CA2138552A1 - Systeme de commande utilisant des filtres harmoniques - Google Patents

Systeme de commande utilisant des filtres harmoniques

Info

Publication number
CA2138552A1
CA2138552A1 CA 2138552 CA2138552A CA2138552A1 CA 2138552 A1 CA2138552 A1 CA 2138552A1 CA 2138552 CA2138552 CA 2138552 CA 2138552 A CA2138552 A CA 2138552A CA 2138552 A1 CA2138552 A1 CA 2138552A1
Authority
CA
Canada
Prior art keywords
control system
harmonic filters
harmonic
obtaining
active
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
CA 2138552
Other languages
English (en)
Other versions
CA2138552C (fr
Inventor
Graham P. Eatwell
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
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 CA002138552A priority Critical patent/CA2138552C/fr
Publication of CA2138552A1 publication Critical patent/CA2138552A1/fr
Application granted granted Critical
Publication of CA2138552C publication Critical patent/CA2138552C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10K11/17821—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
    • G10K11/17823—Reference signals, e.g. ambient acoustic environment
    • 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
    • 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
    • G10K11/1787—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
    • G10K2210/121—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
    • G10K2210/3028—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
    • G10K2210/3032—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
    • G10K2210/3051—Sampling, e.g. variable rate, synchronous, decimated or interpolated
    • 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
    • G10K2210/512—Wide band, e.g. non-recurring signals

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Feedback Control In General (AREA)
  • Networks Using Active Elements (AREA)
CA002138552A 1992-06-25 1992-06-25 Systeme de commande utilisant des filtres harmoniques Expired - Fee Related CA2138552C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002138552A CA2138552C (fr) 1992-06-25 1992-06-25 Systeme de commande utilisant des filtres harmoniques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002138552A CA2138552C (fr) 1992-06-25 1992-06-25 Systeme de commande utilisant des filtres harmoniques
PCT/US1992/005228 WO1994000911A1 (fr) 1992-06-25 1992-06-25 Systeme de commande utilisant des filtres harmoniques

Publications (2)

Publication Number Publication Date
CA2138552A1 true CA2138552A1 (fr) 1994-01-06
CA2138552C CA2138552C (fr) 1998-07-07

Family

ID=22231180

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002138552A Expired - Fee Related CA2138552C (fr) 1992-06-25 1992-06-25 Systeme de commande utilisant des filtres harmoniques

Country Status (5)

Country Link
EP (1) EP0647372B1 (fr)
CA (1) CA2138552C (fr)
DE (1) DE69229282T2 (fr)
DK (1) DK0647372T3 (fr)
WO (1) WO1994000911A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361303A (en) * 1993-04-01 1994-11-01 Noise Cancellation Technologies, Inc. Frequency domain adaptive control system
JP3572486B2 (ja) * 1994-03-25 2004-10-06 本田技研工業株式会社 振動騒音制御装置
US5713438A (en) * 1996-03-25 1998-02-03 Lord Corporation Method and apparatus for non-model based decentralized adaptive feedforward active vibration control
CN112504616A (zh) * 2020-11-18 2021-03-16 中国空气动力研究与发展中心 一种天平动态力谐波抑制方法及装置
CN119179954B (zh) * 2024-11-26 2025-02-11 中国电力科学研究院有限公司 一种筛选次同步振荡曲线的方法和系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328591A (en) * 1979-04-23 1982-05-04 Baghdady Elie J Method and apparatus for signal detection, separation and suppression
US4513249A (en) * 1979-04-23 1985-04-23 Baghdady Elie J Method and apparatus for signal detection, separation and suppression
US4713782A (en) * 1984-08-23 1987-12-15 Hewlett-Packard Company Method and apparatus for measuring a transfer function
DE3707760C1 (de) * 1987-03-11 1988-06-23 Ant Nachrichtentech Verfahren zur Taktsynchronisation
GB2255256B (en) * 1991-04-12 1994-11-02 W S Atkins Engineering Science Method of and apparatus for reducing vibrations

Also Published As

Publication number Publication date
DE69229282D1 (de) 1999-07-01
EP0647372A4 (fr) 1996-02-07
CA2138552C (fr) 1998-07-07
DE69229282T2 (de) 2000-02-24
EP0647372B1 (fr) 1999-05-26
EP0647372A1 (fr) 1995-04-12
WO1994000911A1 (fr) 1994-01-06
DK0647372T3 (da) 1999-12-06

Similar Documents

Publication Publication Date Title
AU7440191A (en) Noise suppression system
CA2179620A1 (fr) Systeme adaptatif de precompensation et d'asservissement
EP0622779A3 (fr) Dispositif d'atténuation actif du bruit muni d'un filtre adaptif multiple.
HK146894A (en) An adaptive median filter system
DE69128221D1 (de) Akustische adaptive Vorrichtung zur Löschung von Geräuschsignalen.
EP0332890A3 (fr) Suppression du bruit d'un signal de parole bruité
EP0568127A3 (en) Noise attenuation system
AU7355594A (en) Variable gain active noise cancellation system with improved residual noise sensing
AU658476B2 (en) Adaptive noise reduction circuit for a sound reproduction system
CA2226083A1 (fr) Compensation spectrale de bruit destinee a l'annulation d'echo
EP0674305A3 (fr) Arrangement de contrôle du bruit ou vibration
CA2197729A1 (fr) Appareil et methode pour la suppression adaptative des vibrations dans les systemes mecaniques
WO1997023068A3 (fr) Dispositif d'elimination de bruit adaptatif, systeme de reduction de bruit et emetteur-recepteur
AU8682491A (en) System for the reception of signals from a passive transponder
GB9225212D0 (en) Adaptive noise cancellation device
DE59309582D1 (de) Verfahren zur Beseitigung von Störungen bei Stereo-Rundfunk-Signalen
FI963769L (fi) Akustisen kaiun kumoaja, jossa on adaptiivinen suodin, jossa siirrytään taajuustasoon
EP0595663A3 (fr) Réduction de bruit de signaux vidéo.
CA2159589A1 (fr) Systeme de commande adaptatif frequentiel
CA2082086A1 (fr) Systeme d'attenuation actif a correlation muni d'entrees de signaux d'erreur et de correction
EP0600740A3 (en) Video signal processing for ghost cancellation.
EP0612057A3 (en) Active noise control systems.
CA2138552A1 (fr) Systeme de commande utilisant des filtres harmoniques
EP0555786A3 (en) Active noise cancellation system
GB9202992D0 (en) Noise suppression systems

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed