EP0774749A3 - Active sound attenuation system for a vehicle - Google Patents

Active sound attenuation system for a vehicle Download PDF

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Publication number
EP0774749A3
EP0774749A3 EP96116233A EP96116233A EP0774749A3 EP 0774749 A3 EP0774749 A3 EP 0774749A3 EP 96116233 A EP96116233 A EP 96116233A EP 96116233 A EP96116233 A EP 96116233A EP 0774749 A3 EP0774749 A3 EP 0774749A3
Authority
EP
European Patent Office
Prior art keywords
gain
controller
sound pressure
vehicle
active sound
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
Application number
EP96116233A
Other languages
German (de)
French (fr)
Other versions
EP0774749B1 (en
EP0774749A2 (en
Inventor
Helmut Spannheimer
Johannes Waldinger
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0774749A2 publication Critical patent/EP0774749A2/en
Publication of EP0774749A3 publication Critical patent/EP0774749A3/en
Application granted granted Critical
Publication of EP0774749B1 publication Critical patent/EP0774749B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • 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
    • G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17813—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • 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
    • G10K11/1783—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G10K11/17833—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels
    • G10K11/17835—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels using detection of abnormal input signals
    • 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
    • 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
    • G10K2210/3012—Algorithms
    • 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
    • G10K2210/3025—Determination of spectrum characteristics, e.g. FFT
    • 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
    • G10K2210/3026—Feedback
    • 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
    • G10K2210/3028—Filtering, e.g. Kalman filters or special analogue or digital filters
    • 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
    • G10K2210/3033—Information contained in memory, e.g. stored signals or transfer functions
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/503—Diagnostics; Stability; Alarms; Failsafe

Abstract

Bei einem aktiven Schallabsorptionssystem für ein Kraftfahrzeug mit zumindest einem Lautsprecher zur Erzeugung von Schalldruck, der von einem als Eingangsgröße den Schalldruck im Innenraum verarbeitenden Regler angesteuert wird, wird ein zuverlässiges Kriterium erfaßt, das eine genaue Aussage über die Wirksamkeit bzw. Anfachung des Systems zuläßt, um damit die optimale Verstärkung einzustellen und den Fall der wesentlich zu großen Verstärkung, der zur Regelkreisinstabilität führt, zu vermeiden. Hierzu wird zeitweilig die Regler-Verstärkung verändert, wobei mit den verschiedenen Regler-Verstärkungen die Differenz der jeweiligen Schalldruckspektren gebildet wird und die optimale Regler-Verstärkung im Hinblick auf eine gewisse Differenz eingestellt wird.

Figure 00000001
In the case of an active sound absorption system for a motor vehicle with at least one loudspeaker for generating sound pressure which is controlled by a controller which processes the sound pressure in the interior as an input variable, a reliable criterion is recorded which allows a precise statement to be made about the effectiveness or fanning out of the system, in order to set the optimal gain and to avoid the case of the excessively large gain, which leads to control loop instability. For this purpose, the controller gain is temporarily changed, the difference between the respective sound pressure spectra being formed with the various controller gains and the optimal controller gain being set with regard to a certain difference.
Figure 00000001
EP96116233A 1995-11-18 1996-10-10 Active sound attenuation system for a vehicle Expired - Lifetime EP0774749B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543128 1995-11-18
DE19543128A DE19543128A1 (en) 1995-11-18 1995-11-18 Active sound absorption system for a motor vehicle

Publications (3)

Publication Number Publication Date
EP0774749A2 EP0774749A2 (en) 1997-05-21
EP0774749A3 true EP0774749A3 (en) 1999-07-28
EP0774749B1 EP0774749B1 (en) 2003-10-08

Family

ID=7777858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116233A Expired - Lifetime EP0774749B1 (en) 1995-11-18 1996-10-10 Active sound attenuation system for a vehicle

Country Status (3)

Country Link
EP (1) EP0774749B1 (en)
DE (2) DE19543128A1 (en)
ES (1) ES2207661T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045627A1 (en) * 2006-09-27 2008-04-03 Robert Bosch Gmbh Arrangement for active noise compensation for an electronically controlled windscreen wiper system of a motor vehicle
DE102008013846A1 (en) * 2008-03-12 2009-09-17 Claas Selbstfahrende Erntemaschinen Gmbh Agricultural work machine with noise-damped cabin
DE102015219144A1 (en) * 2015-10-02 2017-04-06 Robert Bosch Gmbh Method for operating an active gas line system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4236155A1 (en) * 1992-10-20 1994-04-21 Gsp Sprachtechnologie Ges Fuer Actively reducing internal noise in motor vehicle - using measuring microphone(s) and loudspeaker(s) to compensate detected noise by propagating sound field of opposite phase to that of disturbing noise
DE4303921A1 (en) * 1993-02-10 1994-08-11 Bayerische Motoren Werke Ag Method for measuring a differential sound by subtracting a sound just emitted via a loudspeaker from a total sound
US5384853A (en) * 1992-03-19 1995-01-24 Nissan Motor Co., Ltd. Active noise reduction apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3471370B2 (en) * 1991-07-05 2003-12-02 本田技研工業株式会社 Active vibration control device
US5485523A (en) * 1992-03-17 1996-01-16 Fuji Jukogyo Kabushiki Kaisha Active noise reduction system for automobile compartment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384853A (en) * 1992-03-19 1995-01-24 Nissan Motor Co., Ltd. Active noise reduction apparatus
DE4236155A1 (en) * 1992-10-20 1994-04-21 Gsp Sprachtechnologie Ges Fuer Actively reducing internal noise in motor vehicle - using measuring microphone(s) and loudspeaker(s) to compensate detected noise by propagating sound field of opposite phase to that of disturbing noise
DE4303921A1 (en) * 1993-02-10 1994-08-11 Bayerische Motoren Werke Ag Method for measuring a differential sound by subtracting a sound just emitted via a loudspeaker from a total sound

Also Published As

Publication number Publication date
EP0774749B1 (en) 2003-10-08
EP0774749A2 (en) 1997-05-21
DE19543128A1 (en) 1997-05-22
DE59610759D1 (en) 2003-11-13
ES2207661T3 (en) 2004-06-01

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