CN104833518B - Vehicle braking test device and method - Google Patents
Vehicle braking test device and method Download PDFInfo
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- CN104833518B CN104833518B CN201410798904.3A CN201410798904A CN104833518B CN 104833518 B CN104833518 B CN 104833518B CN 201410798904 A CN201410798904 A CN 201410798904A CN 104833518 B CN104833518 B CN 104833518B
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Abstract
The invention discloses a kind of vehicle braking test device and method.The test device includes：Framework, is integrated in the bottom of frame of vehicle；Firm banking, is arranged on around framework and is connected with framework；Rotating hub, be arranged on the tire of vehicle lower section and and tire interface, rotating hub can simultaneously rotate with tire；Force snesor, is arranged between framework and firm banking, for the active force between detection framework and firm banking；Foot brake pedal pressure gauge, is arranged on the brake pedal of vehicle, and the brake force of brake pedal is applied to for detecting；Controller, communicates with force snesor and foot brake pedal pressure gauge, for recording active force and brake force.By before driving vehicle is tested into real road, the vehicle braking test device and the traveling process of method simulating vehicle provided first with the present invention, so as to carry out braking test to vehicle in the case where vehicle keeps being relatively fixed, so as to reduce the accident rate directly tested on road, it is ensured that vehicle safety.
Description
Technical field
The present invention relates to vehicle testing field, in particular it relates to a kind of vehicle braking test device and method.
Background technology
With speed more and more higher, security performance of the vehicle in braking just seems even more important, particularly in urgent feelings
Braking under condition.Therefore, it is very necessary braking test to be carried out to vehicle.Vehicle can obtain phase after braking test
The performance parameter of pass, these parameters can provide important data for Car design in the future, vehicle maintenance and improvement and support.
However, existing vehicle braking method of testing is mostly that vehicle is directly driven on real road by driver, and
Performance of the vehicle in braking is detected by associated assay devices.There is very big potential safety hazard in this mode.Due to direct
Braking test is carried out on real road, once vehicle braking performances have exception, easily causes the accident and endangers driver's
Personal safety.
The content of the invention
It is an object of the invention to provide it is a kind of can simulating vehicle travel and in this process carry out vehicle braking test
Vehicle braking test device and method.
To achieve these goals, the present invention provides a kind of vehicle braking test device, and the test device includes：Framework,
It is integrated in the bottom of frame of vehicle；Firm banking, is arranged on around the framework, and is connected with the framework；Rotating hub, is arranged on
The lower section of the tire of the vehicle, and with the tire interface, the rotating hub can simultaneously rotate with the tire；Power is sensed
Device, is arranged between the framework and the firm banking, for detecting the effect between the framework and the firm banking
Power；On foot brake pedal pressure gauge, the brake pedal for being arranged on the vehicle, the brake force of the brake pedal is applied to for detecting；With
And controller, communicated with the force snesor and the foot brake pedal pressure gauge, for recording the active force and the brake force.
Preferably, the test device also includes：Displacement transducer, is arranged between the framework and the firm banking,
For detecting displacement of the framework relative to the firm banking in the tyre rotation；And the controller also with institute
Displacement sensors communicate, for recording the displacement.
Preferably, the test device also includes：Acceleration transducer, is arranged on the vehicle body above the tire, is used for
The acceleration of the vehicle is detected in the tyre rotation；And the controller also communicates with the acceleration transducer,
Mutually verified for receiving the acceleration, and using the acceleration and the active force.
Preferably, the test device also includes：Angular-rate sensor, is arranged in the rotating hub, in the rotating hub
The angular speed of the rotating hub is detected during rotation；Angular displacement sensor, is arranged in the rotating hub, for when the rotating hub is rotated
Detect the angular displacement of the rotating hub；And the controller is also logical with the angular-rate sensor and the angular displacement sensor
Letter, for receiving the angular speed and the angular displacement, and determines according to the angular speed and the angular displacement rotating hub
With the frictional force between the tire, and the frictional force is recorded.
Preferably, the test device also includes：Angular acceleration transducer, is arranged in the rotating hub, at described turn
Hub detects the angular acceleration of the rotating hub when rotating；And the controller also communicates with the angular acceleration transducer, is used for
The angular acceleration is received, and is mutually verified using the angular acceleration and the frictional force.
Preferably, the test device also includes：In gyroscope, the vehicle body for being arranged on the vehicle, in the tire
The vehicle roll angle and/or vehicle body yaw velocity of the vehicle are detected during rotation；And the controller also with the gyro
Instrument communicates, for recording the vehicle roll angle and/or vehicle body yaw velocity.
Preferably, the test device also includes：Temperature sensor, is arranged near the tire, for detecting the wheel
The temperature of tire；At pressure sensor, the inflation inlet for being arranged on the tire, the tire pressure for detecting the tire；And it is described
Controller also with the temperature sensor and the pressure sensor communication, for recording the temperature and the tire pressure.
The present invention also provides a kind of vehicle braking method of testing, and this method includes：Vehicle is arranged in rotating hub, the vehicle
Tire it is corresponding with the rotating hub, and can simultaneously be rotated with the rotating hub；In the bottom of frame integrated framework of the vehicle,
And the framework is connected with firm banking；Detect the active force between the framework and the firm banking；Detection is applied to car
Brake pedal brake force；And record the active force and the brake force.
Preferably, this method also includes：Detect the framework relative to the firm banking in the tyre rotation
Displacement；And record the displacement.
Preferably, this method also includes：The acceleration of the vehicle is detected in the tyre rotation；And described in
Acceleration and the active force are mutually verified.
Preferably, this method also includes：Angular speed and the angular displacement of the rotating hub are detected when the rotating hub is rotated；According to
The angular speed and the angular displacement determine the frictional force between the rotating hub and the tire；And record the friction
Power.
Preferably, this method also includes：The angular acceleration of the rotating hub is detected when the rotating hub is rotated；And utilize institute
State angular acceleration and the frictional force is mutually verified.
Preferably, this method also includes：The vehicle roll angle and/or vehicle body of the vehicle are detected in the tyre rotation
Yaw velocity；And record the vehicle roll angle and/or vehicle body yaw velocity.
Preferably, this method also includes：Detect the temperature and tire pressure of the tire；And record the temperature and the tire
Pressure.
In the above-mentioned technical solutions, the bottom of frame of vehicle is integrated with framework so that framework can be integrated into one with vehicle
Body.The framework can be fixed by the firm banking being connected with framework, and then vehicle is fixed.Can by the rotation of rotating hub
With the traveling process of simulating vehicle, and in this process, the correlation performance parameters of vehicle are detected by various sensors, are thought
Car design, maintenance and improvement in the future provides important data and supported.For example, can detect to drive by foot brake pedal pressure gauge
Member is applied to the brake force of brake pedal, and can detect framework and firm banking when vehicle is braked by force snesor
Between active force.Thus, it is possible to set up the corresponding relation between the brake force and the active force, pedal brake power is drawn
Curve and force profile, and can analyze in braking, the instantaneous force of vehicle dynamic response to external world, to judge
Vehicle whether there is the unbalanced problem of active force in braking between left tire and right wheel tire.By driving vehicle entrance
Before real road is tested, first with running over for the vehicle braking test device that provides of the present invention and method simulating vehicle
Journey, so as to braking test be carried out to vehicle in the case where vehicle keeps being relatively fixed, so as to reduce directly on road
The accident rate tested, it is ensured that vehicle safety.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of vehicle braking test device according to the embodiment of the present invention；
Fig. 2 is the scheme of installation of foot brake pedal pressure gauge according to the embodiment of the present invention；
Fig. 3 is the schematic diagram of the rotating hub of the vehicle braking test device according to another embodiment of the present invention；And
Fig. 4 is the flow chart of vehicle braking method of testing according to the embodiment of the present invention.
Description of reference numerals
The tire of 1 framework, 2 rotating hub 3
The angular-rate sensor of 4 firm banking, 5 force snesor 6
The angular acceleration transducer of 7 angular displacement sensor 8
The temperature sensor of 9 acceleration transducer, 10 displacement transducer 11
The safe spring of cable wire 14 of 12 gyroscope 13
The brake pedal of 15 foot brake pedal pressure gauge 16
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 shows the schematic diagram of vehicle braking test device according to the embodiment of the present invention.As shown in figure 1, should
Test device can include：Framework 1, is integrated in the bottom of frame of vehicle；Firm banking 4, is arranged on around the framework 1, and
It is connected with the framework 1；Rotating hub 2, is arranged on the lower section of the tire 3 of the vehicle, and contacted with the tire 3, the rotating hub 2
Can simultaneously it be rotated with the tire 3；Force snesor 5, is arranged between the framework 1 and the firm banking 4, for detecting
Active force between the framework 1 and the firm banking 4.In addition, the test device can also include foot brake pedal pressure gauge.Fig. 2
Show the scheme of installation of foot brake pedal pressure gauge according to the embodiment of the present invention.As shown in Fig. 2 foot brake pedal pressure gauge 15 can be set
On the brake pedal 16 of the vehicle, the brake force of the brake pedal 16 is applied to for detecting.And the test dress
Controller (not shown) can also be included by putting, and be communicated with the force snesor 5 and the foot brake pedal pressure gauge 15, for recording the work
Firmly with the brake force.
As shown in figure 1, framework 1 can become one with the bottom of frame of vehicle, so, framework 1 and car can make it that
It is relatively fixed, acts simultaneously.Firm banking 4 can be arranged on the surrounding of framework 1.For example, eight fixed bottoms can be set
Seat 4, this eight firm bankings 4 are respectively set at this four side of the front, rear, left and right of vehicle, per the firm banking 4 of side two, and
The two firm bankings 4 correspond respectively to two tires 3 of the side.Preferably, each firm banking 4 has equal apart from framework 1
Distance.After firm banking 4 is set, firm banking 4 can be connected with framework 1, to fix the framework 1.For example, can
With base 4 and the framework 1 of being connected by safe cable wire 13, to ensure bonding strength and reliability.The but skill of this area
Art personnel are it should be appreciated that other connectors can be used for be connected base 4 and framework 1.
Force snesor 5 can be set between framework 1 and firm banking 4.As shown in figure 1, can be in each firm banking 1
One force snesor 5 is all set between framework 1.The impact caused to force snesor 5 is rocked in order to reduce vehicle, can be in frame
The spring 14 connected with force snesor 5 is set between frame 1 and firm banking 4, so as to play a part of buffering.Force snesor 5 can
So that the active force detected is sent into controller, the controller can note down the active force.
Before braking test is carried out, can first pass through each firm banking 4 and framework 1 that force snesor 5 detects it
Between active force, to debug the connection of firm banking 4 and framework 1, finally ensure before vehicle testing, the stress of vehicle is equal
Even, to ensure vehicle balance.
As described above, rotating hub 2 is in contact with the tire 3 of vehicle, the two can be rotated simultaneously.Rotating hub 2 can be driven by motor
Dynamic to rotate, the linear velocity of rotating hub 2 can reach 120Km/h.In an embodiment of the invention, it can be led using rotating hub 2
Dynamic, tire 3 driven mode is tested.In this embodiment, vehicle can be reached in rotating hub 2 first, and caused
Tire 3 and rotating hub 2 are tangent.Because vehicle has four tires 3, therefore, the quantity of rotating hub 2 can also be four, each rotating hub 2
One tire 4 of correspondence.When carrying out braking test, the corresponding rear rotating hub of rear tyre can be activated individually first, rear rotating hub band is allowed
Dynamic rear tyre is rotated.When vehicle touches on the brake and braked, it can detect that being applied to the braking steps on by foot brake pedal pressure gauge 15
The brake force of plate 16, and the active force between framework 1 and firm banking 4, the brake force can be detected by force snesor 5
It is recorded in the controller with the active force.Different damped conditions can be simulated by trampling brake pedal (that is, to braking
Pedal 16 applies different brake force), and measure the active force under different braking operating mode.Afterwards, staff can set up institute
The corresponding relation between brake force and the active force is stated, is drawn by controller or other-end equipment on the same coordinate system
Go out force profile and pedal brake force curve, more clearly to check the relation and variation tendency of active force and brake force.
Further, it is also possible to draw vehicle under different damped conditions by measured active force, vehicle dynamic response is to external world
Active force between instantaneous force, and left rear wheel and off hind wheel is poor, to analyze the braking of vehicle according to the active force difference
Performance, is debugged to left rear wheel and off hind wheel if necessary, the active force difference is gone to zero.
It is then possible to which rotating hub is rotated after stopping, starting preceding rotating hub corresponding with front tyre, rotating hub drives front tyre to turn before allowing
It is dynamic.Afterwards, it can show that the active force between the near front wheel and off-front wheel is poor using above-mentioned same method, with according to the active force
Difference analyzes the braking ability of vehicle, the near front wheel and off-front wheel are debugged if necessary, the active force difference is gone to zero.Most
Afterwards, four rotating hubs 2 can be started simultaneously, and vehicle is tested according to above-mentioned same method.
Alternatively, the present invention can also be tested vehicle by the way of the active of tire 3, rotating hub 2 are driven.Example
Such as, if vehicle is rear wheel drive, then can rotate first tire 3 by the way of vehicle normally travel.Tire 3
Rotate and drive rotating hub 2 to rotate, and tested using above-mentioned identical method.
Thus, can be with the traveling process of simulating vehicle by the rotation of rotating hub 2, and in this process, pass through foot brake pedal pressure gauge
15 are capable of detecting when that driver is applied to the brake force of brake pedal 16, and can be when vehicle is braked by force snesor 5
Detect the active force between framework 1 and firm banking 4.Thus, it is possible to set up between the brake force and the active force
Corresponding relation, draws pedal brake force curve and force profile, and can analyze in braking, vehicle dynamic response pair
Extraneous instantaneous force, it is unbalanced with the presence or absence of active force between left tire and right wheel tire to judge vehicle in braking
Problem.Filled by the vehicle braking test before driving vehicle is tested into real road, provided first with the present invention
The traveling process of simulating vehicle is put, so as to braking test is carried out to vehicle in the case where vehicle keeps being relatively fixed, so as to
To reduce the accident rate directly tested on road, it is ensured that vehicle safety.
In another embodiment of the present invention, as shown in figure 1, the test device can also include：Displacement transducer
10, it is arranged between the framework 1 and the firm banking 4, for detecting that the framework 1 is relative when the tire 3 is rotated
In the displacement of the firm banking 4；And the controller also communicates with institute displacement sensors 10, the rheme for recording
Move.Detected displacement is also associated with being applied to the brake force of brake pedal 16, so as to set up the displacement and institute
State the corresponding relation between brake force.Further, it is also possible to displacement curve is drawn out again on above-mentioned the same coordinate system, so as to
Clearly check pedal brake power, active force and the relation of displacement and variation tendency.As shown in figure 1, the number of displacement transducer 10
Amount can be, for example, eight, be separately positioned between a firm banking 4 and framework 1.
Thus, staff can draw vehicle left rear wheel and off hind wheel, the near front wheel and right side in braking by the displacement
Displacement difference produced by front-wheel, to analyze the braking ability of vehicle jointly according to the poor and described displacement difference of the active force, from
And the accuracy of analysis is improved, and provide data support for vehicle debugging.
In a preferred embodiment of the present invention, as shown in figure 1, the test device can also include：Acceleration is passed
On sensor 9, the vehicle body for being arranged on the top of tire 3, the acceleration for detecting the vehicle when the tire 3 is rotated；
And the controller also communicates with the acceleration transducer 9, for receiving the acceleration, and using the acceleration and
The active force is mutually verified.
Vehicle can be detected in braking by acceleration transducer 9, due to the acceleration that vehicle body is rocked and is produced.Control
Device processed can mutually be verified with active force using acceleration.Specifically, controller can be detected according to institute's force sensor 5
The active force gone out, to draw the mean effort F of vehicle.Afterwards, detected according to the mean effort and acceleration transducer 9
Functional relation between acceleration, mutually to be verified to the two.
For example, can have following functional relation between acceleration and mean effort：
F=α × M × J (1)
Wherein, F represents mean effort；α is the first equivalent coefficient, is parameter preset, can be determined by repeatedly measuring；
M represents the gross mass of vehicle and framework 1, is known parameters；And J represents acceleration.
First, acceleration J, the gross mass M and equation (1) detected according to acceleration transducer 9, can calculate one
Theoretical mean effort F.Then, according to institute's force sensor 5 it is actually detected go out active force, it can be deduced that an actual average make
Firmly.Afterwards, the theoretical mean effort F and the actual average active force are compared, to verify the effect that force snesor 5 is detected
The acceleration J whether power detects with acceleration transducer 9 matches.Similarly, can also be real according to institute's force sensor 5 first
The active force that border is detected, draws a mean effort F.Then, using mean effort F, gross mass M and equation (1),
A theoretical acceleration J can be calculated.Afterwards, compare theoretical acceleration J and by acceleration transducer 9 it is actually detected go out plus
Speed, to verify the acceleration that acceleration transducer 9 detects, whether the active force detected with force snesor 5 matches.It is logical
Mutually verification is crossed, it is possible to achieve the demarcation to force snesor 5 and acceleration transducer 9, so as to ensure the standard of data detected
True property, reliability and authenticity.
Fig. 3 shows the schematic diagram of the rotating hub of the vehicle braking test device according to another embodiment of the present invention.Such as
Shown in Fig. 3, the test device can also include：Angular-rate sensor 6, is arranged in the rotating hub 2, in the rotating hub 2
The angular speed of the rotating hub 2 is detected during rotation；Angular displacement sensor 7, is arranged in the rotating hub 2, in 2 turns of the rotating hub
The angular displacement of the rotating hub 2 is detected when dynamic；And the controller also with the angular-rate sensor 6 and the angle displacement transducer
Device 7 communicates, for receiving the angular speed and the angular displacement, and described in being determined according to the angular speed and the angular displacement
Frictional force between rotating hub 2 and the tire 3, and record the frictional force.Thus, it is possible to set up the frictional force and application
To the corresponding relation between the brake force of brake pedal 16.Further, it is also possible to draw the frictional force on above-mentioned the same coordinate system
Curve, so as to more clearly check relation and variation tendency between frictional force, pedal brake power and active force.
In the present invention, an angular-rate sensor 6 and an angular displacement sensor 7 can be set in each rotating hub 2,
To be capable of determining that by controller under different damped conditions, the frictional force between each rotating hub 2 and tire 3.The frictional force
It is also represented by the brake force between rotating hub 2 and tire 3.Therefore, by the frictional force, vehicle can be analyzed in different braking works
(that is, the different brake force of brake pedal 16 is applied under condition), the braking between the near front wheel and off-front wheel, left rear wheel and off hind wheel
Power is poor, and is debugged according to brake force difference, brake force difference is gone to zero.
Specifically, the frictional force between rotating hub 2 and tire 3 can be determined in the following manner：
L × f=β × 1/2 × I × ((ω1)2-(ω2)2) (2)
L=θ × R (3)
Wherein, L represents the rotation arc length of rotating hub 2；F represents the frictional force between rotating hub 2 and tire 3；I represents rotating hub 2
Rotary inertia, is known parameters；θ represents the angular displacement of rotating hub 2；ω1Represent the angular speed of rotating hub 2 when braking is initial；ω2Represent
The angular speed of rotating hub 2 during end of braking；R represents the radius of rotating hub 2, is known parameters；β is the second equivalent coefficient, for default ginseng
Number, can be determined by repeatedly measuring.
It is possible, firstly, to the angular displacement of rotating hub 2 is obtained by angular displacement sensor 7, and according to the radius R of rotating hub 2, profit
Determined with equation (3) from the initial rotation arc length L to rotating hub during end of braking 2 of braking.Afterwards, angular-rate sensor 6 is passed through
The angular velocity omega of rotating hub 2 when braking initial to obtain1And during end of braking rotating hub 2 angular velocity omega2, afterwards, it is possible to according to
It is described to rotate arc length L, the rotary inertia I of rotating hub 2, determined using equation (2) in braking procedure between rotating hub 2 and tire 3
Frictional force (that is, the brake force between rotating hub 2 and tire 3).According to the frictional force of the near front wheel and off-front wheel, it may be determined that go out a left side
Brake force between front-wheel and off-front wheel is poor, and according to the frictional force of left rear wheel and off hind wheel, it may be determined that go out left rear wheel with
Brake force between off hind wheel is poor.Different damped conditions can be simulated by trampling brake pedal and (are applied to the braking
The different brake force of pedal 16), and the brake force measured between the rotating hub 2 under different braking operating mode and tire 3 is poor.Afterwards, work
Make personnel can be analyzed according to the brake force difference between the rotating hub 2 and tire 3 under different braking operating mode vehicle braking ability,
When vehicle there is heat fading phenomenon, and for Car design in the future, debugging and improves and provides important data support.
As shown in figure 3, in a preferred embodiment of the invention, shown test device can also include：Angular acceleration is passed
Sensor 8, is arranged in the rotating hub 2, the angular acceleration for detecting the rotating hub 2 when the rotating hub 2 is rotated；And it is described
Controller also communicates with the angular acceleration transducer 8, for receiving the angular acceleration, and utilizes the angular acceleration and institute
Frictional force is stated mutually to be verified.
For single rotating hub 2, angular acceleration and the method and principle that are mutually verified with the frictional force of tire 3
The method and principle of the mutual verification of acceleration and active force description above in conjunction are similar, exactly using angular acceleration with rubbing
The functional relation between power is wiped, mutually to be verified to the two, accuracy, the reliability of the data drawn is thereby may be ensured that
With authenticity.
Fig. 1 is rotated back into, in another embodiment of the present invention, the test device can also include：Gyroscope 12, if
Put in the vehicle body of the vehicle, for detecting that the vehicle roll angle and/or vehicle body of the vehicle are horizontal when the tire 3 is rotated
Pivot angle speed；It is horizontal for recording the vehicle roll angle and/or vehicle body and the controller also communicates with the gyroscope 12
Pivot angle speed.Preferably, as shown in figure 1, being respectively provided with a gyroscope 12 in the front and rear sides of vehicle body.When vehicle is braked, one
Denier can detect vehicle roll angle and/or car because vehicle body is rocked and causes body roll and/or yaw by gyroscope 12
Body yaw velocity, and the vehicle roll angle and/or vehicle body yaw velocity are recorded by controller, set up foot brake pedal pressure gauge 15 and examine
The brake force measured and the vehicle roll angle and/or the corresponding relation of vehicle body yaw velocity, think vehicle analysis in the future, set
Meter, debugging, improvement etc. provide data and supported.
In addition, as shown in figure 1, in another embodiment of the present invention, the test device can also include：TEMP
Device 11, is arranged near the tire 3, the temperature for detecting the tire 3；Pressure sensor (not shown), is arranged on institute
At the inflation inlet for stating tire 3, the tire pressure for detecting the tire 3；And the controller also with the temperature sensor 11
With the pressure sensor communication, for recording the temperature and the tire pressure.
When in use, the test device that the present invention can be provided is placed in environment storehouse, and the temperature in the storehouse can be adjusted
Section, to simulate the environmental condition that high temperature, normal temperature, low temperature etc. are different.Temperature sensor 11, the temperature can be set near tire 3
It is, for example, infrared temperature sensor to spend sensor 11.For example, the temperature sensor 11 can be arranged on into safe cable wire 13
At position.In addition, tire 3 inflation inlet install one can outwardly transmission signal, transmit data pressure sensor.This
Sample can just detect tire (for example, different environment temperatures, different rotating speeds, different load etc.) under various conditions
Tire temperature rise and tire pressure data, can thus provide technical basis for tire type selecting, and can for user it is how proper use of this
Vehicle provides theoretical direction, it is to avoid produce huge security incident when running at high speed because of tyre explosion.
It should be noted that in the present invention, the whole parameters that can be recorded according to controller, in the same coordinate system (example
Such as share transverse axis --- time shaft) on draw out respective parameter curve, more clearly to show each on same time shaft
Relation and variation tendency between parameter.Drawing of Curve can be carried out by controller, can also will be recorded by controller
Parameter transmit to other-end equipment to carry out Drawing of Curve, in this regard, the present invention is not limited.
Fig. 4 shows the flow chart of vehicle braking method of testing according to the embodiment of the present invention.As shown in figure 4, should
Method can include：Step S1, vehicle is arranged in rotating hub 2, and the tire 3 of the vehicle is corresponding with the rotating hub 2, and can
Rotated simultaneously with the rotating hub 2；Step S2, in the bottom of frame integrated framework 1 of the vehicle, and the framework 1 and fixed bottom
Seat 4 is connected；Step S3, detects the active force between the framework 1 and the firm banking 4；Step S4, detection is applied to vehicle
Brake pedal 16 brake force；And step S5, record the active force and the brake force.
Need exist for explanation is, although the such statement of S3, S4 has been used, it is not intended that the two steps are
There is precedence, the two steps can be simultaneously parallel.
Although it is not shown, methods described can also include：Detect that the framework 1 is relative when the tire 3 is rotated
In the displacement of the firm banking 4；And record the displacement.
In addition, methods described can also include：The acceleration of the vehicle is detected when the tire 3 is rotated；And profit
Mutually verified with the acceleration and the active force.
In addition, methods described can also include：Angular speed and the angle position of the rotating hub 2 are detected when the rotating hub 2 is rotated
Move；The frictional force between the rotating hub 2 and the tire 3 is determined according to the angular speed and the angular displacement；And record
The frictional force.
In addition, methods described can also include：The angular acceleration of the rotating hub 2 is detected when the rotating hub 2 is rotated；And
Mutually verified using the angular acceleration and the frictional force.
In addition, methods described can also include：Detected when the tire 3 is rotated the vehicle vehicle roll angle and/
Or vehicle body yaw velocity；And record the vehicle roll angle and/or vehicle body yaw velocity.
In addition, methods described can also include：Detect the temperature and tire pressure of the tire 3；And record the temperature and
The tire pressure.
It should be appreciated that the concrete principle of each step in the above method and realization vehicle braking above in conjunction
It is consistent described by test device, in this regard, the present invention is no longer repeated.
In summary, in the vehicle braking test device and method that the present invention is provided, the bottom of frame of vehicle is integrated with
Framework so that framework can become one with vehicle.The framework can be fixed, entered by the firm banking being connected with framework
And vehicle is fixed.Can be with the traveling process of simulating vehicle by the rotation of rotating hub, and in this process, pass through various sensings
Device detects the correlation performance parameters of vehicle, for Car design in the future, maintenance and to improve and provides important data support.
For example, can detect that driver is applied to the brake force of brake pedal by foot brake pedal pressure gauge, and force snesor can be passed through
The active force between framework and firm banking is detected when vehicle is braked.Make thus, it is possible to set up the brake force with described
Corresponding relation between firmly, draws pedal brake force curve and force profile, and can analyze in braking, vehicle
The instantaneous force of dynamic response to external world, to judge vehicle in braking, with the presence or absence of effect between left tire and right wheel tire
The unbalanced problem of power.By before driving vehicle is tested into real road, first with the vehicle of the invention provided
The traveling process of braking test device and method simulating vehicle, so as to be carried out in the case where vehicle keeps being relatively fixed to vehicle
Braking test, so as to reduce the accident rate directly tested on road, it is ensured that vehicle safety.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (12)
1. a kind of vehicle braking test device, it is characterised in that the test device includes：
Framework (1), is integrated in the bottom of frame of vehicle；
Firm banking (4), is arranged on around the framework (1), and be connected with the framework (1)；
Rotating hub (2), is arranged on the lower section of the tire (3) of the vehicle, and is contacted with the tire (3), and the rotating hub (2) can
Rotated simultaneously with the tire (3)；
Force snesor (5), is arranged between the framework (1) and the firm banking (4), for detect the framework (1) with
Active force between the firm banking (4)；
Foot brake pedal pressure gauge (15), is arranged on the brake pedal of the vehicle (16), and the brake pedal is applied to for detecting
(16) brake force；
Angular-rate sensor (6), is arranged in the rotating hub (2), for detecting the rotating hub when the rotating hub (2) is rotated
(2) angular speed；
Angular displacement sensor (7), is arranged in the rotating hub (2), for detecting the rotating hub when the rotating hub (2) is rotated
(2) angular displacement；And
Controller, with the force snesor (5), the foot brake pedal pressure gauge (15), the angular-rate sensor (6) and the angular displacement
Sensor (7) communicates, for recording the active force and the brake force, and according to the angular speed and the angular displacement come really
Fixed frictional force between the rotating hub (2) and the tire (3), and record the frictional force.
2. test device according to claim 1, it is characterised in that the test device also includes：
Displacement transducer (10), is arranged between the framework (1) and the firm banking (4), for turning in the tire (3)
Displacement of the framework (1) relative to the firm banking (4) is detected when dynamic；And
The controller also communicates with institute's displacement sensors (10), for recording the displacement.
3. test device according to claim 1, it is characterised in that the test device also includes：
Acceleration transducer (9), is arranged on the vehicle body above the tire (3), for being detected when the tire (3) is rotated
The acceleration of the vehicle；And
The controller also communicates with the acceleration transducer (9), for receiving the acceleration, and utilizes the acceleration
Mutually verified with the active force.
4. test device according to claim 1, it is characterised in that the test device also includes：
Angular acceleration transducer (8), is arranged in the rotating hub (2), for detecting the rotating hub when the rotating hub (2) is rotated
(2) angular acceleration；And
The controller also communicates with the angular acceleration transducer (8), for receiving the angular acceleration, and utilizes the angle
Acceleration and the frictional force are mutually verified.
5. test device according to claim 1, it is characterised in that the test device also includes：
In gyroscope (12), the vehicle body for being arranged on the vehicle, the car for detecting the vehicle when the tire (3) is rotated
Body angle of heel and/or vehicle body yaw velocity；And
The controller also communicates with the gyroscope (12), for recording the vehicle roll angle and/or vehicle body yaw angle speed
Degree.
6. the test device according to any claim in claim 1-5, it is characterised in that the test device is also wrapped
Include：
Temperature sensor (11), is arranged near the tire (3), the temperature for detecting the tire (3)；
At pressure sensor, the inflation inlet for being arranged on the tire (3), the tire pressure for detecting the tire (3)；And
The controller also with the temperature sensor (11) and the pressure sensor communication, for recording the temperature and institute
State tire pressure.
7. a kind of vehicle brakes method of testing, it is characterised in that this method includes：
Vehicle is arranged in rotating hub (2), the tire (3) of the vehicle is corresponding with the rotating hub (2), and can be with the rotating hub
(2) rotate simultaneously；
In the bottom of frame integrated framework (1) of the vehicle, and the framework (1) is connected with firm banking (4)；
Detect the active force between the framework (1) and the firm banking (4)；
Detection is applied to the brake force of the brake pedal (16) of vehicle；
Angular speed and the angular displacement of the rotating hub (2) are detected when the rotating hub (2) is rotated；
The frictional force between the rotating hub (2) and the tire (3) is determined according to the angular speed and the angular displacement；And
Record the active force, the brake force and the frictional force.
8. method according to claim 7, it is characterised in that this method also includes：
Displacement of the framework (1) relative to the firm banking (4) is detected when the tire (3) is rotated；And
Record the displacement.
9. method according to claim 7, it is characterised in that this method also includes：
The acceleration of the vehicle is detected when the tire (3) is rotated；And
Mutually verified using the acceleration and the active force.
10. method according to claim 7, it is characterised in that this method also includes：
The angular acceleration of the rotating hub (2) is detected when the rotating hub (2) is rotated；And
Mutually verified using the angular acceleration and the frictional force.
11. method according to claim 7, it is characterised in that this method also includes：
The vehicle roll angle and/or vehicle body yaw velocity of the vehicle are detected when the tire (3) is rotated；And
Record the vehicle roll angle and/or vehicle body yaw velocity.
12. the method according to any claim in claim 7-11, it is characterised in that this method also includes：
Detect the temperature and tire pressure of the tire (3)；And
Record the temperature and the tire pressure.
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| CN201410798904.3A CN104833518B (en) | 2014-12-19 | 2014-12-19 | Vehicle braking test device and method |
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| CN201410798904.3A CN104833518B (en) | 2014-12-19 | 2014-12-19 | Vehicle braking test device and method |
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| CN104833518B true CN104833518B (en) | 2017-09-29 |
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| CN105606373B (en) * | 2016-02-26 | 2017-12-22 | 安徽农业大学 | Passenger car parking performance testing device and its application on a kind of revolving drum test table |
| CN106525452B (en) * | 2016-11-17 | 2019-05-28 | 安徽江淮汽车集团股份有限公司 | The test method and test macro of character of heat-fading energy |
| CN106596128A (en) * | 2016-12-15 | 2017-04-26 | 苏州微著设备诊断技术有限公司 | Automobile brake noise anomaly detection alarm |
| CN106598027A (en) * | 2016-12-15 | 2017-04-26 | 苏州微著设备诊断技术有限公司 | Vehicle deceleration abnormal sound diagnosis alarm device |
| CN106840692B (en) * | 2016-12-30 | 2020-09-29 | 北京盘天新技术有限公司 | Integrated detection system for highway |
| CN106595936A (en) * | 2016-12-30 | 2017-04-26 | 北京盘天新技术有限公司 | Three-dimensional combination force measuring device |
| CN106872182B (en) * | 2017-02-15 | 2019-04-12 | 重庆凯瑞汽车试验设备开发有限公司 | A kind of brake system of car bench test coefficient of road adhesion simulator and method |
| CN109425493A (en) * | 2017-08-30 | 2019-03-05 | 上汽通用汽车有限公司 | The method for shipping wooden handcart road transport simulator and road vehicle transport simulation |
| CN109000931B (en) * | 2018-05-28 | 2020-08-28 | 日照人和制动***股份有限公司 | Automobile brake detection platform |
| CN109580255A (en) * | 2018-12-29 | 2019-04-05 | 北京新能源汽车股份有限公司 | Brake test bed and pedal sensing test method thereof |
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| DE29518267U1 (en) * | 1995-11-17 | 1997-03-20 | Robert Bosch Gmbh, 70469 Stuttgart | Device for testing vehicle brakes |
| CN201184844Y (en) * | 2007-12-11 | 2009-01-21 | 上海西派埃自动化仪表工程有限责任公司 | Portable braking property tester |
| CN101886981B (en) * | 2010-06-30 | 2011-11-16 | 山东交通学院 | Adjustable-axle distance roller device |
| CN101979987B (en) * | 2010-09-16 | 2012-05-23 | 山东交通学院 | Vehicle brake detection table with acceleration simulation function |
| CN202119627U (en) * | 2011-03-21 | 2012-01-18 | 中国汽车技术研究中心 | Brake integration detection system platform used for finished automobile road test |
| CN103105299A (en) * | 2013-02-21 | 2013-05-15 | 中国人民解放军军事交通学院 | Axle weight and brake and vehicle speed combined test bench |
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