EP3877972A1 - Système de contrôle actif feedforward du bruit de roulement d'un véhicule automobile avec capteurs de référence à proximité du système multimédia - Google Patents
Système de contrôle actif feedforward du bruit de roulement d'un véhicule automobile avec capteurs de référence à proximité du système multimédiaInfo
- Publication number
- EP3877972A1 EP3877972A1 EP19790540.9A EP19790540A EP3877972A1 EP 3877972 A1 EP3877972 A1 EP 3877972A1 EP 19790540 A EP19790540 A EP 19790540A EP 3877972 A1 EP3877972 A1 EP 3877972A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- noise
- motor vehicle
- vehicle
- fixed
- sensor
- 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- Withdrawn
Links
Classifications
-
- 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
- G10K11/17879—General system configurations using both a reference signal and an error signal
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
- G10K2210/12821—Rolling noise; Wind and body noise
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3031—Hardware, e.g. architecture
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3214—Architectures, e.g. special constructional features or arrangements of features
Definitions
- the present invention relates to the field of the reduction of noise pollution in a motor vehicle, and in particular of the noise generated by the rolling of tires on the road or the engine.
- the active element such as the motor or the contact between the tire and the road, introduces a force at one point of the vehicle, which generates a vibration transmitted to the entire structure of the vehicle and in particular to all interior panels (windows, roof, floor, etc.). The vibrations of these panels then generate noise inside the passenger compartment.
- the noise passageway is mostly aerial. This noise passes directly through the structure of the vehicle.
- active noise control The principle of active noise control, known as “active noise control”, acronym “ANC” in Anglo-Saxon terms consists of working on acoustics and vibration in the linear domain.
- ANC active noise control
- the noise added by the active control is created by sound generators in the passenger compartment which are conventionally the vehicle speakers used for the multimedia system.
- the reference signals must be the cause of the noise in the passenger compartment.
- This causality is mathematically quantified by the coherence function which is between 0 and 1 and which represents the part of the power of a signal which is the consequence of another signal. For example if the consistency between the reference signal and the noise is 0.5, this means that half of the noise power is due to the reference signal. And the control algorithm will only be able to reduce this part of the power, and therefore - in the best of cases - halve the power of the noise. In the case where there are several reference signals (to improve the correlation), it is the multiple coherence function which quantifies the causality. The consistency between the reference signals and the noise must be as strong as possible.
- the delay constraint as the rolling noise is random, we cannot predict at a time what will happen at the next time. So the reference signal of the source must be earlier in terms of causality to interior noise in order to allow time for the control algorithm to calculate the commands for the speakers and for these commands to propagate to the point in the passenger compartment where the noise is controlled . If the delay necessary for the computation and propagation of the commands is T, then the propagation delay between the reference signal and the interior noise must be greater than T. This delay can be quantified by the intercorrelation function between the reference signal and noise.
- Active control by feedforward requires, in addition to microphones, the use of sensors measuring the source of the noise to be controlled.
- these sources are the four contacts between the tires and the road.
- Source measurement sensors can, for example, measure displacements, rotations, speeds and accelerations in translation or rotation, stresses in a structural part, etc.
- the objective of the invention is therefore to develop a low-cost method and system applicable in series on motor vehicles and configured to attenuate road noise.
- the object of the invention is an active vehicle noise control system comprising a multimedia system comprising an electronic card integrated in a housing fixed in the motor vehicle.
- the active rolling noise control system includes microphones for error signals and at least one sensor for reference signals fixed in the passenger compartment of the vehicle, near the multimedia system housing, and in particular the electronic card of the multimedia system.
- the rolling noise reduction system of a motor vehicle uses as reference signals the measurements coming from one or more sensors (called “reference sensors”) fixed directly or near the electronic card of the multimedia system. which already contains most of the components necessary for active control, such as the computer and the audio amplifier. Thus, elements already existing on vehicles are used, in a protected environment which requires little or no use of cables.
- the senor is fixed directly to the electronic card of the multimedia system.
- This embodiment removes cables and connectors.
- the reference sensor is directly fixed to the structure of the vehicle inside the passenger compartment. It is connected to the multimedia system by a single cable which is used both for this sensor and for error microphones. It is a serial digital data bus that passes information from all sensors through a single cable. This limits the number of cables and connectors.
- the reference sensor can be fixed to the cross member of the dashboard of the motor vehicle.
- the system comprising at least two sensors fixed on a location to be chosen on the electronic card, or on the structure of the vehicle inside the passenger compartment, for example the dashboard crossmember.
- the invention relates to a motor vehicle comprising a multimedia system comprising an electronic card integrated in a housing fixed in the motor vehicle and an active rolling noise control system as described above.
- FIG. 2 very schematically shows a motor vehicle comprising an active control system of the rolling noise of a motor vehicle according to an embodiment of the invention
- FIG. 4 shows an active control system of the rolling noise of a motor vehicle according to a second embodiment of the invention.
- FIG. 5 shows an active control system of the rolling noise of a motor vehicle according to a third embodiment of the invention.
- FIG 1 there is shown very schematically an electronic card 1 of a multimedia system (radio, navigation) of a motor vehicle intended to be integrated in a fixed box 2, for example on the cross member 3 of the dashboard (not shown) of the vehicle.
- a multimedia system radio, navigation
- the multimedia system electronic card 1 contains many components necessary for active control, such as in particular the computer 4 configured to perform active noise control and the audio amplifier 5.
- a system 10 for active rolling noise control comprises a sensor 12 fixed directly to said electronic card 1.
- a sensor 12 fixed directly to said electronic card 1.
- the so-called solidian rolling noise vibrates the entire structure of the vehicle, including the housing containing the electronics of the multimedia system, such as radio and navigation.
- This housing is rigidly fixed to the cross member under the dashboard of the motor vehicle.
- the source of the noise can be measured with sensors fixed directly on the motherboard of the multimedia system which already houses the processor which executes the active noise control program (ANC).
- ANC active noise control program
- the active rolling noise control system 10 further comprises one or more microphones 7 fixed in the passenger compartment of the vehicle. These microphones 7 make it possible to supply error signals. Thus, we have information on the error by the microphones in the passenger compartment (as in the feedback architecture) but also information on the sources of the noise to be attenuated, i.e. signals reference.
- the noise added by the active control is created by sound generators in the passenger compartment which are conventionally vehicle speakers 8 used for the multimedia system.
- the embodiment illustrated in Figure 2 differs from the embodiment illustrated in Figure 1 only by the installation of the sensor 12 of the active noise control system 10. Indeed, if it is not possible to install a sensor on the multimedia system card, for example because it cannot be modified, one can consider installing the sensor 12 on the structure of the vehicle when interior of the passenger compartment as close as possible to the multimedia system housing, for example on the crossmember 3 of the dashboard. The sensor 12 thus remains in a protected environment and the wiring required is relatively short.
- the embodiment illustrated in Figure 3 differs from the embodiment illustrated in Figure 2 only by the installation of the sensor 12 of the active noise control system 10.
- the sensor 12 is directly fixed to the structure of the vehicle inside the passenger compartment. It is connected to the multimedia system by the cable 6 connecting the multimedia box 2 to the error microphones 7 present in the passenger compartment of the vehicle.
- Such an active noise control system uses reference signals which respect both the coherence and delay constraints, which makes it particularly effective. Indeed, it makes it possible to attenuate the noise over a wide frequency band without amplifying the other frequencies.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1860157A FR3088134B1 (fr) | 2018-11-05 | 2018-11-05 | Systeme de controle actif feedforward du bruit de roulement d'un vehicule automobile avec capteurs de reference a proximite du systeme multimedia |
| PCT/EP2019/079010 WO2020094408A1 (fr) | 2018-11-05 | 2019-10-24 | Système de contrôle actif feedforward du bruit de roulement d'un véhicule automobile avec capteurs de référence à proximité du système multimédia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3877972A1 true EP3877972A1 (fr) | 2021-09-15 |
Family
ID=65951654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19790540.9A Withdrawn EP3877972A1 (fr) | 2018-11-05 | 2019-10-24 | Système de contrôle actif feedforward du bruit de roulement d'un véhicule automobile avec capteurs de référence à proximité du système multimédia |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3877972A1 (fr) |
| CN (1) | CN113272892B (fr) |
| FR (1) | FR3088134B1 (fr) |
| WO (1) | WO2020094408A1 (fr) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015132937A1 (fr) * | 2014-03-06 | 2015-09-11 | 三菱電機株式会社 | Dispositif d'atténuation de bruit |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2252657A (en) | 1990-10-24 | 1992-08-12 | Lotus Car | Vibration and sound generation in vehicles |
| JP2000020072A (ja) * | 1998-07-02 | 2000-01-21 | Yanmar Diesel Engine Co Ltd | 消音装置 |
| US7606376B2 (en) * | 2003-11-07 | 2009-10-20 | Harman International Industries, Incorporated | Automotive audio controller with vibration sensor |
| JP2006118694A (ja) * | 2004-09-21 | 2006-05-11 | Nissan Motor Co Ltd | 振動抑制装置の最適配置構成 |
| FR2946203B1 (fr) * | 2009-05-28 | 2016-07-29 | Ixmotion | Procede et dispositif d'attenuation d'un bruit a bande etroite dans un habitacle d'un vehicule |
| DE102013211409A1 (de) * | 2013-06-18 | 2014-12-18 | Robert Bosch Gmbh | Abstandssensor für ein Kraftfahrzeug und Anordnung mehrerer Abstandssensoren |
| JP2015205659A (ja) * | 2014-04-23 | 2015-11-19 | 株式会社ブリヂストン | 車両の振動低減システム |
| KR101628119B1 (ko) * | 2014-08-11 | 2016-06-08 | 현대자동차 주식회사 | 소음제어시스템 및 그 방법 |
| EP3130897B1 (fr) * | 2015-08-10 | 2022-10-19 | Harman Becker Automotive Systems GmbH | Détection de bruit et de vibrations |
| EP3156999B1 (fr) * | 2015-10-16 | 2022-03-23 | Harman Becker Automotive Systems GmbH | Contrôle du bruit d'un moteur |
| DE102015122194A1 (de) * | 2015-12-18 | 2017-06-22 | Robert Bosch Automotive Steering Gmbh | Verfahren zur Maskierung und/oder zur Reduzierung störender Geräusche oder deren Auffälligkeit bei dem Betrieb eines Kraftfahrzeugs |
| EP3633670A1 (fr) | 2016-05-11 | 2020-04-08 | Harman Becker Automotive Systems GmbH | Procédé et système permettant de sélectionner les emplacements de capteur sur un véhicule pour commande de bruit active |
| US9899018B2 (en) * | 2016-06-24 | 2018-02-20 | GM Global Technology Operations LLC | Method, system and apparatus for addressing road noise |
| JP6462752B2 (ja) * | 2017-03-30 | 2019-01-30 | 株式会社Subaru | 車両用消音装置 |
-
2018
- 2018-11-05 FR FR1860157A patent/FR3088134B1/fr active Active
-
2019
- 2019-10-24 EP EP19790540.9A patent/EP3877972A1/fr not_active Withdrawn
- 2019-10-24 WO PCT/EP2019/079010 patent/WO2020094408A1/fr not_active Ceased
- 2019-10-24 CN CN201980079547.6A patent/CN113272892B/zh active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015132937A1 (fr) * | 2014-03-06 | 2015-09-11 | 三菱電機株式会社 | Dispositif d'atténuation de bruit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113272892B (zh) | 2023-11-03 |
| WO2020094408A1 (fr) | 2020-05-14 |
| CN113272892A (zh) | 2021-08-17 |
| FR3088134B1 (fr) | 2022-01-21 |
| FR3088134A1 (fr) | 2020-05-08 |
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