CN104515887B - HIL rack high pressure MeUn valve current acquisition methods - Google Patents
HIL rack high pressure MeUn valve current acquisition methods Download PDFInfo
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- CN104515887B CN104515887B CN201310455208.8A CN201310455208A CN104515887B CN 104515887 B CN104515887 B CN 104515887B CN 201310455208 A CN201310455208 A CN 201310455208A CN 104515887 B CN104515887 B CN 104515887B
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- Prior art keywords
- valve
- meun
- oil pump
- metering units
- hil
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Abstract
The invention discloses a kind of HIL racks high pressure MeUn valve current acquisition methods, including：MeUn valve characteristic parameters are measured by EFS, are established with MeUn valve drive signal duty ratios as X values, battery tension is Y value, and MeUn valve feedback currents are the statistical form of Z values；The statistical form is imported in HIL fuel metering unit valve models；The duty ratio and battery tension that HIL emulation test systems acquire MeUn valve drive signals by I/O boards obtain the average value of MeUn valve feedback currents according to statistical form described in the MeUn valve pattern queries in HIL.The acquisition method of the present invention avoids complicated calculating, reduces the complexity of HIL simulation models and run time can ensure that the validity of data.
Description
Technical field
The present invention relates to vehicle electric fields, more particularly to a kind of HIL（Hardware in loop）Rack high pressure MeUn（Oil pump meter
Measure unit）Valve current acquisition method.
Background technology
On-board engine electronic control unit（ECU）After design, need to carry out in case of a closed loop in all directions
System Functional Test.In order to shorten the development cycle, development cost is saved, using hardware in loop（HIL）Test, which is one kind, efficacious prescriptions
Formula.
In diesel oil high-pressure common rail engine, high-pressure oil pump is for improving fuel pressure, to realize high-pressure injection, improves
Fuel atomization effect makes fuel oil fully burn.MeUn valves in high-pressure oil pump are for controlling oil inlet quantity and regurgitant volume, control oil pump
Plunger is completed jointly with rail pressure sensor to rail to the fuel delivery of common rail pipe to meet the pressure demand of common rail system setting
The closed-loop control of pressure.
The high-pressure oil pump MeUn valve electric currents acquired in HIL are used to calculate the rail pressure and fuel consumption of oil piping system, are
Ensure to calculate accuracy, the precision of acquired Meun valves electric current required.
The way of tradition acquisition Meun valve electric currents：MeUn is acquired by AD converter in real time when carrying out HIL emulation testings
The feedback current of valve, by the average value that MeUn valve feedback currents are calculated.Disadvantage is as follows：
1, the formula of calculating current average value（Such as）Logic is complicated, leads to the complexity of model emulation
High, long operational time.
2, the execution period of MeUn valves feedback current and HIL emulate the period and have fixed, and relatively, so one
Sampled point is less in a Meun valves current cycle（Such as the MeUn valve feedback current periods are 5ms, HIL emulation cycles are 1ms, most
5 points can only mostly be acquired）；
MeUn Real-time Feedback current values change greatly（Such as saw-tooth wave type）, the MeUn valve feedback currents that are calculated it is flat
Mean value error is big, cannot reflect true current values.
Invention content
The technical problem to be solved in the present invention is to provide a kind of simple high-precision HIL racks high pressure MeUn valve electric currents of model
Acquisition method.
In order to solve the above technical problems, the HIL rack high pressure MeUn valve current acquisition methods of the present invention, including：
One, pass through EFS（Oil pump experimental bench）MeUn valve characteristic parameters are measured, foundation is with MeUn valve drive signal duty ratios
X values, battery tension are Y value, and MeUn valve feedback currents are the statistical form of Z values；X values and the Y value crossover location in statistical form are Z
Value；
Two, the statistical form is imported in HIL fuel metering unit valve models；
Three, HIL emulation test systems acquire the duty ratio and battery tension of MeUn valve drive signals by I/O boards,
According to statistical form described in the MeUn valve pattern queries in HIL fuel metering unit valve models, the flat of MeUn valve feedback currents is obtained
Mean value.
Wherein, in step 1, EFS measures MeUn characterisitic parameters and uses：
1）Fixed MeUn valve drive signal duty ratios are 4%, and from 7500mv to 15500mv, step-length is setting battery tension
500mv changes, and acquires the numerical value of each point MeUn valve feedback currents respectively；
2）Increase MeUn valve drive signal duty ratios with 2% step-length, repeats step 1）Test, until MeUn valves drive believe
Number duty ratio is to 74%.
The HIL rack high pressure MeUn valves current acquisition methods of the present invention only need to acquire by I O board card in HIL racks
After MeUn valve drive signals duty ratio and battery tension, then inquires and statistical form is obtained by EFS measurements MeUn valve characteristic parameters
It can obtain the feedback current of MeUn valves.Complicated calculating is avoided, when reducing complexity and the operation of HIL simulation models
Between.The statistical form data come from oil pump experimental bench measured result, and EFS testing stands are the professional racks of oil piping system test, really
The validity of data is protected.
Description of the drawings
The present invention is described in further detail with specific implementation mode below in conjunction with the accompanying drawings：
Fig. 1 is the calculation process schematic diagram of one embodiment of the invention.
Specific implementation mode
As shown in Figure 1, one embodiment of HIL rack high pressure MeUn valves current acquisition method of the present invention, including：
One, MeUn valve characteristic parameters are measured by EFS, established with MeUn valve drive signal duty ratios as X values（Row）, store
Cell voltage is Y value（Perpendicular row）, MeUn valve feedback currents are the statistical form of Z values, X values（Row）And Y value（Perpendicular row）In statistical form
Middle crossover location is Z values, as shown in table 1：
Table 1
Wherein, EFS measures MeUn characterisitic parameters and uses：
1）Fixed MeUn valve drive signal duty ratios are 4%, and from 7500mv to 15500mv, step-length is setting battery tension
500mv changes, and acquires the numerical value of each point MeUn valve feedback currents respectively；
2）Increase MeUn valve drive signal duty ratios with 2% step-length, repeats step 1）Test, until MeUn valves drive believe
Number duty ratio is to 74%.
Two, the statistical form is imported in HIL fuel metering unit valve models；
Three, HIL emulation test systems acquire the duty ratio and battery tension of MeUn valve drive signals by I/O boards,
According to statistical form described in the MeUn valve pattern queries in HIL fuel metering unit valve models, the flat of MeUn valve feedback currents is obtained
Mean value.
Above by specific implementation mode and embodiment, invention is explained in detail, but these are not composition pair
The limitation of the present invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Into these also should be regarded as protection scope of the present invention.
Claims (2)
1. hardware in loop rack high-pressure oil pump metering units valve current acquisition method, characterized in that including：
One, oil pump metering units valve characteristic parameter is measured by oil pump experimental bench, established with oil pump metering units valve drive signal
Duty ratio is X values, and battery tension is Y value, and oil pump metering units valve feedback current is the statistical form of Z values；
Two, the statistical form is imported in hardware in loop fuel metering unit valve model；
Three, hardware-in-the-loop test system acquires the duty ratio and storage of oil pump metering units valve drive signal by I/O boards
Cell voltage, according to statistical form described in the oil pump metering units valve pattern query in hardware in loop fuel metering unit valve model,
Obtain oil pump metering units valve feedback current.
2. hardware in loop rack high-pressure oil pump metering units valve current acquisition method as described in claim 1, it is characterized in that：
In step 1, oil pump experimental bench measures oil pump metering units valve characteristic parameter and uses：
1）Fixing oil pump-metered unit valve drive signal duty cycle is 4%, and setting battery tension is from 7500mv to 15500mv, step
A length of 500mv variations, acquire the numerical value of each oil pump metering units valve feedback current respectively；
2）Increase oil pump metering units valve drive signal duty ratio with 2% step-length, repeats step 1）Test, until oil pump measure
Unit valve drive signal duty cycle is to 74%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310455208.8A CN104515887B (en) | 2013-09-29 | 2013-09-29 | HIL rack high pressure MeUn valve current acquisition methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310455208.8A CN104515887B (en) | 2013-09-29 | 2013-09-29 | HIL rack high pressure MeUn valve current acquisition methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104515887A CN104515887A (en) | 2015-04-15 |
| CN104515887B true CN104515887B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310455208.8A Expired - Fee Related CN104515887B (en) | 2013-09-29 | 2013-09-29 | HIL rack high pressure MeUn valve current acquisition methods |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113047975B (en) * | 2021-03-23 | 2023-06-09 | 无锡威孚高科技集团股份有限公司 | Control method for electric control pressure relief valve in diesel engine fuel system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000110927A (en) * | 1998-10-06 | 2000-04-18 | Fuji Heavy Ind Ltd | Control device for continuously variable transmission |
| DE102007050859A1 (en) * | 2007-05-18 | 2008-11-20 | Mitsubishi Electric Corp. | Control device for an internal combustion engine |
| CN101813029A (en) * | 2008-11-17 | 2010-08-25 | 通用汽车环球科技运作公司 | Solenoid current control with direct forward prediction and iterative backward state estimation |
| CN102135044A (en) * | 2011-01-04 | 2011-07-27 | 潍柴动力股份有限公司 | Method, device and system used for controlling oil injection pressure of common rail system |
| CN102374055A (en) * | 2011-09-22 | 2012-03-14 | 中国汽车技术研究中心 | Engine rail press precontrol and feedback control device as well as control system and control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4571962B2 (en) * | 2007-08-03 | 2010-10-27 | 本田技研工業株式会社 | Plant control equipment |
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2013
- 2013-09-29 CN CN201310455208.8A patent/CN104515887B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000110927A (en) * | 1998-10-06 | 2000-04-18 | Fuji Heavy Ind Ltd | Control device for continuously variable transmission |
| DE102007050859A1 (en) * | 2007-05-18 | 2008-11-20 | Mitsubishi Electric Corp. | Control device for an internal combustion engine |
| CN101813029A (en) * | 2008-11-17 | 2010-08-25 | 通用汽车环球科技运作公司 | Solenoid current control with direct forward prediction and iterative backward state estimation |
| CN102135044A (en) * | 2011-01-04 | 2011-07-27 | 潍柴动力股份有限公司 | Method, device and system used for controlling oil injection pressure of common rail system |
| CN102374055A (en) * | 2011-09-22 | 2012-03-14 | 中国汽车技术研究中心 | Engine rail press precontrol and feedback control device as well as control system and control method |
Non-Patent Citations (2)
| Title |
|---|
| 基于仿真的电控柴油机ECU热优化设计;徐权奎 等;《内燃机工程》;20080430;第29卷(第2期);31-36 * |
| 新型共轨蓄压式电控燃油系统及32位ECU;谢辉 等;《汽车工程》;20010131;第23卷(第1期);44-48、63 * |
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| CN104515887A (en) | 2015-04-15 |
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