GB9023459D0 - Active vibration control system - Google Patents

Active vibration control system

Info

Publication number
GB9023459D0
GB9023459D0 GB909023459A GB9023459A GB9023459D0 GB 9023459 D0 GB9023459 D0 GB 9023459D0 GB 909023459 A GB909023459 A GB 909023459A GB 9023459 A GB9023459 A GB 9023459A GB 9023459 D0 GB9023459 D0 GB 9023459D0
Authority
GB
United Kingdom
Prior art keywords
signals
vibration
region
control system
vibration 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.)
Pending
Application number
GB909023459A
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.)
Noise Cancellation Technologies Inc
Original Assignee
Noise Cancellation Technologies Inc
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 Noise Cancellation Technologies Inc filed Critical Noise Cancellation Technologies Inc
Priority to GB909023459A priority Critical patent/GB9023459D0/en
Publication of GB9023459D0 publication Critical patent/GB9023459D0/en
Priority to ES91918376T priority patent/ES2121790T3/en
Priority to EP91918376A priority patent/EP0555266B1/en
Priority to PCT/GB1991/001849 priority patent/WO1992008223A1/en
Priority to AT91918376T priority patent/ATE170654T1/en
Priority to JP3516923A priority patent/JPH06502257A/en
Priority to DE69130112T priority patent/DE69130112T2/en
Priority to AU87393/91A priority patent/AU660423B2/en
Priority to CA002095033A priority patent/CA2095033C/en
Priority to DK91918376T priority patent/DK0555266T3/en
Pending 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
    • G10K11/1781—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
    • G10K11/17817—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 between the output signals and the error signals, i.e. secondary path
    • 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
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • 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
    • G10K11/17883—General system configurations using both a reference signal and an error signal the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed
    • 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
    • G10K2210/3023—Estimation of noise, e.g. on error signals
    • G10K2210/30232—Transfer functions, e.g. impulse response
    • 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
    • G10K2210/3045—Multiple acoustic inputs, single acoustic output
    • 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
    • G10K2210/3046—Multiple acoustic inputs, multiple acoustic outputs
    • 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
    • G10K2210/3055—Transfer function of the acoustic system
    • 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
    • G10K2210/3212—Actuator details, e.g. composition or microstructure
    • 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
    • G10K2210/3216—Cancellation means disposed in the vicinity of the source

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Vibration Prevention Devices (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

An active vibration control system in which an input sensor (2) generates first signals representative of a primary vibration field, actuators (1) are driven by second signals to produce a secondary vibration field, monitoring sensors (3) producing third signals are positioned in a first region (4) differing from a second region where vibration is to be controlled, a controller (5) is responsive to the first signals to generate second signals which reduce vibration in the second region, and the controller is adaptive with reference to the first and third signals to maintain reduced vibration in the second region.
GB909023459A 1990-10-29 1990-10-29 Active vibration control system Pending GB9023459D0 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB909023459A GB9023459D0 (en) 1990-10-29 1990-10-29 Active vibration control system
DK91918376T DK0555266T3 (en) 1990-10-29 1991-10-22 Active vibration control system
AT91918376T ATE170654T1 (en) 1990-10-29 1991-10-22 SYSTEM FOR ACTIVE CONTROL OF VIBRATIONS
EP91918376A EP0555266B1 (en) 1990-10-29 1991-10-22 Active vibration control system
PCT/GB1991/001849 WO1992008223A1 (en) 1990-10-29 1991-10-22 Active vibration control system
ES91918376T ES2121790T3 (en) 1990-10-29 1991-10-22 ACTIVE VIBRATION CONTROL SYSTEM.
JP3516923A JPH06502257A (en) 1990-10-29 1991-10-22 Active vibration control system
DE69130112T DE69130112T2 (en) 1990-10-29 1991-10-22 SYSTEM FOR ACTIVE VIBRATION CONTROL
AU87393/91A AU660423B2 (en) 1990-10-29 1991-10-22 Active vibration control system
CA002095033A CA2095033C (en) 1990-10-29 1991-10-22 Active vibration control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909023459A GB9023459D0 (en) 1990-10-29 1990-10-29 Active vibration control system

Publications (1)

Publication Number Publication Date
GB9023459D0 true GB9023459D0 (en) 1990-12-12

Family

ID=10684492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB909023459A Pending GB9023459D0 (en) 1990-10-29 1990-10-29 Active vibration control system

Country Status (10)

Country Link
EP (1) EP0555266B1 (en)
JP (1) JPH06502257A (en)
AT (1) ATE170654T1 (en)
AU (1) AU660423B2 (en)
CA (1) CA2095033C (en)
DE (1) DE69130112T2 (en)
DK (1) DK0555266T3 (en)
ES (1) ES2121790T3 (en)
GB (1) GB9023459D0 (en)
WO (1) WO1992008223A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9218465D0 (en) * 1992-08-29 1992-10-14 Adaptive Control Ltd Active sound control systems and sound reproduction systems
US5381485A (en) * 1992-08-29 1995-01-10 Adaptive Control Limited Active sound control systems and sound reproduction systems
US5481615A (en) * 1993-04-01 1996-01-02 Noise Cancellation Technologies, Inc. Audio reproduction system
US8095268B2 (en) 2004-10-29 2012-01-10 Bose Corporation Active suspending
US7983813B2 (en) 2004-10-29 2011-07-19 Bose Corporation Active suspending
US7962261B2 (en) 2007-11-12 2011-06-14 Bose Corporation Vehicle suspension
DE102008061552A1 (en) * 2008-12-11 2010-07-01 Areva Energietechnik Gmbh Method for reducing noise of electrical transformer, involves determining current operating point of transformer and providing measurement protocol for characterizing operating point dependent behavior of transformer
EP3304541B1 (en) * 2015-06-06 2022-03-02 Oppenheimer, Yehuda A system and method for active reduction of a predefined audio acoustic noise by using synchronization signals
JP6917914B2 (en) * 2018-01-18 2021-08-11 株式会社奥村組 Active noise controlled sound field simulation method and simulation device
JP6917937B2 (en) * 2018-03-27 2021-08-11 株式会社奥村組 Evaluation method and evaluation device for sound field simulation by active noise control
DE102020116451B4 (en) 2020-06-23 2024-02-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Device and method for active noise suppression in a vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689821A (en) * 1985-09-23 1987-08-25 Lockheed Corporation Active noise control system
GB8610744D0 (en) * 1986-05-01 1986-06-04 Plessey Co Plc Adaptive disturbance suppression
EP0285632B1 (en) * 1986-10-07 1993-06-09 Adaptive Control Limited Active vibration control

Also Published As

Publication number Publication date
DK0555266T3 (en) 1999-05-31
DE69130112T2 (en) 1999-03-04
EP0555266A1 (en) 1993-08-18
ATE170654T1 (en) 1998-09-15
WO1992008223A1 (en) 1992-05-14
CA2095033A1 (en) 1992-04-30
DE69130112D1 (en) 1998-10-08
JPH06502257A (en) 1994-03-10
EP0555266B1 (en) 1998-09-02
ES2121790T3 (en) 1998-12-16
AU660423B2 (en) 1995-06-29
AU8739391A (en) 1992-05-26
CA2095033C (en) 1997-12-30

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