CN107026584A - Method for being charged and discharged to piezoelectric-actuator - Google Patents
Method for being charged and discharged to piezoelectric-actuator Download PDFInfo
- Publication number
- CN107026584A CN107026584A CN201710063193.9A CN201710063193A CN107026584A CN 107026584 A CN107026584 A CN 107026584A CN 201710063193 A CN201710063193 A CN 201710063193A CN 107026584 A CN107026584 A CN 107026584A
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- CN
- China
- Prior art keywords
- charging
- piezoelectric
- pulse
- value
- duration
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000007599 discharging Methods 0.000 claims description 9
- 241000512259 Ascophyllum nodosum Species 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/06—Drive circuits; Control arrangements or methods
Abstract
The present invention relates to the method for being charged and discharged to piezoelectric-actuator, wherein measure the piezoelectric voltage applied at piezoelectric-actuator, measured piezoelectric voltage is compared with two adjustable charge or discharge limiting values, in the value less than or equal to the first charging limit value, charging pulse with the first amplitude and duration is applied at the element, when more than the first charging limit value and the value less than the second charging limit value, charging pulse with the second amplitude and duration is applied at the element, or in the value more than or equal to the first electric discharge limiting value, discharge pulse with the first amplitude and duration is applied at the element, in the value for limiting value of being discharged less than the first electric discharge limiting value and more than second, discharge pulse with the second amplitude and duration is applied at the element, wherein second charging and/or discharge pulse amplitude and/or duration are less than or are shorter than the first charging and/or discharge pulse amplitude or duration.
Description
Technical field
Piezoelectric-actuator is especially in valve（Ventilen）, used in such as Fuelinjection nozzle, because the piezoelectricity
Executive component can be responded quickly（ansprechen）And apply big power.But, the piezoelectric-actuator
Applied to the pressure-reducing valve in the pressure regulation spectrum for gas-powered formula motor vehicles, such as this is in DE 10 2,005 019 404
Described in A1.
Background technology
Applied to piezoelectricity adjustable type CNG pressure-reducing valves（compressed natural gas（Compressed natural gas））In feelings
Under condition, the voltage at piezoelectric-actuator allows for accurately and special with the thick-and-thin time in wide voltage range
Property is adjusted.Because piezoelectric-actuator（Piezo-Aktor）First it is approximate in showed as capacitor, so in piezoelectricity
In the case of small voltage at executive component, the small energy being transferred on piezoelectric-actuator already leads to big voltage and become
Change, and the big energy on piezoelectric-actuator to be transferred to is needed in the case of high-tension at the piezoelectric-actuator
（Energiemengen）, to cause the noticeable voltage change at piezoelectric-actuator.It is attached in the way of becoming complexity
Plus be（Erschwerend kommt hinzu）, connected（geschalteter）The inherent characteristic of power output stage with
Development trend is reverse.
If energy bag（Energiepakete）It is chosen sufficiently small for low pressure piezoelectric voltage, then charging process exists
Inadequately long lasting for or energy bag even is no longer enough to overcome EMV measures, and charges in the case of high voltage
Electric current fades away from certain voltage.If selecting energy bag sufficiently large for high voltage, then the energy bag
It is too big in the case of small voltage for enough resolution ratio.
Although using analog electronic equipment the size of energy bag can be made to be matched with the voltage of piezoelectric-actuator so that with
Independently there is nearly constant charging current in voltage.But this needs not inappreciable component to expend.If microcontroller
Device calculates each individually pulse, then may also reach same situation.Because being used usually using relatively high switching frequency
Charged and discharged in the piezoelectric-actuator for pressure or fuel quantity regulation, but this means for microcontroller
Significant load.
The content of the invention
The task of the present invention be make to realize without big consuming in the case where using piezoelectric-actuator it is reported as precisely as possible
Pressure regulation.
By solving the task according to the method for being used to be charged and discharged piezoelectric-actuator of claim 1.
Explanation is advantageously improved scheme in the dependent claims.
Therefore, in the method for being charged and discharged to piezoelectric-actuator, measurement first is applied to piezoelectricity and performs member
Piezoelectric voltage at part, and then by measured piezoelectric voltage and two adjustable charge or discharge limiting value ratios
Compared with.In order to be charged to piezoelectric-actuator, in the case of less than or equal to the piezoelectric voltage value of the first charging limit value, have
Adjustable first amplitude and the charging pulse of the first duration are applied at piezoelectric-actuator, and more than first
Charging limit value and less than the second larger charging limit value piezoelectric voltage value in the case of, shaken with adjustable second
Width and the charging pulse of the second duration are applied at piezoelectric-actuator, wherein the second charging pulse amplitude and/or
Two charge pulse durations are less than the first charging pulse amplitude or are shorter than the first charge pulse duration.
In order to discharge, in the case of more than or equal to the piezoelectric voltage value of the first electric discharge limiting value, with adjustable
First amplitude and the discharge pulse of the first duration are applied at piezoelectric-actuator, and less than the first electric discharge limit
In the case of the piezoelectric voltage value of value and limiting value of being discharged more than less second, with adjustable second amplitude and second
The discharge pulse of duration is applied at piezoelectric-actuator, wherein the second discharge pulse amplitude and/or the second electric discharge arteries and veins
The duration is rushed less than the first discharge pulse amplitude or was shorter than for the first discharge pulse duration.
Because existing in the routine continually run is so switched（stecken）Very small calculating expends, institute
With can use unusual low-power so as to cheap microcontroller.Using according to the present invention method work adjuster this
Outer offer advantages below, until can also use relatively large pulse close to target voltage, and can be when possible the latest
Between point be switched to reach less impulse magnitude necessary to target voltage resolution ratio, and be that this not may require that significant meter
Calculate and expend.
It is advantageously improved in one kind of the method according to the present invention in scheme, after previously given time interval
（nach vorgegebenen zeitlichen Abständen）, it is charged and discharged limiting value and/or is charged and discharged pulse
Amplitude and/or it is charged and discharged the function that the pulse duration is confirmed as measured piezoelectric voltage and target voltage.
In another improvement project, it is charged and discharged limiting value and/or is charged and discharged pulse amplitude and/or charging and puts
Pulse duration time is confirmed as the function of other specification, and one of other specification can be temperature.
By determining impulse magnitude and the limit and it is thus determined that be conveyed to the energy of piezoelectric-actuator, power can be made
Demand is optimally matched with voltage situation.
Method according to the present invention can be used to be charged and discharged piezoelectric-actuator in a particularly advantageous manner, be used to
Operate the valve of pressure-reducing valve.
Brief description of the drawings
The step of figure shows the method and its improvement project according to the present invention in open-and-shut mode.Here,
Fig. 1 shows the method according to the present invention for being charged to piezoelectric-actuator,
Fig. 2 shows the method according to the present invention for discharging piezoelectric-actuator,
Fig. 3 is shown for calculating the method for being charged and discharged pulse from measured piezoelectric voltage and if necessary other specification.
Embodiment
In Fig. 1, herein small or big charging pulse it is meant that small or big energy is transmitted from energy source
To piezoelectric-actuator, the energy source is for example via dc-dc and the manipulation for the piezoelectric-actuator to be supplied
Circuit is connected.Energy can be adjusted via charging pulse amplitude and/or charge pulse duration t_glp, t_klp herein.
Figure 2 illustrates the methods described for discharging piezoelectric-actuator.Energy herein can be via electric discharge arteries and veins
Rush amplitude and/or discharge pulse duration t_kelp, t_gelp is adjusted.
Schematically show in figure 3：First charging limit value Usk and the second charging limit value Uk, the first electric discharge limit
The electric discharge limiting value Ug of value Usg and second and charge pulse duration t_glp, t_klp and discharge pulse duration t_
Kelp, t_gelp and the volume being applied at the piezoelectric voltage UPiezo at piezoelectric-actuator and to be measured and piezoelectric-actuator
Voltage Usollwert is determined about ground and relevant with other possible parameters, such as temperature is determined.
It is described with determining in relative rarity（selten）（Per every about 2ms）Carried out in the routine of operation, wherein can
To be extracted from characteristic value form or calculate described value by means of the function programmed.
Claims (5)
1. the method for being charged and discharged to piezoelectric-actuator, wherein measuring the pressure applied at the piezoelectric-actuator
Piezoelectric voltage（UPiezo）,
By the measured piezoelectric voltage（UPiezo）With two adjustable charging limit values（Usk、Uk）Or discharge electrode
Limit value（Usg、Ug）Compare,
Less than or equal to the first charging limit value（Usk）Piezoelectric voltage（UPiezo）In the case of value, with adjustable
First amplitude and the first duration（t_glp）Charging pulse be applied at the piezoelectric-actuator, and more than
The first charging limit value（Usk）And less than the second larger charging limit value（Uk）Piezoelectric voltage（UPiezo）Value
In the case of, with adjustable second amplitude and the second duration（t_klp）Charging pulse be applied to the piezoelectricity and hold
At units, wherein the second charging pulse amplitude and/or second charge pulse duration（t_klp）Less than described
First charging pulse amplitude is shorter than first charge pulse duration（t_glp）,
Or more than or equal to the first electric discharge limiting value（Usg）Piezoelectric voltage（UPiezo）In the case of value, with adjustable
The first whole amplitude and the first duration（t_gelp）Discharge pulse be applied at the piezoelectric-actuator, and
Less than the described first electric discharge limiting value（Usg）And more than the less second electric discharge limiting value（Ug）Piezoelectric voltage value situation
Under, with adjustable second amplitude and the second duration（t_kelp）Discharge pulse be applied to the piezoelectricity and perform member
At part, wherein the second discharge pulse amplitude and/or the second discharge pulse duration（t_kelp）Less than described
One discharge pulse amplitude is shorter than the first discharge pulse duration（t_gelp）.
2. in accordance with the method for claim 1, wherein after previously given time interval, the charging and discharging limit
Value（Usk、Uk、Usg、Usg）And/or the charging and discharging pulse amplitude and/or the charging and discharging pulse duration
（t_glp、t_klp、t_gelp、t_kelp）It is confirmed as the measured piezoelectric voltage（UPiezo）Function.
3. in accordance with the method for claim 2, wherein the charging and discharging limiting value（Usk、Uk、Usg、Usg）And/or institute
State charging and discharging pulse amplitude and/or the charging and discharging pulse duration（t_glp、t_klp、t_gelp、t_
kelp）It is confirmed as the function of other specification.
4. in accordance with the method for claim 3, one of other specification is temperature.
5. according to the method described in one of the claims, wherein the charging and discharging of the piezoelectric-actuator are used for
Operate the valve of pressure-reducing valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016201435.8 | 2016-02-01 | ||
| DE102016201435.8A DE102016201435B4 (en) | 2016-02-01 | 2016-02-01 | Procedure for charging and discharging a piezo actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107026584A true CN107026584A (en) | 2017-08-08 |
| CN107026584B CN107026584B (en) | 2019-07-16 |
Family
ID=59327976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710063193.9A Active CN107026584B (en) | 2016-02-01 | 2017-02-03 | Method for being charged and discharged to piezoelectric-actuator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107026584B (en) |
| DE (1) | DE102016201435B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6981173B2 (en) | 2017-10-24 | 2021-12-15 | 株式会社デンソー | Fuel injection control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521934A (en) * | 2003-02-12 | 2004-08-18 | 北京迈特科创技术有限公司 | Optimization method and equipment for output power of vibrating driver, and product made from the same method |
| EP1772952A1 (en) * | 2005-10-06 | 2007-04-11 | Delphi Technologies, Inc. | Injector control method |
| CN101253319A (en) * | 2005-06-07 | 2008-08-27 | 西门子威迪欧汽车电子股份公司 | Method and device for controlling a capacitive load |
| CN103715940A (en) * | 2010-03-19 | 2014-04-09 | 佳能株式会社 | Driving unit of a vibration-type actuator |
| WO2015112028A1 (en) * | 2014-01-22 | 2015-07-30 | Auckland Uniservices Limited | Pliable capacitive structure apparatus and methods |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10016476A1 (en) * | 2000-04-01 | 2001-12-06 | Bosch Gmbh Robert | Diagnosing voltage control for piezoelectric actuator for injection valve involves specifying tolerance band taking into account system and injection conditions |
| JP4161635B2 (en) * | 2002-08-19 | 2008-10-08 | 株式会社デンソー | Fuel injection control device |
| DE102005019404A1 (en) | 2005-04-25 | 2006-10-26 | Korn, Reinhard, Dipl.-Ing. | Safety platform is powered by gas springs mounted in upper area of scissor lift with further lift spring in lower area to assist lifting action |
| JP4702076B2 (en) * | 2006-01-31 | 2011-06-15 | 株式会社デンソー | Piezo injector control device |
| JP4743138B2 (en) * | 2007-03-05 | 2011-08-10 | 株式会社デンソー | Fuel injection device |
| FR2990998B1 (en) * | 2012-05-23 | 2016-02-26 | Continental Automotive France | METHOD FOR CONTROLLING AT LEAST ONE PIEZOELECTRIC FUEL INJECTOR ACTUATOR OF AN INTERNAL COMBUSTION ENGINE |
-
2016
- 2016-02-01 DE DE102016201435.8A patent/DE102016201435B4/en active Active
-
2017
- 2017-02-03 CN CN201710063193.9A patent/CN107026584B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521934A (en) * | 2003-02-12 | 2004-08-18 | 北京迈特科创技术有限公司 | Optimization method and equipment for output power of vibrating driver, and product made from the same method |
| CN101253319A (en) * | 2005-06-07 | 2008-08-27 | 西门子威迪欧汽车电子股份公司 | Method and device for controlling a capacitive load |
| EP1772952A1 (en) * | 2005-10-06 | 2007-04-11 | Delphi Technologies, Inc. | Injector control method |
| CN103715940A (en) * | 2010-03-19 | 2014-04-09 | 佳能株式会社 | Driving unit of a vibration-type actuator |
| WO2015112028A1 (en) * | 2014-01-22 | 2015-07-30 | Auckland Uniservices Limited | Pliable capacitive structure apparatus and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107026584B (en) | 2019-07-16 |
| DE102016201435B4 (en) | 2022-02-24 |
| DE102016201435A1 (en) | 2017-08-03 |
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Effective date of registration: 20230421 Address after: Regensburg, Germany Patentee after: WeiPai Technology Co.,Ltd. Address before: Hannover Patentee before: CONTINENTAL AUTOMOTIVE GmbH |