KR101549480B1 - Flow regulator for pressure control method - Google Patents
Flow regulator for pressure control method Download PDFInfo
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- KR101549480B1 KR101549480B1 KR1020130112059A KR20130112059A KR101549480B1 KR 101549480 B1 KR101549480 B1 KR 101549480B1 KR 1020130112059 A KR1020130112059 A KR 1020130112059A KR 20130112059 A KR20130112059 A KR 20130112059A KR 101549480 B1 KR101549480 B1 KR 101549480B1
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- pressure
- solenoid valve
- receiver tank
- large flow
- air
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Abstract
A pressure regulating method for a large flow regulator is disclosed.
A receiver tank coupled to the large flow regulator to provide atmospheric pressure with a large flow regulator; An air pressure sensor provided between the receiver tank and the large flow rate regulator for sensing a pressure value of air flowing from the receiver to the large flow rate regulator; A pressure solenoid valve for selectively pressurizing the air pressure introduced into the receiver tank so as to regulate the air pressure introduced into the receiver tank to a specified pressure; And a pressure solenoid valve that is electrically connected to the atmospheric pressure sensor and the solenoid valve for pressurization. When the atmospheric pressure value sensed by the atmospheric pressure sensor is lower than the set pressure, the pressure solenoid valve is operated to raise the atmospheric pressure value to the set pressure, And a control unit for operating the pressure solenoid valve to lower the atmospheric pressure value to a set pressure when the sensed atmospheric pressure value is higher than the set pressure. In order to control the pressure in the large flow rate regulator,
A pressure sensing step of sensing a pressure value flowing into the large flow rate regulator from the receiver tank by an air pressure sensor; The control unit activates the pressure solenoid valve to raise the pressure of the air toward the receiver tank to a value corresponding to the set pressure when the pressure value detected by the pressure sensor is lower than the set pressure, A pressure regulating step of operating the pressure solenoid valve by the control unit to reduce the pressure of the air to the receiver tank according to the set pressure when the pressure is higher than the set pressure; And a decompression step of operating the decompression solenoid valve by the control unit to discharge the pressure in the receiver tank to the atmosphere so as to reduce the pressure in the receiver tank to less than the current pressure.
Description
The present invention relates to a pressure regulating method for a large flow regulator.
More particularly, the present invention relates to a pressure regulating method for a large flow rate regulator that is stable even when controlling a large flow rate of pressure and capable of precise and rapid pressure control.
The conventional regulator control method employs a voltage control method that feeds back only the output voltage.
In order to improve the frequency characteristics of the switching regulator using such a voltage control method, a current control method of feeding back an output voltage and an output current is used (for example, see Patent Document 1). Further, as the same method, a PID control method is used which improves stability by using an approximate differentiator from output voltage feedback.
A switching regulator using a voltage control method controls an inductor current and charges the output smoothing capacitor with the inductor current to generate a predetermined output voltage at a predetermined constant voltage. In such a switching regulator, since the output voltage is fed back to control the output voltage to generate the output current, the switching regulator has the secondary resonance frequency characteristic as a characteristic inherent to the switching regulator. This resonance frequency characteristic lowers the stability of the control loop and complicates the structure of the switching regulator. Therefore, in order to maintain the stability, the gain of the control loop must be lowered, so that the transient response characteristic is deteriorated.
Further, in order to improve the frequency characteristic of the switching regulator of the output voltage feedback type using the voltage control method, a current control method of feeding back the output voltage and the output current is used. Since the output current is fed back to control the output current, the switching regulator has a primary frequency characteristic and is easily controlled. Therefore, it is possible to improve the transient response characteristic of the switching regulator by raising the gain of the control loop.
However, in the current control method, a current-sense resistor is necessary because the current is converted into a voltage and fed back. If the resistance value of the current sense resistor is large, the efficiency of the switching regulator will deteriorate, so a resistor having tens of mΩ should be used for the current sense resistor. However, these resistors are expensive. Further, since the detection voltage by the current-sense resistor is a minute voltage, there is a problem that the minute voltage is easily affected by noise. As a method not using such a current-sense resistor, a method of using the on-resistance of the driver transistor (a method of using the drain voltage of the driver transistor) is employed. This method is more advantageous than using a current-sense resistor in terms of cost and efficiency because it does not use a resistor.
However, due to the switching of the driver transistor, it is difficult to adjust the timing for detecting the drain voltage when the driver transistor is turned on. In addition, since the switching surge of the driver transistor occurs, the voltage immediately after the driver transistor is turned on can not be detected, so that the detection timing is delayed. Also, as in the method using the current-sense resistor, since the microvoltage is used, the microvoltage is also highly susceptible to noise. In a switching regulator using a current control method, subharmonic resonance occurs when the on-duty cycle of the PWM control exceeds 50%.
A slope compensation circuit is required to remove this low harmonic resonance. Such a slope compensation circuit is complicated in structure and its adjustment is very difficult.
Further, in the PID control method in which stability is improved by using an approximate differentiator from the output voltage feedback, the differential value of the output voltage is theoretically fed back. In other words, a value close to the difference between the output current and the inductor current is fed back.
Therefore, it is possible to have frequency characteristics similar to those in the current control method. However, in the PID control type switching regulator, large high frequency noise is superimposed on the output voltage by the ESR from the smoothing capacitor and the surge voltage from the output node of the switching regulator. In a structure using a differentiator, such a high frequency noise apparently causes malfunction.
In this way, the current control method has an advantage that the response characteristic is good, but has a disadvantage in comparison with the voltage control method. The PID control method is vulnerable to noise because it uses a differentiator. On the basis of these facts, there are many switching regulators using the current voltage control scheme.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is a primary object of the present invention to provide a pressure regulation method for a large flow rate regulator which can stably control the pressure of a large flow rate regulator.
Another object of the present invention is to provide a pressure regulating method for a large flow rate regulator which can control the pressure of a large flow rate regulator by organically linking a receiver, a pressure solenoid valve and a pressure reducing sol valve.
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In order to achieve the above object,
A receiver tank connected to the large flow regulator and providing air pressure with a large flow regulator;
An air pressure sensor provided between the receiver tank and the large flow rate regulator for sensing a pressure value of air flowing from the receiver to the large flow rate regulator;
A pressure solenoid valve for selectively pressurizing the air pressure introduced into the receiver tank so as to regulate the air pressure introduced into the receiver tank to a specified pressure; And
And a pressure solenoid valve that is electrically connected to the atmospheric pressure sensor and the solenoid valve for pressurization. When the atmospheric pressure sensed by the atmospheric pressure sensor is lower than the set pressure, the pressure solenoid valve is operated to increase the atmospheric pressure value to the set pressure, And a control unit for operating the pressure solenoid valve to lower the atmospheric pressure value to a set pressure when the sensed atmospheric pressure value is higher than the set pressure. In the pressure regulating system for controlling the pressure in the large flow rate regulator,
A pressure sensing step of sensing a pressure value flowing into the large flow rate regulator from the receiver tank by an air pressure sensor;
The control unit activates the pressure solenoid valve to raise the pressure of the air toward the receiver tank to a value corresponding to the set pressure when the pressure value detected by the pressure sensor is lower than the set pressure, A pressure regulating step of operating the pressure solenoid valve by the control unit to reduce the pressure of the air to the receiver tank according to the set pressure when the pressure is higher than the set pressure; And
And a pressure reducing step of operating the pressure reducing solenoid valve by the control unit to discharge the pressure in the receiver tank to the atmosphere so as to reduce the pressure in the receiver tank to less than the current pressure, Method.
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According to the present invention as described above, in controlling the pressure in the large-flow-rate regulator, by operating the pressure solenoid valve or the pressure-reducing solenoid valve by appropriately adjusting the pressure in the large flow rate regulator, the pressure in the large flow rate regulator can be controlled stably, There is a high degree of reliability.
FIG. 1 is a block diagram of a pressure regulator for a large flow rate regulator according to the present invention, in which a pressure solenoid valve is operated.
FIG. 2 is a block diagram of a pressure regulator for a large flow rate regulator according to the present invention, in which a pressure reducing solenoid valve is operated.
3 is a flowchart illustrating a method of controlling a pressure using a pressure regulator for a large flow rate regulator according to the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.
Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
FIG. 1 is a block diagram of a pressure regulator for a large flow rate regulator according to the present invention, in which a pressure solenoid valve is operated. FIG. 2 is a configuration diagram of a pressure regulator for a large flow rate regulator according to the present invention, And a solenoid valve for decompression is operated.
1 and 2, a
The
The
The
The
That is, when the sensed air pressure value in the
On the other hand, when the atmospheric pressure sensed by the
The pressure regulator (100) for a large flow rate regulator according to the present invention further includes a pressure reducing solenoid valve (150).
The
Here, when the pressure reducing
Hereinafter, a pressure control method using the
Step 1 is a pressure sensing step (S10).
That is, in the sensing of the atmospheric pressure, sensing the pressure value flowing into the large flow rate regulator R from the
Step 2, and pressure control step (S20).
That is, in the pressure control step, when the atmospheric pressure value sensed by the
On the other hand, if the atmospheric pressure sensed by the
In this manner, the pressure value flowing into the large flow rate regulator R according to the pressure value sensed by the
3, and a decompression step (S30).
That is, in the depressurization step, the pressure reducing
Accordingly, the air pressure of the
While the present invention has been described in terms of several devices, methods, and manufacturing parts, the scope of the present disclosure is not limited thereto. On the contrary, the invention is intended to cover all embodiments that fall within the scope of the appended claims, unless the context requires otherwise.
100: Pressure regulator for large flow regulator
110: receiver tank
120: Pressure sensor
130: Solenoid valve for pressurization
140:
150: Solenoid valve for decompression
Claims (3)
An air pressure sensor provided between the receiver tank and the large flow rate regulator for sensing a pressure value of air flowing from the receiver to the large flow rate regulator;
A pressure solenoid valve for selectively pressurizing the air pressure introduced into the receiver tank so as to regulate the air pressure introduced into the receiver tank to a specified pressure; And
And a pressure solenoid valve that is electrically connected to the atmospheric pressure sensor and the solenoid valve for pressurization. When the atmospheric pressure sensed by the atmospheric pressure sensor is lower than the set pressure, the pressure solenoid valve is operated to increase the atmospheric pressure value to the set pressure, And a control unit for operating the pressure solenoid valve to lower the atmospheric pressure value to a set pressure when the sensed atmospheric pressure value is higher than the set pressure. In the pressure regulating system for controlling the pressure in the large flow rate regulator,
A pressure sensing step of sensing a pressure value flowing into the large flow rate regulator from the receiver tank by an air pressure sensor;
The control unit activates the pressure solenoid valve to raise the pressure of the air toward the receiver tank to a value corresponding to the set pressure when the pressure value detected by the pressure sensor is lower than the set pressure, A pressure regulating step of operating the pressure solenoid valve by the control unit to reduce the pressure of the air to the receiver tank according to the set pressure when the pressure is higher than the set pressure; And
A decompression step of operating the decompression solenoid valve by the control unit to discharge the pressure in the receiver tank to the atmosphere so as to reduce the pressure in the receiver tank to less than the current pressure;
And a pressure regulating device for a large flow rate regulator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130112059A KR101549480B1 (en) | 2013-09-17 | 2013-09-17 | Flow regulator for pressure control method |
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|---|---|---|---|
| KR1020130112059A KR101549480B1 (en) | 2013-09-17 | 2013-09-17 | Flow regulator for pressure control method |
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| KR20150032060A KR20150032060A (en) | 2015-03-25 |
| KR101549480B1 true KR101549480B1 (en) | 2015-09-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3654128A1 (en) | 2018-11-15 | 2020-05-20 | Motonic Corporation | Pressure control method for high-pressure regulator to prevent internal leak, and high-pressure shut-off valve |
| KR20200091671A (en) | 2019-01-23 | 2020-07-31 | (주)모토닉 | Pressure control method to prevent internal leakage of high-voltage regulator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102165270B1 (en) * | 2019-09-23 | 2020-10-13 | (주)하이비젼시스템 | apparatus and Method for Supplying test Pressure using pressure chamber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012022702A (en) * | 2011-09-01 | 2012-02-02 | Tokyo Institute Of Technology | Pressure regulator and vibration isolation apparatus |
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- 2013-09-17 KR KR1020130112059A patent/KR101549480B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012022702A (en) * | 2011-09-01 | 2012-02-02 | Tokyo Institute Of Technology | Pressure regulator and vibration isolation apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3654128A1 (en) | 2018-11-15 | 2020-05-20 | Motonic Corporation | Pressure control method for high-pressure regulator to prevent internal leak, and high-pressure shut-off valve |
| US10962994B2 (en) | 2018-11-15 | 2021-03-30 | Motonic Corporation | Pressure control method for high-pressure regulator to prevent internal leak, and high-pressure shut-off valve |
| KR20200091671A (en) | 2019-01-23 | 2020-07-31 | (주)모토닉 | Pressure control method to prevent internal leakage of high-voltage regulator |
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| Publication number | Publication date |
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| KR20150032060A (en) | 2015-03-25 |
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