CN102982798B - Noise reduction system of generator - Google Patents

Noise reduction system of generator Download PDF

Info

Publication number
CN102982798B
CN102982798B CN201210524377.8A CN201210524377A CN102982798B CN 102982798 B CN102982798 B CN 102982798B CN 201210524377 A CN201210524377 A CN 201210524377A CN 102982798 B CN102982798 B CN 102982798B
Authority
CN
China
Prior art keywords
generator
noise reduction
noise
audio output
electronic control
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.)
Active
Application number
CN201210524377.8A
Other languages
Chinese (zh)
Other versions
CN102982798A (en
Inventor
战菁菁
周虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
Chery Automobile Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN201210524377.8A priority Critical patent/CN102982798B/en
Publication of CN102982798A publication Critical patent/CN102982798A/en
Application granted granted Critical
Publication of CN102982798B publication Critical patent/CN102982798B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

The noise reduction system of generator
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 electromagnetic noise, aerodynamic noise and mechanical noise three kinds, and generator low speed electromagnetic noise problem brings discomfort as the inherent shortcoming of conventional motor to driver and passenger.Find after deliberation, generator is when rotating speed is lower, and electromagnetic noise accounts for more than 80% of generator overall noise, and therefore, reduction electromagnetic noise just effectively can reduce the overall noise in generator low-speed running situation.
The method of noise reduction is divided into active noise reduction and passive noise reduction two kinds.Active noise reduction is exactly produce the reverse sound wave equal with outside noise by noise reduction system, is neutralized by noise, thus realizes the effect of noise reduction.Passive noise reduction is restriction or noise insulation on noise transmission path.At present, mostly the method reducing generator noise is to adopt passive noise reduction, namely by optimizing the structure of generator amature, stator, or reduce output power and efficiency reduces noise, but finally all cannot contain electromagnetic noise completely, and input and output is not directly proportional.The phase place of generator electromagnetic noise is only relevant with rotating speed with its structure with frequency, when its structure is shaped, the phase place of generator electromagnetic noise is only relevant with its rotating speed with frequency, and the electromagnetic noise therefore adopting the method for active noise reduction to reduce generator possesses feasibility.
Summary of the invention
The object of this invention is to provide a kind of noise reduction system of generator, the noise produced when this system initiatively eliminates 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: in the circuit of described generator, be provided with electrical signal collection unit, electrical signal collection unit is by signal wire harness connection signal conversion equipment successively, electronic control unit and audio output device, electrical signal collection unit gathers the electric signal of generator, and the electric signal of generator is sent to chromacoder, the electric signal that electrical signal collection unit transmits is converted to the tach signal of generator by chromacoder, and the tach signal of generator is sent to electronic control unit, electronic control unit exports control signal and drives audio output device to send sound wave, the noise phase that described sound wave is corresponding with generator real-time rotate speed is contrary, amplitude is identical.
Owing to adopting above technical scheme, during generator operation, electronic control unit can export control signal and drive audio output device to send sound wave, the noise phase that described sound wave is corresponding with generator real-time rotate speed is contrary, amplitude is identical, the sound wave that such generator produces and the anti-phase sound wave that audio output device sends offset, and then the noise produced when reducing generator operation, improve the environment inside car of human pilot and passenger, avoid the loss adopting and reduce the method such as generated output power and efficiency and cause simultaneously.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present invention.
Embodiment
A noise reduction system for generator, comprises generator 10, and generator 10 is provided with electrical signal collection unit 11, and electrical signal collection unit 11 is by signal wire harness connection signal conversion equipment 20, electronic control unit 30 and audio output device 40 successively; The noise figure that described electronic control unit 30 is corresponding under storing each rotating speed of 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, the electric signal that electrical signal collection unit 11 transmits is converted to the tach signal of generator 10 by chromacoder 20, and the tach signal of generator 10 is sent to electronic control unit 30, electronic control unit 30 exports control signal and drives audio output device 40 to send sound wave, and the noise phase that described sound wave is corresponding with generator 10 real-time rotate speed is contrary, amplitude is identical.
When generator 10 operates, the tach signal of imput process system to the generator 10 that chromacoder 20 transmits of electronic control unit 30 carries out rough handling, then the microprocessor through electronic control unit 30 carries out data calculating, output processing system finally by electronic control unit 30 is delivered to audio output device 40 fill order result of calculation, 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 contrary, amplitude is identical, the sound wave that such generator 10 produces and the anti-phase sound wave that audio output device 40 sends offset, and then reduce the noise produced when generator 10 operates, improve the environment inside car of human pilot and passenger, avoid the loss adopting and reduce the method such as generator 10 output power and efficiency and cause simultaneously.
Further, described electrical signal collection unit 11 is connected with the output terminal of generator 10 direct supply, can realize the collection of the electric signal of electrical signal collection unit 11 pairs of generators 10 like this.
Further, preferably, described electrical signal collection unit 11 gathers the current signal that generator 10 produces, electric current antijamming capability is strong, and electrical signal collection unit 11 and chromacoder 20 are closely Signal transmissions, in order to reduce line loss, the current signal gathering generator 10 is ideal.
Further, electrical signal collection unit 11 comprises direct current transducer, described direct current transducer is Hall current sensor, the requirement of Hall current sensor to waveform is low, be suitable for wide frequency range, and overload capacity is strong, measurement range is wide, exactly by the current signal of the generator 10 of collection, and the current signal of generator 10 can be 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 car, and the rp-wave that generator 10 sound equipment operated in the sound wave and loudspeaker or car that send sends cancels each other, and realizes the object 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), electrical signal collection unit (11) is by signal wire harness successively connection signal conversion equipment (20), electronic control unit (30) and audio output device (40);
The noise figure that described electronic control unit (30) is corresponding under storing each rotating speed of 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), the electric signal that electrical signal collection unit (11) transmits is converted to the tach signal of generator (10) by chromacoder (20), and the tach signal of generator (10) is sent to electronic control unit (30), electronic control unit (30) exports control signal and drives audio output device (40) to send sound wave, the noise phase that described sound wave is corresponding with generator (10) real-time rotate speed is contrary, amplitude is identical.
2. the noise reduction system of generator according to claim 1, 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: described electrical signal collection unit (11) gathers the current signal that generator (10) produces.
4. the noise reduction system of generator according to claim 3, 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, is characterized in that: described direct current transducer is Hall current sensor.
6. the noise reduction system of generator according to claim 1, 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 car.
CN201210524377.8A 2012-12-07 2012-12-07 Noise reduction system of generator Active CN102982798B (en)

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 CN102982798A (en) 2013-03-20
CN102982798B true 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)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
JP6368106B2 (en) * 2014-02-20 2018-08-01 株式会社日立製作所 Elevator device and noise reduction method
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 smoke exhaust ventilator
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
CN108694935B (en) * 2017-04-07 2020-06-19 比亚迪股份有限公司 New energy vehicle and active noise reduction method and system thereof
CN109720288B (en) * 2017-10-27 2019-11-22 比亚迪股份有限公司 A kind of active denoising method, system and new energy vehicle
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2528185T3 (en) * 2007-12-11 2015-02-05 General Electric Company Gearbox noise reduction by electric drive control
US8306240B2 (en) * 2008-10-20 2012-11-06 Bose Corporation Active noise reduction adaptive filter adaptation rate adjusting
KR20100086897A (en) * 2009-01-23 2010-08-02 엘지전자 주식회사 Method for noise reducing in washing machine and washing machine having the same
US8045725B2 (en) * 2009-04-16 2011-10-25 GM Global Technology Operations LLC Vehicle interior active noise cancellation
US9214153B2 (en) * 2010-09-29 2015-12-15 GM Global Technology Operations LLC Aural smoothing of a vehicle
CN102216980B (en) * 2011-05-09 2012-12-19 华为技术有限公司 Wheelwork noise control method and controller

Also Published As

Publication number Publication date
CN102982798A (en) 2013-03-20

Similar Documents

Publication Publication Date Title
CN102982798B (en) Noise reduction system of generator
CN205498646U (en) Electric automobile power drive system
CN203444957U (en) Transformer self-adaptation active noise reduction device
CN102904504A (en) Permanent magnet synchronous motor system for automobile
CN201780363U (en) Integrated testing system of electric motor
CN203069993U (en) Electric locomotive semi-physical simulation system
CN104716772B (en) Electric or hybrid automobile motor active noise reducing device
WO2009079577A3 (en) A method qf electric energy transfer between a vehicle and a stationary collector
CN102582466B (en) Wobble compensation of an encoder speed signal for an electric motor
CN202511969U (en) Device for diagnosing faults of gearbox
CN105974235A (en) Generator driving system used for electromagnetic compatibility test
CN102705268A (en) Noise reduction fan
CN203554199U (en) ECM motor composition
CN205679961U (en) A kind of electric machine controller and electric system and the joint using this electric system
CN105182104A (en) Wave energy-tidal current energy integrated testing platform and working condition simulation method
CN104139732A (en) Loudspeaker box volume adjusting method and device
CN104864968A (en) Wireless temperature transmitter
CN104065229A (en) Electric power generation integration inductor motor
CN103487071A (en) Intelligent sensor for train wheels
JP2018192227A (en) Pwm cycle voltage conversion control device that uses dry cell-shaped radio reception drive device so as to wirelessly operate railroad model vehicle that is operated by stationary controller unit
WO2018088870A3 (en) Vehicle speed sensor device, abs apparatus including same, and operating method thereof
CN203519155U (en) Omnidirectional self-powered wireless vibration sensing device for mining use
CN207943005U (en) A kind of electric vehicle wireless control system
CN203502028U (en) Train wheel intelligent sensor
CN202384965U (en) Three-phase asynchronous motor

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