CN102982798A - Noise reduction system of generator - Google Patents
Noise reduction system of generator Download PDFInfo
- Publication number
- CN102982798A CN102982798A CN2012105243778A CN201210524377A CN102982798A CN 102982798 A CN102982798 A CN 102982798A CN 2012105243778 A CN2012105243778 A CN 2012105243778A CN 201210524377 A CN201210524377 A CN 201210524377A CN 102982798 A CN102982798 A CN 102982798A
- Authority
- CN
- China
- Prior art keywords
- generator
- noise reduction
- reduction system
- audio output
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000009183 running Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention discloses a noise reduction system of a generator, which comprises a generator, wherein an electric signal acquisition unit is arranged in a circuit of the generator and sequentially connected with a signal conversion device, an electronic control unit and an audio output device through a signal wire harness; when the generator runs, the electric signal acquisition unit acquires electric signals of the generator and transmits the electric signals of the generator to the signal conversion device; the signal conversion device converts the electric signals transmitted by the electric signal acquisition unit into rotating speed signals of the generator and transmits the rotating speed signals of the generator to the electronic control unit; the electronic control unit can output control signals to drive the audio output device to generate sound waves; and the sound waves are opposite in phase and identical in amplitude with the noise corresponding to the rotating speed of the generator in real time. Therefore, the sound waves generated by the generator can be counteracted with the opposite-phase sound waves generated by the audio output device, so as to reduce the noise generated by the running generator and improve the environment in the car for the driver and the passengers.
Description
Technical field
The present invention relates to automobile technical field, be specifically related to the noise reduction system of automobile current generator.
Background technology
The noise of generator comprises three kinds of electromagnetic noise, aerodynamic noise and mechanical noises, and generator low speed electromagnetic noise problem has been brought discomfort as the inherent shortcoming of conventional motor to driver and passenger.Find that after deliberation generator is in the lower situation of rotating speed, electromagnetic noise accounts for more than 80% of generator overall noise, and therefore, the reduction electromagnetic noise just can effectively reduce the overall noise in the generator low-speed running situation.
The method of noise reduction is divided into two kinds of active noise reduction and passive noise reductions.Active noise reduction is exactly to produce the reverse sound wave that equates with outside noise by noise reduction system, with the noise neutralization, thus the effect of realization noise reduction.Passive noise reduction is in the restriction of noise transmission path or noise insulation.At present, mostly the method that reduces the generator noise is to adopt passive noise reduction, namely by optimizing the structure of generator amature, stator, perhaps reduce output power and efficient reduces noise, but finally all can't contain electromagnetic noise fully, and input and output is not directly proportional.The phase place of generator electromagnetic noise is only relevant with its structure and rotating speed with frequency, in the situation that its structure has been finalized the design, the phase place of generator electromagnetic noise is only relevant with its rotating speed with frequency, therefore adopts the electromagnetic noise of the method reduction generator of active noise reduction to possess feasibility.
Summary of the invention
The noise reduction system that the purpose of this invention is to provide a kind of generator, the noise that this system produces when initiatively eliminating generator operation.
For achieving the above object, the technical solution used in the present invention is: a kind of noise reduction system of generator, comprise generator, it is characterized in that: be provided with the electrical signal collection unit in the circuit of described generator, the electrical signal collection unit connects chromacoder successively by the signal wire harness, electronic control unit and audio output device, the electrical signal collection unit gathers the electric signal of generator, and the electric signal of generator is sent to chromacoder, chromacoder is converted to the electric signal of electrical signal collection unit transmission the tach signal of generator, and the tach signal of generator is sent to electronic control unit, electronic control unit output control signal drives audio output device and sends sound wave, and the noise phase that described sound wave is corresponding with the generator real-time rotate speed is opposite, amplitude is identical.
Owing to adopt above technical scheme, during generator operation, electronic control unit can be exported control signal driving audio output device and send sound wave, the noise phase that described sound wave and generator real-time rotate speed are corresponding is opposite, amplitude is identical, the anti-phase sound wave that sends of the sound wave that produces of generator and audio output device offsets like this, and then the noise that produces when reducing generator operation, improve human pilot and passenger's environment inside car, avoided simultaneously the loss of adopting methods such as reducing generated output power and efficient to cause.
Description of drawings
Fig. 1 is fundamental diagram of the present invention.
Embodiment
A kind of noise reduction system of generator comprises generator 10, and generator 10 is provided with electrical signal collection unit 11, and electrical signal collection unit 11 connects chromacoder 20, electronic control unit 30 and audio output device 40 successively by the signal wire harness; Corresponding noise figure under described electronic control unit 30 each rotating speed of storage generator; Electrical signal collection unit 11 gathers the electric signal of generator 10, and the electric signal of generator 10 is sent to chromacoder 20, chromacoder 20 is converted to the electric signal of electrical signal collection unit 11 transmission the tach signal of generator 10, and the tach signal of generator 10 is sent to electronic control unit 30, electronic control unit 30 output control signals drive audio output devices 40 and send sound wave, and the noise phase that described sound wave and generator 10 real-time rotate speed are corresponding is opposite, amplitude is identical.
When generator 10 running, the imput process system of electronic control unit 30 carries out rough handling to the tach signal of the generator 10 of chromacoder 20 transmission, then the microprocessor through electronic control unit 30 carries out data calculating, output processing system by electronic control unit 30 is delivered to audio output device 40 fill orders to result of calculation at last, audio output device 40 sends sound wave, the noise phase that described sound wave is corresponding with the real-time rotate speed of generator 10 is opposite, amplitude is identical, the anti-phase sound wave that sends of the sound wave that produces of generator 10 and audio output device 40 offsets like this, and then the noise that produces when reducing generator 10 running, improve human pilot and passenger's environment inside car, avoided simultaneously the loss of adopting methods such as reducing generator 10 output powers and efficient to cause.
Further, described electrical signal collection unit 11 is connected with the output terminal of generator 10 direct supplys, can realize like this collection of the electric signal of the 11 pairs of generators 10 in electrical signal collection unit.
Further, as preferred version, described electrical signal collection unit 11 gathers the current signal that generator 10 produces, the electric current antijamming capability is strong, and electrical signal collection unit 11 and chromacoder 20 are closely signal transmission, in order to reduce line loss, the current signal that gathers generator 10 is comparatively desirable.
Further, electrical signal collection unit 11 comprises direct current transducer, described direct current transducer is Hall current sensor, Hall current sensor to waveform require low, applicable wide frequency range, and overload capacity is strong, and measurement range is wide, can be exactly with the current signal of the generator 10 that gathers, and the current signal of generator 10 is sent to chromacoder 20.
Further, described audio output device 40 is fixed on the cover of generator 10, and audio output device 40 is loudspeaker.As specific embodiments, described audio output device 40 can also be the sound equipment in the car, and the rp-wave that the sound wave that generator 10 runnings are sent and the sound equipment in loudspeaker or the car send is cancelled each other, and realizes the purpose of noise reduction.
Claims (7)
1. the noise reduction system of a generator, comprise generator (10), it is characterized in that: described generator (10) is provided with electrical signal collection unit (11), and electrical signal collection unit (11) connect chromacoder (20), electronic control unit (30) and audio output device (40) successively by the signal wire harness;
Corresponding noise figure under each rotating speed of described electronic control unit (30) storage generator;
Electrical signal collection unit (11) gathers the electric signal of generator (10), and the electric signal of generator (10) is sent to chromacoder (20), chromacoder (20) is converted to the electric signal of electrical signal collection unit (11) transmission the tach signal of generator (10), and the tach signal of generator (10) is sent to electronic control unit (30), electronic control unit (30) output control signal drives audio output device (40) and sends sound wave, and the noise phase that described sound wave is corresponding with generator (10) real-time rotate speed is opposite, amplitude is identical.
2. the noise reduction system of generator according to claim 1, it is characterized in that: described electrical signal collection unit (11) is connected with the output terminal of generator (10) direct supply.
3. the noise reduction system of generator according to claim 1 and 2 is characterized in that: the current signal that described electrical signal collection unit (11) collection generator (10) produces.
4. the noise reduction system of generator according to claim 3, it is characterized in that: described electrical signal collection unit (11) comprises direct current transducer.
5. the noise reduction system of generator according to claim 4, it is characterized in that: described direct current transducer is Hall current sensor.
6. the noise reduction system of generator according to claim 1, it is characterized in that: described audio output device (40) is fixed on the cover of generator (10), and audio output device (40) is loudspeaker.
7. the noise reduction system of generator according to claim 1 is characterized in that: described audio output device (40) is the sound equipment in the car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524377.8A CN102982798B (en) | 2012-12-07 | 2012-12-07 | Noise reduction system of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524377.8A CN102982798B (en) | 2012-12-07 | 2012-12-07 | Noise reduction system of generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102982798A true CN102982798A (en) | 2013-03-20 |
| CN102982798B CN102982798B (en) | 2015-07-15 |
Family
ID=47856709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210524377.8A Active CN102982798B (en) | 2012-12-07 | 2012-12-07 | Noise reduction system of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102982798B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383843A (en) * | 2013-07-24 | 2013-11-06 | 海尔集团公司 | Active noise reduction method and device for washing machine and washing machine |
| CN104217712A (en) * | 2014-09-19 | 2014-12-17 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Active noise reduction device of engineering machinery operation room and rock drilling machine |
| CN104716772A (en) * | 2013-12-11 | 2015-06-17 | 北汽福田汽车股份有限公司 | Active noise reduction device for motor of electric or hybrid electric vehicle |
| CN104860163A (en) * | 2014-02-20 | 2015-08-26 | 株式会社日立制作所 | Elevator Device And Noise Reducing Method |
| CN105449934A (en) * | 2015-11-23 | 2016-03-30 | 珠海格力电器股份有限公司 | Motor noise reduction system and method and range hood |
| CN105508255A (en) * | 2015-12-31 | 2016-04-20 | 惠州市美亚飞电器有限公司 | Compressor used for oxygenerator and having noise reduction function and noise reduction method |
| CN106981285A (en) * | 2017-03-28 | 2017-07-25 | 联想(北京)有限公司 | A kind of noise-reduction method and robot system |
| WO2018184434A1 (en) * | 2017-04-07 | 2018-10-11 | 比亚迪股份有限公司 | New energy vehicle, and active noise reduction method and system thereof |
| CN108962215A (en) * | 2018-08-31 | 2018-12-07 | 国网江苏省电力有限公司徐州供电分公司 | A kind of high-power electric reactor reduction noise control processing system and its control processing method based on self adaptive control |
| CN109552281A (en) * | 2018-12-19 | 2019-04-02 | 浙江零跑科技有限公司 | New energy vehicle electronic parking wheel motor denoising device |
| WO2019080505A1 (en) * | 2017-10-27 | 2019-05-02 | 比亚迪股份有限公司 | Active noise reduction method and system, and new energy vehicle |
| CN110979223A (en) * | 2018-09-30 | 2020-04-10 | 上海汽车集团股份有限公司 | Generator noise control method and device |
| CN114754383A (en) * | 2021-12-23 | 2022-07-15 | 浙江绍兴苏泊尔生活电器有限公司 | Noise reduction method and circuit of electromagnetic heating appliance and electromagnetic heating appliance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493142A (en) * | 2007-12-11 | 2009-07-29 | 通用电气公司 | Gearbox noise reduction by electrical drive control |
| CN101694051A (en) * | 2009-01-23 | 2010-04-14 | 南京乐金熊猫电器有限公司 | Noise decreasing method for washing machine and washing machine implementing the method |
| CN101863243A (en) * | 2009-04-16 | 2010-10-20 | 通用汽车环球科技运作公司 | Vehicle interior active noise is eliminated |
| CN102187389A (en) * | 2008-10-20 | 2011-09-14 | 伯斯有限公司 | Active noise reduction adaptive filter adaptation rate adjusting |
| CN102216980A (en) * | 2011-05-09 | 2011-10-12 | 华为技术有限公司 | Wheelwork noise control method and controller |
| CN102442246A (en) * | 2010-09-29 | 2012-05-09 | 通用汽车环球科技运作有限责任公司 | Aural smoothing system of vehicle |
-
2012
- 2012-12-07 CN CN201210524377.8A patent/CN102982798B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493142A (en) * | 2007-12-11 | 2009-07-29 | 通用电气公司 | Gearbox noise reduction by electrical drive control |
| CN102187389A (en) * | 2008-10-20 | 2011-09-14 | 伯斯有限公司 | Active noise reduction adaptive filter adaptation rate adjusting |
| CN101694051A (en) * | 2009-01-23 | 2010-04-14 | 南京乐金熊猫电器有限公司 | Noise decreasing method for washing machine and washing machine implementing the method |
| CN101863243A (en) * | 2009-04-16 | 2010-10-20 | 通用汽车环球科技运作公司 | Vehicle interior active noise is eliminated |
| CN102442246A (en) * | 2010-09-29 | 2012-05-09 | 通用汽车环球科技运作有限责任公司 | Aural smoothing system of vehicle |
| CN102216980A (en) * | 2011-05-09 | 2011-10-12 | 华为技术有限公司 | Wheelwork noise control method and controller |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383843A (en) * | 2013-07-24 | 2013-11-06 | 海尔集团公司 | Active noise reduction method and device for washing machine and washing machine |
| CN104716772B (en) * | 2013-12-11 | 2017-08-04 | 北汽福田汽车股份有限公司 | Electric or hybrid automobile motor active noise reducing device |
| CN104716772A (en) * | 2013-12-11 | 2015-06-17 | 北汽福田汽车股份有限公司 | Active noise reduction device for motor of electric or hybrid electric vehicle |
| CN104860163A (en) * | 2014-02-20 | 2015-08-26 | 株式会社日立制作所 | Elevator Device And Noise Reducing Method |
| CN104217712A (en) * | 2014-09-19 | 2014-12-17 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Active noise reduction device of engineering machinery operation room and rock drilling machine |
| CN104217712B (en) * | 2014-09-19 | 2018-02-27 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | The active noise reducing device and rock drilling machine of engineering machinery operating room |
| CN105449934A (en) * | 2015-11-23 | 2016-03-30 | 珠海格力电器股份有限公司 | Motor noise reduction system and method and range hood |
| CN105508255A (en) * | 2015-12-31 | 2016-04-20 | 惠州市美亚飞电器有限公司 | Compressor used for oxygenerator and having noise reduction function and noise reduction method |
| CN106981285A (en) * | 2017-03-28 | 2017-07-25 | 联想(北京)有限公司 | A kind of noise-reduction method and robot system |
| WO2018184434A1 (en) * | 2017-04-07 | 2018-10-11 | 比亚迪股份有限公司 | New energy vehicle, and active noise reduction method and system thereof |
| WO2019080505A1 (en) * | 2017-10-27 | 2019-05-02 | 比亚迪股份有限公司 | Active noise reduction method and system, and new energy vehicle |
| US11087734B1 (en) | 2017-10-27 | 2021-08-10 | Byd Company Limited | Active noise reduction method, system, and new energy vehicle |
| CN108962215A (en) * | 2018-08-31 | 2018-12-07 | 国网江苏省电力有限公司徐州供电分公司 | A kind of high-power electric reactor reduction noise control processing system and its control processing method based on self adaptive control |
| CN110979223A (en) * | 2018-09-30 | 2020-04-10 | 上海汽车集团股份有限公司 | Generator noise control method and device |
| CN109552281A (en) * | 2018-12-19 | 2019-04-02 | 浙江零跑科技有限公司 | New energy vehicle electronic parking wheel motor denoising device |
| CN114754383A (en) * | 2021-12-23 | 2022-07-15 | 浙江绍兴苏泊尔生活电器有限公司 | Noise reduction method and circuit of electromagnetic heating appliance and electromagnetic heating appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102982798B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102982798B (en) | Noise reduction system of generator | |
| CN102904504B (en) | A kind of car permanent magnet synchronous motor control system | |
| CN203444957U (en) | Transformer self-adaptation active noise reduction device | |
| EP4309576A3 (en) | Method and system for monitoring hemodynamics | |
| CN203069993U (en) | Electric locomotive semi-physical simulation system | |
| CN205498646U (en) | Electric automobile power drive system | |
| CN105449934A (en) | Motor noise reduction system and method and range hood | |
| CN104716772A (en) | Active noise reduction device for motor of electric or hybrid electric vehicle | |
| CN106672224A (en) | Unmanned aerial vehicle and control method thereof | |
| US8816830B2 (en) | Motor control system and the method of controlling motor | |
| CN205141927U (en) | Motor noise reduction system and range hood | |
| CN102582466B (en) | Wobble compensation of an encoder speed signal for an electric motor | |
| CN103731080A (en) | Electric motor sound production method | |
| CN106777817B (en) | Harmonic analysis modeling method of urban rail transit electric energy quality simulation analysis system | |
| JP6778536B2 (en) | Electromagnetic noise analyzer, control device and control method | |
| CN103259471B (en) | Method for driving stepping motor based on smooth self-adaptation | |
| CN105909242A (en) | Integrated data acquirer for acoustic logging | |
| CN203841721U (en) | Pulse active probe of ultrasound transcranial Doppler blood stream analyzer | |
| CN105911928A (en) | Electric motor controller, electric motor system and joint adopting electric motor system | |
| CN104139732A (en) | Loudspeaker box volume adjusting method and device | |
| CN109802703A (en) | Active across electric network power line carrier communication system and method | |
| CN107757537B (en) | Sound control method and device for vehicle-mounted engine | |
| CN207943005U (en) | A kind of electric vehicle wireless control system | |
| CN210000140U (en) | operation controller system device for linear motor of vehicle | |
| CN207488481U (en) | A kind of radar signal regulating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |