CN108692962A - A kind of road vehicle simulation system - Google Patents
A kind of road vehicle simulation system Download PDFInfo
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- CN108692962A CN108692962A CN201710233511.1A CN201710233511A CN108692962A CN 108692962 A CN108692962 A CN 108692962A CN 201710233511 A CN201710233511 A CN 201710233511A CN 108692962 A CN108692962 A CN 108692962A
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- 238000004088 simulation Methods 0.000 title claims abstract description 91
- 238000012360 testing method Methods 0.000 claims abstract description 142
- 238000002474 experimental method Methods 0.000 claims abstract description 104
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 7
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- 238000011161 development Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
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- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- G01M17/04—Suspension or damping
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- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of road vehicle simulation system, the system comprises:Road-Simulating Testing System and test vehicle, wherein:The test vehicle includes experiment power assembly, body structure and chassis system;The experiment power assembly includes:Test speed changer, experiment power source and test clutch;The chassis system includes powertrain mounting system and other chassis structures;The experiment power assembly is identical as the parameter of actual vehicle power assembly;When the test clutch is closed, for the Road-Simulating Testing System by moving come output action power to the experiment power assembly, the active force simulated roadway irregularity causes the active force that the output of the active force and the experiment power source torque of the power assembly random vibration generation generates the powertrain mounting system.The complexity of road vehicle simulation system can be reduced while realizing that dynamic assembly suspension load is accurately simulated using the above scheme.
Description
Technical field
The present invention relates to vehicle simulation and experiment field more particularly to a kind of road vehicle simulation systems.
Background technology
In automotive development, the design of each parts is required to experience repetition test and modification optimization.In order to most as early as possible
The problem of early finding Automobile Design, substantially to shorten the development cycle, reduce development cost, automobile generally requires progress
Actual road test is tested and strengthened to public way, and both experiments are excessively high and influence product there is too long, testing expenses are taken
The problem of development progress.Therefore, there is the Road-Simulating Testing System of the axis suitable for vehicle, the front/rear suspension of vehicle chassis,
For testing the isostructural durability of vehicular chassis system, vehicle body.Although the Road-Simulating Testing System being capable of preferable simulation
Uneven road is along the load caused by powertrain mounting system, but it is outstanding to power assembly to simulate the output of power assembly torque
Set load caused by system.
Powertrain mounting system is a part for chassis system, is assemblied between power assembly and vehicle body frames, can be right
The power transmitted between power assembly and vehicle body frames generates the effect of decaying.Automobile power assembly torque exports and road irregularity draws
The load risen is transferred to by powertrain mounting system on vehicle frame and vehicle body, and existing road simulation experiment system cannot simulate
Power assembly torque export, therefore can not examine power assembly torque output caused by powertrain mounting system, subframe and
The endurance issues of body structure.
To solve the problems, such as this, currently, a kind of method is:A series of torque input being made up of hydraulic cylinder and matched clamps
Device, carrys out the load suffered by powertrain mounting system when simulated road test, but the simulation experiment system it is complicated and
Operating difficulties.Another method is:Lotus directly is loaded to powertrain mounting system by modes such as independent liquid feeding cylinder pressures, is existed
The poor problem of simulation precision.
Invention content
Problems solved by the invention is to reduce vehicle how while realizing that vehicle engine assembly suspension load is accurately simulated
The complexity of road simulation system.
To solve the above problems, the embodiment of the present invention provides a kind of road vehicle simulation system, the system comprises:Road
Simulation experiment system and test vehicle, wherein:The test vehicle, including:Test power assembly, body structure and chassis system
System;The experiment power assembly includes:Test speed changer, experiment power source, jockey and test clutch;The chassis system
System includes powertrain mounting system and other chassis structures;Wherein:The body structure and chassis system of the test vehicle
It is identical as actual vehicle;The output shaft of the experiment power source and the shell of the experiment power source are opposing stationary, and the examination
It tests power source and does not export power;Described test clutch one end is solid by the output shaft of jockey and the experiment power source
Fixed connection, the other end are fixedly connected with the input shaft of the experiment speed changer, realize the experiment speed changer and experiment power source
Between torque transmission or interruption;The experiment power assembly is identical as the parameter of the power assembly in actual vehicle and described
The connection type of the shell of the shell and experiment power source of testing speed changer to each other is identical as in actual vehicle;The road
Simulation experiment system is suitable for when the test clutch engages, total to the experiment power come output action power by moving
At the active force simulated roadway irregularity causes the powertrain mounting system random vibration to the dynamic assembly suspension
The active force that the output of active force and the experiment power source torque that system generates generates the powertrain mounting system.
Optionally, the Road-Simulating Testing System is further adapted for when the test clutch detaches, by moving come defeated
Go out active force to the experiment power assembly, the active force simulated roadway irregularity cause the powertrain mounting system with
The active force that machine vibration generates.The test clutch is that can respond fast, load according to switching value voltage signal engaged/disengaged
The big clutch of torque.
Optionally, the parameter of the power assembly includes:The contour structures of power assembly, the suspension installation point of power assembly
Structure, the suspension installation point connection type of power assembly, the quality of power assembly, is moved the suspension installation point position of power assembly
The rotary inertia of power assembly and the centroid position of power assembly.
Optionally, the Mass Distribution of the experiment speed changer and contour structures are identical as the speed changer in actual vehicle, and
The transmission ratio of the experiment speed changer is identical as the transmission ratio of the preset gear of the speed changer in the actual vehicle.
Optionally, the preset gear is one grade.
Optionally, the test clutch is that can be more than to preset according to switching value voltage signal engaged/disengaged, response speed
Response speed threshold value, and load torque is more than the clutch of preset load torque threshold value.
Optionally, the test clutch is electromagnetism toothed clutches.
Optionally, the Road-Simulating Testing System, including it is following any one:24 channel inertia counter-force road analogy systems
System and 12 channel, half inertia counter-force road simulation system.
Compared with prior art, technical scheme of the present invention has the following advantages:
Since the body structure and chassis system of test vehicle are identical as actual vehicle, the output shaft and power source of power source
Shell it is opposing stationary, and the shell of the power source does not export power, when test clutch is closed, is tried by road analogy
The movement of check system, to export the output of the road and the experiment power source torque that can simulate the test vehicle traveling to institute
State the active force of powertrain mounting system generation, you can to simulate stress of the powertrain mounting system in actual vehicle,
It avoids passing through the modes such as independent liquid feeding cylinder pressure and lotus directly is loaded to powertrain mounting system, therefore dynamic assembly suspension can be improved
System simulation precision loaded, and need not additionally increase hydraulic cylinder and a series of mating in Road-Simulating Testing System
Fixture, therefore the complexity of road vehicle simulation system can also be reduced simultaneously.
Further, when being located at one grade due to vehicle, the transmission ratio in actual vehicle is maximum, dynamic assembly suspension system
When system bears same load, test clutch and the output shaft for testing power source bear torque minimum, therefore, the biography of speed changer is set
It is dynamic more identical than the transmission ratio of one grade of gear with the speed changer in the actual vehicle, it once can be obtained dynamic assembly suspension system
The simulation effect of the suffered maximum load of system, therefore improve testing efficiency.
Further, it is electromagnetism toothed clutches by the way that test clutch is arranged, since the load of electromagnetism toothed clutches is turned round
Square is big, fast response time, therefore can greatly improve the versatility and reliability of test clutch, can also improve the sound of experiment
Answer speed and load capacity.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of road vehicle simulation system in the embodiment of the present invention;
Fig. 2 is the road vehicle simulation system that 24 channel inertia counter-force road simulation systems are used in the embodiment of the present invention
Axonometric projection graph;
Fig. 3 is the road vehicle simulation system that 12 channel, half inertia counter-force road simulation system is used in the embodiment of the present invention
Axonometric projection graph;
Fig. 4 is the power assembly of test vehicle described in the embodiment of the present invention and the axonometric projection graph of transmission shaft;
Fig. 5 is the XZ plan views of the power assembly in the embodiment of the present invention;
Fig. 6 be in the embodiment of the present invention with corresponding sectional view at the A-A in Fig. 5;
Fig. 7 is the structural schematic diagram of 24 channel inertia counter-force road simulation systems in the embodiment of the present invention;
Fig. 8 is the work of the road vehicle simulation system using 24 channel inertia counter-force road simulation systems in inventive embodiments
Make flow chart;
Fig. 9 is the structural schematic diagram of 12 channel, the half inertia counter-force road simulation system 2 in the embodiment of the present invention;
Figure 10 is the road vehicle simulation system using 12 channel, half inertia counter-force road simulation system in the embodiment of the present invention
The work flow diagram of system.
Specific implementation mode
As described above, current road vehicle simulation system, either there is a problem of complicated or there is simulation essence
Spend poor problem.
To solve the above problems, the road vehicle simulation system of the embodiment of the present invention, by the vehicle body that test vehicle is arranged
Structure and chassis system are identical as actual vehicle, and the shell for testing the output shaft and experiment power source of power source is opposing stationary, and
The shell of the experiment power source does not export power, when Control experiment clutch is closed, passes through Road-Simulating Testing System
Movement, it is total to the power come the output that exports the road and the experiment power source torque that can simulate test vehicle traveling
The active force generated at suspension system, you can to simulate stress of the powertrain mounting system in actual vehicle, avoid passing through
The modes such as independent liquid feeding cylinder pressure directly load lotus to powertrain mounting system, therefore can improve suffered by powertrain mounting system
The simulation precision of load, and need not additionally increase hydraulic cylinder and a series of matched clamps in Road-Simulating Testing System, therefore
The complexity of road vehicle simulation system can also be reduced simultaneously.
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Fig. 1 shows a kind of road vehicle simulation system in the embodiment of the present invention, below with reference to Fig. 1, to the simulation
System describes in detail.The simulation system may include:Road-Simulating Testing System 1 ' and test vehicle 2 ', wherein:
The test vehicle 2 ', including:Test power assembly 21 ', body structure and chassis system.The experiment power is total
Include at 21 ':Test speed changer 213 ', experiment power source 211 ' and test clutch 212 '.The chassis system includes power
Assembly suspension system 22 ' and other chassis structures;Wherein:The body structure and chassis system and reality of the test vehicle 2 '
Vehicle is identical.The output shaft of the experiment power source 211 ' and the shell of the experiment power source 211 ' are opposing stationary and described
Experiment power source 211 ' does not export power.Described 212 ' the one end of test clutch and the output shaft of experiment power source 211 ' are fixed
Connection, the other end are fixedly connected with the input shaft of experiment speed changer 213 ', realize experiment gearbox 213 ' and experiment power source
The transmission or interruption of torque between 211 '.The experiment power assembly 21 ' is identical as the parameter of the power assembly in actual vehicle,
And the shell of the experiment speed changer 213 ' and test the shell connection type to each other of power source 211 ' and actual vehicle
It is upper identical.
The Road-Simulating Testing System 1 ' is suitable for when the test clutch 212 ' engages, by moving come defeated
Go out active force to the experiment power assembly 21 ', the active force simulated roadway irregularity causes the dynamic assembly suspension system
The output for the active force and the experiment 211 ' torque of power source that 22 ' random vibrations of system generate the powertrain mounting system
The active force that the powertrain mounting system 22 ' is generated.
In specific implementation, when the test clutch 212 ' detaches, the Road-Simulating Testing System 1 ' can be with
By moving come output action power to the experiment power assembly 21 ', the active force simulated roadway irregularity causes described dynamic
The active force that 22 ' random vibration of power assembly suspension system generates.
In order to improve the test accuracy of road vehicle simulation system, in specific implementation, the parameter of the power assembly can
To include:The contour structures of power assembly, the suspension installation point structure of power assembly, power assembly suspension installation point position,
Suspension installation point connection type, the matter of the quality of power assembly, the rotary inertia of power assembly and power assembly of power assembly
Heart position.
In specific implementation, the Mass Distribution of the experiment speed changer 213 ' and contour structures and the speed change in actual vehicle
Device is identical, and the 213 ' transmission ratio of experiment speed changer is fixed uniquely, and the transmission ratio of the experiment speed changer 213 ' and the reality
The transmission ratio of the preset gear of speed changer on the vehicle of border is identical.
When being in one grade due to vehicle, the transmission ratio in actual vehicle is maximum, and powertrain mounting system 22 ' is held
When by same load, test clutch 212 ' and the output shaft for testing power source 211 ' bear torque minimum.Therefore in the present invention one
In embodiment, the preset gear is one grade.Those skilled in the art according to actual needs, can also set the gear to
Other shelves.
In order to improve test response speed and load capacity, in specific implementation, the test clutch 212 ' can be
Default response speed threshold value can be more than according to switching value voltage signal engaged/disengaged, response speed, and load torque is more than default
Load torque threshold value clutch.In other words, the test clutch 212 ' be can according to switching value voltage signal engage/point
From, the clutch that response is fast and load torque is big.In an embodiment of the present invention, the test clutch 212 ' can be logical
Electrically engage and power off the electromagnetism toothed clutches of separation.
In specific implementation, according to the difference of structure and test method, the Road-Simulating Testing System 1 ' can be selected
Below any one:24 channels (channel) inertia counter-force road simulation system and the half inertia counter-force road 12 channels (channel)
Road simulation system.
To make those skilled in the art more fully understand and realizing the present invention, Fig. 2 shows use 24ch inertia counter-force roads
The axonometric projection graph of the road vehicle simulation system of simulation system.Wherein:X-direction is the negative direction of vehicle forward direction, the side Y
To be directed toward passenger seat direction by driver's seat, Z-direction is perpendicular to ground upwardly direction.As shown in Fig. 2, the vehicle road
Road simulation system includes:24ch inertia counter-forces road simulation system 1 and test vehicle 3.
Fig. 3 shows the axonometric projection of the road vehicle simulation system using half inertia counter-force road simulation systems of 12ch
Figure.As shown in figure 3, the road vehicle simulation system includes:Half inertia counter-force road simulation systems 2 of 12ch and test vehicle 3.
In specific implementation, body structure in test vehicle 3, chassis system part and it is used for standard type Road Simulation Test
Experiment original vehicle it is identical, to power source in the power assembly for the former vehicle of experiment of standard type Road Simulation Test, gearbox and
Clutch needs are adjusted.Wherein, the power source may include at least one of engine or driving motor.
Fig. 4 shows the power assembly of test vehicle described in the embodiment of the present invention and the axonometric projection graph of transmission shaft.Fig. 5
Show the XZ plan views of the power assembly in the embodiment of the present invention.Fig. 6 is sectional view corresponding at the A-A in Fig. 5.Below
With reference to 4~Fig. 6 of figure, describe in detail to the structure of the power assembly of the road vehicle simulation system.
In specific implementation, the experiment power assembly may include experiment power source 4, experiment speed changer 5, experiment clutch
Device 11 and jockey 12.Test power assembly 8 and the power assembly contour structures having the same, identical in actual vehicle
Suspend installation point structure, position, connection type, identical quality, rotary inertia and centroid position.In other words, experiment power is total
At 8 with for the power assembly contour structures having the same of standard type Road Simulation Test, identical suspension installation point structure,
Position, connection type, identical quality, rotary inertia and centroid position.Test the shell and experiment speed changer 5 of power source 4
The connection type of shell is consistent with the connection type in actual vehicle.
In specific implementation, the output shaft 13 of experiment power source 4 is fixedly connected with the shell 14 of experiment power source, that is, is tested
It can not relatively rotate and move between the output shaft 13 of power source 4 and the shell 14 for testing power source.Test the output of power source 4
It is provided with test clutch 11 between axis 13 and the input gear axle 9 for testing speed changer 5.Controller output may be used in experiment user
On-off model, the opening and closing of Control experiment clutch 11, with this come cut off at any time or conjugation test power source 4 with experiment become
Torque between fast device 5 transmits.
In specific implementation, tooth is used between the input gear axle 9 and long output shaft 24 and short output shaft 25 of experiment speed changer 5
Wheel connection, when one grade of the experiment original vehicle speed changer for standard type Road Simulation Test should be equal to by testing the transmission ratio of speed changer 5
Transmission ratio.Test the transmission shaft connection type of speed changer 5 and test vehicle 3 and for former vehicle variator between centers connection side
Formula is identical.
In specific implementation, test clutch 11 by jockey 12 respectively with experiment power source 4 output shaft 13 and
The input gear axle 9 of experiment speed changer 5 is fixedly connected.In specific implementation, can by electromagnetism, hydraulic pressure or it is pneumatic in any
Plant the logical and disconnected of 11 torque transmission paths of mode Control experiment clutch.
It should be noted that according to engine arrangement and type of drive, passenger car can be divided into preposition forerunner (FF), preposition
Rear-guard (FR), preposition 4 wheel driven, in postpone drive (MR), in set 4 wheel driven, postposition rear-guard (RR) and rear mounted tetra.Wherein, preposition forerunner
The passenger car of type, that is, front engine front wheel driving are the arrangements that passenger car is most widely used.
In specific implementation, the present invention shown by embodiment be for the arrangement of preposition forerunner vehicle adjustment after
Obtained experiment power assembly 8, by suitably adjusting, it can also be used to front-engine rear-drive (FR), preposition 4 wheel driven, in postpone drive (MR),
In set the vehicles of the arrangement forms such as 4 wheel driven, postposition rear-guard (RR), rear mounted tetra and tested.
It in specific implementation, can be based on the power source of the vehicle for standard type Road-Simulating Testing System, using machine
Tool or other modes lock the output shaft of power source to ensure that power source output shaft can not rotate to obtain relative to the shell of power source
Power source 4 is tested, one Mass Distribution of processing and fabricating, contour structures can be also redesigned and is used for standard type Road Simulation Test system
The power source of the vehicle of system is identical, and the experiment power source being fixedly connected between output shaft and shell.In order to improve simulation system
Reliability can redesign processing and fabricating experiment power source 4 in an embodiment of the present invention.
It in specific implementation, can be based on the gearbox of the vehicle for standard type Road-Simulating Testing System, using machine
Tool or other modes ensure that gearbox obtains experiment speed changer 5 in one grade, can also redesign one mass of processing and fabricating point
Cloth, contour structures are identical as the gearbox of vehicle of standard type Road-Simulating Testing System, and transmission ratio and the standard of being used for
The identical experiment speed changer of one grade of transmission ratio of gearbox of the vehicle of type Road-Simulating Testing System 5.It should be noted that one grade
For starting gear and the maximum gear of transmission ratio, gear is set as one grade, powertrain mounting system is born equally
When load, test clutch 11, the output shaft for testing power source 4 bear torque minimum.In order to ensure reliability of structure, having
During body is implemented, processing and fabricating experiment speed changer 5 can be redesigned.
In specific implementation, experiment speed changer 5 may include the shell 10 for testing gearbox, experiment transmission input gear
Axis 9 and experiment speed changer gear wheel and differential assembly 15.It includes pinion gear and multi-diameter shaft to test transmission input gear axis 9 to be
The cylindrical parts of combination test 9 one end of transmission input gear axis by bearing support on the shell 10 of experiment gearbox, in
Between section be gear structure, with experiment speed changer gear wheel and differential assembly 15 in gear wheel engage, experiment speed changer input
9 other end of gear shaft is multi-diameter shaft, passes through key connection with test clutch 11.Test speed changer gear wheel and differential assembly 15
By the combined integrated structure of gear wheel and differential assembly, gear wheel is fixedly connected with the shell of differential mechanism.It is big to test speed changer
Differential assembly transmission ratio is identical as preproduction test original vehicle differential mechanism is changed in gear and differential assembly 15, long output shaft 24 and
The output axle construction with the gearbox corresponding position of the vehicle for standard type Road-Simulating Testing System respectively of short output shaft 25
It is identical.
In order to improve the accuracy of road vehicle simulation system, in an embodiment of the present invention, test clutch 11 can be with
For the electromagnetism toothed clutches for engaging power-off separation that are powered.It is fixed by jockey 12 and the output shaft 13 of experiment power source 4
Connection.When needing to simulate power assembly torque, control power supply is powered for test clutch 11, and test clutch 11 engages, real
The torque now tested power source 4 and tested between speed changer 5 transmits.When power assembly torque need not be simulated, power supply is controlled
Power-off, test clutch 11 detach, and the torque between abort power source 4 and experiment speed changer 5 transmits.
To make those skilled in the art more fully understand and realizing that the present invention, Fig. 7 are shown in the embodiment of the present invention
The structural schematic diagram of 24ch inertia counter-force road simulation systems, as shown in fig. 7,24ch inertia counter-forces road simulation system 1 can be with
Including four road simulators, respectively:First road simulator 16, the second road simulator 17, third road simulator 18,
4th road simulator 19 can also include two vehicle body longitudinal restraint devices, respectively:First vehicle body longitudinal restraint device 20
And the second vehicle body longitudinal restraint device 21.Wherein, the first road simulator 16, the second road simulator 17, third road analogy
Device 18,19 properity parameter of the 4th road simulator are identical, and at least there is X to be translatable and around Y-axis to translation, Y-direction translation, Z-direction
Four degree of freedom of rotation are fixedly connected with four wheel hubs of test vehicle, mould respectively instead of four rim for automobile wheel of test vehicle 3
Born at quasi- test vehicle wheel along the power of three axial directions and braking or driving torque.
In specific implementation, the first road simulator is identical with arrangement inside the 4th road simulator, and second
Road simulator is identical with arrangement inside third road simulator, the first road simulator and the second road simulator
The XZ plane mirror images of opposite 24ch inertia counter-forces road simulation system 1 are arranged symmetrically, third road simulator and the 4th road mould
Quasi- device is arranged symmetrically with respect to the XZ plane mirror images of 24ch inertia counter-forces road simulation system 1.
In specific implementation, the first vehicle body longitudinal restraint device 20, the second vehicle body longitudinal restraint device 21 are identical.Its
In, the first vehicle body longitudinal restraint device 20 is fixedly mounted in front of headstock, is connect with body structure by axis pin and fixture.Second
Vehicle body longitudinal restraint device 21 is fixedly mounted on tailstock rear, is connect with vehicle body tail end by axis pin and fixture.Pass through control the
One vehicle body longitudinal restraint device 20 and the action of the second vehicle body longitudinal restraint device 21, may be implemented the longitudinal restraint to vehicle body.
Fig. 8 shows the road vehicle simulation system using 24ch inertia counter-force road simulation systems in inventive embodiments
Work flow diagram, work can be divided into following steps progress:
Step S81:Test vehicle is set.
In specific implementation, the power assembly of test vehicle can be first set, power source output shaft is constrained, so that power source
Output shaft can not be moved with respect to the shell of power source, and then experiment power assembly is installed on test vehicle, then installation examination
Gearbox and test clutch etc. are tested to test vehicle.
Step S82:Test vehicle is installed to 24ch inertia counter-force road simulation systems.
In specific implementation, test vehicle is installed on 24ch inertia counter-force road simulation systems, constrained test vehicle
Vehicle body, that is, control the first vehicle body longitudinal restraint device, the second vehicle body longitudinal restraint device to vehicle body longitudinal restraint.
Step S83:The opening and closing of Control experiment clutch.
In specific implementation, engagement state can be changed by discrete state with Control experiment clutch, realizes experiment power
Torque between source and experiment speed changer transmits.
Step S84:Control the movement of 24ch inertia counter-force road simulation systems.
In specific implementation, the movement of 24ch inertia counter-forces road simulation system 1 can be controlled, is calculated by iterating,
The core wheel load of replicate test vehicle six-freedom degree simulates dynamic assembly suspension to realize based on road vehicle simulation system
Load suffered by system.
Step S85:Discharge the constraint to test vehicle.
In specific implementation, can be after the load simulated experiment for completing powertrain mounting system, Control experiment clutch
Device is discrete state, and the first vehicle body longitudinal restraint device of release, the second vehicle body longitudinal restraint device are vertical to the vehicle body of test vehicle
To constraint.
Fig. 9 shows the structure of the half inertia counter-force road simulation systems 2 of 12ch in the embodiment of the present invention, the 12ch half
Inertia counter-force road simulation system 2 may include two road simulators, and described two road simulators are followed successively by the first road
Simulator 16 and the second road simulator 17, half inertia counter-force road simulation systems 2 of the 12ch can also include two wheels
Support fixture, two wheel supporting fixtures are followed successively by the first wheel supporting fixture 22 and the second wheel supporting fixture 23.First
The structure and performance parameter of road simulator 16 and the second road simulator 17 are identical, at least there is X to be translatable to translation, Y-direction,
Z-direction is translatable and rotates four degree of freedom around Y-axis.First road simulator 16, the second road simulator 17, the first wheel supporting folder
Tool and the second wheel supporting fixture are suitable for four rim for automobile wheel of simulation test vehicle 3 respectively, respectively with four of test vehicle 3
Wheel hub is fixedly connected, the power and braking/driving torque along three axial directions born with simulation test vehicle front-wheel.
Figure 10 shows that the road vehicle in the embodiment of the present invention using half inertia counter-force road simulation systems of 12ch is simulated
The work flow diagram of system, work can be divided into following steps progress:
Step S101:Test vehicle is set.
In specific implementation, step S101 can refer to step S81 and implement, and details are not described herein.
It should be noted that since the first wheel supporting fixture and the second wheel supporting fixture have been realized in instruction carriage
Length travel constraint, therefore use when half inertia counter-force road simulation systems of 12ch without being separately provided to the longitudinal direction of vehicle body about
Beam.
Step S102:The opening and closing of Control experiment clutch.
In specific implementation, step S102 can refer to step S83 and implement, and details are not described herein.
Step S103:Control the movement of half inertia counter-force road simulation systems 2 of 12ch.
In specific implementation, the movement of half inertia counter-force road simulation systems 2 of 12ch can be controlled, the meter that iterates is passed through
It calculates, constantly corrects half inertia counter-force road simulation systems of 12ch, 2 drive signal, the core wheel of replicate test vehicle six-freedom degree carries
Lotus, to realize based on the load suffered by road vehicle simulation system reproduction powertrain mounting system.
Step S104:Control experiment clutch is discrete state.
In specific implementation, can be after the load simulated experiment for completing powertrain mounting system, Control experiment clutch
Device is discrete state.
To sum up, road vehicle simulation system in the embodiment of the present invention, can be with high precision and when simulated road test in real time
Load suffered by powertrain mounting system, the data without being obtained to detection carry out specially treated.And the knot of simulation system
Structure is simple, easy to operate, the test fixture and hydraulic cylinder complicated without additional setting, while the method for simulation test is with fine
Versatility and operability.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in computer readable storage medium, to store
Medium may include:ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (8)
1. a kind of road vehicle simulation system, which is characterized in that including:Road-Simulating Testing System and test vehicle, wherein:
The test vehicle, including:Test power assembly, body structure and chassis system;The experiment power assembly includes:Examination
Test speed changer, experiment power source and test clutch;The chassis system includes powertrain mounting system and other chassis knot
Component;Wherein:The body structure and chassis system of the test vehicle are identical as actual vehicle;The output of the experiment power source
The shell of axis and the experiment power source is opposing stationary, and the experiment power source does not export power;The test clutch
One end is fixedly connected by jockey with the output shaft of the experiment power source, the input of the other end and the experiment speed changer
Axis is fixedly connected, and is realized the experiment speed changer and is tested the transmission or interruption of torque between power source;The experiment power is total
At identical as the parameter of the power assembly in actual vehicle, and the shell of the experiment speed changer and test power source shell that
Connection type around here is identical as in actual vehicle;
The Road-Simulating Testing System is suitable for when the test clutch engages, by moving come output action power to institute
Experiment power assembly is stated, the active force simulated roadway irregularity causes the power assembly random vibration to the power assembly
The work that the output of active force and the experiment power source torque that suspension system generates generates the powertrain mounting system
Firmly.
2. road vehicle simulation system according to claim 1, which is characterized in that the Road-Simulating Testing System, also
Suitable for when the test clutch detaches, by moving come output action power to the experiment power assembly, the active force
Simulated roadway irregularity causes the active force that the powertrain mounting system random vibration generates.
3. road vehicle simulation system according to claim 1, which is characterized in that the parameter of the power assembly includes:
The contour structures of power assembly, the suspension installation point structure of power assembly, the suspension installation point position of power assembly, power assembly
Suspension installation point connection type, the quality of power assembly, the rotary inertia of power assembly and power assembly centroid position.
4. road vehicle simulation system according to claim 1, which is characterized in that the Mass Distribution of the experiment speed changer
And contour structures are identical as the speed changer in actual vehicle, and on the transmission ratio and the actual vehicle of the experiment speed changer
The transmission ratio of the preset gear of speed changer is identical.
5. road vehicle simulation system according to claim 4, which is characterized in that the preset gear is one grade.
6. road vehicle simulation system according to claim 1, which is characterized in that the test clutch is can be according to opening
Voltage signal engaged/disengaged is measured in pass, response speed is more than default response speed threshold value, and load torque is turned round more than preset load
The clutch of square threshold value.
7. road vehicle simulation system according to claim 6, which is characterized in that the test clutch is electromagnetism flute profile
Clutch.
8. road vehicle simulation system according to claim 1, which is characterized in that the Road-Simulating Testing System, packet
Include it is following any one:
Half inertia counter-force road simulation system of 24 channel inertia counter-force road simulation systems and 12 channel.
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| CN201710233511.1A CN108692962B (en) | 2017-04-11 | 2017-04-11 | Vehicle road simulation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233511.1A CN108692962B (en) | 2017-04-11 | 2017-04-11 | Vehicle road simulation system |
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| CN108692962B CN108692962B (en) | 2021-01-15 |
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