CN101975300A - Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port - Google Patents
Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port Download PDFInfo
- Publication number
- CN101975300A CN101975300A CN 201010292772 CN201010292772A CN101975300A CN 101975300 A CN101975300 A CN 101975300A CN 201010292772 CN201010292772 CN 201010292772 CN 201010292772 A CN201010292772 A CN 201010292772A CN 101975300 A CN101975300 A CN 101975300A
- Authority
- CN
- China
- Prior art keywords
- pressure
- voltage
- solenoid valve
- speed solenoid
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a method and a device for controlling a high-speed electromagnetic switch valve to adapt to pressure change at an oil supply port, which belongs to a control technology. The invention aims to provide a method and a device for adjusting a high-speed electromagnetic valve. The method is realized as follows: according to the pressure change of the oil supply port, the start voltage and maintaining voltage of the high-speed electromagnetic switch valve are adjusted by a pulse width modulation process by using the formulae V1'=V1-Af1(P) and V2'=V2-Bf2(P), so that the current characteristic curve and displacement characteristic curve approach to ideal curves, and the no-load flow characteristic and no-load pressure characteristic are kept identical to the no-load flow characteristic and no-load pressure characteristic under the rated oil supply port pressure. The device is composed of a pressure sensor (1), an angular displacement sensor (9), a voltage follower (2), an A/D converter (3), a controller (4), an optoelectronic isolator (5) and a drive unit (6), wherein the drive unit (6) is composed of a digital control power source, a digital control switch, a diode, a voltage-stabilizing tube and a resistor.
Description
Technical field: the present invention relates to a kind of method of controlling high-speed solenoid valve, relate in particular to a kind of according to the variation control high-speed solenoid valve unlatching of oil-feed port pressure and the method for closing motion; The invention still further relates to a kind of device of realizing this method.
Background technique: high-speed solenoid valve is the important control element of hydraulic system, its working principle is: when electromagnet cuts off the power supply, spool is moving linearly under fuel feeding-oil return differential pressure action, and oil-feed port and control mouthful oil circuit connection, oil-feed port and return opening oil circuit are closed, and the control mouth is a high pressure; When electromagnet was switched on, the electromagnetic push that armature produces made the spool reversing motion, and oil-feed port is closed, and the control mouth is a low pressure.At work, high-speed solenoid valve has only two kinds of working staties of open and close, adopts the method for pulsewidth modulation (being called for short PWM) to come it is controlled usually.
Yet, when utilizing high-speed solenoid valve control shaft orientation plunger variable pump at present, fuel system in generally adopting, because the pilot pressure of high-speed solenoid valve derives from axial axis plug variable displacement pump, the oil-feed port variation in pressure is very big to the performance impact of high-speed solenoid valve.In order to improve the control performance of high-speed solenoid valve, a technique known is to adopt two voltage methods that high-speed solenoid valve is driven, and the voltage ideal waveform figure that driver is supplied with high-speed solenoid valve is stair-stepping pair of voltage oscillogram of rectangle; Corresponding therewith, the firing current ideal waveform figure of high-speed solenoid valve electromagnet is the oscillogram of sharp wave shape.In open stage, make the high-speed solenoid valve quick pick-up, must guarantee that the electric current in the electromagnet is climbed to the required value of adhesive, adhesive only need maintain later on and keep the current value of keeping of adhesive to get final product.
Yet high-speed solenoid valve is in real work, because the pressure of oil-feed port changes, the influence that service behaviours such as spool action response time, displacement amount, travelling speed are stressed is very big.Even if adopted two voltages to drive, under different oil-feed port pressure condition, dynamic characteristics such as high-speed solenoid valve current of electromagnet characteristic, spool travel amount, and compare under static characteristic such as no load discharge characteristic, unloaded Pressure characteristics and the specified oil-feed port pressure, dynamic, the static characteristic of high-speed solenoid valve all can have greatly changed, and discreteness is very big, control performance is relatively poor.Therefore, how to guarantee high-speed solenoid valve adapt to the oil-feed port variation in pressure, guarantee high-speed solenoid valve under the different oil-feed port pressure conditions dynamically, static characteristic and specified oil-feed port pressure condition dynamic, static characteristic basically identical down, significant to the control performance of raising high-speed solenoid valve.
Summary of the invention: at the above-mentioned defective that exists in the prior art, the present invention aims to provide a kind of method that high-speed solenoid valve adapts to the oil-feed port variation in pressure of controlling, and utilizes this method can improve the ability that fast electromagnetic switch valve adapts to the oil-feed port variation in pressure.In addition, the present invention also aims to provide a kind of device of realizing this method.
To achieve these goals, the inventive method by the following technical solutions: according to the oil-feed port variation in pressure, according to the method for pulsewidth modulation, utilize formula V
1'=V
1-Af
1(P) and V
2'=V
2-Bf
2(P) to the cut-in voltage of high-speed solenoid valve with keep voltage adjustment, make the approaching corresponding ideal curve of current characteristics curve, displacement curve of high-speed solenoid valve, no load discharge characteristic, unloaded Pressure characteristics under the no load discharge characteristic of high-speed solenoid valve, unloaded Pressure characteristics and the specified oil-feed port pressure condition are consistent as far as possible.
In order to realize said method, device provided by the present invention by the following technical solutions: it comprises sensor and controller; Described sensor is pressure transducer and the angular displacement sensor that is connected with voltage follower separately, and voltage follower is connected with controller by A/D converter, and this controller is connected with high-speed solenoid valve by optoelectronic isolator, driver successively; Wherein, driver by high-voltage numerical control power supply and low pressure DCPS digitally controlled power source, the high-voltage numerical control switch that is connected with the high-voltage numerical control power supply, the low pressure numerical control switch that is connected with the low pressure DCPS digitally controlled power source, be connected on diode and voltage-stabiliser tube and the resistance between high-voltage numerical control switch and the low pressure numerical control output switching terminal successively, another diode that is connected between low pressure DCPS digitally controlled power source and the high-voltage numerical control output switching terminal constitutes.
Controller is provided with DLL (dynamic link library) and upper-position unit interface.
Compared with the prior art, the present invention has following beneficial effect:
1) the inventive method can make high-speed solenoid valve under the situation of oil-feed port variation in pressure, the placement property basically identical under the placement property of spool and the specified oil-feed port pressure condition, thereby the control performance of raising high-speed solenoid valve;
2) the inventive method can make high-speed solenoid valve under the situation of oil-feed port variation in pressure, and the current characteristics curve has energy-saving effect preferably near ideal waveform, can reduce the electromagnet heating;
3) the inventive method can make static characteristics such as the no load discharge characteristic of high-speed solenoid valve, unloaded Pressure characteristics, under the situation of oil-feed port variation in pressure with specified oil-feed port pressure condition under unloaded static characteristic be consistent substantially;
4) apparatus of the present invention have been reserved digital quantity interface, analog amount (A/D conversion) interface, DLL (dynamic link library), Computer Communications Interface etc., can satisfy the requirement that great majority are used;
5) apparatus of the present invention adopt software to realize pwm signal control, applicable to the job requirement of high-speed solenoid valve different frequency;
6) apparatus of the present invention can realize that cut-in voltage (high voltage) is worth, keeps the digital control of voltage (low voltage) value, therefore can satisfy the control requirement of most of high-speed solenoid valves;
7) the inventive method and device not only are applicable to the high-speed solenoid valve that the present invention proposes, and equally also are applicable to the high-speed solenoid valve of other structural type.
Description of drawings:
Fig. 1 is the structural representation of high-speed solenoid valve;
Fig. 2 is under specified oil-feed port pressure condition, the no load discharge characteristic curve of high-speed solenoid valve;
Fig. 3 be high-speed solenoid valve under specified oil-feed port pressure condition, unloaded pressure characteristic;
Fig. 4 is two voltage oscillograms;
Fig. 5 is the electric current ideal waveform figure of high-speed solenoid valve;
Fig. 6 is before adjusting under different oil-feed port pressure condition, to high-speed solenoid valve, current of electromagnet characteristic curve and spool travel performance diagram;
Fig. 7 is the no load discharge performance diagram before adjusting under different oil-feed port pressure condition, to high-speed solenoid valve;
Fig. 8 is the unloaded pressure characteristic figure before adjusting under different oil-feed port pressure condition, to high-speed solenoid valve;
Fig. 9 be under different oil-feed port pressure (be respectively rated pressure 0.25,0.5,0.75,1) situation, dutycycle is 0.5 o'clock, adopt the present invention that high-speed solenoid valve is adjusted after, the current of electromagnet performance diagram;
Figure 10 be under different oil-feed port pressure (be respectively rated pressure 0.25,0.5,0.75,1) situation, dutycycle is 0.5 o'clock, adopt the present invention that high-speed solenoid valve is adjusted after, the displacement curve figure of spool;
Figure 11 is under different oil-feed port pressure (be respectively rated pressure 0.25,0.5,0.75,1) situation, adopts the present invention that high-speed solenoid valve is carried out adjusted no load discharge performance diagram;
Figure 12 is under different oil-feed port pressure (be respectively rated pressure 0.25,0.5,0.75,1) situation, adopts the present invention that high-speed solenoid valve is carried out adjusted unloaded pressure characteristic figure;
Figure 13 is the structure principle chart of apparatus of the present invention;
Figure 14 is the structural representation of driver in apparatus of the present invention.
Among the figure: pressure transducer 1 voltage follower 2 A/D converters 3 controllers 4 optoelectronic isolators 5 drivers 6 upper-position unit interfaces 7 DLL (dynamic link library) 8 angular displacement sensors 9 high-voltage numerical control power supplys 10 high-voltage numerical control switches 11 diodes 12 voltage-stabiliser tubes 13 resistance 14 low pressure numerical control switches 15 low pressure DCPS digitally controlled power source 16 armature 17 electromagnet 18 valve bodies 19 spools 20
Embodiment:, before the invention will be further described with specific embodiment in conjunction with the accompanying drawings, be necessary earlier the structure of high-speed solenoid valve to be done simple an introduction in order to understand the present invention better:
As shown in Figure 1: high-speed solenoid valve by valve body 19, be fixed on the electromagnet 18 on this valve body, armature 17 and the spool 20 that is located in this valve body constitutes.When electromagnet 18 outage, spool 20 connect the oil circuit between oil-feed port and the control mouthful under fuel feeding-oil return differential pressure action to left movement and close oil-feed port and return opening between oil circuit, the control mouth is a high pressure; When electromagnet 18 energisings, armature 17 promotes spool and moves right, and oil-feed port is closed, and the control mouth is a low-pressure.At present, adopt two voltage methods that high-speed solenoid valve is driven usually, the voltage oscillogram that driver is supplied with high-speed solenoid valve is two voltage waveforms shown in Figure 4; Wherein, V
1, V
2Be respectively cut-in voltage and keep voltage.Electric current ideal waveform figure in the high-speed solenoid valve electromagnet as shown in Figure 5, corresponding to cut-in voltage V
1Firing current be I
1, corresponding to keeping voltage V
2The electric current of keeping be I
2
The inventive method is: according to the oil-feed port variation in pressure, according to the method for pulsewidth modulation, utilize formula V
1'=V
1-Af
1(P) and V
2'=V
2-Bf
2(P) to the cut-in voltage of high-speed solenoid valve with keep voltage adjustment, make the approaching corresponding ideal curve of current characteristics curve, displacement curve of high-speed solenoid valve, no load discharge characteristic, unloaded Pressure characteristics under the no load discharge characteristic of high-speed solenoid valve, unloaded Pressure characteristics and the specified oil-feed port pressure condition are consistent as far as possible.In above-mentioned formula, cut-in voltage value and keep magnitude of voltage and oil-feed port pressure is non-linear relation; V in the formula
1' be adjusted cut-in voltage value, V
2' for adjustedly keep magnitude of voltage, P is an oil-feed port pressure, the cut-in voltage in the formula is adjusted function f
1(P), cut-in voltage is adjusted coefficient A, is kept voltage regulation factor f
2(P), keeping voltage regulation factor B all needs the situations such as pressure, symbol load and operating conditions according to concrete high-speed solenoid valve oil-feed port to draw by experiment.
Fig. 6 and Fig. 9, Figure 10 are compared as can be seen: before adopting the inventive method to adjust, the current characteristics curve does not almost change, and is bigger with electric current ideal waveform difference among Fig. 5 yet, and that displacement curve has taken place is bigger discrete; After the present invention's adjustment, the electric current ideal waveform among current characteristics curve and Fig. 5 is more approaching, and bigger change, discrete less takes place displacement curve thereupon.This explanation: under the situation of oil-feed port variation in pressure, even if the firing current in the electromagnet 2 and keep electric current and remain unchanged substantially, bigger change also will take place with the variation of pressure in the characteristics such as action response time, displacement amount, travelling speed of opening spool 20; And by after the present invention's adjustment, even if pressure changes, cut-in voltage that also can be by changing magnet 2 and keep voltage and adjust the firing current in the electromagnet 2 and keep electric current, thereby guarantee action response time, displacement amount, the approaching perfect condition that designs of mobile fast reciprocity characteristic that spool 20 is opened, minimizing departs from.
Fig. 7, Fig. 8 and Figure 11, Figure 12 compared be not difficult to find out: before adopting the inventive method to adjust, high-speed solenoid valve under different oil-feed port pressure condition each no load discharge characteristic curve, each unloaded pressure characteristic is all inequality, discreteness is very big; Bigger with no load discharge characteristic curve, unloaded pressure characteristic (as Fig. 2, the shown in Figure 3) difference of high-speed solenoid valve under specified oil-feed port pressure condition.And after adopting the inventive method to adjust, no load discharge characteristic curve, unloaded pressure characteristic (as Fig. 2, shown in Figure 3) basically identical and the discreteness of high-speed solenoid valve under each no load discharge characteristic curve, each unloaded pressure characteristic and specified oil-feed port pressure condition under the different oil-feed port pressure condition is less.
Apparatus of the present invention such as Figure 13, shown in Figure 14: pressure transducer 1 is connected with voltage follower 2 respectively with angular displacement sensor 9, voltage follower 2 is connected with controller 4 by A/D converter 3, and this controller is connected with high-speed solenoid valve by optoelectronic isolator 5, driver 6 successively.Wherein, driver 6 by high-voltage numerical control power supply 10 and low pressure DCPS digitally controlled power source 16, the high-voltage numerical control switch 11 that is connected with high-voltage numerical control power supply 10, the low pressure numerical control switch 15 that is connected with low pressure DCPS digitally controlled power source 16, be connected on diode 12 and voltage-stabiliser tube 13 and resistance 14 between disconnected of high-voltage numerical control switch 11 and 15 outputs of low pressure numerical control switch successively, another diode 12 that is connected between low pressure DCPS digitally controlled power source 16 output terminals and high-voltage numerical control switch 11 output terminals constitutes.In order to enlarge adaptability, controller 4 is provided with DLL (dynamic link library) 8; For the ease of telecontrol, controller 4 is provided with upper-position unit interface 7.
Working principle: PWM3, the PWM4 signal by controller 4 output is respectively high-voltage numerical control power supply 10 after handling by optoelectronic isolator 5, low pressure DCPS digitally controlled power source 16 provides pulse signal, two described DCPS digitally controlled power source respectively according to the dutycycle of PWM3, PWM4 signal respectively to cut-in voltage with keep voltage and realize digital regulated; The PWM1 of controller 4 outputs, PWM2 signal are respectively high-voltage numerical control switch 11 after handling by optoelectronic isolator 5, low pressure numerical control switch 15 provides high-voltage numerical control pwm pulse signal and switch valve PWM control wave, and two described numerical control switches are distinguished the switching of control switch respectively according to the dutycycle of PWM1, PWM2 signal.The energy that diode 12, voltage-stabiliser tube 13 and resistance 14 constitute high-speed solenoid valve discharges the loop; The effect of another diode 12 is to realize cut-in voltage, the stack of keeping voltage and isolation.Pressure transducer 1 is converted into electrical signal with the oil-feed port pressure signal, the electrical signal that voltage follower 2 is sent this pressure transducer is converted into the voltage signal that is suitable for A/D converter 3, and this A/D converter is converted into digital quantity with the analog amount of voltage signal and gives controller 4; Other A/D passage is the spare interface for realizing that other control function is used.
Claims (3)
1. control the method that high-speed solenoid valve adapts to the oil-feed port variation in pressure for one kind, it is characterized in that:, utilize formula V according to the oil-feed port variation in pressure, according to the method for pulsewidth modulation
1'=V
1-Af
1(P) and V
2'=V
2-Bf
2(P) to the cut-in voltage of high-speed solenoid valve with keep voltage adjustment, make the approaching corresponding ideal curve of current characteristics curve, displacement curve of high-speed solenoid valve, no load discharge characteristic, unloaded Pressure characteristics under the no load discharge characteristic of high-speed solenoid valve, unloaded Pressure characteristics and the specified oil-feed port pressure condition are consistent as far as possible.
2. realize that the described control high-speed solenoid valve of claim 1 adapts to the device of the method for oil-feed port variation in pressure, comprises sensor and controller for one kind; It is characterized in that: described sensor is pressure transducer (1) and the angular displacement sensor (9) that is connected with voltage follower (2) separately, voltage follower (2) is connected with controller (4) by A/D converter (3), and this controller is connected with high-speed solenoid valve by optoelectronic isolator (5), driver (6) successively; Wherein, driver (6) by high-voltage numerical control power supply (10) and low pressure DCPS digitally controlled power source (16), the high-voltage numerical control switch (11) that is connected with high-voltage numerical control power supply (10), the low pressure numerical control switch (15) that is connected with low pressure DCPS digitally controlled power source (16), be connected on diode (12) and voltage-stabiliser tube (13) and the resistance (14) between high-voltage numerical control switch (11) and low pressure numerical control switch (15) output terminal successively, another diode (12) that is connected between low pressure DCPS digitally controlled power source (16) and high-voltage numerical control switch (11) output terminal constitutes.
3. device according to claim 2 is characterized in that: controller (4) is provided with DLL (dynamic link library) (8) and upper-position unit interface (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010292772 CN101975300A (en) | 2010-09-27 | 2010-09-27 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010292772 CN101975300A (en) | 2010-09-27 | 2010-09-27 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101975300A true CN101975300A (en) | 2011-02-16 |
Family
ID=43575203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010292772 Pending CN101975300A (en) | 2010-09-27 | 2010-09-27 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101975300A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923359A (en) * | 2010-08-23 | 2010-12-22 | 中国航空工业集团公司航空动力控制***研究所 | Quick and stable control device of gas pressure in variable volume cavity |
| CN102705065A (en) * | 2012-05-30 | 2012-10-03 | 长城汽车股份有限公司 | Pressure stabilizing device and cooling system of engine |
| CN102720876A (en) * | 2012-05-17 | 2012-10-10 | 浙江工业大学 | Soft match grinding method for eliminating flow characteristic dead zone of electro-hydraulic servo valve |
| CN104344055A (en) * | 2014-09-16 | 2015-02-11 | 三一重机有限公司 | Proportional electromagnetic valve driving method and system based on PWM (Pulse Width Modulation) |
| CN105298992A (en) * | 2015-11-26 | 2016-02-03 | 浙江大学 | Dynamic property testing system for high-speed switch valve based on digital variable pump pilot regulation and method thereof |
| CN105676690A (en) * | 2016-01-11 | 2016-06-15 | 浙江大学 | PWM-based intelligent solenoid valve control system and method thereof |
| EP3252361A1 (en) * | 2016-06-03 | 2017-12-06 | Intercable GmbH | Return assembly with a floating return valve and electromagnetic control |
| CN107882797A (en) * | 2017-11-08 | 2018-04-06 | 中机生产力促进中心 | Lateral open-type high-speed piezoelectric switch valve |
| CN108518520A (en) * | 2018-06-01 | 2018-09-11 | 钦州学院 | The twin voltage driving circuit of high-speed switch valve |
| CN110260020A (en) * | 2019-06-06 | 2019-09-20 | 苏州仁甬得物联科技有限公司 | A kind of PWM twin voltage precision valve control system |
| CN110954237A (en) * | 2019-11-22 | 2020-04-03 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
| CN111239341A (en) * | 2020-02-11 | 2020-06-05 | 北京知天地环境科技有限公司 | Intelligent stink smell distinguishing system |
| CN111399368A (en) * | 2020-03-26 | 2020-07-10 | 电子科技大学 | Redundancy technology of multi-path electromagnetic valve driving system |
| CN111834080A (en) * | 2020-04-24 | 2020-10-27 | 浙江工业大学 | Switching valve dynamic characteristic regulation and control method based on composite PWM |
| CN111828714A (en) * | 2020-01-07 | 2020-10-27 | 浙江工业大学 | Electromagnetic valve rapid movement driving method based on voltage pulse width modulation technology |
| CN112682561A (en) * | 2021-01-11 | 2021-04-20 | 福州大学 | Drive control system and control method of high-speed switch electromagnetic valve |
| CN114458813A (en) * | 2021-12-28 | 2022-05-10 | 南京航空航天大学 | Multi-voltage driving circuit and driving method applied to high-speed switch valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10198435A (en) * | 1997-01-07 | 1998-07-31 | Kayaba Ind Co Ltd | Hydraulic pressure controller |
| US20030208305A1 (en) * | 2002-05-03 | 2003-11-06 | Junk Kenneth W. | Method and apparatus for performing diagnostics in a control loop of a control valve |
| CN2658493Y (en) * | 2003-11-17 | 2004-11-24 | 石延平 | Electrohydaulic high-speed open-close valve |
| JP2008111475A (en) * | 2006-10-30 | 2008-05-15 | Hitachi Ltd | Electromagnetic control valve device |
| CN101400932A (en) * | 2006-02-10 | 2009-04-01 | 德雷瑟股份有限公司 | System and method for fluid regulation |
| DE102008028189A1 (en) * | 2008-06-12 | 2010-02-04 | Abb Technology Ag | Electropneumatic valve |
-
2010
- 2010-09-27 CN CN 201010292772 patent/CN101975300A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10198435A (en) * | 1997-01-07 | 1998-07-31 | Kayaba Ind Co Ltd | Hydraulic pressure controller |
| US20030208305A1 (en) * | 2002-05-03 | 2003-11-06 | Junk Kenneth W. | Method and apparatus for performing diagnostics in a control loop of a control valve |
| CN2658493Y (en) * | 2003-11-17 | 2004-11-24 | 石延平 | Electrohydaulic high-speed open-close valve |
| CN101400932A (en) * | 2006-02-10 | 2009-04-01 | 德雷瑟股份有限公司 | System and method for fluid regulation |
| JP2008111475A (en) * | 2006-10-30 | 2008-05-15 | Hitachi Ltd | Electromagnetic control valve device |
| DE102008028189A1 (en) * | 2008-06-12 | 2010-02-04 | Abb Technology Ag | Electropneumatic valve |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923359A (en) * | 2010-08-23 | 2010-12-22 | 中国航空工业集团公司航空动力控制***研究所 | Quick and stable control device of gas pressure in variable volume cavity |
| CN102720876A (en) * | 2012-05-17 | 2012-10-10 | 浙江工业大学 | Soft match grinding method for eliminating flow characteristic dead zone of electro-hydraulic servo valve |
| CN102720876B (en) * | 2012-05-17 | 2013-09-11 | 浙江工业大学 | Soft match grinding method for eliminating flow characteristic dead zone of electro-hydraulic servo valve |
| CN102705065A (en) * | 2012-05-30 | 2012-10-03 | 长城汽车股份有限公司 | Pressure stabilizing device and cooling system of engine |
| CN104344055A (en) * | 2014-09-16 | 2015-02-11 | 三一重机有限公司 | Proportional electromagnetic valve driving method and system based on PWM (Pulse Width Modulation) |
| CN105298992A (en) * | 2015-11-26 | 2016-02-03 | 浙江大学 | Dynamic property testing system for high-speed switch valve based on digital variable pump pilot regulation and method thereof |
| CN105676690A (en) * | 2016-01-11 | 2016-06-15 | 浙江大学 | PWM-based intelligent solenoid valve control system and method thereof |
| CN105676690B (en) * | 2016-01-11 | 2018-06-19 | 浙江大学 | A kind of solenoid valve intelligence control system and its method based on voltage PWM |
| EP3252361A1 (en) * | 2016-06-03 | 2017-12-06 | Intercable GmbH | Return assembly with a floating return valve and electromagnetic control |
| CN107882797A (en) * | 2017-11-08 | 2018-04-06 | 中机生产力促进中心 | Lateral open-type high-speed piezoelectric switch valve |
| CN107882797B (en) * | 2017-11-08 | 2019-08-06 | 中机生产力促进中心 | Lateral open-type high-speed piezoelectric switch valve |
| CN108518520A (en) * | 2018-06-01 | 2018-09-11 | 钦州学院 | The twin voltage driving circuit of high-speed switch valve |
| CN110260020A (en) * | 2019-06-06 | 2019-09-20 | 苏州仁甬得物联科技有限公司 | A kind of PWM twin voltage precision valve control system |
| CN110260020B (en) * | 2019-06-06 | 2020-08-04 | 苏州仁甬得物联科技有限公司 | PWM dual-voltage precise valve control system |
| CN110954237A (en) * | 2019-11-22 | 2020-04-03 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
| CN111828714A (en) * | 2020-01-07 | 2020-10-27 | 浙江工业大学 | Electromagnetic valve rapid movement driving method based on voltage pulse width modulation technology |
| CN111828714B (en) * | 2020-01-07 | 2022-03-11 | 浙江工业大学 | Electromagnetic valve rapid movement driving method based on voltage pulse width modulation technology |
| CN111239341A (en) * | 2020-02-11 | 2020-06-05 | 北京知天地环境科技有限公司 | Intelligent stink smell distinguishing system |
| CN111399368A (en) * | 2020-03-26 | 2020-07-10 | 电子科技大学 | Redundancy technology of multi-path electromagnetic valve driving system |
| CN111834080A (en) * | 2020-04-24 | 2020-10-27 | 浙江工业大学 | Switching valve dynamic characteristic regulation and control method based on composite PWM |
| CN111834080B (en) * | 2020-04-24 | 2022-03-29 | 浙江工业大学 | Switching valve dynamic characteristic regulation and control method based on composite PWM |
| CN112682561A (en) * | 2021-01-11 | 2021-04-20 | 福州大学 | Drive control system and control method of high-speed switch electromagnetic valve |
| CN114458813A (en) * | 2021-12-28 | 2022-05-10 | 南京航空航天大学 | Multi-voltage driving circuit and driving method applied to high-speed switch valve |
| CN114458813B (en) * | 2021-12-28 | 2022-10-21 | 南京航空航天大学 | Multi-voltage driving circuit and driving method applied to high-speed switch valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975300A (en) | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port | |
| CN105736160B (en) | Driving device of fuel injection device | |
| CN101477870B (en) | Generation method and apparatus for electromagnetic valve driving current | |
| CN204533737U (en) | For the electromagnetic actuator device of solenoid valve | |
| CN106838432B (en) | A kind of electronically controlled unit pump driving circuit for electromagnetic valve and its control method | |
| CN102425516B (en) | Multi-valve oil spraying system and multi-valve oil spraying method | |
| CN1317501C (en) | Electromagnetic valve drive circuit for engine | |
| CN102518523B (en) | Control device for oil injection of high pressure common rail diesel engine | |
| CN105041535A (en) | High-performance driving device used for fuel injector electromagnetic valve | |
| CN102904503B (en) | A kind of pulse width modulation control method of switched reluctance machines and system | |
| CN104747332B (en) | A kind of drive circuit of diesel electric-controlled common-rail injector | |
| CN202091047U (en) | High-voltage suspension electromagnetic valve driving circuit based on IR2110 technology | |
| CN102147628A (en) | Minimum temperature control for electromechanical actuator | |
| CN103595228A (en) | Digital control method and system for IGBT | |
| CN105386912A (en) | Piezoelectric oil injector driving device capable of being adjusted online | |
| CN109340435B (en) | High-precision error correction method for multi-element low-pressure gradient proportional solenoid valve | |
| CN203115247U (en) | ABS electromagnetic valve control circuit based on high-frequency PWM | |
| CN101806255B (en) | Method and system for driving electromagnetic valve of diesel engine | |
| CN201366389Y (en) | Continuous variable-rate spraying device based on pulse width modulation | |
| CN108131487B (en) | A kind of electromagnetic valve switch control system of type multimode electromagnetic valve actuator | |
| CN1856640B (en) | Power supply and control method for injector driver module | |
| CN206191009U (en) | High -speed solenoid valve drive circuit | |
| CN204493047U (en) | A kind of drive circuit of diesel electric-controlled common-rail injector | |
| CN209800148U (en) | high-pressure common rail oil sprayer driving circuit | |
| CN204851560U (en) | Positive flow control electric proportional pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110216 |