CN107941490B - A kind of detection method for efp - Google Patents
A kind of detection method for efp Download PDFInfo
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- CN107941490B CN107941490B CN201711164040.XA CN201711164040A CN107941490B CN 107941490 B CN107941490 B CN 107941490B CN 201711164040 A CN201711164040 A CN 201711164040A CN 107941490 B CN107941490 B CN 107941490B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a kind of detection methods for efp, include the following steps: step S1, issue system drive command signal to machine governor using external controlling terminal, and then control driving motor and move according to preset speed；Step S2, it is sampled using pressure signal of the signal picker to the two angle signal sensors set in E-Gas ontology the continuous voltage signal issued respectively and pressure sensor sending according to preset sample frequency, and sampling data transmitting is given to external controlling terminal；Step S3, within each period of cycle detection, the Theoretical Design value of data and this three groups of data that controlling terminal will test compares and analyzes processing, executes one or more of accuracy detection, the detection of synchronization degree, multiplicity detection, durability detection to efp.Precision, synchronization degree, multiplicity, the independent or comprehensive detection of durability indices of gas pedal can be achieved in the present invention, applied widely.
Description
Technical field
The invention patent relates to the detections of the reliability of automobile electric gasoline throttle, specifically, it is related to one kind for electronics oil
The detection method of door pedal.
Background technique
With the development of auto electric technology, the efp oil substantially instead of gearing structure
Door.In general, two angular transducers built in efp, it is concurrent can to convert voltage signal for the down stroke of pedal
Thermoacoustic prime engine device is given, to control the size of engine throttle.As an important spare part of Hyundai Motor, E-Gas
The performance of pedal has great influence for the comfort of driving, the safety of driving.Comfort is embodied in gas pedal pushing
Pressure required for acting；Safety is embodied in the reliability of efp, i.e. precision, synchronization degree, multiplicity and resistance to
Long performance.Currently, the technical solution of the detection of gas pedal properties involved in the prior art is a kind of acceleration pedal durability
Detection device, the patent are used as power source using cylinder, install pulley by spring on air cylinder tie rod, and Telescopic-cylinder moves drive
The train movement of pulley and drag-line composition generates the similar movement trampled so that gas pedal be pulled to push.The patent only detects
The fatigue life of gas pedal, other parameters are not detected, it is big using cylinder driving work noise, it needs to be further provided with compressed air
Equipment, detection frequency adjustment is inconvenient, and drag-line is also easy to produce fatigue fracture.The prior art is only capable of the endurance quality of detection gas pedal
The open source literature of index, has a single function, and testing result is not comprehensive enough.
Summary of the invention
In order to easily and reliably detect the property of the precision of efp, synchronization degree, multiplicity and endurance quality
Energy index, the present invention provides a kind of detection methods for efp.
The technical solution adopted by the present invention is that:
A kind of detection method for efp, is detected using a kind of detection device,
The detection device includes workbench, driving arm, pedal support；
The workbench is equipped with deck plate, middle cabinet and four supporting legs, and the middle cabinet is with horizonal base plate and three faces
The cuboid cabinet of vertical side plate, middle cabinet upper end horizontal direction connect deck plate, and middle cabinet lower end four respectively connects one on angle
A supporting leg；The one end of deck plate along its length connects driving arm, and the driving arm is equipped with driving motor, adjustable company
Bar, rocker adjustable and sensor stand, the output shaft of the driving motor are equipped with crank, connect the one of adjustable connecting-rod on crank
End, the lower end of the other end connection rocker adjustable of adjustable connecting-rod, the upper end of rocker adjustable connects sensor stand, the sensor
Bracket is equipped with pressure sensor；
The other end of deck plate along its length connects pedal support, the detected electronics oil of the upper end connection of pedal support
Door body, the E-Gas ontology are connect with gas pedal, and the pedal end of gas pedal and sensor stand contact, described
Two angular transducers are equipped in E-Gas ontology；
The vertical side plate of the middle cabinet along its length is equipped with machine governor and signal picker；
When work, the driving motor drives crank rotation, and the movement of crank handle turns adjustable connecting-rod, adjustable connecting-rod pushes adjustable
Swing rod is swung, and rocker adjustable pushes gas pedal to swing up and down, and the machine governor adjusts the revolving speed of driving motor；
The detection method includes the following steps:
Step S1 issues system drive command signal to machine governor using external controlling terminal, and then controls and drive
Dynamic motor is moved according to preset speed；
Step S2, using the signal picker to the two angle signal sensors set in the E-Gas ontology point
The continuous voltage signal V not issueda, signal VbAnd pressure sensor issue pressure signal F according to preset sample frequency into
Row sampling, obtains discrete sample signals Va(i)、Vb(i), then sampling data transmitting is given external controlling terminal by F (i)；
Step S3, within each period of cycle detection, data V that the controlling terminal will testa(i)、Vb(i)、F(i)
With the Theoretical Design value V of this three groups of dataad(i)、Vbd(i)、Fd(i) processing is compared and analyzed, efp is executed
One or more of accuracy detection, the detection of synchronization degree, multiplicity detection, durability detection.
The method have the benefit that:
(1) present invention can detect the E-Gas of different specification size by adjustable connecting-rod and rocker adjustable,
Interchangeability is strong.
(2) efp may be implemented by pressure sensor and angular transducer and signal picker in the present invention
Precision, synchronization degree, multiplicity, durability index detection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the applicable detection device of the present invention.
Fig. 2 is the front main view of detection device.
Fig. 3 is the top view of detection device.
Fig. 4 is the driving arm structural schematic diagram of detection device.
Fig. 5 is the adjustable connecting-rod structural schematic diagram of detection device.
Fig. 6 is the sensor support structure schematic diagram of detection device.
Fig. 7 is the rocker adjustable structural schematic diagram of detection device.
Fig. 8 is the swing link bracket structural schematic diagram of detection device.
Serial number in figure 1 above-Fig. 8:
Workbench 1, deck plate 11, middle cabinet 12, supporting leg 13, machine governor 2, driving arm 3, driving motor 31, song
Handle 311, adjustable connecting-rod 32, connector 321, threaded rod 322, rocker adjustable 33, transmission shaft 331, porous plate 332, tie rod holes
3321, sensor stand 34, pressure sensor 341, idler wheel 342, mounting hole 35, supported hole 36, fixation hole 37, motor axis hole
38, pedal support 4, support body 41, E-Gas ontology 42, angular transducer 421, gas pedal 43, signal picker 5, pendulum
Bar bracket 6, bearing hole 61, adjustment fixation hole 62.
Specific implementation method
With reference to the accompanying drawing, the invention is further illustrated by the examples.
Embodiment one
Referring to Fig. 1 to Fig. 3, a kind of detection device for efp, including workbench 1, machine governor 2,
Driving arm 3, pedal support 4, signal picker 5 and swing link bracket 6.
The workbench 1 is equipped with deck plate 11, middle cabinet 12 and four supporting legs 13, and the middle cabinet 12 is with horizontal base
The cuboid cabinet of the vertical side plate of plate and three faces, 12 upper end horizontal direction of middle cabinet connect deck plate 11,12 lower end four of middle cabinet
A supporting leg 13 is respectively connected on a angle.
The driving arm 3 is equipped with driving motor 31, adjustable connecting-rod 32, rocker adjustable 33 and sensor stand 34, institute
The output shaft for stating driving motor 31 is equipped with crank 311, and one end of adjustable connecting-rod 32 is connected on crank 311, adjustable connecting-rod 32
The other end connects the lower end of rocker adjustable 33, and the upper end of rocker adjustable 33 connects sensor stand 34, the sensor stand 34
It is equipped with pressure sensor 341.
The other end of deck plate 11 along its length connects pedal support 4, the detected electricity of the upper end connection of pedal support 4
Seed oil door body 42, the E-Gas ontology 42 are connect with gas pedal 43, and the pedal end and sensor of gas pedal 43
Bracket 34 contacts, and sets that there are two angular transducers 421 in the E-Gas ontology 42.
The pedal support 4 includes support body 41, and the support body 41 is that the lower end of one piece of vertical plate connects one piece of level
Plate, the upper end of vertical plate are equipped with four mounting holes of installation E-Gas ontology 42, and level board, which is equipped with, connect four with deck plate
A mounting hole is equipped with one piece of triangle gusset for reinforcing connection between vertical plate and level board.
The vertical side plate of the middle cabinet 12 along its length is equipped with machine governor 2 and signal picker 5.
The driving motor 31 is variable frequency reducer motor, and the output end of motor is equipped with speed reducer, and the rated power of motor is
0.5Kw, the output revolving speed of speed reducer are 30~60rpm.The machine governor 2 is US-52 type, the angular transducer 421
Included for efp, angular transducer output signal voltage range is 0~5V or 0~10V, the signal picker 5
Specification be NI-USB6002.
Referring to fig. 4, the driving arm 3 is the L shaped plate of level board and vertical plate composition, and one end of vertical plate is equipped with installation
Four mounting holes 35 of driving motor 31, motor axis hole 38 is equipped among four mounting holes 35, and the other end of vertical plate is equipped with branch
Hole 36 is supportted, the one end of the supported hole 36 for transmission shaft 331 supports；Level board is equipped with seven fixation holes 37.
Referring to Fig. 5, the adjustable connecting-rod 32 includes two connectors 321 and a threaded rod 322, by adjusting threaded rod
The entire length of the adjustable adjustable connecting-rod 32 of 322 back-out length.
Referring to Fig. 6, the sensor stand 34 is equipped with pressure sensor 341 and idler wheel 342, the pressure sensor
341 specifications are 0-20Kg.The effect of pressure sensor 341 is to measure the change of pressure value during efp pushes
Change, for the comfort of assessment electronics throttle.The idler wheel 342 acts in gas pedal 43, reduces kinetic friction force.
Referring to Fig. 7, the rocker adjustable 33 includes transmission shaft 331 and porous plate 332, and one end of the transmission shaft 331 is hung down
Direct-connected one end for being connected to porous plate 332, the other end of porous plate 332 are set there are five tie rod holes 3321, adjustable connecting-rod 32 from it is different
Tie rod holes 3321 connect when, the swing angle of adjustable rocker adjustable 33.
Referring to Fig. 8,6 middle position of swing link bracket is equipped with a bearing hole 61, divides on the plate of 61 two sides of bearing hole
It does not set there are two fixation hole 62 is adjusted, two bearings is installed, and fixed conveyor axis 331 is positioned by bearing in the bearing hole 61
One end.Adjustment fixation hole 62 is long waist shaped, by adjusting the position of the adjustable swing link bracket 6 of fixation hole 62, when assembly gram
Take mismachining tolerance.
When work, the driving motor 31 drives crank 311 to rotate, and crank 311 drives adjustable connecting-rod 32 to move, adjustable company
Bar 32 pushes rocker adjustable 33 to swing, and rocker adjustable 33 pushes gas pedal 43 to swing up and down, and generates similar driver and steps on the gas
Door movement, the machine governor 2 adjusts the revolving speed of driving motor 31, passes through the signal picker 5 and pressure sensing
Device 341, angular transducer 421 realize the detection of the precision, synchronization degree, multiplicity, durability index of efp.
Embodiment two
A kind of detection method for efp, the detection device provided using embodiment one, can be realized electricity
The independent or comprehensive detection of many indexs such as precision, synchronization degree, multiplicity, the durability of electronic throttle pedal.
The precision of efp, synchronization degree, multiplicity, the specific testing principle of durability index are as follows:
If the output signal value of two included angular transducers of efp distinguishes VaAnd Vb, pressure sensor
Output signal is F, and respective Theoretical Design value is respectively Vad、VbdAnd Fd, then the precision of efp refers to VaAnd VadBetween,
VbAnd VbdBetween relative error, precision is qualified if relative error is no more than given threshold value；Synchronization degree refers in synchronization,
Two angular transducer output signal VaAnd VbBetween relative error, if relative error be no more than given threshold value, synchronize degree close
Lattice；If two angular transducer output signals are respectively V in upper primary detection circulationa' and Vb', multiplicity refers to VaAnd Va'
Between, VbAnd Vb' between relative error, if relative error is no more than given threshold value, multiplicity is qualified；In durability individual event
In detection, durability refers to pressure Theoretical Design value F under pressure sensor output valve F and efpdBetween it is opposite
Error, if relative error is no more than given threshold value, durability individual event detection is qualified；In comprehensive detection detection, durability list
Detection, accuracy detection, multiplicity detection, all detections qualification in the detection of synchronization degree, then comprehensive detection qualification.
Detection method provided by the invention specifically comprises the following steps:
Step S1 issues system drive command signal to machine governor 2 using external controlling terminal, and then controls and drive
Dynamic motor 31 is moved according to preset speed.
In practical applications, controlling terminal can be industrial computer, and detection method provided by the invention can be written as
Software is mounted on industrial computer and is realized.Under normal circumstances, pre-set velocity can be n=60 (rev/min), then every point
Clock can complete 60 detection circulations, the working time T=60/n=1 (second) of each detection circulation.
Step S2 is issued continuous respectively using two angle signal sensors 421 that collector 5 carries gas pedal
Voltage signal Va, signal VbAnd the pressure signal F of pressure sensor 341 is sampled according to preset sample frequency, and will be adopted
Sample data are sent to external controlling terminal.
Under normal circumstances, sample frequency can be preset as f=1000Hz, then each signal can obtain in each detection circulation
To m sampled point, wherein m=Tf=1000.In this way, continuous signal Va、Vb, F be transformed into discrete sampled signal, use V respectivelya
(i)、Vb(i), F (i) is indicated, wherein i=1,2,3 ..., 1000.Then this three groups of data are sent to industrial computer.
Step S3, within each period of cycle detection, data V that controlling terminal will testa(i)、Vb(i), F (i) and this
The Theoretical Design value V of three groups of dataad(i)、Vbd(i)、Fd(i) processing is compared and analyzed, efp may be implemented
The detection of precision, synchronization degree, multiplicity, durability index.The specific method is as follows:
(1) accuracy detection
Step S311: default precision threshold P as neededjIt transfinites number Q with maximumj。
Under normal circumstances, precision threshold can be set as Pj=5%, the maximum number that transfinites can be set as Qj=5.
Step S312: setting numerical point counter i=1, transfinite counter qj=0.
Step S313: the precision of nonce counter numerical point, calculation formula are calculated are as follows:
Va(i) threshold calculations:
Vb(i) threshold calculations:
Step S314: judging whether precision reaches requirement, if Paj(i) > PjOr Pbj(i) > Pj, then transfinite counter qj
=qj+1.Step S315: numerical point counter i=i+1.
Step S316: judgement detects whether to complete, and detecting if i > m terminates, and executes step S317, otherwise repeats
Step S313 to step S316.
Step 317: testing result is judged, if qj≥Qj, then judgement precision detection is unqualified, and otherwise judgement precision detection is closed
Lattice.
(2) synchronization degree detects
Step S321: pre-determined synchronization degree threshold value P as neededtIt transfinites number Q with maximumt。
Under normal circumstances, synchronous degree threshold value can be set as Pt=5%, maximum transfinites number Qt=5.
Step S322: setting numerical point counter i=1, transfinite counter qt=0.
Step S323: calculating the synchronization degree of nonce counter numerical point, and calculation formula is
Step S324: judging whether synchronization accuracy reaches requirement, if Pat(i) > Pt, then transfinite counter qt=qt+1。
Step S325: numerical point counter i=i+1.
Step S326: judgement detects whether to complete, and detecting if i > m terminates, and executes step S327, otherwise repeats
Step S323 to step S326.
Step S327: judging testing result, if qt≥Qt, then determine that synchronous degree detection is unqualified, otherwise determine the inspection of synchronization degree
It is qualified to survey.
(3) multiplicity detects
Step S331: default multiplicity threshold value P as neededcIt transfinites number Q with maximumc。
Under normal circumstances, multiplicity threshold value can be set as Pc=5%, maximum transfinites number Qc=5.
Step S332: setting numerical point counter i=1, transfinite counter qc=0.
Step S333: calculating the multiplicity of nonce counter numerical point, and calculation formula is
Va(i) multiplicity calculates:
Vb(i) multiplicity calculates:
Wherein, two angular transducer signals of the upper detection circulation of record and pressure sensor signal data are respectively
Va'(i)、Vb' (i), this loop-around data is Va(i)、Vb(i)。
Step S334: judging whether multiplicity reaches requirement, if Pac(i) > PcOr Pbc(i) > Pc, then transfinite counter qc
=qc+1。
Step S335: numerical point counter i=i+1.
Step S336: judgement detects whether to complete, and detect if i > m terminates, execution step S337, otherwise repeatedly step
S333 to step S336.
Step S337: judging testing result, if qc≥Qc, then determine that multiplicity detection is unqualified, otherwise determine multiplicity inspection
It is qualified to survey.
(4) durability detects
Step S341: default durability threshold value P as needednIt transfinites number Q with maximumn。
Under normal circumstances, durability threshold value can be set as Pn=30%, maximum transfinites number Qn=5.
Step S342: setting numerical point counter i=1, transfinite counter qn=0.
Step S343: calculating the durability degree of nonce counter numerical point, and calculation formula is
Step S344: judging whether durability degree reaches requirement, if PFn(i) > Pn, then transfinite counter qn=qn+1。
Step S345: numerical point counter i=i+1.
Step S346: judgement detects whether to complete, and detect if i > m terminates, execution step S347, otherwise repeatedly step
S343 to step S346.
Step S347: judging testing result, if qn≥Qn, then determine that durability detection is unqualified, otherwise determine durability inspection
It is qualified to survey.
The detection of the precision, synchronization degree, multiplicity, durability index of efp is completed by above step.With
If upper accuracy detection, the detection of synchronization degree, multiplicity detection, durability detection can be individually performed or integrate execution, when comprehensive
When closing detection accuracy, synchronization degree, multiplicity, durability index, if the detection of accuracy detection, synchronization degree, multiplicity detection, durability
Any one of testing result test failure is then judged to detecting unqualified.
The above content not makes any form of restriction structure of the invention, shape.All skills according to the present invention
Art any simple modification, equivalent change and modification substantially to the above embodiments, still fall within technical solution of the present invention
In range.
Claims (7)
1. a kind of detection method for efp, which is characterized in that it is detected using a kind of detection device,
The detection device includes workbench (1), driving arm (3), pedal support (4)；
The workbench (1) is equipped with deck plate (11), middle cabinet (12) and four supporting legs (13), the middle cabinet (12) for
The cuboid cabinet of the vertical side plate of horizonal base plate and three faces, middle cabinet (12) upper end horizontal direction connect deck plate (11), intermediate
Cabinet (12) lower end four respectively connects a supporting leg (13) on angle；
The one end of deck plate (11) along its length connects driving arm (3), and the driving arm (3) is equipped with driving motor
(31), the output shaft of adjustable connecting-rod (32), rocker adjustable (33) and sensor stand (34), the driving motor (31) is equipped with
Crank (311), the one end of adjustable connecting-rod (32) is connected on crank (311), and the other end of adjustable connecting-rod (32) connects rocker adjustable
(33) upper end of lower end, rocker adjustable (33) connects sensor stand (34), and the sensor stand (34) is equipped with pressure
Sensor (341)；
The other end of deck plate (11) along its length connects pedal support (4), what the upper end connection of pedal support (4) was detected
E-Gas ontology (42), the E-Gas ontology (42) connect with gas pedal (43), and the pedal of gas pedal (43)
End and sensor stand (34) contact, set that there are two angular transducer (421) in the E-Gas ontology (42)；
The vertical side plate of the middle cabinet (12) along its length is equipped with machine governor (2) and signal picker (5)；Work
When, the driving motor (31) drives crank (311) rotation, and crank (311) drives adjustable connecting-rod (32) movement, adjustable connecting-rod
(32) rocker adjustable (33) are pushed to swing, rocker adjustable (33) pushes gas pedal (43) to swing up and down, the machine governor
(2) revolving speed of driving motor (31) is adjusted；
The detection method includes the following steps:
Step S1 issues system drive command signal using external controlling terminal and gives machine governor (2), and then controls driving
Motor (31) is moved according to preset speed；
Step S2 senses two angle signals set in the E-Gas ontology (42) using the signal picker (5)
The continuous voltage signal V that device (421) issues respectivelya, signal VbAnd the pressure signal F that pressure sensor (341) issues is according to pre-
If sample frequency sampled, obtain the discrete value V of above-mentioned three groups of signalsa(i)、Vb(i), F (i), and by sampling data transmitting
To external controlling terminal；
Step S3, within each period of cycle detection, data V that the controlling terminal will testa(i)、Vb(i), F (i) and this
The Theoretical Design value V of three groups of dataad(i)、Vbd(i)、Fd(i) processing is compared and analyzed, precision is executed to efp
One or more of detection, the detection of synchronization degree, multiplicity detection, durability detection.
2. a kind of detection method for efp according to claim 1, which is characterized in that
The controlling terminal is the industrial computer for being equipped with control software；In the step S1, the pre-set velocity is n=
60 revs/min；60 detection circulations, working time T=60/n=1 second of each detection circulation are then completed per minute.
3. a kind of detection method for efp according to claim 1, which is characterized in that
In the step S2, the sample frequency is preset as f=1000Hz；Then each signal obtains m in each detection circulation
A sampled point, wherein m=Tf=1000.
4. a kind of detection method for efp according to claim 1, which is characterized in that the precision inspection
The method of survey specifically comprises the following steps:
Step S311: default precision threshold P as neededjIt transfinites number Q with maximumj；
Step S312: setting numerical point counter i=1, transfinite counter qj=0；
Step S313: the precision of nonce counter numerical point, calculation formula are calculated are as follows:
Va(i) threshold calculations:
Vb(i) threshold calculations:
Step S314: judging whether precision reaches requirement, if Paj(i) > PjOr Pbj(i) > Pj, then transfinite counter qj=qj+
1；
Step S315: numerical point counter i=i+1；
Step S316: judgement detects whether to complete, and detecting if i > m terminates, and executes step S317, otherwise repeats step
S313 to step S316；
Step 317: testing result is judged, if qj≥Qj, then judgement precision detection is unqualified, and otherwise judgement precision detection is qualified.
5. a kind of detection method for efp according to claim 1, which is characterized in that the synchronous degree
The method of detection specifically comprises the following steps:
Step S321: pre-determined synchronization degree threshold value P as neededtIt transfinites number Q with maximumt；
Step S322: setting numerical point counter i=1, transfinite counter qt=0；
Step S323: calculating the synchronization degree of nonce counter numerical point, and calculation formula is
Step S324: judging whether synchronization degree reaches requirement, if Pat(i) > Pt, then transfinite counter qt=qt+1；
Step S325: numerical point counter i=i+1；
Step S326: judgement detects whether to complete, and detecting if i > m terminates, and executes step S327, otherwise repeats step
S323 to step S326；
Step S327: judging testing result, if qt≥Qt, then determine that synchronous degree detection is unqualified, otherwise determine that the detection of synchronization degree is closed
Lattice.
6. a kind of detection method for efp according to claim 1, which is characterized in that the multiplicity
The method of detection specifically comprises the following steps:
Step S331: default multiplicity threshold value P as neededcIt transfinites number Q with maximumc；
Step S332: setting numerical point counter i=1, transfinite counter qc=0；
Step S333: calculating the multiplicity of nonce counter numerical point, and calculation formula is
Va(i) multiplicity calculates:
Vb(i) multiplicity calculates:
Wherein, two angular transducer signal datas for recording upper detection circulation are respectively Va'(i)、Vb' (i), this recurring number
According to for Va(i)、Vb(i)；
Step S334: judging whether multiplicity reaches requirement, if Pac(i) > PcOr Pbc(i) > Pc, then transfinite counter qc=qc+
1；
Step S335: numerical point counter i=i+1；
Step S336: judgement detects whether to complete, and detect if i > m terminates, execution step S337, otherwise repeatedly step S333
To step S336；
Step S337: judging testing result, if qc≥Qc, then determine that multiplicity detection is unqualified, otherwise determine that multiplicity detection is closed
Lattice.
7. a kind of detection method for efp according to claim 1, which is characterized in that the durability
The method of detection specifically comprises the following steps:
Step S341: default durability threshold value P as needednIt transfinites number Q with maximumn；
Step S342: setting numerical point counter i=1, transfinite counter qn=0；
Step S343: calculating the durability of nonce counter numerical point, and calculation formula is
Step S344: judging whether durability degree reaches requirement, if PFn(i) > Pn, then transfinite counter qn=qn+1；
Step S345: numerical point counter i=i+1；
Step S346: judgement detects whether to complete, and detect if i > m terminates, execution step S347, otherwise repeatedly step S343
To step S346；
Step S347: judging testing result, if qn≥Qn, then determine that durability detection is unqualified, otherwise determine that durability detection is closed
Lattice.
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| CN109632340A (en) * | 2019-01-02 | 2019-04-16 | 南京金龙客车制造有限公司 | A kind of gas pedal multi-function test stand |
| CN110231159A (en) * | 2019-07-05 | 2019-09-13 | 陕西重型汽车有限公司 | A kind of auto pedal free travel detecting tool |
| CN112268821B (en) * | 2020-09-18 | 2022-07-08 | 中国纺织科学研究院有限公司 | Device and method for testing temperature resistance and fatigue performance of longitudinally-arranged composite plate spring |
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