CN109357892A - A kind of pure electric automobile power assembly noise measuring system and test method - Google Patents
A kind of pure electric automobile power assembly noise measuring system and test method Download PDFInfo
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- CN109357892A CN109357892A CN201811282343.6A CN201811282343A CN109357892A CN 109357892 A CN109357892 A CN 109357892A CN 201811282343 A CN201811282343 A CN 201811282343A CN 109357892 A CN109357892 A CN 109357892A
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- power assembly
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- measuring system
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- 238000010998 test method Methods 0.000 title claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 64
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 2
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
Abstract
The invention discloses a kind of pure electric automobile power assembly noise measuring system and test methods, test macro includes anechoic room or semianechoic room, tested power assembly is placed in anechoic room or semianechoic room, test macro further includes that loaded load bringing device is applied to power assembly, load the first controller that bringing device includes the mobile rotating hub being movably arranged in anechoic room or semianechoic room and is located at outside anechoic room or semianechoic room, first controller is electrically connected with mobile rotating hub, power assembly has first rotating shaft, mobile rotating hub has the second shaft, first rotating shaft is connect with the second shaft by shaft coupling, test macro further includes the noise-measuring system for being located at the noise signal that power assembly is tested in anechoic room or semianechoic room.It can avoid interference of other system noises to power assembly noise of pure electric automobile when the test macro tests power assembly, noise jamming is small when test, and loading condition when analog automobilism, test result are more true and reliable.
Description
Technical field
The present invention relates to vibration and noise test technical fields, and in particular to a kind of pure electric automobile power assembly noise testing
System and test method.
Background technique
According to national noise of motor testing standard, traditional noise of motor measurement is all only under the operating condition of empty load of motor
It carries out；However for electric car, driving motor is to work under different loads, and different loads is for motor
Mechanical noise, electromagnetic noise have very big influence.Moreover, driving motor and retarder constitute most electric cars
Power assembly, driving motor noise have an impact to retarder noise, conversely, retarder noise also acts on driving motor noise,
But in actual tests, the two is often separately studied, and it is excessively unilateral to will lead to result in this way.However, being carried out on pure electric vehicle
The noise jamming of other structures part is often adulterated in the noise testing of power assembly.Therefore, it is desirable to it is objective, accurately reaction electricity
The noise level of electrical automobile power assembly must just break through conventional method, carry out to independent power assembly of electric automobile negative
The test of load, and the influence of ambient noise is reduced as far as possible.
Summary of the invention
The purpose of the present invention is being directed to the problems of the prior art, a kind of improved pure electric automobile power assembly is provided and is made an uproar
Sounding test system.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of pure electric automobile power assembly noise measuring system, including anechoic room or semianechoic room are tested power assembly and place
In the anechoic room or semianechoic room, the test macro further includes applying for applying loaded load to the power assembly
Feeder apparatus, the load bringing device include the mobile rotating hub being movably disposed in the anechoic room or semianechoic room and set
The first controller outside the anechoic room or semianechoic room is set, first controller is electrically connected with the mobile rotating hub, institute
Power assembly is stated with first rotating shaft, the mobile rotating hub has the second shaft, and the first rotating shaft and second shaft are logical
Shaft coupling connection is crossed, the test macro further includes that setting is total for testing the power in the anechoic room or semianechoic room
At noise signal noise-measuring system.
Preferably, the test macro further includes second controller, second controller setting in the anechoic room or
Outside semianechoic room, the power assembly is electrically connected with the second controller.
Preferably, it is fixedly installed iron floor in the anechoic room or semianechoic room, the power assembly passes through rigidity
Bracket is fixed on the iron floor.
Preferably, the mobile rotating hub is separately positioned on the opposite sides of the power assembly, and the two of the first rotating shaft
End is connected by the shaft coupling with second shaft of corresponding side.
Preferably, the test macro further include for carrying out cooling cooling system to the power assembly, it is described cold
But system is arranged outside the anechoic room or semianechoic room, and the power assembly is connect with the cooling system by pipeline.
Further, the cooling system uses water-cooling system.
Preferably, the shaft coupling includes the first flange and second flange being fixedly connected, the first flange with it is described
First rotating shaft connection, the second flange are connect with second shaft.
Further, the test macro further includes the shield being located at outside the first flange and the second flange.
Preferably, the noise-measuring system is microphone, and same test position may be provided with one or more wheats
Gram wind.
The present invention also provides a kind of pure electric automobile power assembly noise testing method, use is as described in any one of the above embodiments
Test macro is tested, the test method are as follows:
(1) start power assembly, the operating parameter of the power assembly is adjusted according to setting operating condition；
(2) start the mobile rotating hub, by first controller according to the operation of mobile rotating hub described in setting operating conditions
State；
(3) believed in the power assembly operational process by the noise that the noise-measuring system tests the power assembly
Number；
(4) change the step described in the operating parameter and step (2) of power assembly described in (1) operating status of mobile rotating hub with
After the different operating conditions for simulating the power assembly, the power assembly is tested again by the noise-measuring system and is run
Noise signal in the process.
Due to the application of the above technical scheme, compared with the prior art, the invention has the following advantages: pure electricity of the invention
Electrical automobile power assembly noise measuring system structure is simple, can avoid the other of pure electric automobile when testing power assembly
Interference of the system noise to power assembly noise, noise jamming is small in test process, and negative when analog electric car is run
Situation is carried, test result is more true and reliable.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of pure electric automobile power assembly noise measuring system of the invention.
Wherein: 1, anechoic room or semianechoic room；2, mobile rotating hub；21, the second shaft；3, the first controller；4, shaft coupling；
5, signal line；6, second controller；7, shield；8, iron floor；9, bracket；10, cooling system；11, pipeline；100, power
Assembly；101, motor；102, retarder；103, first rotating shaft.
Specific embodiment
The technical solution of the present invention will be further described below with reference to the accompanying drawings.
As shown in Figure 1, pure electric automobile power assembly noise measuring system of the invention includes anechoic room or semianechoic room 1
With load bringing device.
The influence of anechoic room or the maskable other systems noise of semianechoic room 1, provides lower ambient noise, is tested power
Assembly 100 is placed in anechoic room or semianechoic room 1.Tested power assembly 100 is made of motor 101 and retarder 102, is moved
Power assembly 100 also has first rotating shaft 103.
Iron floor 8 is fixedly installed in anechoic room or semianechoic room 1, power assembly 100 is fixed by the bracket 9 of rigidity
It is arranged on iron floor 8.
Loading bringing device includes mobile rotating hub 2 and the first controller 3.Mobile rotating hub 2 is movably disposed at anechoic room
Or in semianechoic room 1, in the process of running, the noise that mobile rotating hub 2 issues is smaller, therefore influences on test result smaller.The
One controller 3 is arranged outside anechoic room or semianechoic room 1, in this way, can avoid what the first controller 3 itself in test process generated
Noise jamming and manual operation bring interference noise, to improve the accuracy of test result.Mobile rotating hub 2 has second turn
Axis 21, first rotating shaft 103 are connect with the second shaft 21 by shaft coupling 4.Mobile rotating hub 2 and the first controller 3 pass through signal wire
Road 5 is electrically connected, and the first controller 3 can be set different operating conditions, can also acquire the signals such as revolving speed, the torque of mobile rotating hub 2.This
Sample can be controlled mobile rotating hub 2 by the first controller 3 and be in different operating statuses, to simulate the load shape under different operating conditions
State simultaneously applies load to power assembly 100, to simulate the actual operating mode of power assembly 100.
The test macro further includes second controller 6, and second controller 6 is also disposed at outside anechoic room or semianechoic room 1, this
Sample can avoid second controller 6 itself generates in test process noise jamming and manual operation bring interference noise, with
Improve the accuracy of test result.Second controller 6 is electrically connected with the motor 101 of power assembly 100 by signal line 5, this
Sample can adjust the parameter in 101 operational process of motor, such as motor speed, switching frequency by second controller 6, so that
Power assembly 100 operates under the operating condition of setting.
In the present embodiment, the both ends of first rotating shaft 103 are free end, therefore mobile rotating hub 2 is separately positioned on power
Two free ends of the opposite sides of assembly 100, first rotating shaft 103 pass through mobile rotating hub 2 of the shaft coupling 4 with corresponding side respectively
The connection of the second shaft 21, two mobile rotating hubs 2 pass through signal line 5 with the first controller 3 simultaneously and connect.
Shaft coupling 4 includes the first flange and second flange being fixedly connected, and first flange is connect with first rotating shaft 103, the
Two flanges are connect with the second shaft 21.
The test macro further includes shield 7, and shield 7 is located at the outside of first flange and second flange, is protected by setting
Cover 7, can prevent first flange and second flange in 100 operational process of power assembly from throwing away.
The test macro further includes cooling system 10, and cooling system 10 is used to cool down power assembly 100, so that
Power assembly 100 is stable within the temperature range of setting in the process of running.Cooling system 10 is also disposed at anechoic room or partly disappears
Outside sound chamber 1, in this way, can avoid the interference for the noise that cooling system 10 itself generates in test process, to improve test result
Accuracy.Cooling system 10 is connect with power assembly 100 by pipeline 11.In the present embodiment, cooling system uses water-cooling system,
Pipeline 11 uses hose.
The test macro further includes noise-measuring system (not shown), and noise-measuring system is used in power assembly
The noise signal of power assembly 100 is tested in 100 operational process, noise-measuring system is arranged in anechoic room or semianechoic room 1
And be located at around power assembly 100, specific installation site can be set according to actual needs.In the present embodiment, noise is surveyed
Trial assembly is set using microphone, and during the test, same test position may be provided with one or more microphones.
Power assembly 100 has a variety of operating conditions, after which installs, passes through the test system and test power
The test method of the noise of assembly is specific as follows:
(1) start power assembly 100, and adjust the operation of power assembly 100 according to a certain setting operating condition by second controller 6
Parameter；
(2) start mobile rotating hub 2, control the fortune of mobile rotating hub 2 by the first controller 3 according to the operating condition set in step (1)
Row state applies to power assembly 100 and loads；
(3) noise signal of power assembly 100 is tested by noise-measuring system in 100 operational process of power assembly；
(4) operating parameter that power assembly 100 in (1) is changed the step by second controller 6, is changed by the first controller 3
The operating status of mobile rotating hub 2 in step (2), to simulate the different operating conditions of power assembly 100, again by noise testing
Noise signal in 100 operational process of device to test power assembly, recycles according to this, until the test of completely whole operating conditions.
The test system structure is simple, compared with prior art, the invention has the following advantages that
(1) this test macro only tests the power assembly of pure electric automobile, can avoid other systems of pure electric automobile
Interference of the noise to power assembly noise, so that test result more has specific aim；
(2) coupled noise of the two can be furtherd investigate using motor and retarder as common subject in the present invention；
(3) for this test macro using mobile rotating hub, running noises are lower, are greater than 10dB with the difference of test result；And by
The power assembly of test is in anechoic room or semianechoic room, has lower ambient noise, so that power assembly is tested
Noise jamming is smaller in the process；
(4) in test process, load when electric car is run can be set by the first controller, simulate real working condition, make
Test result is more true and reliable.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand the contents of the present invention and be implemented, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of pure electric automobile power assembly noise measuring system, it is characterised in that: including anechoic room or semianechoic room, be tested
Power assembly is placed in the anechoic room or semianechoic room, and the test macro further includes for applying to the power assembly
The load bringing device of load, the load bringing device includes being movably disposed in the anechoic room or semianechoic room
Mobile rotating hub and the first controller being arranged in outside the anechoic room or semianechoic room, first controller and the movement turn
Hub electrical connection, the power assembly have first rotating shaft, the mobile rotating hub have the second shaft, the first rotating shaft with it is described
Second shaft is connected by shaft coupling, and the test macro further includes being arranged in the anechoic room or semianechoic room for testing
The noise-measuring system of the noise signal of the power assembly.
2. pure electric automobile power assembly noise measuring system according to claim 1, it is characterised in that: the test system
System further includes second controller, and the second controller is arranged outside the anechoic room or semianechoic room, the power assembly with
The second controller electrical connection.
3. pure electric automobile power assembly noise measuring system according to claim 1, it is characterised in that: the anechoic room
Or iron floor is fixedly installed in semianechoic room, the power assembly is fixed at the iron floor by the bracket of rigidity
On.
4. pure electric automobile power assembly noise measuring system according to claim 1, it is characterised in that: the movement turns
Hub is separately positioned on the opposite sides of the power assembly, and the both ends of the first rotating shaft pass through the shaft coupling and corresponding one
Second shaft of side connects.
5. pure electric automobile power assembly noise measuring system according to claim 1, it is characterised in that: the test system
System further includes for carrying out cooling cooling system to the power assembly, and the cooling system setting is in the anechoic room or half
Outside anechoic room, the power assembly is connect with the cooling system by pipeline.
6. pure electric automobile power assembly noise measuring system according to claim 5, it is characterised in that: the cooling system
System uses water-cooling system.
7. pure electric automobile power assembly noise measuring system according to claim 1, it is characterised in that: the shaft coupling
Including the first flange and second flange being fixedly connected, the first flange is connect with the first rotating shaft, the second flange
It is connect with second shaft.
8. pure electric automobile power assembly noise measuring system according to claim 7, it is characterised in that: the test system
System further includes the shield being located at outside the first flange and the second flange.
9. pure electric automobile power assembly noise measuring system according to claim 1, it is characterised in that: the noise is surveyed
Trial assembly is set to microphone, and same test position may be provided with one or more microphones.
10. a kind of pure electric automobile power assembly noise testing method, it is characterised in that: using any in such as claim 1 ~ 9
Test macro described in is tested, the test method are as follows:
(1) start power assembly, the operating parameter of the power assembly is adjusted according to setting operating condition；
(2) start the mobile rotating hub, by first controller according to the operation of mobile rotating hub described in setting operating conditions
State；
(3) believed in the power assembly operational process by the noise that the noise-measuring system tests the power assembly
Number；
(4) change the step described in the operating parameter and step (2) of power assembly described in (1) operating status of mobile rotating hub with
After the different operating conditions for simulating the power assembly, the power assembly is tested again by the noise-measuring system and is run
Noise signal in the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282343.6A CN109357892A (en) | 2018-10-31 | 2018-10-31 | A kind of pure electric automobile power assembly noise measuring system and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811282343.6A CN109357892A (en) | 2018-10-31 | 2018-10-31 | A kind of pure electric automobile power assembly noise measuring system and test method |
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| Publication Number | Publication Date |
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| CN109357892A true CN109357892A (en) | 2019-02-19 |
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| CN201811282343.6A Pending CN109357892A (en) | 2018-10-31 | 2018-10-31 | A kind of pure electric automobile power assembly noise measuring system and test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595528A (en) * | 2020-08-24 | 2021-04-02 | 中国汽车技术研究中心有限公司 | Method for identifying driving side exciting force of power assembly suspension under vehicle running condition |
| CN112697448A (en) * | 2020-08-24 | 2021-04-23 | 中国汽车技术研究中心有限公司 | Method for identifying driving side exciting force of power assembly suspension under vehicle idling working condition |
| CN113959734A (en) * | 2021-10-18 | 2022-01-21 | 中国第一汽车股份有限公司 | Method, device, medium and equipment for separating noise source in vehicle |
-
2018
- 2018-10-31 CN CN201811282343.6A patent/CN109357892A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595528A (en) * | 2020-08-24 | 2021-04-02 | 中国汽车技术研究中心有限公司 | Method for identifying driving side exciting force of power assembly suspension under vehicle running condition |
| CN112697448A (en) * | 2020-08-24 | 2021-04-23 | 中国汽车技术研究中心有限公司 | Method for identifying driving side exciting force of power assembly suspension under vehicle idling working condition |
| CN112595528B (en) * | 2020-08-24 | 2022-06-17 | 中国汽车技术研究中心有限公司 | Method for identifying driving side exciting force of power assembly suspension under vehicle running condition |
| CN112697448B (en) * | 2020-08-24 | 2022-06-17 | 中国汽车技术研究中心有限公司 | Method for identifying excitation force of suspension driving side of power assembly under idle condition of vehicle |
| CN113959734A (en) * | 2021-10-18 | 2022-01-21 | 中国第一汽车股份有限公司 | Method, device, medium and equipment for separating noise source in vehicle |
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