drive circuit. More specifically, as Figure 6 As shown, the method of the present invention is implemented based on the voltage envelope current technology. In the figure, the mark 1 is the output voltage waveform of the electromagnetic ...

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Abstract

The invention discloses a high-sensitivity solenoid valve constant current drive control method, which belongs to the technical field of power supply control. Adjusting and refining the output current of the solenoid valve constant current drive circuit can quickly refine the output of a stable constant current, the current regulation accuracy is high, the reverse voltage generated by the solenoid valve is small, and the service life of the electronic device is prolonged; It can also minimize system loss and increase transmission efficiency.

Description

technical field [0001] The invention relates to the technical field of power supply control, in particular to a high-sensitivity solenoid valve constant current drive control method. Background technique [0002] As a basic component of automation, solenoid valves are widely used in various industrial scenarios. For example, in nuclear reactors, the operation of starting, stopping, power regulation, and accident reverse insertion of the reactor is realized by controlling the solenoid valve to adjust the position of the control rod. When the solenoid valve is energized, its coil generates electromagnetic force to lift the closing member from the valve seat to open the valve. When the valve is opened, the armature continues to absorb, the stroke distance is reduced to the minimum, and the electromagnetic force reaches the maximum. When the armature is in the state, the extra power passes through. Coil resistance is converted into heat energy, and the long-term accumulation of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56F16K31/06
CPCG05F1/56F16K31/0675
Inventor 朱玉颖朱玉玉李佳鑫康玉宽
Owner SOUTHWEAT UNIV OF SCI & TECH
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