CN204718782U - A kind of test fixture of electronic accelerator pedal of automobile - Google Patents
A kind of test fixture of electronic accelerator pedal of automobile Download PDFInfo
- Publication number
- CN204718782U CN204718782U CN201520382869.7U CN201520382869U CN204718782U CN 204718782 U CN204718782 U CN 204718782U CN 201520382869 U CN201520382869 U CN 201520382869U CN 204718782 U CN204718782 U CN 204718782U
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- pedal
- depression bar
- automobile
- accelerator pedal
- electronic accelerator
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Abstract
A kind of test fixture of electronic accelerator pedal of automobile, comprise base, be installed on the pedal clamping and positioning device on base, trample action generating means, screen resilience survey sensor and temperature sensor, rotation angle measurement assembly, limit switch assembly for temperature compensation, the utility model is by adopting pedal clamping and positioning device, trample action generating means, screen resilience is measured and temperature compensation component, rotation angle measurement assembly, limit switch assembly cooperatively interacts, performance test can be carried out rapidly and accurately to electronic accelerator pedal assembly, this structural design highly versatile, the test clamping of the electronic accelerator pedal of automobile of Multiple Type specification can be applicable to, as long as the spacing of reasonable adjusting pedal locating piece and photoelectric sensor define angle, between assembly, structural arrangement is ingenious, manufacturing cost is cheap, can the tested gas pedal exemplar of quick position.
Description
Technical field
The utility model relates to part of automobile engine manufacture and field tests, is specifically related to a kind of test fixture of electronic accelerator pedal of automobile.
Background technology
Electronic accelerator pedal assembly accelerator pedal module (APM) is for the intentions to accelerate and decelerate of driver being converted into electric signal and being transferred to the device of electronic controller.Generally be made up of pedal, pedal position sensor, back-moving spring, damping mechanism etc.
Along with the fast development of automotive electronic technology, drive based on drive-by-wire(drive-by-wire) efp of theory replaces conventional pull wires formula gas pedal becomes inexorable trend.Compared with traditional gas pedal, the acceleration of driver intention directly changes into after electric signal is sent to engine management system and can realize feed speed control fast, accurately by efp, fuel economy can be improved simultaneously, and various function can be set to improve driving safety and comfortableness, as idle speed control, polling power controlling, cruising controls.Along with the appearance of national compulsory Abgasgesetz and people are to the active demand of car safety, electronic accelerator pedal assembly has become the standard configuration parts of automobile.
The output characteristics of electronic accelerator pedal assembly is not only directly connected to the accurate control of ECU (Electrical Control Unit) to throttle demand, also affects the vehicle such as traffic safety and fuel consumption level Key Performance Indicator simultaneously.Therefore, manufacturer proposes urgent demand to the measuring technology of electronic accelerator pedal assembly and relevant apparatus thereof, and the corresponding test job of the development along with electronic accelerator pedal assembly technology is also in continuous upgrading.
In electronic accelerator pedal assembly product test, perfect standard, regulation and test checkout equipment supporting are with it had abroad.But due to technical monopoly and blockade on new techniques, referential standard, technical information are considerably less.The domestic Testing Technology Study to electronic accelerator pedal assembly is less, lacks relevant industries standard guidance for a long time, and each enterprise according to the feature of oneself product, can only design easy pick-up unit and carry out testing experiment.As DongFeng Automobile Co., Ltd adopts single-acting cylinder to make driving force on test fixture.Saic Chery Automobile Co., Ltd is worked by solenoid control increased stroke-adjustable gas cylinder, electronic accelerator pedal assembly is carried out to the loading test of moment.Above-mentioned driving mechanism is bulky, complex structure.The people such as the Guo Peng of Shanghai University devise the special test platform of gas pedal, and in order to adapt to the installation of the gas pedal of various model, too much devises adjustment link, make test board physical construction become very complicated.It is worth mentioning that this test board utilizes driving stepper motor electronic accelerator pedal assembly to move, although stepper motor more easily realizes on controlling angle, in its use procedure, Cun Lost walks problem and will bring error to test structure.To sum up, the load maintainer that the detection fixture of researchist's design domestic at present has is heavier, bulky, dispersion, can not ensure the concentricity of pedal and load maintainer center of rotation.The load mode even had adopts the mode directly promoted, and cannot eliminate the generation of side force, measuring accuracy is lower; Some structures are too complicated again, add difficulty to design, processing, and do not consider the feedback of position in type of drive.
Utility model content
The utility model grips problem for the test block in automobile electric gasoline throttle characteristic test, provide a kind of structure simple, be easy to the Special-purpose testing jig device that efp is installed, object is: can stablize and accommodate tested exemplar, automatic trample action can be realized, the angle of rotation, the screen resilience of pedal can be detected, tested exemplar can also be changed fast, improve the testing level of exemplar, improve testing efficiency.
Technical solution of the present utility model:
A kind of test fixture of electronic accelerator pedal of automobile, it is characterized in that: comprise base, be installed on the pedal clamping and positioning device on base, trample action generating means, screen resilience survey sensor and temperature sensor, rotation angle measurement assembly, limit switch assembly for temperature compensation;
Described pedal clamping and positioning device is made up of the two pieces of pedal locating pieces be arranged on base.
Described trample action generating means comprises: pedal depression bar, pedal depression bar support, electric machine support, DC speed-reducing and cam, the outline line of described pedal depression bar and described cam is tangent, DC speed-reducing band moving cam is around the positive and negative rotation of motor shaft, actuated by cams pedal depression bar, around rotating shaft reciprocating rotation, simulates reciprocal trample action;
Described screen resilience survey sensor and for the temperature sensor of temperature compensation comprise directly be pasted onto strain force sensor on pedal depression bar and for force snesor is done temperature compensation temperature sensor, pedal depression bar is metal material, can ensure that force snesor is consistent with the temperature environment residing for temperature sensor;
Described rotation angle measurement assembly comprises: angular transducer, angular transducer support, and angular transducer is fixed on angular transducer support, and its rotating shaft can keep coaxial connection with the rotating shaft of tested gas pedal, detects the angle that gas pedal turns in real time;
Described limit switch assembly is two covers, comprise photoelectric sensor and light blocks block, for defining the maximum anglec of rotation of accelerator pedal of automobile, a set of reference position being arranged on pedal, the another set of range place being arranged on pedal, the angle formed between the two is the revolvable maximum angle of gas pedal;
Described photoelectric sensor adopts 5mm correlation " U " type slot type optoelectronic switch, and be installed on electric machine support, light blocks block and is arranged on pedal depression bar, can be inswept from " U " type groove, when the reception light of optoelectronic switch be blocked block block time, optoelectronic switch exports high level, and test circuit system can rotate to this position by perception pedal, utilizes 2 " U " type slot type optoelectronic switches can define the angular range of pedal rotation.
Described temperature sensor adopts the analog temperature sensor of AD590 or DS1620, DS18B20 digital temperature sensor.
Described angular transducer is precision conductive plastic potentiometer, and the linearity is ± 0.1%, for measuring the relative angle that efp turns over.
Described cam is disc cam.
Described pedal locating piece Cross section Design is inverted "L" shaped, is provided with the mounting hole being used for fixing pedal.
The beneficial effects of the utility model:
The utility model is by adopting pedal clamping and positioning device, trample action generating means, screen resilience is measured and temperature compensation component, rotation angle measurement assembly, limit switch assembly cooperatively interacts, performance test can be carried out rapidly and accurately to electronic accelerator pedal assembly, this structural design highly versatile, the test clamping of the electronic accelerator pedal of automobile of Multiple Type specification can be applicable to, as long as the spacing of reasonable adjusting pedal locating piece and photoelectric sensor define angle, between assembly, structural arrangement is ingenious, manufacturing cost is cheap, can the tested gas pedal exemplar of quick position.
Trample action generating means adopts DC speed-reducing to drive the form of cam mechanism, and structure is simple, owing to have employed direct current generator, the commutation control of speed governing and rotation is more prone to.
Adopt two photoelectric sensors to define the angular range of pedal rotation, coordinate the relative angle that precision conductive plastic potentiometer angular transducer detection pedal turns over.
The screen resilience of strain force sensor to pedal is adopted to measure.There is the nonlinear problems such as temperature drift due to strain force sensor, directly affect the precision of test result, therefore increase temperature sensor adopts the measurement result of multi-sensor information fusion technology to force snesor to compensate and correct.Compensating approach algorithm can realize or send into upper PC process and realize in the software of follow-up test circuit.
The utility model can carry out high-precision measurement to the anglec of rotation of gas pedal, screen resilience, significant to the test realizing gas pedal combination property.
Accompanying drawing explanation
Fig. 1: the utility model structural principle schematic diagram.
Fig. 2: utility model works view.
Wherein: 1 base 2 pedal locating piece 3 strain force sensor 4 cam 5 temperature sensor 6 pedal depression bar 7 electric machine support 8 DC speed-reducing 9 photoelectric sensor 10 light blocks block 11 angular transducer support 12 angular transducer 13 pedal depression bar support.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
The Special-purpose testing jig of electronic accelerator pedal of automobile as shown in Figure 1, comprises base 1, is installed on the pedal clamping and positioning device on base 1, trample action generating means, screen resilience measurement components, rotation angle measurement assembly, limit switch assembly; Described pedal clamping and positioning device is made up of the two pieces of pedal locating pieces 2 be arranged on base 1; Described trample action generating means comprises: pedal depression bar 6, pedal depression bar support 13, electric machine support 7, DC speed-reducing 8 and cam 4, described pedal depression bar 6 is tangent with the outline line of described cam 4, DC speed-reducing 8 is with moving cam 4 around the positive and negative rotation of motor shaft, cam 4 drives pedal depression bar 6 around rotating shaft reciprocating rotation, simulates reciprocal trample action; Described screen resilience measurement components comprises strain force sensor 3 and the temperature sensor 5 for temperature compensation, and the two is mutually near being all arranged on pedal depression bar 6, ensures that in test process, temperature environment is consistent.Described rotation angle measurement assembly comprises: angular transducer 12, angular transducer support 11, and angular transducer 11 to be fixed on angular transducer support 10 and to be coaxially connected with tested throttle pedal shaft, detects the angle that gas pedal turns in real time; Described limit switch assembly is photoelectric sensor 9 quantity is two, for defining the maximum anglec of rotation of accelerator pedal of automobile, a reference position being arranged on pedal, another is arranged on the range place of pedal, and the angle formed between the two is the revolvable maximum angle of gas pedal.When light blocks " U " type line of rabbet joint gap of block 10 by photoelectric sensor 9, outputs level signals reads for test circuit by photoelectric sensor 9.
Described photoelectric sensor 9 is installed on electric machine support 7, whether be used for perception has barrier to pass through " U " type line of rabbet joint gap, described light blocks block 10 and is installed on pedal depression bar 6, and " U " type line of rabbet joint gap of the utility model photoelectric sensor 9 is blocked block 10 by light and blocked rear output high level signal.
Described cam 4 is disc cam.
Described pedal locating piece 2 Cross section Design is inverted "L" shaped, is provided with the mounting hole being used for fixing pedal.
Embodiment:
A kind of Special-purpose testing jig working state schematic representation of electronic accelerator pedal of automobile, as shown in Figure 2, comprising: base 1, pedal locating piece 2, strain force sensor 3, cam 4, temperature sensor 5, pedal depression bar 6, electric machine support 7, DC speed-reducing 8, photoelectric sensor 9, light block block 10, angular transducer support 11, angular transducer 12, pedal depression bar support 13; Described pedal locating piece 2, pedal depression bar support 13, angular transducer support 11, electric machine support 7 are all arranged on base 1; Described angular transducer 12 is arranged on angular transducer support 11, pedal depression bar support 13 and pedal depression bar 6 hinged; Angular transducer 12 is fixed on angular transducer support 11, and rotating shaft and the rotating shaft of tested pedal workpiece of angular transducer 12 are coaxially fixed.When cam 4 drives pedal depression bar 6 to rotate, pedal depression bar 6 simulates trample action, drives gas pedal to rotate.Its angle turned over just can by angular transducer 12 perception, described DC speed-reducing 8 is arranged on electric machine support 7, be provided with cam 4 in DC speed-reducing 8 front end, described cam 4 coordinates with pedal depression bar 6, drives pedal depression bar 6 to rotate on pedal depression bar support 13.
Specific works process:
First, reset DC speed-reducing, the most short radius of cam and depression bar tangent, pedal depression bar energy clockwise direction is opened, along the axis direction of angular transducer gas pedal pushed gently in the draw-in groove formed by two inverted "L" shaped pedal locating pieces, pedal depression bar is ridden on the pedal part of gas pedal gently, this position is using the initial position as pedal depression bar, i.e. zero angle position again; The position of adjustment two photoelectric sensors, defines reference position and the hard-over position of described pedal depression bar, namely demarcates angle folded by two pedal photoelectric sensors.Connect output cable the corresponding interface to test circuit of gas pedal, angular transducer, force snesor, temperature sensor and photoelectric sensor, ready.Start test circuit system, drive motor band moving cam rotates clockwise, pedal is cam-driven promotion efp and rotates clockwise, and the output signal of metering circuit to angle sensor output signal, screen resilience signal, temperature signal, photo-sensor signal will and gas pedal gathers simultaneously; When pedal travel is to hard-over position, the optoelectronic switch be arranged on herein is blocked, motor is oppositely rotated counterclockwise immediately, under the effect of efp back-moving spring therein, the anti-pedal depression bar that pushes away synchronously is rotated counterclockwise, when pedal depression bar comes back to initial position, the light signal being arranged on the photoelectric sensor of reference position is blocked, and controls motor stalls immediately after the micro controller of metering circuit system recognizes this signal.Above-mentioned motor suitable, be rotated counterclockwise in process, metering circuit carries out synchronous acquisition to the output signal of angle sensor output signal, screen resilience signal, temperature signal, photo-sensor signal will and gas pedal all the time, and the data collected are sent to upper PC in real time according to the form of agreement.
The utility model can adjust draw-in groove spacing flexibly, is applicable to the test clamping of the electronic accelerator pedal of automobile of Multiple Type specification, as long as the spacing of reasonable adjusting pedal locating piece, and again demarcates the anglec of rotation that defines of two photoelectric sensors.
To sum up, the utility model accomplishes the end in view.
Claims (5)
1. the test fixture of an electronic accelerator pedal of automobile, it is characterized in that: comprise base, be installed on the pedal clamping and positioning device on base, trample action generating means, screen resilience survey sensor and temperature sensor, rotation angle measurement assembly, limit switch assembly for temperature compensation; Described pedal clamping and positioning device is made up of the two pieces of pedal locating pieces be arranged on base; Described trample action generating means comprises: pedal depression bar, pedal depression bar support, electric machine support, DC speed-reducing and cam, the outline line of described pedal depression bar and described cam is tangent, DC speed-reducing band moving cam is around the positive and negative rotation of motor shaft, actuated by cams pedal depression bar, around rotating shaft reciprocating rotation, simulates reciprocal trample action; Described screen resilience survey sensor and for the temperature sensor of temperature compensation comprise directly be pasted onto strain force sensor on pedal depression bar and for force snesor is done temperature compensation temperature sensor, pedal depression bar is metal material, can ensure that force snesor is consistent with the temperature environment residing for temperature sensor; Described rotation angle measurement assembly comprises: angular transducer, angular transducer support, and angular transducer is fixed on angular transducer support, and its rotating shaft can keep coaxial connection with the rotating shaft of tested gas pedal, detects the angle that gas pedal turns in real time; Described limit switch assembly is two covers, comprise photoelectric sensor and light blocks block, for defining the maximum anglec of rotation of accelerator pedal of automobile, a set of reference position being arranged on pedal, the another set of range place being arranged on pedal, the angle formed between the two is the revolvable maximum angle of gas pedal; Described photoelectric sensor adopts 5mm correlation " U " type slot type optoelectronic switch, and be installed on electric machine support, light blocks block and is arranged on pedal depression bar, can be inswept from " U " type groove, when the reception light of optoelectronic switch be blocked block block time, optoelectronic switch exports high level, and test circuit system can rotate to this position by perception pedal, utilizes 2 " U " type slot type optoelectronic switches can define the angular range of pedal rotation.
2. the test fixture of electronic accelerator pedal of automobile according to claim 1, is characterized in that: described temperature sensor adopts the analog temperature sensor of AD590 or DS1620, DS18B20 digital temperature sensor.
3. the test fixture of electronic accelerator pedal of automobile according to claim 1, is characterized in that: described angular transducer is precision conductive plastic potentiometer, and the linearity is ± 0.1%, for measuring the relative angle that efp turns over.
4. the test fixture of electronic accelerator pedal of automobile according to claim 3, is characterized in that: described cam is disc cam.
5., according to the test fixture of the arbitrary described electronic accelerator pedal of automobile of Claims 1-4, it is characterized in that: described pedal locating piece Cross section Design is inverted "L" shaped, is provided with the mounting hole being used for fixing pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382869.7U CN204718782U (en) | 2015-06-03 | 2015-06-03 | A kind of test fixture of electronic accelerator pedal of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382869.7U CN204718782U (en) | 2015-06-03 | 2015-06-03 | A kind of test fixture of electronic accelerator pedal of automobile |
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| Publication Number | Publication Date |
|---|---|
| CN204718782U true CN204718782U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520382869.7U Expired - Fee Related CN204718782U (en) | 2015-06-03 | 2015-06-03 | A kind of test fixture of electronic accelerator pedal of automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897411A (en) * | 2015-06-03 | 2015-09-09 | 宿迁学院 | Test clamp of automobile electronic throttle pedal |
| CN107179186A (en) * | 2017-06-02 | 2017-09-19 | 杜卫超 | Full automatic car pedal test device |
| CN109030029A (en) * | 2018-08-09 | 2018-12-18 | 合肥工业大学 | Pass through the controller for automobile throttle pedal and method of noise testing for vehicle |
| CN111103142A (en) * | 2019-12-11 | 2020-05-05 | 沈阳航天三菱汽车发动机制造有限公司 | Electronic pedal support for plug-in hybrid electric vehicle engine test bed |
| CN112857830A (en) * | 2021-01-18 | 2021-05-28 | 北京智能车联产业创新中心有限公司 | Testing device and method for automatic driving standard scene |
-
2015
- 2015-06-03 CN CN201520382869.7U patent/CN204718782U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897411A (en) * | 2015-06-03 | 2015-09-09 | 宿迁学院 | Test clamp of automobile electronic throttle pedal |
| CN107179186A (en) * | 2017-06-02 | 2017-09-19 | 杜卫超 | Full automatic car pedal test device |
| CN107179186B (en) * | 2017-06-02 | 2019-05-14 | 德清通承智能科技有限公司 | Full automatic car pedal test device |
| CN109030029A (en) * | 2018-08-09 | 2018-12-18 | 合肥工业大学 | Pass through the controller for automobile throttle pedal and method of noise testing for vehicle |
| CN111103142A (en) * | 2019-12-11 | 2020-05-05 | 沈阳航天三菱汽车发动机制造有限公司 | Electronic pedal support for plug-in hybrid electric vehicle engine test bed |
| CN111103142B (en) * | 2019-12-11 | 2021-08-31 | 沈阳航天三菱汽车发动机制造有限公司 | Electronic pedal support for plug-in hybrid electric vehicle engine test bed |
| CN112857830A (en) * | 2021-01-18 | 2021-05-28 | 北京智能车联产业创新中心有限公司 | Testing device and method for automatic driving standard scene |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20160603 |