DE19900782A1 - Active tyre or road surface noise reduction device for automobile uses capacitive sound sources within wheel housing for active compensation of detected noise - Google Patents

Active tyre or road surface noise reduction device for automobile uses capacitive sound sources within wheel housing for active compensation of detected noise

Info

Publication number
DE19900782A1
DE19900782A1 DE19900782A DE19900782A DE19900782A1 DE 19900782 A1 DE19900782 A1 DE 19900782A1 DE 19900782 A DE19900782 A DE 19900782A DE 19900782 A DE19900782 A DE 19900782A DE 19900782 A1 DE19900782 A1 DE 19900782A1
Authority
DE
Germany
Prior art keywords
sound
road surface
active
wheel housing
control electronics
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.)
Withdrawn
Application number
DE19900782A
Other languages
German (de)
Inventor
Ruediger Ufermann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19900782A priority Critical patent/DE19900782A1/en
Publication of DE19900782A1 publication Critical patent/DE19900782A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/16—Mud-guards or wings; Wheel cover panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The noise reduction device uses an active capacitive sound source (7,17) at one or both sides of the wheel housing (3), incorporating a noise detector (9,15) coupled to an electronic control device (1,6), supplying a signal to the sound source via an intermediate amplifier (2,5). The sound sources are made of a water-proof material, or coated with a water-proof material.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur aktiven Verminderung der Fahrgeräusche von Reifen bzw. der durch sie hervorgerufenen Fahrbahngeräusche und die den Reifen teilweise umge­ bende Vorrichtung nach der im Oberbegriff des Anspruchs 1 angegebenen Art.The invention relates to a device for actively reducing the driving noise of Tire or the road noise caused by it and the tire partially reversed Bende device according to the type specified in the preamble of claim 1.

Geräusche der zuvor genannten Art stellen für Verkehrsteilnehmer oder davon betroffene Anwohner nicht nur eine Belästigung, sondern auch eine gesundheitliche Gefährdung dar.Noises of the aforementioned type pose for road users or those affected Residents are not only a nuisance, but also a health hazard.

Um die gewünschte Wirkung zu erzielen, werden die Schallstrahlen durch möglichst nahe am Entstehungsort angebrachte Schallschirme unschädlich gemacht. Dies ist mit passiven Systemen nicht einfach zu realisieren, da diese zumeist mechanisch ausladend sind und so die Manövrierfähig­ keit des Fahrzeugs in besonderen Situationen einschränkt, um die teilweise Zerstörung der Schall­ schirme zu verhindern.In order to achieve the desired effect, the sound rays are as close as possible Sound screens attached at the place of origin are rendered harmless. This is with passive systems not easy to implement, since these are mostly mechanically expansive and therefore maneuverable of the vehicle in special situations limits the partial destruction of the sound to prevent umbrellas.

Der Erfindung liegt die Aufgabe zugrunde, durch ein aktives System die durch Reifen von Kraftfahrzeugen abgegebenen Reifen- bzw. Fahrbahngeräusche wirkungsvoll zu verringern.The invention has for its object by an active system by the tires of Effectively reduce motor vehicle tire or road noise.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind durch die von diesem Anspruch abhängigen An­ sprüche gekennzeichnet.Advantageous developments of the invention are due to the dependent on this claim sayings marked.

In folgendem wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels in Verbin­ dung mit einer Zeichnung beschrieben. Dabei zeigt:In the following the invention is based on a preferred embodiment in conjunction described with a drawing. It shows:

Fig. 1 eine vereinfachte Schnittzeichnung in Vorderansicht. Die jeweiligen zur Fahrbahnfläche (10) weisenden Enden des Radgehäuses (3) sind mit den angebrachten oder integrierten Schallgebern (7, 17) versehen, die die in den akustischen Entkopplungen (8, 16) montierten Schallempfänger (9, 15) enthalten. Trifft nun aus der Schallabstrahlrichtung (12, 13) eine Schallwelle auf die Schall­ empfänger (9, 15), so werden diese Signale zur Verstärker- und Steuerelektronik (1, 6) geleitet, die zur Erkennung und Ausschaltung systemschädlicher Frequenzen auch untereinander korrespondieren können. Nach Optimierung der Signale gehen diese an die Verstärker (2, 5), die dann in einer ersten Ausführungsform die flächenhaft ausgeführten kapazitiven Schallgeber (7, 17) leistungsmäßig mit einem frequenzkompensierendem Signal ansteuern, so daß eine Verminderung des Geräuschpegels erreicht wird. Der Schallgeber (7, 17) kann auch gleichzeitig Sender und Empfänger sein und aus wasser- und schmutzabweisendem Material bestehen oder auch damit beschichtet werden. Fig. 1 is a simplified sectional drawing in front view. The ends of the wheel housing ( 3 ) facing the road surface ( 10 ) are provided with the attached or integrated sound transmitters ( 7 , 17 ), which contain the sound receivers ( 9 , 15 ) mounted in the acoustic decouplings ( 8 , 16 ). If a sound wave hits the sound receiver ( 9 , 15 ) from the direction of sound emission ( 12 , 13 ), these signals are sent to the amplifier and control electronics ( 1 , 6 ), which can also correspond to each other to detect and switch off harmful frequencies. After the signals have been optimized, they go to the amplifiers ( 2 , 5 ), which in a first embodiment then control the capacitive acoustic transducers ( 7 , 17 ) with a frequency-compensating signal, so that the noise level is reduced. The sound generator ( 7 , 17 ) can also be a transmitter and receiver at the same time and consist of water and dirt-repellent material or can also be coated with it.

BezugszeichenlisteReference list

11

Steuerelektronik
Control electronics

22nd

Verstärker
amplifier

33rd

Radgehäuse
Wheel housing

44th

Rad
wheel

55

Verstärker
amplifier

66

Steuerelektronik
Control electronics

77

Schallgeber
Sounder

88th

Akustische Entkopplung
Acoustic decoupling

99

Schallempfänger
Sound receiver

1010th

Fahrbahnfläche
Road surface

1111

Schallabstrahlrichtung
Direction of sound emission

1212th

Schallabstrahlrichtung
Direction of sound emission

1313

Schallabstrahlrichtung
Direction of sound emission

1414

Schallabstrahlrichtung
Direction of sound emission

1515

Schallempfänger
Sound receiver

1616

Akustische Entkopplung
Acoustic decoupling

1717th

Schallgeber
Sounder

Claims (9)

1. Vorrichtung zur Verminderung von Reifen- bzw. Fahrbahngeräuschen, die durch drehende Reifen von Kraftfahrzeugen entstehen, dadurch gekennzeichnet, daß an einem oder beiden zur Fahr­ bahnfläche (10) weisenden Enden des Radgehäuses (3) ein aktiver Schallgeber (7, 17) mit inte­ griertem Schallempfänger (9, 15), der die Schallfrequenzen und deren Energie der Schallabstrahl­ richtung (12, 13) aufnimmt, angebracht ist und jeweils durch die akustische Entkopplung (8, 16) spritzwassergeschützt aufgehängt ist und dessen Signale zur Steuerelektronik (1, 6) geleitet werden, die ihrerseits frequenzschädlich signalmäßig gekoppelt sind und über die Verstärker (2, 5) deren gesteuerte Leistung an die Schallgeber (7) abgeben, wobei die Steuerelektronik so ausgelegt ist, daß die durch die Reifen- bzw. Fahrbahngeräusche entstehenden Frequenzen durch die von den Schallge­ bern (7, 17) erzeugten und in Richtung der Schallabstrahlrichtung (12, 13) wirksamen Frequenzen, kompensiert werden.1. A device for reducing tire or road noise, which arise from rotating tires of motor vehicles, characterized in that at one or both of the road surface ( 10 ) facing ends of the wheel housing ( 3 ) an active sound generator ( 7 , 17 ) with Integrated sound receiver ( 9 , 15 ), which absorbs the sound frequencies and their energy in the direction of sound emission ( 12 , 13 ), is attached and is suspended from splashing water by the acoustic decoupling ( 8 , 16 ) and its signals to the control electronics ( 1 , 6 ) are routed, which in turn are coupled in terms of frequency-damaging signals and emit their controlled power to the sounder ( 7 ) via the amplifiers ( 2 , 5 ), the control electronics being designed in such a way that the frequencies arising from the tire or roadway noise are caused by the from the Schallge bern ( 7 , 17 ) and in the direction of the sound emission direction ( 12 , 13 ) effective Freque coins, are compensated. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Schallgeber (7, 17) ein flä­ chenhaft kapazitiv, piezoelektrisch, magnetostriktiv, elektrorheologisch, induktiv oder magnetisch gesteuerter Schallerzeuger ist und auch gleichzeitig Sender und Empfänger sein kann.2. Apparatus according to claim 1, characterized in that the sound generator ( 7 , 17 ) is a flat capacitive, piezoelectric, magnetostrictive, electrorheological, inductive or magnetically controlled sound generator and can also be a transmitter and receiver at the same time. 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Schallgeber (7, 17) mehrteilig oder einteilig das Radgehäuse (3) ersetzt und gleichzeitig als Spritzschutz fungiert.3. Apparatus according to claim 1 and 2, characterized in that the sound generator ( 7 , 17 ) in several parts or in one piece replaces the wheel housing ( 3 ) and simultaneously acts as a splash guard. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schallgeber (7, 17) jeweils in dem der Fahrbahnfläche (10) zugewandten Bereich ihre Schallwellen in Schallab­ strahlrichtung (11, 14) bis zu einem Winkel von 90° zur Fahrbahnfläche (10) abstrahlen können.4. Device according to one of claims 1 to 3, characterized in that the sound transmitter ( 7 , 17 ) in each case in the area of the road surface ( 10 ) facing their sound waves in the direction of sound radiation ( 11 , 14 ) up to an angle of 90 ° Can radiate road surface ( 10 ). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schallemp­ fänger (9, 15) außerhalb der Schallgeber (7, 17) oder innerhalb des jeweils zugehörigen Reifens auf dessen Felgen montiert werden und per Funk ihre Signale an die Steuerelektronik (1, 6) senden, oder auch mit einer reifenintegrierten Luftdruckmessung elektronisch und softwaremäßig kombiniert sein können.5. Device according to one of claims 1 to 4, characterized in that the Schallemp catcher ( 9 , 15 ) outside the sound transmitter ( 7 , 17 ) or within the associated tire on its rims and be radio-controlled to the control electronics ( 1 , 6 ) send, or can also be electronically and software combined with a tire-integrated air pressure measurement. 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß Schallgeber (7, 17) der Kontur des Rades (4) so tief und so beabstandet folgen, wie mechanisch zulässig.6. Device according to one of claims 1 to 5, characterized in that sounders ( 7 , 17 ) follow the contour of the wheel ( 4 ) as deep and as spaced as mechanically permissible. 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß Schallgeber (7, 17) ganz oder teilweise starr oder flexibel sind. 7. Device according to one of claims 1 to 6, characterized in that sounders ( 7 , 17 ) are wholly or partially rigid or flexible. 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Schallgeber (7, 17) aus einem wasser- und schmutzabweisenden Material bestehen oder damit beschichtet sind.8. Device according to one of claims 1 to 7, characterized in that the sounders ( 7 , 17 ) consist of a water- and dirt-repellent material or are coated with it. 9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Steuerelek­ tronik (1, 6) und die Verstärker (2, 5) integraler Bestandteil der Schallgeber (7, 17) sind oder auch außerhalb davon plaziert sind.9. Device according to one of claims 1 to 8, characterized in that the control electronics ( 1 , 6 ) and the amplifier ( 2 , 5 ) are an integral part of the sound generator ( 7 , 17 ) or are placed outside of it.
DE19900782A 1999-01-12 1999-01-12 Active tyre or road surface noise reduction device for automobile uses capacitive sound sources within wheel housing for active compensation of detected noise Withdrawn DE19900782A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19900782A DE19900782A1 (en) 1999-01-12 1999-01-12 Active tyre or road surface noise reduction device for automobile uses capacitive sound sources within wheel housing for active compensation of detected noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19900782A DE19900782A1 (en) 1999-01-12 1999-01-12 Active tyre or road surface noise reduction device for automobile uses capacitive sound sources within wheel housing for active compensation of detected noise

Publications (1)

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DE19900782A1 true DE19900782A1 (en) 2000-07-13

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176114A (en) * 2017-03-30 2017-09-19 上海空间推进研究所 Wheel acoustic hood
WO2017157596A1 (en) * 2016-03-17 2017-09-21 Jaguar Land Rover Limited Apparatus and method for noise cancellation
EP3349210A1 (en) * 2017-01-12 2018-07-18 Alpine Electronics, Inc. Active noise reduction apparatus and method for a vehicle
DE102020103902A1 (en) 2020-02-14 2021-08-19 Audi Aktiengesellschaft Device for compensation of vehicle noise, vehicle and method for compensation of vehicle noise
EP3979236A1 (en) * 2020-09-30 2022-04-06 Bridgestone Europe NV/SA Active noise cancelling system and method for exterior noise reduction
DE102021211089A1 (en) 2021-10-01 2023-04-06 Zf Friedrichshafen Ag Minimizing tire-induced noise on a vehicle's body

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017157596A1 (en) * 2016-03-17 2017-09-21 Jaguar Land Rover Limited Apparatus and method for noise cancellation
GB2551464A (en) * 2016-03-17 2017-12-27 Jaguar Land Rover Ltd Apparatus and method for noise cancellation
EP3349210A1 (en) * 2017-01-12 2018-07-18 Alpine Electronics, Inc. Active noise reduction apparatus and method for a vehicle
CN107176114A (en) * 2017-03-30 2017-09-19 上海空间推进研究所 Wheel acoustic hood
CN107176114B (en) * 2017-03-30 2019-08-23 上海空间推进研究所 Wheel acoustic hood
DE102020103902A1 (en) 2020-02-14 2021-08-19 Audi Aktiengesellschaft Device for compensation of vehicle noise, vehicle and method for compensation of vehicle noise
EP3979236A1 (en) * 2020-09-30 2022-04-06 Bridgestone Europe NV/SA Active noise cancelling system and method for exterior noise reduction
WO2022069593A1 (en) * 2020-09-30 2022-04-07 Bridgestone Europe Nv/Sa Active noise cancelling system and method for exterior noise reduction
DE102021211089A1 (en) 2021-10-01 2023-04-06 Zf Friedrichshafen Ag Minimizing tire-induced noise on a vehicle's body

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