CN108663149A - The internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives - Google Patents
The internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives Download PDFInfo
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- CN108663149A CN108663149A CN201810735512.0A CN201810735512A CN108663149A CN 108663149 A CN108663149 A CN 108663149A CN 201810735512 A CN201810735512 A CN 201810735512A CN 108663149 A CN108663149 A CN 108663149A
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- 230000001681 protective effect Effects 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 9
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- 238000009413 insulation Methods 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 7
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- 239000000203 mixture Substances 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
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- 238000003745 diagnosis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
- G01L3/242—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity by measuring and simultaneously multiplying torque and velocity
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention discloses a kind of internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives, including pedestal, main shaft, encoder, torque dynamometer and turns Grains, and the main shaft is fixedly mounted on the base by bearing；Suo Shu Zhuan Grains are fixed on the main shaft, and the main shaft provides resistance by permanent magnet synchronous motor；The torque dynamometer is used to measure the rotating speed and corner of the main shaft for measuring the reaction force that the rotor assembly generates the stator module in the electromagnetic force generated by stator module, the encoder.The present invention provides a kind of compact-sized, difficulty of processing is low, and control accuracy is high, and detection data is reliable, good heat dissipation effect and the chassis dynamometer for being particularly suitable for high-power, big torque.
Description
Technical field
The present invention relates to automotive inspection equipment technical field more particularly to a kind of internal rotor bottoms that permanent magnet synchronous motor directly drives
Disk dynamometer machine.
Background technology
Chassis dynamometer is a kind of room being used for testing the performances such as vehicle dynamic quality, multi-state discharge index, fuel oil index
Interior bench test equipment, road simulation dynamometer calculate road analogy equation, loading device are used in combination by roller simulated roadway
It is simulated, realizes the accurate simulation to each operating mode of automobile, it can be used for the load debugging of automobile, and diagnosis automobile is in loading condition
The failure of lower appearance；Chassis dynamometer is easy to use, and dependable performance is not influenced by external condition.In the premise for the automobile that do not disintegrate
Under, it can quickly and accurately detect each system of automobile, the performance of component.Chassis dynamometer both can be used for automobile section
Experiment is learned, maintenance conditions are can be used for.
There are two types of basic structures for current motor-type chassis dynamometer：One is by dynamometer, rotary drum, variable combination flywheel
Three big element coaxial connection composition of group, wherein dynamometer provide resistance to driving wheel of vehicle by rotary drum, absorb wheel operating production
Raw mechanical work, while measuring rotary drum rotating speed and acting on torque on rotary drum.It detects in work, including motor and rotary drum inertia
Flywheel group inertia inside provides inertia force when variable-speed operation, and the vehicle of different inertia is adapted to different flywheels.
Another structure is removal flywheel group, and the inertia of mechanical flywheel group is replaced using the equivalent electric simulation inertia of dynamometer machine generation
Power, instead of the mechanical inertia of flywheel group.
Chinese patent (application number：CN00226144.8；Publication date：2000.12.27) a kind of chassis dynamometer is disclosed,
Include with calculate, the at the uniform velocity resistance of store function, compensation inertia force, mechanical loss setting apparatus, essence be motor with
Rotary drum is integrated.The rotor of asynchronous machine as dynamometer machine is fixed in rotary drum, and stator is fixed on main shaft, on main shaft
Force snesor is filled between the arm of force and engine base, the resistance that motor is provided to rotary drum is measured by force snesor.Rotary drum two side ends cover
If induced draft plate, cooling wind is introduced using the rotation of rotary drum, does not set cooling blower separately.The chassis dynamometer has compact-sized, system
The advantage that installation cost is low, floor space is small is made, especially suitable for single driving wheel or more driving wheels are coaxial and wheelspan is small vehicle
, but the detection of big load, high-power special vehicle can not be adapted to, reason is：1, the dynamometer machine motor stator component is set
In turning the inner cavities Grains, confined space is formd, although realizing from cooling, in high-power, the slow-speed of revolution heavy vehicle sensing chamber
When, motor generation heat is huge, and since itself rotating speed is low, by the cooling fin on Zhuan Grains, can not complete the heat dissipation drop of motor
Temperature greatly influences the performance of motor；2, asynchronous machine belongs to induction machine, and full electrical inertia control accuracy is poor；3, detection is big carries
Lotus, high-power special vehicle need larger torsion load, need the motor stator of large radius, and the motor stator of large radius adds
Work difficulty is big, and cost is higher；4, Zhuan Grains are installed by bearing on main shaft, can be to the torque measuring of main shaft in Zhuan Grains rotary courses
Amount has an impact, and influences the accuracy of test data；5, in the environment warehouse of detection vehicle, the heat distributed can be to the temperature of warehouse
Degree has an impact.
Invention content
The object of the present invention is to provide a kind of compact-sized, difficulty of processing is low, and control accuracy is high, and detection data is reliable, dissipates
Thermal effect is good and is particularly suitable for the chassis dynamometer of high-power, big torque.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives, including pedestal, main shaft, encoder, torque measurement
Device is Ji Zhuan Grains, the main shaft are fixedly mounted by bearing on the pedestal；Suo Shu Zhuan Grains are fixed on the main shaft, the main shaft
Resistance is provided by permanent magnet synchronous motor, the permanent magnet synchronous motor includes stator module and rotor assembly；The stator module is solid
Dingan County provides the resistance magnetic field of rotation for the rotor assembly on the torque dynamometer；Described in magnetic property
Rotor assembly is fixedly installed on the main shaft, corresponding with the stator module；The torque dynamometer is described for measuring
The reaction force that rotor assembly generates the stator module in the electromagnetic force generated by stator module, the encoder are used
In the rotating speed and corner that measure the main shaft.
Preferably, the torque dynamometer includes rotating part, stationary part and pressure sensor；The rotating part is rotatably
It is connected in the stationary part；The pressure sensor is placed between one stationary part of the rotating part, for incuding the rotation
The opposite torsion with stationary part when portion rotates；The rotating part center is equipped with the through-hole passed through for the main shaft, the stator
Component is fixedly mounted on the rotating part；The stationary part is fixedly mounted on the base；Advantage is that this is especially
Torque dynamometer structure after optimization can directly be bolted with stator module, reduce the volume of equipment, and reduce torsion
Square transmission mechanism, the response speed for the DATA REASONING for being faster, more precisely.
Preferably, the rotor assembly includes rotor pedestal and several is distributed on the rotor pedestal around spindle axis line
Magnet steel substrate, the rotor pedestal is fixedly mounted on the main shaft；Advantage is：The rotor pedestal is the magnetic
Base steel this offer one can facilitate the installation of magnet steel substrate, and make motor rotor component and main shaft with the template of precise positioning
Separate machined can be carried out, difficulty of processing is reduced, facilitates and is designed using removable connection type, facilitates replacement, the dimension in later stage
Shield.
Preferably, the stator module includes stator base and stator unit, and the stator base is fixedly mounted on institute
It states on main shaft, the stator unit is fixedly mounted in the stator base；Advantage is：The stator base is institute
It states stator unit and location and installation platform is provided, the groove for being adapted to the stator unit can be equipped on the stator unit, it is convenient fixed
The positioning of subelement, make be equipment assembling process it is easier, moreover it is possible to ensure installation quality well.
Preferably, the stator unit is made of several stator modules in sector structure；The single stator modules packet
The stator winding for including stator core and being wrapped in the stator core；Advantage is that modular design is broken
The technique of conventional stator core integral manufacturing, reduces the difficulty of processing of large radius stator core, principle is by stator core
Be divided into it is several can independent control stator modules, precisely read the relative position of rotor and stator in encoder, each
Single stator modules generate specific magnetic field under the action of controller, are generated to the single magnet steel substrate by its magnetic field same
The electromagnetic force of direction of rotation, common combination forms the electromagnetic force of a rotation, and then provides simulated resistance or the moment of inertia Wei Zhuan Grains,
If single stator modules damage, more allotment of the controller to single stator modules, equipment still can operate；When reparation, only
Single stator modules are needed to change, traditional motor stator is compared, it, can not normal work once damage, equipment shut down immediately
It needs to replace entire stator when making, and repairing.
Preferably, stator base capping structure in a ring, axial line of the stator modules around the stator base
It is distributed on the inner wall of the stator base.
Preferably, the stator base tail end is in uncovered structure；The permanent magnet synchronous motor is covered by protective cover, is coated at
The protective cover in the stator base is fixed on the base, and advantage is：Increase stator module and the external world
Contact area, the circulation of convenient air, be turned up radiating efficiency；The thermal insulation layer is effectively by the temperature of motor and place ring
Border storehouse completely cuts off, and prevents the temperature that the temperature generated in motor operation course tests environment storehouse from having an impact.
Preferably, air inlet and gas outlet are offered on the protective cover, inner wall is equipped with thermal insulation layer；The air inlet with it is outer
The quenching system in portion connects；Advantage is：External quenching system introduces, and the heat dissipation for accelerating motor hastens, may make
Motor in best operating temperature, enhances the reliability of equipment, the heat taken away is discharged directly to ring for a long time
Outside the storehouse of border, the influence to environment storehouse temperature is also avoided.
Preferably, the encoder includes the sensing element of code-disc and the induction code-disc, and the code-disc is mounted on main shaft
Or on rotor assembly, the sensing element is mounted on the torque dynamometer or stator module, corresponding with the code-disc；Its
Advantageous effect is：Rotating speed of the encoder to main shaft, the corner for efficiently utilizing permanent magnet synchronous motor itself are read out, and are carried
The high utilization rate of component, saves cost.
Compared with prior art, the beneficial effects of the invention are as follows:1, Zhuan Grains to vehicle when carrying out test job, by permanent magnetism
Synchronous motor directly provides electromagnetic resistance to main shaft, reduces intermediate transmission parts, improves the controllability of equipment, and control
Precision is high, enhances the accurate fixed of detection data；2, motor uses modular design, reduces the difficult processing of motor stator
Degree, has saved generation cost, especially when producing large radius stator module；3, the design of protective cover is in addition to motor itself
Outside protective effect, it is additionally operable to motor and environment storehouse carrying out thermal isolation, the heat generated when preventing motor from working produces environment storehouse
It is raw to influence；4, the torque dynamometer with motor stator component of unique design are cleverly combined, and reduce equipment occupation space so that
Device structure is compacter.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for the internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives in embodiment one；
Fig. 2 is a kind of structural representation for the internal rotor chassis dynamometer part that permanent magnet synchronous motor directly drives in embodiment one
Figure；
Fig. 3 is the structural schematic diagram of the torque dynamometer；
Fig. 4 is the structural schematic diagram of rotor assembly and stator module in embodiment one；
Fig. 5 is the structural schematic diagram of the protective cover；
Fig. 6 is a kind of internal rotor chassis dynamometer structural schematic diagram that permanent magnet synchronous motor directly drives in embodiment two；
Fig. 7 is a kind of structural representation for the internal rotor chassis dynamometer part that permanent magnet synchronous motor directly drives in embodiment two
Figure；
Fig. 8 is the structural schematic diagram of stator module in embodiment two；
Fig. 9 is a kind of structural schematic diagram for the internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives in embodiment three；
Figure 10 is a kind of structural representation for the internal rotor chassis dynamometer part that permanent magnet synchronous motor directly drives in embodiment three
Figure；
In figure：1, pedestal；11, bottom plate；12, support column；2, main shaft；3, bearing；4, encoder；41, sensing element；42、
Code-disc；5, protective cover；51, air inlet；52, gas outlet；53, thermal insulation layer；6, stator module；61, stator base；62, stator list
Member；62-1, stator modules；7, key；8, rotor assembly；81, rotor pedestal；82, magnet steel substrate；9, torque dynamometer；91, static
Portion；92, pressure sensor；93, rotating part；93-1, seam allowance；93-2, through-hole；10, Zhuan Grains.
Specific implementation mode
Below in conjunction with the attached drawing in the present invention, technical scheme of the present invention is clearly and completely described, it is clear that
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention
Example, all other embodiment that those of ordinary skill in the art are obtained under the conditions of not making creative work belong to
The scope of protection of the invention.
Embodiment one
As shown in Figs. 1-5, a kind of internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives, including pedestal 1, main shaft 2, volume
Code device 4,9 Ji Zhuan Grains 10 of torque dynamometer, the pedestal 1 include bottom plate 11 and are arranged support column 12 in 11 both sides of the bottom plate
Composition；The main shaft 2 is fixedly mounted on by bearing 3 between the support column 12；Suo Shu Zhuan Grains 10 are fixed on the main shaft 2
On, the main shaft 2 provides electromagnetic resistance come analog mechanical inertia by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes stator
Component 6 and rotor assembly 8；The stator module 6 is fixedly mounted on the torque dynamometer 9, is provided for the rotor assembly
The resistance magnetic field of rotation；The rotor assembly 8 with magnetic property is fixedly installed on the main shaft 2, with the stator pack
Part 6 is corresponding；The torque dynamometer 9 is for measuring the rotor assembly 8 in the electromagnetic force generated by stator module 6 pair
The reaction force that the stator module 6 generates, the encoder 4 are used to measure the rotating speed and corner of the main shaft 2.
Preferably, the torque dynamometer 9 includes rotating part 93, stationary part 91 and pressure sensor 92；The rotating part
93 are rotatably connected to by bearing in the stationary part 91；The pressure sensor 92 be placed in the rotating part 93 with it is static
Between portion 91, for incuding the opposite torsion with stationary part 91 when the rotating part 93 rotates；93 center of the rotating part is equipped with
For the through-hole 93-2 that the main shaft 2 passes through, the stator module 6 is fixedly mounted on the rotating part 93, the rotation
Portion 93 is equipped with the seam allowance 93-1 for positioning the stator module 6；The stationary part 91 is fixedly mounted on the support column 12
On；The rotor assembly 8 includes rotor pedestal 81 and several magnet steel being distributed on around 2 axial line of main shaft on the rotor pedestal 81
Substrate 82, the rotor pedestal 81 are fixedly mounted by key 7 on the main shaft 2；The stator module 6 includes stator base 61
And stator unit 62, the stator base 61 are fixedly mounted on the rotating part 93, the stator unit 62 is fixedly mounted on
In the stator base 61；Further, the stator unit 62 is by several stator modules 62-1 groups in fan-shaped ring structure
At；The single stator modules 62-1 includes stator core and the stator winding that is wrapped in the stator core；It is described fixed
Capping structure, the stator modules 62-1 are distributed on the stator to sub-base 61 around the axial line of the stator base 61 in a ring
In the inner circumferential wall of pedestal 61；Further, 61 tail end of the stator base is in uncovered structure；The permanent magnet synchronous motor by
Protective cover 5 covers, and the protective cover 5 being coated in the stator base 61 is fixed on the support column 12；The protection
Air inlet 51 and gas outlet 52 are offered on cover 5, inner wall is equipped with thermal insulation layer 53；The air inlet 51 connects with external quenching system
It connects；The encoder 4 includes code-disc 42 and incudes the sensing element 41 of the code-disc 42, and the code-disc 42 is mounted on main shaft,
The sensing element 41 is mounted in the stator base 61, corresponding with the code-disc 42.
When work, vehicle tyre is contacted Yu Zhuan Grains 10, and the tire belt Dong Zhuan Grains 10 for starting rear vehicle rotate, and at this point, turning
Grains 10 is under the stator module 6 of permanent magnet synchronous motor and the electromagnetic force of rotor assembly 8, certainly using full electric inertia simulation technology
Dynamic resistance of simulating vehicle during road driving, and then realize the measurement to vehicle travel process parameters, the volume
Code device 4 is used to detect the rotating speed and corner of main shaft 2, and the stator module 6 generates power to the rotor assembly 8 being fixed on Zhuan Grains 10
While, since power is mutual, so rotor assembly 8 also can generate a reaction force, this reaction force to stator module 6
Pass to 9 data measured of torque dynamometer.
Embodiment two
As shown in figs 6-8, a kind of internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives, including pedestal 1, main shaft 2, volume
Code device 4,9 Ji Zhuan Grains 10 of torque dynamometer, the pedestal 1 include bottom plate 11 and are arranged support column 12 in 11 both sides of the bottom plate
Composition；The main shaft 2 is fixedly mounted on by bearing 3 between the support column 12；Suo Shu Zhuan Grains 10 are fixed on the main shaft 2
On, the main shaft 2 provides electromagnetic resistance come analog mechanical inertia by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes stator
Component 6 and rotor assembly 8；The stator module 6 is fixedly mounted on the torque dynamometer 9, is provided for the rotor assembly
The resistance magnetic field of rotation；The rotor assembly 8 with magnetic property is fixedly installed on the main shaft 2, with the stator pack
Part 6 is corresponding；The torque dynamometer 9 is for measuring the rotor assembly 8 in the electromagnetic force generated by stator module 6 pair
The reaction force that the stator module 6 generates, the encoder 4 are used to measure the rotating speed and corner of the main shaft 2.
Preferably, the torque dynamometer 9 includes rotating part 93, stationary part 91 and pressure sensor 92；The rotating part
93 are rotatably connected to by bearing in the stationary part 91；The pressure sensor 92 be placed in the rotating part 93 with it is static
Between portion 91, for incuding the opposite torsion with stationary part 91 when the rotating part 93 rotates；93 center of the rotating part is equipped with
For the through-hole 93-2 that the main shaft 2 passes through, the stator module 6 is fixedly mounted on the rotating part 93, the rotation
Portion 93 is equipped with the seam allowance 93-1 for positioning the stator module 6；The stationary part 91 is fixedly mounted on the support column 12
On；The rotor assembly 8 includes rotor pedestal 81 and several magnet steel being distributed on around 2 axial line of main shaft on the rotor pedestal 81
Substrate 82, the rotor pedestal 81 of disc-shaped structure, which is bolted, to be installed on the main shaft 2；The stator module 6 wraps
Stator base 61 and stator unit 62 are included, the stator base 61 is fixedly mounted on the rotating part 93, the stator list
Member 62 is fixedly mounted in the stator base 61；Further, the stator unit 62 by several in fan-shaped disk-like structure
Stator modules 62-1 compositions；The single stator modules 62-1 includes that stator core and being wrapped in the stator core is determined
Sub- winding；The capping structure in a ring of the stator base 61, axial lines of the stator modules 62-1 around the stator base 61
It is distributed on the end face of the stator base 61；Further, 61 tail end of the stator base is in uncovered structure；The permanent magnetism
Synchronous motor is covered by protective cover 5, and the protective cover 5 being coated in the stator base 61 is fixed on the support column 12
On；Air inlet 51 and gas outlet 52 are offered on the protective cover 5, inner wall is equipped with thermal insulation layer 53；The air inlet 51 and outside
Quenching system connection；The encoder 4 includes code-disc 42 and incudes the sensing element 41 of the code-disc 42, and the code-disc 42 is pacified
On main shaft, the sensing element 41 is mounted in the stator base 61, corresponding with the code-disc 42.
When work, vehicle tyre is contacted Yu Zhuan Grains 10, and the tire belt Dong Zhuan Grains 10 for starting rear vehicle rotate, and at this point, turning
Grains 10 is under the stator module 6 of permanent magnet synchronous motor and the electromagnetic force of rotor assembly 8, certainly using full electric inertia simulation technology
Dynamic resistance of simulating vehicle during road driving, and then realize the measurement to vehicle travel process parameters, the volume
Code device 4 is used to detect the rotating speed and corner of main shaft 2, and the stator module 6 generates power to the rotor assembly 8 being fixed on Zhuan Grains 10
While, since power is mutual, so rotor assembly 8 also can generate a reaction force, this reaction force to stator module 6
Pass to 9 data measured of torque dynamometer.
Embodiment three
As shown in figs. 9-10, a kind of internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives, including pedestal 1, main shaft 2,
Encoder 4,9 Ji Zhuan Grains 10 of torque dynamometer, the pedestal 1 include bottom plate 11 and are arranged support column in 11 both sides of the bottom plate
12 compositions；The main shaft 2 is fixedly mounted on by bearing 3 between the support column 12；Suo Shu Zhuan Grains 10 are fixed on the main shaft 2
On, the main shaft 2 provides electromagnetic resistance come analog mechanical inertia by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes stator
Component 6 and rotor assembly 8；The stator module 6 is fixedly mounted on the torque dynamometer 9, is provided for the rotor assembly
The resistance magnetic field of rotation；The rotor assembly 8 with magnetic property is fixedly installed on the main shaft 2, with the stator pack
Part 6 is corresponding；The torque dynamometer 9 is for measuring the rotor assembly 8 in the electromagnetic force generated by stator module 6 pair
The reaction force that the stator module 6 generates, the encoder 4 are used to measure the rotating speed and corner of the main shaft 2.
Preferably, the permanent magnet synchronous motor is covered by protective cover 5, the protection being coated in the stator base 61
Cover 5 is fixed on the support column 12；Air inlet 51 and gas outlet 52 are offered on the protective cover 5, inner wall is equipped with thermal insulation layer
53；The air inlet 51 is connect with external quenching system；The torque dynamometer 9 includes rotating part 93, stationary part 91 and pressure
Force snesor 92；The rotating part 93 is rotatably connected to by bearing in the stationary part 91；The pressure sensor 92
It is placed between the rotating part 93 and stationary part 91, for incuding the opposite torsion with stationary part 91 when the rotating part 93 rotates
Power；93 center of the rotating part is equipped with the through-hole 93-2 passed through for the main shaft 2, and the stator module 6 is fixedly mounted
On the rotating part 93, the rotating part 93 is equipped with the seam allowance 93-1 for positioning the stator module 6；The stationary part 91
It is fixedly mounted on the protective cover 5；The rotor assembly 8 includes rotor pedestal 81 and several is distributed on around 2 axial line of main shaft
The rotor pedestal 81 of magnet steel substrate 82 on the rotor pedestal 81, disc-shaped structure is bolted the installation master
On axis 2；The stator module 6 includes stator base 61 and stator unit 62, and the stator base 61 is fixedly mounted on described
On rotating part 93, the stator unit 62 is fixedly mounted in the stator base 61；Further, the stator unit 62 by
Several stator modules 62-1 compositions in fan-shaped disk-like structure；The single stator modules 62-1 includes stator core and winding
Stator winding in the stator core；The capping structure in a ring of the stator base 61, the stator modules 62-1 is around institute
The axial line for stating stator base 61 is distributed on the end face of the stator base 61；Further, 61 tail of the stator base
End is in uncovered structure；The encoder 4 includes code-disc 42 and incudes the sensing element 41 of the code-disc 42, and the code-disc 42 is installed
On main shaft, the sensing element 41 is mounted on the torque dynamometer 9, corresponding with the code-disc 42.
When work, vehicle tyre is contacted Yu Zhuan Grains 10, and the tire belt Dong Zhuan Grains 10 for starting rear vehicle rotate, and at this point, turning
Grains 10 is under the stator module 6 of permanent magnet synchronous motor and the electromagnetic force of rotor assembly 8, certainly using full electric inertia simulation technology
Dynamic resistance of simulating vehicle during road driving, and then realize the measurement to vehicle travel process parameters, the volume
Code device 4 is used to detect the rotating speed and corner of main shaft 2, and the stator module 6 generates power to the rotor assembly 8 being fixed on Zhuan Grains 10
While, since power is mutual, so rotor assembly 8 also can generate a reaction force, this reaction force to stator module 6
Pass to 9 data measured of torque dynamometer.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of internal rotor chassis dynamometer that permanent magnet synchronous motor directly drives, including pedestal, main shaft, encoder, torque dynamometer
And turning Grains, the main shaft is fixedly mounted on the base by bearing；Suo Shu Zhuan Grains are fixed on the main shaft, and feature exists
In the main shaft provides resistance by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes stator module and rotor assembly；It is described
Stator module is fixedly mounted on the torque dynamometer, and the resistance magnetic field of rotation is provided for the rotor assembly；With permanent magnetism
The rotor assembly of characteristic is fixedly installed on the main shaft, corresponding with the stator module；The torque dynamometer is used
The reaction force that the stator module is generated when measuring the rotor assembly in the electromagnetic force generated by stator module；Institute
State rotating speed and corner of the encoder for measuring the main shaft.
2. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 1 directly drives, which is characterized in that institute
It includes rotating part, stationary part and pressure sensor to state torque dynamometer；The rotating part is rotatably connected to the stationary part
On；The pressure sensor is placed between the rotating part and stationary part, when for incuding rotating part rotation it is opposite with it is quiet
The torsion of stop；The rotating part center, which is equipped with, is used for the through-hole that the main shaft passes through, described in the stator module fixed installation
On rotating part；The stationary part is fixedly mounted on the base.
3. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 2 directly drives, which is characterized in that institute
Rotating part is stated equipped with the seam allowance for positioning the stator module.
4. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 1 directly drives, which is characterized in that institute
It includes rotor pedestal and several magnet steel substrates being distributed on around spindle axis line on the rotor pedestal to state rotor assembly, described turn
Sub-base is fixedly mounted on the main shaft.
5. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 2 directly drives, which is characterized in that institute
It includes stator base and stator unit to state stator module, and the stator base is fixedly mounted on the rotating part, described fixed
Subelement is fixedly mounted in the stator base.
6. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 5 directly drives, which is characterized in that institute
Stator unit is stated to be made of several stator modules in sector structure；The single stator modules include stator core and winding
Stator winding in the stator core.
7. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 6 directly drives, which is characterized in that institute
Stator base capping structure in a ring is stated, the stator modules are distributed on the stator base around the axial line of the stator base
Inner wall on.
8. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 5 or 6 directly drives, feature exist
In the stator base tail end is in uncovered structure；The permanent magnet synchronous motor is covered by protective cover, is coated at the stator base
On the protective cover fix on the base.
9. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 8 directly drives, which is characterized in that institute
It states and offers air inlet and gas outlet on protective cover, inner wall is equipped with thermal insulation layer；The air inlet is connect with external quenching system.
10. the internal rotor chassis dynamometer that a kind of permanent magnet synchronous motor according to claim 1 directly drives, which is characterized in that
The encoder includes the sensing element of code-disc and the induction code-disc, and the code-disc is mounted on main shaft or rotor assembly, institute
Sensing element is stated on the torque dynamometer or stator module, it is corresponding with the code-disc.
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| CN201810735512.0A CN108663149B (en) | 2018-07-06 | 2018-07-06 | Inner rotor chassis dynamometer directly driven by permanent magnet synchronous motor |
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| CN201810735512.0A CN108663149B (en) | 2018-07-06 | 2018-07-06 | Inner rotor chassis dynamometer directly driven by permanent magnet synchronous motor |
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| CN108663149A true CN108663149A (en) | 2018-10-16 |
| CN108663149B CN108663149B (en) | 2023-12-19 |
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