CN108663148A - The chassis dynamometer of permanent magnet synchronous motor driving - Google Patents
The chassis dynamometer of permanent magnet synchronous motor driving Download PDFInfo
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- CN108663148A CN108663148A CN201810735369.5A CN201810735369A CN108663148A CN 108663148 A CN108663148 A CN 108663148A CN 201810735369 A CN201810735369 A CN 201810735369A CN 108663148 A CN108663148 A CN 108663148A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 47
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- 230000001681 protective effect Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000004088 simulation Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The present invention discloses a kind of chassis dynamometer of permanent magnet synchronous motor driving, includes 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, and the permanent magnet synchronous motor includes shaft, shell, stator module and rotor assembly；The stator module is fixedly mounted on the housing, and the resistance magnetic field of rotation is provided for the rotor assembly；The rotor assembly with magnetic property is fixedly installed in the shaft, corresponding with the stator module；The torque dynamometer is placed between the main shaft and shaft, for measuring the driving torque between axis；The encoder is used to measure the rotating speed and corner of the shaft.The object of the present invention is to provide a kind of simple in structure, difficulty of processing is low, and control accuracy is high, and detection data is reliable, perfect heat-dissipating, and adapts to the chassis dynamometer of extreme environment in environment storehouse.
Description
Technical field
The present invention relates to the Chassis dynamometers that automotive inspection equipment technical field more particularly to a kind of permanent magnet synchronous motor drive
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；Its group together with five gas analyzer, transmission-type smoke meter, engine tachometer and computer automatic control system
At an Integrated Measurement System to measure the motor vehicle exhaust emission under different operating modes, chassis dynamometer is easy to use, dependable performance
It is not influenced by external condition.Under the premise of not disintegrating automobile, each system of automobile, component can be quickly and accurately detected
Performance.Chassis dynamometer both can be used for automobile scientific experimentation, can be used for maintenance conditions.
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.And as detection deepens continuously, the test of vehicle is increasingly refined, data precision
It is required that it is also higher, all it is to need to carry out in environment storehouse, environment storehouse can be real when most of chassis dynamometers are tested therefore
Existing cold-starting automobile experiment, the discharge examination of automobile thermocycling, frost mist simulation test, harmful gas in vehicle simulation test, vehicle
It the reliable experimental situation such as tests, the examination and test of products and the exploitation service of new product, the construction rule in environment storehouse is provided for Railway Car Plant
Lattice generally have higher requirements in temperature control aspect：1, temperature examination range:- 45 DEG C -65 DEG C, control accuracy ± 1 DEG C；2, cooling speed
Rate:Zero load is down to -45 DEG C in 360 minutes with temperature in inside cabin from+25 DEG C；3, heating rate:Unloaded 60 minutes with temperature in inside cabin
65 DEG C are risen to from+25 DEG C；4, cold start-up experiment is carried out under low temperature, not temperature control after startup；5, hot environment, 35 DEG C of temperature-are simulated
65 DEG C, temperature 60%RH-60%RH.And in dynamometer machine detection process, in order to preferably protect equipment, it is desirable to be not required to
When dynamometer machine being wanted to work, dynamometer machine can be isolated with environment storehouse, wait for that the temperature adjustment of environment storehouse finishes, then dynamometer machine is moved to ring
In the storehouse of border, vehicle is tested.
Invention content
The object of the present invention is to provide a kind of simple in structure, difficulty of processing is low, and control accuracy is high, and detection data is reliable, dissipates
Good in thermal property, and adapt to the chassis dynamometer of extreme environment in environment storehouse.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of chassis dynamometer of permanent magnet synchronous motor driving, include pedestal, main shaft, encoder, torque dynamometer and
Turn Grains, the main shaft is fixedly mounted on the base by bearing；Suo Shu Zhuan Grains are fixed on the main shaft, the main shaft by
Permanent magnet synchronous motor provides resistance, and the permanent magnet synchronous motor includes shaft, shell, stator module and rotor assembly；It is described
Stator module is fixedly mounted on the housing, and the resistance magnetic field of rotation is provided for the rotor assembly；With magnetic property
The rotor assembly is fixedly installed in the shaft, corresponding with the stator module；The torque dynamometer is placed in described
Between main shaft and shaft, for measuring the driving torque between axis；The encoder is used to measure the rotating speed of the shaft and turns
Angle.
Preferably, the shell includes cylindrical cavity, front pressuring plate and rear fender, and the front pressuring plate and rear fender are removable
The cylindrical cavity both ends are connected to, the shaft is installed on by bearing in the front pressuring plate and rear fender；Advantage
It is：Three parts are divided housing 135 into, reduce monoblock type difficulty of processing, and convenient for assembly, it is convenient to replace, easy to repair.
Preferably, the cylindrical cavity is equipped with the first heat emission hole；Advantage is：Enhance motor and outside air
Circulation, convenient for distributing for motor heat.
Preferably, the front pressuring plate is equipped with the second heat emission hole；The structure of the rear fender is identical as the front pressuring plate structure；
Advantage is：The front pressuring plate and rear fender being arranged symmetrically use identical design, it is possible to reduce parts machining
Type, reduce parts make cost；The circulation for further enhancing motor and outside air, is convenient for motor heat
Distribute.
Preferably, the permanent magnet synchronous motor is covered by protective cover, the protective cover being coated in the stator base
It fixes on the base；Air inlet and gas outlet are offered on the protective cover, inner wall is equipped with thermal insulation layer；The air inlet with
External quenching system connection；Advantage is：It prevents external dust or impurity from entering inside motor, is influencing motor just
Often work；The thermal insulation layer effectively completely cuts off the temperature of motor and place environment storehouse, prevents from generating in motor operation course
The temperature that temperature tests environment storehouse has an impact；The air inlet and gas outlet being equipped with introduce external quenching system, accelerate
The heat dissipation of motor hastens, and motor may make in best operating temperature, to enhance the reliability of equipment for a long time, described
The heat taken away is discharged directly to outside environment storehouse, also avoids the influence to environment storehouse temperature.
Preferably, the shaft is in through-hole structure；Enhance the circulation of motor rotor component and outside air, is convenient for motor
Rotor assembly heat distributes.
Preferably, the rotor assembly includes that rotor pedestal and several axial lines around the shaft are distributed on the rotor pedestal
Magnetic base steel plate, the rotor pedestal is fixedly mounted in the 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 magnetic base steel plate 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, the encoder includes the sensing element of code-disc and the induction code-disc, and the code-disc is mounted on shaft
Or on rotor assembly, the sensing element is mounted on the shell or stator module, corresponding with the code-disc；It is beneficial to effect
Fruit is：Rotating speed of the encoder to main shaft, the corner for efficiently utilizing permanent magnet synchronous motor itself are read out, and improve member
The utilization rate of device saves cost.
Compared with prior art, it will be had an advantageous effect in that when the present invention is particularly at work in environment storehouse:1, it protects
The design of shield and its thermal insulation layer other than the extreme environment in environmental protection storehouse is to the influence of motor itself, be additionally operable to by motor with
Environment storehouse carries out thermal isolation, and the heat generated when preventing motor from working has an impact environment storehouse；2, motor case heat emission hole
Design, enhances the trafficability performance between motor and air, improves the heat dissipation performance of motor；3, motor is set using modular
Meter, reduces the difficulty of processing of motor stator, has saved generation cost, especially when producing large radius stator module；4, forever
The application of magnetic-synchro motor improves the accuracy of control.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the chassis dynamometer of permanent magnet synchronous motor driving described in embodiment one；
Fig. 2 is a kind of structural representation of the chassis dynamometer part of permanent magnet synchronous motor driving described in embodiment one
Figure；
Fig. 3 is the structural schematic diagram of the cylindrical cavity；
Fig. 4 is the structural schematic diagram of the front pressuring plate；
Fig. 5 is the structural schematic diagram of the middle rotor assembly and stator module described in embodiment one；
Fig. 6 is the structural schematic diagram of the protective cover；
Fig. 7 is a kind of chassis dynamometer structural schematic diagram of permanent magnet synchronous motor driving described in embodiment two；
Fig. 8 is a kind of structural representation of the chassis dynamometer part of permanent magnet synchronous motor driving described in embodiment two
Figure；
Fig. 9 is the structural schematic diagram of the stator module described in embodiment two；
Figure 10 is a kind of structural schematic diagram of the chassis dynamometer of permanent magnet synchronous motor driving described in embodiment three；
Figure 11 is a kind of structural representation of the chassis dynamometer part of permanent magnet synchronous motor driving described in embodiment three
Figure；
In figure：1, pedestal；11, bottom plate；12, support column；13, shaft；14, rear fender；15, front pressuring plate；151, second dissipates
Hot hole；16, cylindrical cavity；161, the first heat emission hole；17, level-one gearbox；2, main shaft；3, bearing；4, encoder；41, code-disc；
42, sensing element；5, protective cover；51, air inlet；52, gas outlet；53, thermal insulation layer；6, stator module；61, stator base；62、
Stator unit；62-1, stator modules；7, key；8, rotor assembly；81, rotor pedestal；82, magnet steel substrate；9, torque dynamometer；
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 figures 1 to 6, the chassis dynamometer of a kind of permanent magnet synchronous motor driving, including pedestal 1, main shaft 2, encoder 4,
9 Ji Zhuan Grains 10 of torque dynamometer, the pedestal 1 include that bottom plate 11 and the support column 12 being arranged in 11 both sides of the bottom plate form；
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, described
Main shaft 2 provides electromagnetic resistance come analog mechanical inertia by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes shaft 13, shell
Body, stator module 6 and rotor assembly 8；The stator module 6 is fixedly mounted on the housing, is provided for the rotor assembly 8
The resistance magnetic field of rotation；The rotor assembly 8 with magnetic property is fixedly installed in the shaft 13, with the stator pack
Part 6 is corresponding；The torque dynamometer 9 is placed between the main shaft 2 and shaft 13, for measuring the driving torque between axis；
The encoder 4 is used to measure the rotating speed and corner of the shaft 13.
Preferably, the shell includes cylindrical cavity 16, front pressuring plate 15 and rear fender 14, the front pressuring plate 15 and afterwards pressure
Plate 14 is detachably connected to 16 both ends of the cylindrical cavity by fastening bolt, the shaft 13 by bearing be installed on it is described before
In pressing plate and rear fender；The cylindrical cavity 16 is equipped with the first heat emission hole 161, and first heat emission hole 161 is waist round hole,
Cloth is in 16 peripheral wall of the cylindrical cavity；The front pressuring plate 15 is equipped with the second heat emission hole 151, and second heat emission hole 151 is in sector
Structure；The structure of the rear fender 14 is identical as 15 structure of the front pressuring plate；Further, the permanent magnet synchronous motor is by protecting
Shield 5 covers, and the protective cover 5 being coated in the stator base 61 is fixed on the support column 12；The protective cover 5
On offer air inlet 51 and gas outlet 52, inner wall is equipped with thermal insulation layer 53；The air inlet 51 is connect with external quenching system；
The rotor assembly 8 includes rotor pedestal 81 and several magnet steel bases being distributed on around 2 axial line of main shaft on the rotor pedestal 81
Plate 82, the rotor pedestal 81 are fixedly mounted by key 7 in the shaft 13；The stator module 6 includes stator base 61
And stator unit 62, the stator base 61 are fixedly mounted on the cylindrical cavity 16, the stator unit 62 is fixedly mounted
In the stator base 61；Further, the stator unit 62 is by several stator modules 62-1 in fan-shaped ring structure
Composition；The single stator modules 62-1 includes stator core and the stator winding that is wrapped in the stator core；It is described
Stator modules 62-1 is in the inner circumferential wall that the axial line of the stator base 61 is distributed on the stator base 61；The coding
Device 4 includes code-disc 41 and incudes the sensing element 42 of the code-disc 41, and the code-disc 41 is mounted in shaft 13, the induction member
Part 42 is mounted on the cylindrical cavity 16, corresponding with the code-disc 41.
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 shaft 13, is connected by the torque dynamometer 9 between the shaft 13 and main shaft 2,
In axis rotary course, the torque dynamometer 9 is used to measure the driving torque numerical value on main shaft 2, and numerical value is passed to control
Device, controller calculate the realtime power of vehicle further according to the rotating speed of shaft 13 indirectly.
Embodiment two
As Figure 7-9, the chassis dynamometer of a kind of permanent magnet synchronous motor driving, including pedestal 1, main shaft 2, encoder 4,
9 Ji Zhuan Grains 10 of torque dynamometer, the pedestal 1 include that bottom plate 11 and the support column 12 being arranged in 11 both sides of the bottom plate form；
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, described
Main shaft 2 provides electromagnetic resistance come analog mechanical inertia by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes shaft 13, shell
Body, stator module 6 and rotor assembly 8；The stator module 6 is fixedly mounted on the housing, is provided for the rotor assembly 8
The resistance magnetic field of rotation；The rotor assembly 8 with magnetic property is fixedly installed in the shaft 13, with the stator pack
Part 6 is corresponding；The torque dynamometer 9 is placed between the main shaft 2 and shaft 13, for measuring the driving torque between axis；
The encoder 4 is used to measure the rotating speed and corner of the shaft 13.
Preferably, the torque dynamometer 9 is in the form of a column structure, is fixedly mounted on support column 12, and it is same that end face is equipped with permanent magnetism
The installation bolt hole of motor is walked, permanent magnet synchronous motor is mounted by means of bolts on the torque dynamometer 9；The rotor set
Part 8 includes that rotor pedestal 81 and several 13 axial lines around the shaft are distributed on the magnet steel substrate 82 on the rotor pedestal 81, is in disk
The rotor pedestal 81 of shape structure is bolted on installation 13 end face of shaft；The stator module 6 includes fixed
Sub-base 61 and stator unit 62, the stator base 61 are fixedly mounted on the torque dynamometer 9, the stator unit 62
It is fixedly mounted in the stator base 61；Further, the stator unit 62 is by several stators in fan-shaped disk-like structure
Module 62-1 compositions；The single stator modules 62-1 include stator core and the stator being wrapped in the stator core around
Group；For the stator base 61 in open annular dish structure, the stator modules 62-1 is equal around the axial line of the stator base 61
Cloth is on the end face of the stator base 61；The permanent magnet synchronous motor is covered by protective cover 5, is coated at the stator base 61
On the protective cover 5 be fixed on the support column 12；Air inlet 51 and gas outlet 52 are offered on the protective cover 5, it is interior
Wall is equipped with thermal insulation layer 53；The air inlet 51 is connect with external quenching system；The encoder 4 includes code-disc 41 and induction institute
The sensing element 42 of code-disc 41 is stated, the code-disc 41 is mounted on rotor pedestal 81, and it is described fixed that the sensing element 42 is mounted on
It is corresponding with the code-disc 41 in sub-base 61.
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 shaft 13, is connected by the torque dynamometer 9 between the shaft 13 and main shaft 2,
In axis rotary course, the torque dynamometer 9 measures the driving torque numerical value on main shaft 2, and numerical value is passed to controller, controls
Device processed calculates the realtime power of vehicle further according to the rotating speed of shaft 13 indirectly.
Embodiment three
As shown in figs. 10-11, a kind of chassis dynamometer of permanent magnet synchronous motor driving, includes pedestal 1, main shaft 2, level-one
Gearbox 17, encoder 4,9 Ji Zhuan Grains 10 of torque dynamometer, the pedestal 1 include bottom plate 11 and setting in 11 liang of the bottom plate
The support column 12 of side forms；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, the main shaft 2 provides electromagnetic resistance come analog mechanical inertia, the permanent-magnet synchronous by permanent magnet synchronous motor
Motor includes shaft 13, shell, stator module 6 and rotor assembly 8；The stator module 6 is fixedly mounted on the housing,
The resistance magnetic field of rotation is provided for the rotor assembly 8；The rotor assembly 8 with magnetic property is fixedly installed in described turn
It is corresponding with the stator module 6 on axis 13；The torque dynamometer 9 is placed between the main shaft 2 and shaft 13, for surveying
Measure the driving torque between axis；The encoder 4 is used to measure the rotating speed and corner of the shaft 13.
Preferably, the shell includes cylindrical cavity 16, front pressuring plate 15 and rear fender 14, the front pressuring plate 15 and afterwards pressure
Plate 14 is detachably connected to 16 both ends of the cylindrical cavity by fastening bolt, the shaft 13 by bearing be installed on it is described before
In pressing plate and rear fender；The cylindrical cavity 16 is equipped with the first heat emission hole 161, and first heat emission hole 161 is waist round hole,
Cloth is in 16 peripheral wall of the cylindrical cavity；The front pressuring plate 15 is equipped with the second heat emission hole 151, and second heat emission hole 151 is in sector
Structure；The structure of the rear fender 14 is identical as 15 structure of the front pressuring plate；Further, the permanent magnet synchronous motor is by protecting
Shield 5 covers, and the protective cover 5 being coated in the stator base 61 is fixed on the support column 12；The protective cover 5
On offer air inlet 51 and gas outlet 52, inner wall is equipped with thermal insulation layer 53；The air inlet 51 is connect with external quenching system；
The rotor assembly 8 includes rotor pedestal 81 and several magnet steel bases being distributed on around 2 axial line of main shaft on the rotor pedestal 81
Plate 82, the rotor pedestal 81 are fixedly mounted by key 7 in the shaft 13；The stator module 6 includes stator base 61
And stator unit 62, the stator base 61 are fixedly mounted on the cylindrical cavity 16, the stator unit 62 is fixedly mounted
In the stator base 61；Further, the stator unit 62 is by several stator modules 62-1 in fan-shaped ring structure
Composition；The single stator modules 62-1 includes stator core and the stator winding that is wrapped in the stator core；It is described
Stator modules 62-1 is in the inner circumferential wall that the axial line of the stator base 61 is distributed on the stator base 61；The coding
Device 4 includes code-disc 41 and incudes the sensing element 42 of the code-disc 41, and the code-disc 41 is mounted in shaft 13, the induction member
Part 42 is mounted on the cylindrical cavity 16, corresponding with the code-disc 41.
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 the shaft 13, and output end and 17 input terminal of level-one gearbox of the shaft 13 connect
It connects, the level-one gearbox 17 is used to adjust the operating mode of permanent magnet synchronous motor and carries out buffer protection to it；The level-one speed change
It is connected by the torque dynamometer 9 between the output end and main shaft 2 of case 17, in axis rotary course, the torque dynamometer 9
The driving torque numerical value on main shaft 2 is measured, numerical value is passed into controller, controller calculates indirectly further according to the rotating speed of shaft 13
Go out the realtime power of vehicle.
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 chassis dynamometer of permanent magnet synchronous motor driving includes pedestal, main shaft, encoder, torque dynamometer and is turned
Grains, the main shaft are fixedly mounted on the base by bearing；Suo Shu Zhuan Grains are fixed on the main shaft, which is characterized in that
The main shaft provides resistance by permanent magnet synchronous motor, and the permanent magnet synchronous motor includes shaft, shell, stator module and rotor
Component；The stator module is fixedly mounted on the housing, and the resistance magnetic field of rotation is provided for the rotor assembly；With forever
The rotor assembly of magnetic characteristic is fixedly installed in the shaft, corresponding with the stator module；The torque dynamometer
It is placed between the main shaft and shaft, for measuring the driving torque between axis；The encoder is for measuring the shaft
Rotating speed and corner.
2. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 1, which is characterized in that the shell
Include cylindrical cavity, front pressuring plate and rear fender, the front pressuring plate and rear fender are detachably connected to the cylindrical cavity both ends,
The shaft is installed on by bearing in the front pressuring plate and rear fender.
3. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 2, which is characterized in that the cylinder
Cavity is equipped with the first heat emission hole.
4. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 2, which is characterized in that pressure before described
Plate is equipped with the second heat emission hole；The structure of the rear fender is identical as the front pressuring plate structure.
5. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 3, which is characterized in that the permanent magnetism
Synchronous motor is covered by protective cover, and the protective cover being coated in the stator base is fixed on the base；The guarantor
Air inlet and gas outlet are offered on shield, inner wall is equipped with thermal insulation layer；The air inlet is connect with external quenching system.
6. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 1 or 2, which is characterized in that described
Shaft is in through-hole structure.
7. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 1, which is characterized in that the rotor
Component includes rotor pedestal and several axial lines around the shaft are distributed on the magnetic base steel plate on the rotor pedestal, the rotor pedestal
It is fixedly mounted in the shaft.
8. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 1, which is characterized in that the stator
Component includes stator base and stator unit, and the stator base is fixedly mounted on the housing, and the stator unit is solid
Dingan County is in the stator base.
9. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 8, which is characterized in that the stator
Unit is made of several stator modules in sector structure；The single stator modules include stator core and are wrapped in described
Stator winding in stator core.
10. a kind of chassis dynamometer of permanent magnet synchronous motor driving according to claim 1, which is characterized in that the volume
Code device includes the sensing element of code-disc and the induction code-disc, and the code-disc is mounted on shaft or rotor assembly, the induction
Element is mounted on the shell or stator module, corresponding with the code-disc.
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| CN108663148B (en) | 2024-01-12 |
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