CN103105227A - Electric motor noise testing system for electric automobile drive - Google Patents
Electric motor noise testing system for electric automobile drive Download PDFInfo
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- CN103105227A CN103105227A CN2011103582833A CN201110358283A CN103105227A CN 103105227 A CN103105227 A CN 103105227A CN 2011103582833 A CN2011103582833 A CN 2011103582833A CN 201110358283 A CN201110358283 A CN 201110358283A CN 103105227 A CN103105227 A CN 103105227A
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- eddy current
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- current dynamometer
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Abstract
The invention relates to an electric motor noise testing system for electric automobile drive. The electric motor noise testing system for the electric automobile drive comprises a semi-anechoic room, an installation plate, an electric eddy current dynamometer, a dynamometer controller, a rotating-speed torque collecting instrument and a cooling water tank, wherein the semi-anechoic room is used for shielding noise, the installation plate is arranged in the semi-anechoic room, the electric eddy current dynamometer is arranged on the installation plate, a rotating shaft of the electric eddy current dynamometer is connected with a rotating shaft through a motor to be tested and provides load for the motor to be tested, actual working conditions are simulated, the dynamometer controller is installed on the installation plate, connected with the electric eddy current dynamometer and used for adjusting the torque of the electric eddy current dynamometer, the rotating-speed torque collecting instrument is arranged on the rotating-speed torque collecting instrument and used for collecting testing information, the cooling water tank is arranged outside the semi-anechoic room, cooling liquid is arranged in the cooling water tank, the cooling water tank is communicated with the electric eddy current dynamometer through a flexible tube, and the electric eddy current dynamometer is cooled by means of water cooling. Compared with the prior art, the electric motor noise testing system for the electric automobile drive can simulate the actual load working condition of an electrical motor and eliminate influence generated noise of other equipment in the testing system on the noise of the tested elector motor.
Description
Technical field
The present invention relates to a kind of Motor Measuring System, especially relate to a kind of energy simulated machine actual loading operating mode, and eliminate the electric automobile driving motor noise measuring system of miscellaneous equipment noise on tested noise of motor impact in test macro.
Background technology
According to national noise of motor testing standard, traditional noise of motor is measured and is all carried out under no-load condition; Yet for vehicle-mounted drive motor, its operating mode must be to be accompanied by various load, and the variation of load all has a great impact for machinery, the electromagnetic noise of motor.Therefore, want to reflect objectively the noise level of automobile drive motor, just must break through traditional method, add motor load to test, and in the noise of motor measuring process, stop the introducing of other noise source.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of electric automobile to drive for the defective that overcomes above-mentioned prior art existence to use the motor noise measuring system, this test macro energy simulated machine actual loading operating mode, and in the elimination test macro, the miscellaneous equipment noise affects tested noise of motor.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of electric automobile drives and uses the motor noise measuring system, comprises semi-anechoic room, is used for the shielding noise; Installing plate is located in semi-anechoic room; Electric eddy current dynamometer is located on installing plate, the rotating shaft of electric eddy current dynamometer be connected by the rotating shaft of measured motor, for being provided load by measured motor, the simulation actual condition; The Dynamometer Control device is located on installing plate, connects electric eddy current dynamometer, is used for regulating the electric eddy current dynamometer moment of torsion; The rotational speed and torque Acquisition Instrument is located on electric eddy current dynamometer, is used for collecting test information; Cooling water tank is located at the semi-anechoic room outside, is provided with liquid coolant in cooling water tank, is communicated with electric eddy current dynamometer by flexible pipe, adopts the mode cooling electric eddy current dynamometer of water-cooled.
Described rotational speed and torque Acquisition Instrument comprises scrambler, power sensor and the arm of force, and described scrambler is connected with the rotating shaft of electric eddy current dynamometer, and the described arm of force is horizontally disposed with, and an end of the arm of force connects the rotating shaft of electric eddy current dynamometer, and the other end connects the power sensor.Wherein, rotary speed information can be obtained by scrambler, and scrambler is according to the rotating speed of electric eddy current dynamometer rotating shaft, and the output pulse according to the umber of pulse of exporting in certain hour, just can obtain the rotating speed of rotating shaft.And moment information obtains by the arm of force and power sensor, and its level of torque is the reading that arm of force length multiply by the power sensor.
Described rotational speed and torque Acquisition Instrument also comprises demarcates bar and counterweight, and described demarcation bar is horizontally disposed with, and an end of demarcating bar connects the rotating shaft of electric eddy current dynamometer, and the other end is used for the power sensor of electric eddy current dynamometer is demarcated at test forward mounting counterweight.
Described scrambler is provided with the scrambler protective cover outward, this scrambler protective cover outside surface posts acoustic absorbant, the rotating shaft of electric eddy current dynamometer be connected by shaft coupling by the rotating shaft of measured motor, described shaft coupling is provided with coupler protective casing outward, this coupler protective casing outside surface posts acoustic absorbant.By protective cover and acoustic absorbant are set, can further reduce other noise source to the interference of measurement result, make measured value more accurate.
Described installing plate is provided with support, described electric eddy current dynamometer and being fixed on installing plate by support by measured motor.
Compared with prior art, the present invention has the following advantages:
1, noise is little, when test, only have bearing and the scrambler of shaft coupling and electric eddy current dynamometer to send comparatively slight noise, bearing is positioned at electric eddy current dynamometer inside, shell seal is arranged, shaft coupling and scrambler are equipped with protective cover and acoustic absorbant outward, the noise that produces is very little, what its complementary energy became interference noise source is exactly the interior water pump of cooling water tank, and the working environment of water pump is the outside at the noise elimination casing, only be connected with electric eddy current dynamometer by water inlet pipe and water outlet pipe, its noise on test almost without affecting, reduced to a great extent the introducing of interference noise.
2, can be by electric eddy current dynamometer to being loaded adjustable load by measured motor in test process, thus simulate the actual condition under various environment, test result is more tallied with the actual situation.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic cross-section of the torque measurement part of rotational speed and torque Acquisition Instrument of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, 2, a kind of electric automobile drives uses the motor noise measuring system, is connected the outer coupler protective casing 13 that is provided with of shaft coupling 12 with the rotating shaft of electric eddy current dynamometer 2 by shaft coupling 12 by the rotating shaft of measured motor 14.Be connected with its corresponding electric machine controller 15, Dynamometer Control device 17 respectively with electric eddy current dynamometer 2 by measured motor 14.Be arranged on installing plate 9 by support 11 by measured motor 14 and electric eddy current dynamometer 2.Electric machine controller 15, Dynamometer Control device 17 are arranged on installing plate 9 by controller support 16, are used for regulating controlling by the rotating speed of measured motor 14 and electric eddy current dynamometer 2, simulate various actual conditions.
The rotational speed and torque Acquisition Instrument has comprised the power sensor 10 that is used for measuring the scrambler 7 of rotating speed and is used for the measurement torque, and scrambler 7 is located in the rotating shaft of electric eddy current dynamometer 2, its outer scrambler protective cover 4 that is provided with.And power sensor 10 connects the rotating shaft of electric eddy current dynamometers 2 by a horizontally disposed arm of force 18, when rotating shaft is rotated, can obtain torque according to reading and the arm of force 18 length of power sensor 10.In addition, the rotating shaft of electric eddy current dynamometer 2 also is connected with a horizontally disposed demarcation bar 19, before test, hang up counterweight 20 in the end of demarcating bar 19, by theoretical torque and the actual measurement torque that the effect of contrast counterweight produces, can demarcate the power sensor, be used for the correction of experimental result.
Above-describedly all be arranged in a semi-anechoic room 1 by measured motor 14, electric eddy current dynamometer 2, installing plate 9 etc.Semi-anechoic room 1 outside is provided with a cooling water tank 6, is communicated with electric eddy current dynamometer 2 by flexible pipe 5, adopts the mode cooling electric eddy current dynamometer 2 of water-cooled.Be located at the outside of semi-anechoic room 1 due to cooling water tank 6, the noise that its water pump produces can not have influence in semi-anechoic room 1, and scrambler protective cover 4 and coupler protective casing 13 outside surfaces all post acoustic absorbant 3, have further reduced interference noise, make test result more accurate.
When carrying out the noise of motor test, motor arranged around acoustics Mike, then regulate respectively by measured motor 14 and electric eddy current dynamometer 2 by electric machine controller 15 and Dynamometer Control device 17 and come the simulated machine actual condition, record the noise figure of measuring under each operating mode.And corresponding rotary speed information can be obtained by scrambler 7, scrambler 7 is according to the rotating speed of electric eddy current dynamometer 2 rotating shafts, the output pulse, according to the umber of pulse of exporting in certain hour, just can obtain the rotating speed of rotating shaft, moment information obtains by the arm of force 18 and power sensor 10, and its level of torque is the reading that the arm of force 18 length multiply by power sensor 10.
Claims (6)
1. an electric automobile drives and uses the motor noise measuring system, it is characterized in that, comprises
Semi-anechoic room is used for the shielding noise;
Installing plate is located in semi-anechoic room;
Electric eddy current dynamometer is located on installing plate, the rotating shaft of electric eddy current dynamometer be connected by the rotating shaft of measured motor, for being provided load by measured motor, the simulation actual condition;
The Dynamometer Control device is located on installing plate, connects electric eddy current dynamometer, is used for regulating the electric eddy current dynamometer moment of torsion;
The rotational speed and torque Acquisition Instrument is located on electric eddy current dynamometer, is used for collecting test information;
Cooling water tank is located at the semi-anechoic room outside, is provided with liquid coolant in cooling water tank, is communicated with electric eddy current dynamometer by flexible pipe.
2. a kind of electric automobile according to claim 1 drives and uses the motor noise measuring system, it is characterized in that, described rotational speed and torque Acquisition Instrument comprises scrambler, power sensor and the arm of force, described scrambler is connected with the rotating shaft of electric eddy current dynamometer, the described arm of force is horizontally disposed with, one end of the arm of force connects the rotating shaft of electric eddy current dynamometer, and the other end connects the power sensor.
3. a kind of electric automobile according to claim 2 drives and uses the motor noise measuring system, it is characterized in that, described rotational speed and torque Acquisition Instrument also comprises demarcates bar and counterweight, described demarcation bar is horizontally disposed with, an end of demarcating bar connects the rotating shaft of electric eddy current dynamometer, the other end is used for the power sensor of electric eddy current dynamometer is demarcated at test forward mounting counterweight.
4. a kind of electric automobile according to claim 2 drives and uses the motor noise measuring system, it is characterized in that, described scrambler is provided with the scrambler protective cover outward, and this scrambler protective cover outside surface posts acoustic absorbant.
5. a kind of electric automobile according to claim 1 drives and uses the motor noise measuring system, it is characterized in that, the rotating shaft of electric eddy current dynamometer be connected by shaft coupling by the rotating shaft of measured motor, described shaft coupling is provided with coupler protective casing outward, and this coupler protective casing outside surface posts acoustic absorbant.
6. a kind of electric automobile according to claim 1 drives and uses the motor noise measuring system, it is characterized in that, described installing plate is provided with support, described electric eddy current dynamometer and being fixed on installing plate by support by measured motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103582833A CN103105227A (en) | 2011-11-11 | 2011-11-11 | Electric motor noise testing system for electric automobile drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103582833A CN103105227A (en) | 2011-11-11 | 2011-11-11 | Electric motor noise testing system for electric automobile drive |
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| Publication Number | Publication Date |
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| CN103105227A true CN103105227A (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103582833A Pending CN103105227A (en) | 2011-11-11 | 2011-11-11 | Electric motor noise testing system for electric automobile drive |
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| CN (1) | CN103105227A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606204A (en) * | 2015-12-18 | 2016-05-25 | 北汽福田汽车股份有限公司 | Testing system for anechoic room, and anechoic room |
| CN105807222A (en) * | 2016-04-29 | 2016-07-27 | 上海电器科学研究所（集团）有限公司 | Intelligent tester for motor stalling test |
| CN113340411A (en) * | 2021-07-06 | 2021-09-03 | 中国船舶工业集团公司第七0八研究所 | Propeller power meter load device for measuring background noise of circulating water tank |
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| CN101582676A (en) * | 2009-04-27 | 2009-11-18 | 武汉理工大学 | Automatic gear shifting control system of motor in electric automobile |
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2011
- 2011-11-11 CN CN2011103582833A patent/CN103105227A/en active Pending
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| CN2412213Y (en) * | 2000-02-23 | 2000-12-27 | 摩托车检测技术研究所 | Chassis ergograph |
| CN1601247A (en) * | 2004-10-26 | 2005-03-30 | 武汉理工大学 | Test-bed for optimizing pulley train of engine |
| CN200953042Y (en) * | 2006-10-09 | 2007-09-26 | 上海燃料电池汽车动力系统有限公司 | Driving electric machine for fuel battery vehicle and control system test platform |
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| 申秀敏等: "燃料电池车声振测试及噪声源识别", 《声学技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606204A (en) * | 2015-12-18 | 2016-05-25 | 北汽福田汽车股份有限公司 | Testing system for anechoic room, and anechoic room |
| CN105606204B (en) * | 2015-12-18 | 2019-04-23 | 北汽福田汽车股份有限公司 | Anechoic chamber's test macro and anechoic chamber |
| CN105807222A (en) * | 2016-04-29 | 2016-07-27 | 上海电器科学研究所（集团）有限公司 | Intelligent tester for motor stalling test |
| CN113340411A (en) * | 2021-07-06 | 2021-09-03 | 中国船舶工业集团公司第七0八研究所 | Propeller power meter load device for measuring background noise of circulating water tank |
| CN113340411B (en) * | 2021-07-06 | 2022-10-14 | 中国船舶工业集团公司第七0八研究所 | Propeller power meter load device for measuring background noise of circulating water tank |
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Application publication date: 20130515 |