ES2084028T3 - ACTIVE CONTROL OF SOUNDS AND / OR VIBRATIONS. - Google Patents

ACTIVE CONTROL OF SOUNDS AND / OR VIBRATIONS.

Info

Publication number
ES2084028T3
ES2084028T3 ES90907216T ES90907216T ES2084028T3 ES 2084028 T3 ES2084028 T3 ES 2084028T3 ES 90907216 T ES90907216 T ES 90907216T ES 90907216 T ES90907216 T ES 90907216T ES 2084028 T3 ES2084028 T3 ES 2084028T3
Authority
ES
Spain
Prior art keywords
source
sensor
values
vibration
signal
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.)
Expired - Lifetime
Application number
ES90907216T
Other languages
Spanish (es)
Inventor
Graham Paul Eatwell
Christopher Mark Dorling
William Richard Hodson
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
Application granted granted Critical
Publication of ES2084028T3 publication Critical patent/ES2084028T3/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
    • G10K11/17879—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
    • 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
    • G10K11/17821—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 input signals only
    • 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
    • G10K11/17821—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 input signals only
    • G10K11/17825—Error 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
    • G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
    • 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
    • G10K2210/3024—Expert systems, e.g. artificial intelligence
    • 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
    • G10K2210/3032—Harmonics or sub-harmonics
    • 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
    • G10K2210/3042—Parallel processing
    • 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
    • G10K2210/3051—Sampling, e.g. variable rate, synchronous, decimated or interpolated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Cosmetics (AREA)
  • Vibration Prevention Devices (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

UN SISTEMA DE CONTROL ACTIVO DE SONIDO O VIBRACION PARA COMPENSAR EL RUIDO O VIBRACION PRODUCIDO POR UNA FUENTE PERIODICA DE PERIODICIDAD ALTERNANTE, POR LA QUE LOS SENSORES (6) SIENTEN EL RUIDO Y VIBRACION EXISTENTE, LAS SEÑALES DEL SENSOR SON MUESTREADAS VARIAS VECES POR CICLO MEDIANTE UN ACD (8) ACTIVADO POR UNA SALIDA DE SEÑAL DE UN SENSOR QUE DETECTA LA POSICION DE LA FUENTE EN SU CICLO, SIENDO LA SEÑAL MUESTREADA TRANSFORMADA EN VALORES DE SEÑAL DIRIGIDAS POR UN ACTUADOR DE COMPENSACION MEDIANTE UNA SERIE DE MODULOS DE TRANSFORMACION Y ADAPTACION (11-13, 15) BASADOS EN ALGORITMOS EN FUNCION DE LA FRECUENCIA DE LA FUENTE, Y LOS VALORES DE LA SEÑAL SON ALMACENADOS EN UN ELEMENTO DE MEMORIA (1) Y ACTUALIZADOS CONTINUAMENTE POR LOS VALORES DERIVADOS DE LAS SEÑALES MUESTREADAS POR EL SENSOR.AN ACTIVE SOUND OR VIBRATION CONTROL SYSTEM TO COMPENSATE THE NOISE OR VIBRATION PRODUCED BY A PERIODIC SOURCE OF ALTERNATING PERIODICITY, BY WHICH THE SENSORS (6) FEEL THE EXISTING NOISE AND VIBRATION, THE SENSOR SIGNALS ARE SHOWN SEVERAL TIMES PER CYCLE AN ACD (8) ACTIVATED BY A SIGNAL OUTPUT FROM A SENSOR THAT DETECTS THE POSITION OF THE SOURCE IN ITS CYCLE, THE SIGNED SAMPLE BEING TRANSFORMED INTO SIGNAL VALUES DIRECTED BY A COMPENSATION ACTUATOR THROUGH A SERIES OF TRANSFORMATION AND ADAPTATION MODULES ( 11-13, 15) BASED ON ALGORITHMS ACCORDING TO THE FREQUENCY OF THE SOURCE, AND THE VALUES OF THE SIGNAL ARE STORED IN A MEMORY ELEMENT (1) AND CONTINUOUSLY UPDATED BY THE VALUES DERIVED FROM THE SIGNALS SAMPLED BY THE SENSOR.

ES90907216T 1989-04-25 1990-04-20 ACTIVE CONTROL OF SOUNDS AND / OR VIBRATIONS. Expired - Lifetime ES2084028T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8909433A GB2230920B (en) 1989-04-25 1989-04-25 Active sound and/or vibration control

Publications (1)

Publication Number Publication Date
ES2084028T3 true ES2084028T3 (en) 1996-05-01

Family

ID=10655687

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90907216T Expired - Lifetime ES2084028T3 (en) 1989-04-25 1990-04-20 ACTIVE CONTROL OF SOUNDS AND / OR VIBRATIONS.

Country Status (8)

Country Link
EP (1) EP0470153B1 (en)
JP (1) JPH04505221A (en)
AU (1) AU635266B2 (en)
CA (1) CA2049332C (en)
DE (1) DE69025604T2 (en)
ES (1) ES2084028T3 (en)
GB (1) GB2230920B (en)
WO (1) WO1990013108A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265277B (en) * 1992-03-17 1996-07-24 Fuji Heavy Ind Ltd Noise reduction system for automobile compartment
FR2692709B1 (en) * 1992-06-18 1994-09-16 Renault Active noise control device in the passenger compartment of a motor vehicle.
DE69423531T2 (en) * 1993-02-02 2000-07-20 Honda Motor Co Ltd Vibration / noise reduction device
US5660255A (en) * 1994-04-04 1997-08-26 Applied Power, Inc. Stiff actuator active vibration isolation system
DE19944985B4 (en) * 1999-09-20 2005-04-28 Siemens Ag Measurement method for current measurement with noise suppression
US8302456B2 (en) 2006-02-23 2012-11-06 Asylum Research Corporation Active damping of high speed scanning probe microscope components

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717027A (en) * 1980-07-03 1982-01-28 Hitachi Ltd Vibration reducing device of electric machinery
JPS58153313A (en) * 1982-03-08 1983-09-12 Hitachi Ltd Low noise stationary induction apparatus
GB2122052B (en) * 1982-06-09 1986-01-29 Plessey Co Plc Reducing noise or vibration
GB8525800D0 (en) * 1985-10-18 1985-11-20 Contranoise Ltd Transfer function generation
EP0285632B1 (en) * 1986-10-07 1993-06-09 Adaptive Control Limited Active vibration control
JPH01159406A (en) * 1987-12-15 1989-06-22 Mitsui Eng & Shipbuild Co Ltd Method for active muffling of propeller noise and device therefor
GB2222053B (en) * 1988-08-17 1993-03-31 Topexpress Ltd Signal processing means for sensing a periodic signal in the presence of another interfering periodic noise

Also Published As

Publication number Publication date
WO1990013108A1 (en) 1990-11-01
DE69025604D1 (en) 1996-04-04
DE69025604T2 (en) 1996-10-24
EP0470153B1 (en) 1996-02-28
GB2230920B (en) 1993-12-22
GB8909433D0 (en) 1989-06-14
AU635266B2 (en) 1993-03-18
AU5545690A (en) 1990-11-16
CA2049332A1 (en) 1990-10-26
GB2230920A (en) 1990-10-31
CA2049332C (en) 2000-08-01
EP0470153A1 (en) 1992-02-12
JPH04505221A (en) 1992-09-10

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