CN109580255A - Brake test bed and pedal sensing test method thereof - Google Patents
Brake test bed and pedal sensing test method thereof Download PDFInfo
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- CN109580255A CN109580255A CN201811653915.7A CN201811653915A CN109580255A CN 109580255 A CN109580255 A CN 109580255A CN 201811653915 A CN201811653915 A CN 201811653915A CN 109580255 A CN109580255 A CN 109580255A
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- 238000000034 method Methods 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
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- 238000006073 displacement reaction Methods 0.000 description 2
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
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- Regulating Braking Force (AREA)
Abstract
The invention provides a brake test bed and a pedal sensing test method thereof, wherein the brake test bed comprises: a brake system including a brake pedal and a plurality of brakes; the wheel side driving circuits correspond to the brakes respectively, and each wheel side driving circuit is used for driving a brake disc of the corresponding brake to rotate so as to simulate the driving of a vehicle; the control module is used for determining whether the brake pedal is stepped on or not, acquiring the state parameters of the brake pedal after the brake pedal is stepped on, acquiring the deceleration of the whole vehicle, and generating the brake pedal feeling information according to the state parameters of the brake pedal and the deceleration of the whole vehicle, so that the pedal feeling matching condition of the brake system can be verified under the condition that the real vehicle and a test field are not needed, the verification effect is maximally close to the working condition of the real vehicle, the influences of the liquid demand of the brake, the theory of the expansion amount of an oil pipe and the actual error on the pedal feeling verification can be eliminated, a manufacturer is helped to shorten the development period, and the verification accuracy is increased.
Description
Technical field
The present invention relates to technical field of vehicle more particularly to a kind of brake tester and its pedal to sense method for testing.
Background technique
In the related technology, it is usually only capable of carrying out braking system by simulation calculation and real steering vectors when motor vehicle braking system designs
Pedal sense of uniting matches and verifying.But the relevant technologies have problems in that, the development cycle is long, and emulation is big with actual deviation, and
It is limited by site factors larger.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the first purpose of this invention is to propose a kind of brake tester, real vehicle and examination are not being needed to realize
It tests under conditions of place and verifies the pedal sense match condition of braking system.
Second object of the present invention is to propose a kind of pedal sensing method for testing of brake tester.
In order to achieve the above object, first aspect present invention embodiment proposes a kind of brake tester, comprising: braking system,
The braking system includes brake pedal and multiple brakes；Multiple Direct wheel drives circuits, the multiple Direct wheel drives circuit point
Not corresponding with the multiple brake, each Direct wheel drives circuit is for driving the braking disc spins of corresponding brake to simulate
Vehicle driving；Control module, the control module is for determining whether the brake pedal is operated, and in the brake pedal
After being operated, the state parameter of the brake pedal is obtained, obtains vehicle deceleration, and according to the state of the brake pedal
Parameter and the vehicle deceleration generate brake pedal sense information.
Brake tester according to an embodiment of the present invention, each Direct wheel drives circuit drive the brake disc of corresponding brake
Rotation is travelled with simulating vehicle, and control module obtains the state parameter of brake pedal after brake pedal is operated, and is obtained whole
Vehicle deceleration, and brake pedal sense information is generated according to the state parameter of brake pedal and vehicle deceleration, so as to not
Need to verify under conditions of real vehicle and test site the pedal sense match condition of braking system, verification the verifying results are maximized close to real vehicle
Operating condition can exclude the influence that brake needs liquid measure, oil pipe swell increment theoretical and actual error verifies pedal sense, also, compare
Real vehicle verifying is changed part and is more convenient, do not depend on surface conditions, and the test period is short, and then producer is helped to shorten the development cycle, and increase is tested
Demonstrate,prove accuracy.
According to one embodiment of present invention, the state parameter of the brake pedal includes the pedal force of the brake pedal
And/or the pedal travel of the brake pedal, wherein the brake tester further include: pedal force sensor, the pedal force
Sensor is connect with the brake pedal, and the pedal force sensor is also connect with the control module, the pedal force sensing
Device is used to detect the pedal force of the brake pedal, and the pedal force of the brake pedal is sent to the control module；It steps on
Plate stroke sensor, the pedal travel sensor are separately connected with the brake pedal, the pedal travel sensor also with
Control module connection, the pedal travel sensor are used to detect the pedal travel of the brake pedal, and by the system
The pedal travel of dynamic pedal is sent to the control module.
According to one embodiment of present invention, the brake pedal sense information includes the first pedal sense curve and/or second
Pedal sense curve, wherein the first pedal sense curve is used to indicate the pedal of the vehicle deceleration and the brake pedal
Relationship between power, the second pedal sense curve are used to indicate the pedal travel of the vehicle deceleration and the brake pedal
Between relationship.
According to one embodiment of present invention, the brake tester further include: master cylinder pressure detection unit, the master cylinder
Pressure sensing cell is used to detect the pressure of master cylinder in the braking system, wherein the control module is used for according to institute
State vehicle deceleration described in the calculation of pressure of master cylinder.
According to one embodiment of present invention, the brake tester further include: display module, the display module with
The control module is connected, and the display module is bent for showing the first pedal sense curve and/or the second pedal sense
Line.
According to one embodiment of present invention, the control module is also used to obtain speed, and reaches pre- in the speed
If when test speed, determining whether the brake pedal is operated.
According to one embodiment of present invention, the brake tester further include: multiple wheel speed sensors, it is the multiple
Wheel speed sensors are corresponding with the multiple brake respectively, and each wheel speed sensors are used to detect the braking of corresponding brake
The revolving speed of disk；Electronic stabilizing control system ESC/ anti-lock braking system ABS module, the ESC/ABS module with it is the multiple
Wheel speed sensors are connected, and the ESC/ABS module is also connected with the control module, and the ESC/ABS module is according to each system
The revolving speed of Moving plate determines the speed, and the speed is sent to the control module.
In order to achieve the above objectives, a kind of pedal for brake tester that second aspect of the present invention embodiment proposes senses examination side
Method, the brake tester include braking system and multiple Direct wheel drives circuits, and the braking system includes brake pedal and more
A brake, the multiple Direct wheel drives circuit is corresponding with the multiple brake respectively, and each Direct wheel drives circuit is used for band
The braking disc spins for moving corresponding brake are travelled with simulating vehicle, wherein the described method includes: determining that the brake pedal is
It is no to be operated；After the brake pedal is operated, the state parameter of the brake pedal is obtained, obtains vehicle deceleration；
Brake pedal sense information is generated according to the state parameter of the brake pedal and the vehicle deceleration.
The pedal sensing method for testing of brake tester according to an embodiment of the present invention obtains after brake pedal is operated
The state parameter of brake pedal is taken, obtains vehicle deceleration, and generate according to the state parameter of brake pedal and vehicle deceleration
Brake pedal sense information, so as to verify the pedal sense matching of braking system under conditions of not needing real vehicle and test site
Situation, verification the verifying results are maximized close to real vehicle operating condition, and can exclude brake needs liquid measure, oil pipe swell increment theory and actual error pair
The influence of pedal sense verifying, also, verified compared to real vehicle, it changes part and is more convenient, do not depend on surface conditions, the test period is short, in turn
It helps producer to shorten the development cycle, increases verifying accuracy.
According to one embodiment of present invention, the state parameter of the brake pedal includes the pedal force of the brake pedal
And/or the pedal travel of the brake pedal.
According to one embodiment of present invention, the brake pedal sense information includes the first pedal sense curve and/or second
Pedal sense curve, wherein the first pedal sense curve is used to indicate the pedal of the vehicle deceleration and the brake pedal
Relationship between power, the second pedal sense curve are used to indicate the pedal travel of the vehicle deceleration and the brake pedal
Between relationship.
According to one embodiment of present invention, the braking system further includes master cylinder and booster, and the method is also
It include: the pressure of master cylinder in the detection braking system；Slowed down according to vehicle described in the calculation of pressure of the master cylinder
Degree.
According to one embodiment of present invention, the pedal of the brake tester senses method for testing further include: display institute
State the first pedal sense curve and/or the second pedal sense curve.
According to one embodiment of present invention, the pedal of the brake tester senses method for testing further include: obtains vehicle
Speed；When the speed reaches default test speed, determine whether the brake pedal is operated.
According to one embodiment of present invention, the acquisition speed includes: each braking in the multiple brake of detection
The revolving speed of the brake disc of device；The speed is determined according to the revolving speed of each brake disc.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the block diagram according to the brake tester of the embodiment of the present invention；
Fig. 2 is the block diagram according to the brake tester of one embodiment of the invention；And
Fig. 3 is the flow chart that method for testing is sensed according to the pedal of the brake tester of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the brake tester and its pedal sensing method for testing of the embodiment of the present invention are described.
Fig. 1 is the block diagram according to the brake tester of the embodiment of the present invention.As shown in Figs. 1-2, brake tester
It include: braking system 10, multiple Direct wheel drives circuits 20 and control module 30.
Wherein, braking system 10 includes brake pedal 101 and multiple brakes 102, wherein brake pedal 30 is according to user
Or the operational motion of driver；Multiple Direct wheel drives circuits 102 are corresponding with multiple brakes 102 respectively, each Direct wheel drives electricity
Road 102 is for driving the braking disc spins of corresponding brake 102 to travel with simulating vehicle.For example, as shown in Fig. 2, brake
102 can be 4, and Direct wheel drives circuit 102 can also be 4 accordingly, and 4 Direct wheel drives circuits 102 respectively correspond 4 systems of drive
The braking disc spins of dynamic device 102, so simulate 4 vehicle wheel rotations, simulating vehicle normally travel.
It is understood that the course of work of brake fluid system can are as follows: is applied to brake pedal by taking brake fluid system as an example
101 pedal force causes brake pedal 101 to generate displacement, and pedal gear push rod pushes the vacuum booster work of braking system 10
Make, vacuum booster pushes the brake master cylinder piston in braking system 10 to move to be formed closed hydraulic time after amplifying thrust
Oil pressure is established on road, and oil pressure pushes wheel-braking cylinder piston mobile by pipeline, and brake lining is pushed to compress needed for brake disc acquisition
The braking moment wanted slows down or stops so that vehicle be made to realize.
Control module 30 is obtained for determining whether brake pedal 30 is operated, and after brake pedal 30 is operated
The state parameter of brake pedal 30 obtains vehicle deceleration, and is generated according to the state parameter of brake pedal and vehicle deceleration
Brake pedal sense information.
That is, brake tester operation after, control module 30 can real-time monitoring brake pedal whether be operated, and
After detecting that brake pedal 30 is operated, control module 30 can obtain in real time the state parameter of brake pedal 30, and obtain whole
Then vehicle deceleration generates brake pedal sense information according to the state parameter of brake pedal and vehicle deceleration, so as to
The pedal sense match condition that braking system is verified under conditions of real vehicle and test site is not needed, verification the verifying results are maximized close to reality
Turner condition can exclude the influence that brake needs liquid measure, oil pipe swell increment theoretical and actual error verifies pedal sense, also, phase
It is verified than real vehicle, changes part and be more convenient, do not depend on surface conditions, the test period is short, and then producer is helped to shorten the development cycle, increases
Verify accuracy.
According to one embodiment of present invention, the state parameter of brake pedal includes the pedal force and/or system of brake pedal
The pedal travel of dynamic pedal, wherein as shown in Fig. 2, brake tester further include: pedal force sensor 50 and pedal travel sensing
Device 60.
Wherein, pedal force sensor 50 is connect with brake pedal 30, and pedal force sensor 50 is also connect with control module 30,
Pedal force sensor 50 is used to detect the pedal force of brake pedal 30, and the pedal force of brake pedal 30 is sent to control module
30；Pedal travel sensor 60 is separately connected with brake pedal 30, and pedal travel sensor 60 is also connect with control module 30, is stepped on
Plate stroke sensor 60 is used to detect the pedal travel of brake pedal 30, and the pedal travel of brake pedal 30 is sent to control
Module 30.
It should be noted that initial position when pedal travel can be from driver's brake pedal is moved to brake pedal
Generated pedal displacement when to current location.
According to one embodiment of present invention, brake pedal sense information includes the first pedal sense curve and/or the second pedal
Feel curve, wherein the first pedal sense curve is used to indicate the relationship between vehicle deceleration and the pedal force of brake pedal, and second
Pedal sense curve is used to indicate the relationship between vehicle deceleration and the pedal travel of brake pedal.
That is, braking system 10 makes vehicle realize deceleration, at this point, stepping on after detecting that brake pedal 30 is operated
The pedal force for the brake pedal 30 that plate force snesor 50 can will test in real time is sent to control module 30, and pedal travel senses
The pedal travel for the brake pedal 30 that device 60 can will test in real time is sent to control module 30, meanwhile, control module 30 is also real
When obtain vehicle deceleration.
Control module 30 is getting the pedal force of brake pedal 30, the pedal travel of brake pedal 30 and vehicle deceleration
Etc. after information, the first pedal sense curve is gone out according to the pedal force of brake pedal 30 and vehicle deceleration real-time fitting, and according to system
The pedal travel and vehicle deceleration real-time fitting of dynamic pedal 30 go out the second pedal sense curve.
As an example, first can be fitted according to multiple pedal force datas and corresponding multiple vehicle deceleration data
Pedal sense curve, for example, getting the pedal force F1 of brake pedal 30 in moment t1, getting vehicle deceleration V1；At the moment
T2 gets the pedal force F2 of brake pedal 30, gets vehicle deceleration V2；So analogize, in moment tN, gets braking
The pedal force FN of pedal 30, vehicle deceleration VN is got, as a result, with the abscissa of the pedal force of brake pedal 3, vehicle slows down
Degree is ordinate, according to front get data (F1, V1), (F2, V2) ..., that (FN, VN) fits the first pedal sense is bent
Line.Alternatively, first pedal sense can also be fitted by ordinate of the pedal force of brake pedal 3 with the abscissa of vehicle deceleration
Curve.
Similarly, the second pedal sense can be fitted according to multiple pedal travel data and corresponding multiple vehicle deceleration data
Curve, for example, getting the pedal travel S1 of brake pedal 30 in moment t1, getting vehicle deceleration V1；In moment t2,
It gets the pedal travel S2 of brake pedal 30, get vehicle deceleration V2；So analogize, in moment tN, gets braking
The pedal travel SN of pedal 30, vehicle deceleration VN is got, as a result, with the abscissa of the pedal travel of brake pedal 3, vehicle
Deceleration is ordinate, according to front get data (S1, V1), (S2, V2) ..., (SN, VN) fit the second pedal sense
Curve.Alternatively, can also fit second with the abscissa of vehicle deceleration as ordinate using the pedal travel of brake pedal 3 and step on
Plate sense curve.
According to one embodiment of present invention, brake tester further include: display module, display module and control module phase
Even, display module is for showing the first pedal sense curve and/or the second pedal sense curve.
That is, control module 30 can be by the first pedal sense curve got in real time and/or the second pedal sense curve
Display on the display module, facilitates testing crew to check.As an example, control module 30 can be host ECU
(Electronic Control Unit, electronic control unit), display module can be the screen of host ECU.
According to one embodiment of present invention, as shown in Fig. 2, braking system further includes master cylinder and master cylinder power-assisted
Device 103, master cylinder are connected to multiple brakes 102 by oil pipe 104, and master cylinder booster 103 can be vacuum booster, system
Dynamic master cylinder booster 103 can contain power supply device.
Brake tester further include: master cylinder pressure detection unit 70, master cylinder pressure detection unit 70 is for detecting braking system
The pressure of master cylinder in system, wherein control module 30 is used for the calculation of pressure vehicle deceleration according to master cylinder.
Specifically, in brake tester before use, can be inputted in input module by driver complete vehicle weight mass center parameter,
The information such as brake specification parameter, simulated roadway attachment coefficient.It is run in brake tester and brake pedal 101 is operated it
Afterwards, the pressure for the master cylinder that master cylinder pressure detection unit 70 will test in real time is sent to control module 30, control module 30
It can be according to the current pressure and complete vehicle weight mass center parameter, brake specification parameter, simulated roadway attachment coefficient of master cylinder
Etc. information calculate current vehicle deceleration.
According to one embodiment of present invention, control module 30 is also used to obtain speed, and reaches default test in speed
When speed, determine whether brake pedal 101 is operated.
Specifically, as shown in Fig. 2, brake tester further includes multiple wheel speed sensors 80 and ESC (Electronic
Stability Controller, electronic stabilizing control system)/ABS (Anti-lock Braking System, anti-lock system
Dynamic system) module 90, multiple wheel speed sensors 80 are corresponding with multiple brakes 101 respectively, and each wheel speed sensors 80 are for examining
Survey the revolving speed of the brake disc of corresponding brake 101；ESC/ABS module 90 is connected with multiple wheel speed sensors 80, ESC/ABS module
90 are also connected with control module 30, and ESC/ABS module 90 determines institute's speed according to the revolving speed of each brake disc, and speed is sent to
Control module 30.
Specifically, in brake tester before use, tire specifications parameter, tire can be inputted in input module by driver
The information such as rolling radius, default test speed, after brake tester operation and brake pedal 101 are operated, multiple wheel speeds
The revolving speed of corresponding brake disc can be sent to ESC/ABS module 90 in real time by sensor 80, and ESC/ABS module 90 can be according to multiple
The current rotating speed for the brake disc that wheel speed sensors 80 are sent and tire specification parameter, tire rolling radius etc. calculate speed,
And speed is issued into control module 30.In turn, when current vehicle speed reaches default test speed, brake disc maintains at the uniform velocity rotation fortune
Row can start to carry out brake pedal sensing examination at this time.
As described above, in one particular embodiment of the present invention, the brake pedal sense test process of brake tester can
It is as follows:
The brake tester is before use, complete vehicle weight matter need to be inputted in control module 30 such as host ECU by driver
The information such as heart parameter, tire specification parameter, tire rolling radius, simulated roadway attachment coefficient, default test speed.Retardation test
After platform operation, the braking disc spins of multiple brakes 101, simulating vehicle normally travel, ESC/ are driven by Direct wheel drives motor 20
ABS module 90 receives the signal union that multiple wheel speed sensors 80 export and goes out speed, and speed is issued host ECU；Simultaneously
Pedal travel sensor 60, pedal force sensor 50, master cylinder pressure sensor 70 believe real-time pedal travel signal, pedal force
Number, master cylinder pressure signal be emitted to host ECU.
After speed reaches default test speed, brake disc maintains at the uniform velocity rotating operation, can start test braking at this time
Pedal sense；
After driver's brake pedal 101, host ECU (can lead the master cylinder pressure signal that real-time reception arrives at this time
Cylinder pressure transducer 70 provides) real-time vehicle deceleration is converted to by operation.Real-time vehicle deceleration and pedal force are believed
The first pedal sense curve, real-time vehicle deceleration and pedal travel signal fitting number are fitted into the second pedal sense curve, this
Two pedal sense curves are displayed on the screen of host ECU, and testing crew is facilitated to check.
The brake tester solves the problems, such as brake pedal sensing examination as a result,.
In some embodiments of the invention, control module 30 can be by the pedal force of brake pedal 30, brake pedal 30
Pedal force-stroke, brake disc revolving speed (or vehicle deceleration) store to memory module, thus facilitate data store and retrospect look into
It looks for.
To sum up, brake tester according to an embodiment of the present invention, each Direct wheel drives circuit drive corresponding brake
Braking disc spins are travelled with simulating vehicle, and control module obtains the state parameter of brake pedal after brake pedal is operated,
Vehicle deceleration is obtained, and brake pedal sense information is generated according to the state parameter of brake pedal and vehicle deceleration, so as to
Enough pedal sense match conditions that braking system is verified under conditions of not needing real vehicle and test site, verification the verifying results maximize patch
Nearly real vehicle operating condition can exclude the influence that brake needs liquid measure, oil pipe swell increment theoretical and actual error verifies pedal sense, and
And verified compared to real vehicle, it changes part and is more convenient, do not depend on surface conditions, the test period is short, and then producer is helped to shorten exploitation week
Phase increases verifying accuracy.
Corresponding with the brake tester of previous embodiment, the invention also provides a kind of pedals of brake tester to sense
Method for testing.
Fig. 3 is the flow chart of the pedal sensing method for testing of brake tester according to embodiments of the present invention.Brake tester packet
Braking system and multiple Direct wheel drives circuits are included, braking system includes brake pedal and multiple brakes, multiple Direct wheel drives electricity
Road is corresponding with multiple brakes respectively, and each Direct wheel drives circuit is for driving the braking disc spins of corresponding brake to simulate
Vehicle driving.
As shown in figure 3, the pedal sensing method for testing of brake tester of the embodiment of the present invention includes:
S1: determine whether brake pedal is operated；
S2: after brake pedal is operated, the state parameter of brake pedal is obtained, obtains vehicle deceleration；
S3: brake pedal sense information is generated according to the state parameter of brake pedal and vehicle deceleration.
According to one embodiment of present invention, the state parameter of brake pedal includes the pedal force and/or system of brake pedal
The pedal travel of dynamic pedal.
According to one embodiment of present invention, brake pedal sense information includes the first pedal sense curve and/or the second pedal
Feel curve, wherein the first pedal sense curve is used to indicate the relationship between vehicle deceleration and the pedal force of brake pedal, and second
Pedal sense curve is used to indicate the relationship between vehicle deceleration and the pedal travel of brake pedal.
According to one embodiment of present invention, braking system further includes master cylinder and booster, method further include: detection
The pressure of master cylinder in braking system；According to the calculation of pressure vehicle deceleration of master cylinder.
According to one embodiment of present invention, the pedal of brake tester senses method for testing further include: display first is stepped on
Plate sense curve and/or the second pedal sense curve.
According to one embodiment of present invention, the pedal of brake tester senses method for testing further include: obtains speed；?
When speed reaches default test speed, determine whether brake pedal is operated.
According to one embodiment of present invention, the braking that speed includes: each brake in the multiple brakes of detection is obtained
The revolving speed of disk；Speed is determined according to the revolving speed of each brake disc.
It should be noted that the aforementioned explanation to brake tester embodiment is also applied for the braking examination of the embodiment
The pedal sensing method for testing of platform is tested, details are not described herein again.
To sum up, the pedal of brake tester according to an embodiment of the present invention senses method for testing, is operated it in brake pedal
Afterwards, the state parameter of brake pedal is obtained, obtains vehicle deceleration, and according to the state parameter of brake pedal and vehicle deceleration
Brake pedal sense information is generated, so as to verify the pedal sense of braking system under conditions of not needing real vehicle and test site
Match condition, verification the verifying results are maximized close to real vehicle operating condition, and can exclude brake needs liquid measure, oil pipe swell increment theory and reality accidentally
The influence that difference verifies pedal sense, also, verified compared to real vehicle, it changes part and is more convenient, do not depend on surface conditions, the test period is short,
And then producer is helped to shorten the development cycle, increase verifying accuracy.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as to limit of the invention
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of the invention
Type.
Claims (14)
1. a kind of brake tester characterized by comprising
Braking system, the braking system include brake pedal and multiple brakes；
Multiple Direct wheel drives circuits, the multiple Direct wheel drives circuit is corresponding with the multiple brake respectively, and each wheel side is driven
Dynamic circuit is for driving the braking disc spins of corresponding brake to travel with simulating vehicle；
Control module, the control module are stepped on for determining whether the brake pedal is operated in the brake pedal
After lower, the state parameter of the brake pedal is obtained, obtains vehicle deceleration, and according to the state parameter of the brake pedal
Brake pedal sense information is generated with the vehicle deceleration.
2. brake tester according to claim 1, which is characterized in that the state parameter of the brake pedal includes described
The pedal travel of the pedal force of brake pedal and/or the brake pedal, wherein the brake tester further include:
Pedal force sensor, the pedal force sensor are connect with the brake pedal, the pedal force sensor also with it is described
Control module connection, the pedal force sensor are used to detect the pedal force of the brake pedal, and by the brake pedal
Pedal force is sent to the control module；
Pedal travel sensor, the pedal travel sensor are separately connected with the brake pedal, the pedal travel sensing
Device is also connect with the control module, and the pedal travel sensor is used to detect the pedal travel of the brake pedal, and will
The pedal travel of the brake pedal is sent to the control module.
3. brake tester according to claim 2, which is characterized in that the brake pedal sense information includes the first pedal
Feel curve and/or the second pedal sense curve, wherein the first pedal sense curve be used to indicate the vehicle deceleration with it is described
Relationship between the pedal force of brake pedal, the second pedal sense curve are used to indicate the vehicle deceleration and the braking
Relationship between the pedal travel of pedal.
4. brake tester according to claim 3, which is characterized in that further include:
Master cylinder pressure detection unit, the master cylinder pressure detection unit are used to detect the pressure of master cylinder in the braking system
Power, wherein the control module is used for the vehicle deceleration according to the calculation of pressure of the master cylinder.
5. brake tester according to claim 3, which is characterized in that further include:
Display module, the display module are connected with the control module, and the display module is for showing first pedal
Feel curve and/or the second pedal sense curve.
6. brake tester according to claim 1, which is characterized in that the control module is also used to obtain speed, and
When the speed reaches default test speed, determine whether the brake pedal is operated.
7. brake tester according to claim 6, which is characterized in that further include:
Multiple wheel speed sensors, the multiple wheel speed sensors are corresponding with the multiple brake respectively, and each wheel speed passes
Sensor is used to detect the revolving speed of the brake disc of corresponding brake；
Electronic stabilizing control system ESC/ anti-lock braking system ABS module, the ESC/ABS module and the multiple wheel speed pass
Sensor is connected, and the ESC/ABS module is also connected with the control module, and the ESC/ABS module is according to each brake disc
Revolving speed determines the speed, and the speed is sent to the control module.
8. the pedal of brake tester a kind of senses method for testing, which is characterized in that the brake tester include braking system and
Multiple Direct wheel drives circuits, the braking system include brake pedal and multiple brakes, the multiple Direct wheel drives circuit point
Not corresponding with the multiple brake, each Direct wheel drives circuit is for driving the braking disc spins of corresponding brake to simulate
Vehicle driving, wherein the described method includes:
Determine whether the brake pedal is operated；
After the brake pedal is operated, the state parameter of the brake pedal is obtained, obtains vehicle deceleration；
Brake pedal sense information is generated according to the state parameter of the brake pedal and the vehicle deceleration.
9. the pedal of brake tester according to claim 8 senses method for testing, which is characterized in that the brake pedal
State parameter includes the pedal force of the brake pedal and/or the pedal travel of the brake pedal.
10. the pedal of brake tester according to claim 9 senses method for testing, which is characterized in that the brake pedal
Feeling information includes the first pedal sense curve and/or the second pedal sense curve, wherein the first pedal sense curve is used to indicate institute
The relationship between vehicle deceleration and the pedal force of the brake pedal is stated, the second pedal sense curve is used to indicate described whole
Relationship between vehicle deceleration and the pedal travel of the brake pedal.
11. the pedal of brake tester according to claim 10 senses method for testing, which is characterized in that the braking system
It further include master cylinder and booster, the method also includes:
Detect the pressure of master cylinder in the braking system；
According to vehicle deceleration described in the calculation of pressure of the master cylinder.
12. the pedal of brake tester according to claim 10 senses method for testing, which is characterized in that further include:
Show the first pedal sense curve and/or the second pedal sense curve.
13. the pedal of brake tester according to claim 8 senses method for testing, which is characterized in that further include:
Obtain speed；
When the speed reaches default test speed, determine whether the brake pedal is operated.
14. the pedal of brake tester according to claim 13 senses method for testing, which is characterized in that the acquisition speed
Include:
Detect the revolving speed of the brake disc of each brake in the multiple brake；
The speed is determined according to the revolving speed of each brake disc.
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| CN201811653915.7A CN109580255A (en) | 2018-12-29 | 2018-12-29 | Brake test bed and pedal sensing test method thereof |
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| CN201811653915.7A CN109580255A (en) | 2018-12-29 | 2018-12-29 | Brake test bed and pedal sensing test method thereof |
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| CN111964919A (en) * | 2020-08-13 | 2020-11-20 | 阳光电源股份有限公司 | Testing method and device for tooth punching working condition, computer equipment and storage medium |
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| CN113776847B (en) * | 2021-07-26 | 2023-02-10 | 中国第一汽车股份有限公司 | Test system, test method and device for vehicle regenerative braking working condition and storage medium |
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