CN106852102A - One kind improves the jamproof pcb board of electric boosting steering system and earthing method - Google Patents
One kind improves the jamproof pcb board of electric boosting steering system and earthing method Download PDFInfo
- Publication number
- CN106852102A CN106852102A CN201710010221.0A CN201710010221A CN106852102A CN 106852102 A CN106852102 A CN 106852102A CN 201710010221 A CN201710010221 A CN 201710010221A CN 106852102 A CN106852102 A CN 106852102A
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- module
- power
- power model
- pcb board
- ground
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0064—Earth or grounding circuit
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Conversion In General (AREA)
- Structure Of Printed Boards (AREA)
- Power Steering Mechanism (AREA)
Abstract
The jamproof pcb board of electric boosting steering system and earthing method are improved the invention discloses one kind, power model is disposed with the pcb board, power module, MCU control module, monitoring module and pre- driving module, the power model is connected with external cell power supply, it is connected by holding wire between the power model and pre- driving module, common ground line is provided with the power model, the common ground line carries out segmentation at sampling resistor R1 and forms a plurality of branch's ground wire, branch's ground wire connects supply power module respectively, MCU control module, monitoring module and pre- driving module.The present invention breaks through traditional earthing method, Power Groud and other signal processing modules are shared into a ground, common impedance coupled problem is not considered, then ground is divided again in the certain point of power model, by this kind for the treatment of of mode, on the one hand make the segmentation on ground simpler easy, control of the pre- driving module to power model on the other hand can be made more reliable and more stable.
Description
Technical field
The present invention relates to a kind of electronic technology of electric boosting steering system, more particularly to a kind of raising electric power steering
The pcb board and earthing method of system rejection to disturbance.
Background technology
With the raising of automotive circuit diagram, increasing electronic component has been appeared in car, such as many in automobile
Media entertainment, bluetooth communication, satellite fix, air bag, power-assisted steering etc., and automobile EMC designs are one in hardware design
Difficult point, because these electronic components are likely to produce interference signal to external world, or itself is because of excessively sensitive, EMC performances
It is bad and disturbed by other parts, disabler is in turn resulted in, gently then cause driving inconvenience, heavy then result in an automobile accident, danger
And life security.The technical staff for being now subjected to the puzzlement of EMC problems is more and more, and as product is to multifunction, function high
Change and high speed development, solve the problems, such as that the difficulty of EMC is also growing day by day.
When EMC is solved the problems, such as, in addition to the selection of component and circuit design, good PCB floor file is simultaneous in electromagnetism
It is also a very important factor to be installed with counting.It may be said that PCB floor file is the key for solving the problems, such as EMC --- good floor file
Backflow area can be effectively reduced, allows return flow path to be flowed according to the direction of design, so as to improve the EMC performances of product；It is bad
Floor file such as reference planes can be caused crack, reference planes layer conversion occur, backflow area is the problems such as increase and then reduces and produces
The EMC performances of product.
In EPS product PCB drawing process, each intermodule of floor file aspect is a kind of very universal side using single-point grounding
Formula, is the schematic diagram of single-point grounding referring to accompanying drawing 1.Only one of which physical points are defined as being grounded reference point, all needs in circuit
Ground connection is connected to this.Processing power and signal ground pcb board when mostly can be using single-point after Power Groud and signal Ground Split
The mode of ground connection is processed, and is a kind of EPS products single-point grounding schematic diagrames referring to Fig. 2, it is common practice that Power Groud (is filtered i.e. in figure
The ground of ripple module and power model) and other signal processing modules ground (power module, MCU control module, monitoring mould such as in figure
The ground of block and pre- driving module) first separate, be then connected at a certain earth point again, i.e. the key of the method is never to make work(
The circuit that the circuit or noise level that rate differs greatly differ greatly shares one section of ground wire.For EPS products, the earth point is usual
It is power connector porch, in such as Fig. 2 at connector J1.The ground of modules is (mainly at power model and signal in figure
Reason module) separated from power connector J1 porch, cabling (black cabling is ground cabling schematic diagram in Fig. 2), so walks respectively
Line due to being coupled without common impedance between Power Groud and other signal processing module ground, therefore intermodule interfere it is small but this
Ground cabling is because being to start separate cabling in porch, so that signal ground line is more long, simultaneously for EPS products, intermodule
Ground difference cabling so that pre- driving module controls power model because ground is walked that line loop is too remote (to control power model signal
Earth-return will briefly return to connector J1 porch and then arrive again at the controlled point of power model) and cause control signal unstable, enter
And cause EPS products in terms of EMC is solved with bigger challenge.
The content of the invention
The technical problems to be solved by the invention there is provided a kind of raising jamproof pcb board of electric boosting steering system
And earthing method, traditional earthing method is broken through, Power Groud and other signal processing modules are shared into a ground, i.e., do not consider public affairs
Common-impedance coupling problem, then divides ground again in the certain point of power model, by this kind for the treatment of of mode, on the one hand makes dividing for ground
Cut simpler easy, control of the pre- driving module to power model on the other hand can be made more reliable and more stable.
The technical scheme that the present invention is used to solve above-mentioned technical problem is to provide a kind of raising electric power steering system
Unite jamproof pcb board, power model, power module, MCU control module, monitoring module and pre- drive are disposed with the pcb board
Module, the power model is connected with external cell power supply, is connected by holding wire between the power model and pre- driving module,
Wherein, common ground line is provided with the power model, the common ground line carries out segmentation formation at sampling resistor R1
A plurality of branch's ground wire, branch's ground wire connects supply power module, MCU control module, monitoring module and pre- drive respectively
Module.
The above-mentioned jamproof pcb board of raising electric boosting steering system, wherein, the power model is by filtering mould
Block, connector J1 are connected with external cell power supply.
The above-mentioned jamproof pcb board of raising electric boosting steering system, wherein, the power model and pre- driving module it
Between be formed with earth-return, the earth-return by between power model and pre- driving module and walking line holding wire and corresponding ground wire phase
Company forms.
The above-mentioned jamproof pcb board of raising electric boosting steering system, wherein, the power model is three phase rectifier
Bridge, per upper and lower rectifying bridge arm is mutually included, each rectifying bridge arm is connected by a holding wire with pre- driving module, by every holding wire
The signal ground of one and walking line is provided with, and is interconnected to form earth-return.
The present invention also provides a kind of raising jamproof pcb board of electric boosting steering system to solve above-mentioned technical problem
Earthing method, wherein, comprise the following steps：Power model is arranged on pcb board, power module, MCU control module monitors mould
Block and pre- driving module；The first cabling in power model of the ground wire of each module, after then being split at sampling resistor R1 again
It is supplied respectively to power module, MCU control module, monitoring module and pre- driving module；By the power model and external cell power supply
It is connected, power model is connected with pre- driving module and set earth-return by holding wire；By power module, MCU control module, prison
Control module is connected with pre- driving module by holding wire.
The earthing method of the above-mentioned raising jamproof pcb board of electric boosting steering system, wherein, the power model leads to
Cross filtration module, connector J1 to be connected with external cell power supply, the power model is three-phase commutation bridge, per mutually comprising whole up and down
Stream bridge arm, each rectifying bridge arm is connected with pre- driving module by a holding wire, one is provided with by every holding wire and is walked
The signal ground of line, and it is interconnected to form earth-return.
Ground of the invention cabling new way its it is maximum the characteristics of be first by ordinary power with other signal processing modules
Share one section of ground, without consider common impedance coupling.By this kind of wiring, due to (power module, MCU between each signaling module
Control module, between monitoring module and pre- driving module) signal code all very littles, be generally only tens milliamperes each other, thus electricity
Pressure difference and fluctuation are very small between the ground of source module, MCU control module, monitoring module and pre- driving module, be can be ignored,
So as to ensure that the interaction of the signal between signaling module is clean stabilization, the antijamming capability of product is set to have obtained greatly carrying
It is high.
Brief description of the drawings
Fig. 1 is single-point grounding principle schematic；
Fig. 2 is a kind of single-point grounding schematic diagram of EPS products；
Fig. 3 is the jamproof pcb board ground connection schematic diagram of electric boosting steering system of the invention；
Fig. 4 is using traditional earthing mode test b CI results；
Fig. 5 is using the embodiment test b CI results of the inventive method.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 3 is the jamproof pcb board ground connection schematic diagram of electric boosting steering system of the invention.
Refer to Fig. 3, the jamproof pcb board of raising electric boosting steering system that the present invention is provided, cloth on the pcb board
It is equipped with power model, power module, MCU control module, monitoring module and pre- driving module, the power model and external cell electricity
Source is connected, the first cabling in power model of ground wire of each module, is supplied respectively again after then being split at sampling resistor R1
To power module, MCU control module, monitoring module and pre- driving module.
Specifically, after connector J1 supplies EPS products, the ground of each module was before this for external cell power supply of the invention
The cabling in power model, resupplies power module, MCU control module, monitoring after then being split at sampling resistor R1
Module, pre- driving module etc..Ground of the invention cabling new way its it is maximum the characteristics of be first by ordinary power with other signals
One section of ground is shared to processing module, without considering common impedance coupling.By this kind of wiring, due to the signal between each signaling module
Signal interaction of the electric current all between very little, thus signaling module is stable, and is not influenceed by power model, and pre- driving module with
Between power model, because apart from close, control signal electric current is small, and the earth-return of especially two intermodule signals is also very short, thus in advance
Control of the driving module to power model is also reliable and stable.
It is connected by holding wire between power model of the invention and pre- driving module, and is provided with earth-return；Power module,
MCU control module, monitoring module is connected with pre- driving module by holding wire.Have right due to only having pre- driving module in each signaling module
The control signal interaction of power model, and the ground of pre- driving module and power model is split at resistance R1, pre- driving module and power
The signal interaction of intermodule is also only carried out by the passage near resistance R1, and distance is very near, and control signal electric current also only has
Tens milliamperes, very small, the earth-return of two intermodules is also to be carried out by the passage near resistance R1, and earth-return is short, thus
Control of the pre- driving module to power model is also reliable and stable, and other signaling modules are handed over due to not having signal between power model
Mutually, thus by power model influenceed very small, totally spent and stability this greatly improves the signal between signaling module, so that
Ensure that the interaction of the signal between signaling module is clean stabilization, the antijamming capability of product is greatly improved.Ginseng
See Fig. 3, the power model is three-phase commutation bridge, per upper and lower rectifying bridge arm is mutually included, each rectifying bridge arm passes through a signal
Line is connected with pre- driving module, the signal ground of one and walking line is provided with by every holding wire, and return with being interconnected to form
Road.To the signal lead schematic diagram that 6 black cablings of power model are that pre- driving module controls power model, ground is returned pre- driving module
Road is the ground wire very near with the distance of corresponding signal line and walking line to be realized.
By the pcb board drawn using floor file mode of the present invention, due to the signal between signaling module interact be it is stable, in advance
Driving module to the control signal of power model be also stabilization, thus design EPS products obtained very in actual test
Significant good result.It is using traditional earthing mode test b CI (RF Immunity-Bulk Current referring to Fig. 4
Injection result of the test), curve is that in 0 to 400MHz band limits, each frequency applies interference electric current value size in Fig. 4
Oscillogram, wherein Box junction line region is test not by frequency range, and hatched example areas are being adopted for test by frequency range, i.e. product
Only surveyed in 200 to 400MHz not by testing standard requirement in 0 to 200MHz test band limits during with traditional earthing mode
Testing standard requirement is met in examination band limits, after making novel grounded mode into, its BCI leads in whole test band limits
Testing standard requirement is crossed, referring to Fig. 5, the interference curve of applying is constant, but product passed testing standard in 0 to 400MHz
It is required that.For RI (RF Immunity-Anechoic Chamber) experiments, when being tested using traditional earthing mode, product exists
All it is failure in many frequency ranges, is test result referring to following table：
After making novel grounded mode into, RI tests are all passed through in whole test band limits.
In a word, by using pcb board of the invention, each EMC test event has larger improvement, and overall EMC performances are obtained
Raising is arrived, therefore product reliability also gets a promotion.It is in particular in：When doing EMC experiments before, failure can cause EPS to produce
Product reset or crash (dysfunction), only could cause product normal work by electrification reset；Some failures show as producing
Although product function is normal, output torque fluctuation exceedes limit value (property abnormality), wherein especially being showed with BCI and RI pilot projects
Substantially, after using floor file mode of the invention, BCI and RI experiments are passed through.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, any this area skill
Art personnel, without departing from the spirit and scope of the present invention, when a little modification and perfect, therefore protection model of the invention can be made
Enclose when by being defined that claims are defined.
Claims (6)
1. it is a kind of to improve the jamproof pcb board of electric boosting steering system, power model, power supply mould are disposed with the pcb board
Block, MCU control module, monitoring module and pre- driving module, the power model are connected with external cell power supply, the power model
It is connected by holding wire and pre- driving module between, it is characterised in that common ground line, the public affairs are provided with the power model
Ground wire carries out segmentation at sampling resistor R1 and forms a plurality of branch's ground wire altogether, and branch's ground wire connects supply electricity respectively
Source module, MCU control module, monitoring module and pre- driving module.
2. it is as claimed in claim 1 to improve the jamproof pcb board of electric boosting steering system, it is characterised in that the power
Module is connected by filtration module, connector J1 with external cell power supply.
3. it is as claimed in claim 1 to improve the jamproof pcb board of electric boosting steering system, it is characterised in that the power
Be formed with earth-return between module and pre- driving module, the earth-return by between power model and pre- driving module and walking line letter
Number line is connected with corresponding ground wire and forms.
4. it is as claimed in claim 3 to improve the jamproof pcb board of electric boosting steering system, it is characterised in that the power
Module is three-phase commutation bridge, and per upper and lower rectifying bridge arm is mutually included, each rectifying bridge arm passes through a holding wire and pre- driving module phase
Even, the signal ground of one and walking line is provided with by every holding wire, and is interconnected to form earth-return.
5. a kind of earthing method for improving the jamproof pcb board of electric boosting steering system, it is characterised in that including following step
Suddenly：
Power model, power module, MCU control module, monitoring module and pre- driving module are arranged on pcb board；
The first cabling in power model of the ground wire of each module, electricity is supplied respectively to after then being split at sampling resistor R1 again
Source module, MCU control module, monitoring module and pre- driving module；
The power model is connected with external cell power supply, power model is connected and is set with pre- driving module by holding wire
Earth-return；Power module, MCU control module, monitoring module are connected with pre- driving module by holding wire.
6. the earthing method of the jamproof pcb board of electric boosting steering system is improved as claimed in claim 5, and its feature exists
In the power model is connected by filtration module, connector J1 with external cell power supply, and the power model is three phase rectifier
Bridge, per upper and lower rectifying bridge arm is mutually included, each rectifying bridge arm is connected by a holding wire with pre- driving module, by every holding wire
The signal ground of one and walking line is provided with, and is interconnected to form earth-return.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016103620645 | 2016-05-26 | ||
| CN201610362064 | 2016-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106852102A true CN106852102A (en) | 2017-06-13 |
| CN106852102B CN106852102B (en) | 2023-08-08 |
Family
ID=59118631
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720015450.7U Withdrawn - After Issue CN206389685U (en) | 2016-05-26 | 2017-01-06 | One kind improves the jamproof pcb board of electric boosting steering system |
| CN201710010221.0A Active CN106852102B (en) | 2016-05-26 | 2017-01-06 | PCB capable of improving anti-interference of electric power steering system and grounding method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720015450.7U Withdrawn - After Issue CN206389685U (en) | 2016-05-26 | 2017-01-06 | One kind improves the jamproof pcb board of electric boosting steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN206389685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146494A (en) * | 2017-12-18 | 2018-06-12 | 联创汽车电子有限公司 | The electronic control unit of EPS |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206389685U (en) * | 2016-05-26 | 2017-08-08 | 上海拿森汽车电子有限公司 | One kind improves the jamproof pcb board of electric boosting steering system |
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| US20040100233A1 (en) * | 2002-11-25 | 2004-05-27 | Delta Electronics, Inc., | Method for eliminating noise interference and acoustic noise by printed circuit board ground plane layout |
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| CN101378944A (en) * | 2006-08-01 | 2009-03-04 | 日本精工株式会社 | Electric power steering system |
| CN102655367A (en) * | 2011-03-04 | 2012-09-05 | 三菱电机株式会社 | Power module |
| CN103018571A (en) * | 2012-12-05 | 2013-04-03 | 北京工业大学 | Dual-coupling type on-line monitoring device of ground impedance of electric transmission line |
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| CN104135148A (en) * | 2014-07-17 | 2014-11-05 | 青岛歌尔声学科技有限公司 | USB (Universal Serial Bus) interface circuit |
| CN206389685U (en) * | 2016-05-26 | 2017-08-08 | 上海拿森汽车电子有限公司 | One kind improves the jamproof pcb board of electric boosting steering system |
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2017
- 2017-01-06 CN CN201720015450.7U patent/CN206389685U/en not_active Withdrawn - After Issue
- 2017-01-06 CN CN201710010221.0A patent/CN106852102B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040100233A1 (en) * | 2002-11-25 | 2004-05-27 | Delta Electronics, Inc., | Method for eliminating noise interference and acoustic noise by printed circuit board ground plane layout |
| CN1658519A (en) * | 2005-03-16 | 2005-08-24 | 上海贝豪通讯电子有限公司 | TD-SCDMA mobile phone circuit board for implementing eftective integral distribution |
| KR20070089581A (en) * | 2006-02-28 | 2007-08-31 | 인천대학교 산학협력단 | Power supply device in printed curciut board |
| CN101378944A (en) * | 2006-08-01 | 2009-03-04 | 日本精工株式会社 | Electric power steering system |
| CN102655367A (en) * | 2011-03-04 | 2012-09-05 | 三菱电机株式会社 | Power module |
| CN103018571A (en) * | 2012-12-05 | 2013-04-03 | 北京工业大学 | Dual-coupling type on-line monitoring device of ground impedance of electric transmission line |
| CN103916207A (en) * | 2014-04-11 | 2014-07-09 | 北京理工大学 | Active device and method for interfering multi-frequency-band power line communication |
| CN104135148A (en) * | 2014-07-17 | 2014-11-05 | 青岛歌尔声学科技有限公司 | USB (Universal Serial Bus) interface circuit |
| CN206389685U (en) * | 2016-05-26 | 2017-08-08 | 上海拿森汽车电子有限公司 | One kind improves the jamproof pcb board of electric boosting steering system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146494A (en) * | 2017-12-18 | 2018-06-12 | 联创汽车电子有限公司 | The electronic control unit of EPS |
| CN108146494B (en) * | 2017-12-18 | 2020-04-14 | 联创汽车电子有限公司 | Electronic control unit of EPS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106852102B (en) | 2023-08-08 |
| CN206389685U (en) | 2017-08-08 |
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Address after: Room 702, Building 16, 1000 Jinhai Road, Pudong New Area, Shanghai Applicant after: NASN AUTOMOTIVE ELECTRONICS Co.,Ltd. Address before: Room J365, 4 Blocks, Zone B, 925 Yecheng Road, Jiading District, Shanghai, 2003 Applicant before: NASN AUTOMOTIVE ELECTRONICS Co.,Ltd. |
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