BR9710041A - Sistema de controle de fuído ativo e processo para reduç~o de fuído - Google Patents

Sistema de controle de fuído ativo e processo para reduç~o de fuído

Info

Publication number
BR9710041A
BR9710041A BR9710041A BR9710041A BR9710041A BR 9710041 A BR9710041 A BR 9710041A BR 9710041 A BR9710041 A BR 9710041A BR 9710041 A BR9710041 A BR 9710041A BR 9710041 A BR9710041 A BR 9710041A
Authority
BR
Brazil
Prior art keywords
fluid
control system
reduction process
active
fluid control
Prior art date
Application number
BR9710041A
Other languages
English (en)
Inventor
Clas A Jacobson
Duane C Mccormick
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of BR9710041A publication Critical patent/BR9710041A/pt

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
    • G10K11/17853—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
    • G10K11/17875—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
    • 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
    • G10K11/1781—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
    • 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
    • G10K11/17857—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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/129—Vibration, e.g. instead of, or in addition to, acoustic 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
    • G10K2210/3026—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
    • G10K2210/3039—Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain
    • G10K2210/30391—Resetting of the filter parameters or changing the algorithm according to prevailing conditions
    • 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
    • G10K2210/3217—Collocated sensor and cancelling actuator, e.g. "virtual earth" designs
    • 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
    • G10K2210/3229—Transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vibration Prevention Devices (AREA)
  • Feedback Control In General (AREA)
  • Exhaust Silencers (AREA)
  • Control Of Electric Motors In General (AREA)
BR9710041A 1996-06-26 1997-05-14 Sistema de controle de fuído ativo e processo para reduç~o de fuído BR9710041A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/672,168 US5828760A (en) 1996-06-26 1996-06-26 Non-linear reduced-phase filters for active noise control
PCT/US1997/008132 WO1997050078A1 (en) 1996-06-26 1997-05-14 Nonlinear reduced-phase filters for active noise control

Publications (1)

Publication Number Publication Date
BR9710041A true BR9710041A (pt) 1999-08-10

Family

ID=24697421

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9710041A BR9710041A (pt) 1996-06-26 1997-05-14 Sistema de controle de fuído ativo e processo para reduç~o de fuído

Country Status (14)

Country Link
US (1) US5828760A (pt)
EP (1) EP0907948B1 (pt)
JP (1) JP2000513112A (pt)
CN (1) CN1137464C (pt)
AU (1) AU712840B2 (pt)
BR (1) BR9710041A (pt)
DE (1) DE69702345T2 (pt)
DK (1) DK0907948T3 (pt)
ES (1) ES2149595T3 (pt)
HK (1) HK1021060A1 (pt)
MY (1) MY116912A (pt)
NO (1) NO986058D0 (pt)
TW (1) TW346733B (pt)
WO (1) WO1997050078A1 (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP782698A0 (en) * 1998-12-21 1999-01-21 University Of Western Australia, The Noise reduction apparatus
GB9920883D0 (en) 1999-09-03 1999-11-10 Titon Hardware Ventilation assemblies
CN100555411C (zh) * 2004-11-08 2009-10-28 松下电器产业株式会社 主动降噪装置
KR100768523B1 (ko) * 2005-03-09 2007-10-18 주식회사 휴먼터치소프트 필름스피커를 이용한 능동소음제거 방법 및 장치
CN101389158B (zh) * 2008-10-22 2012-08-15 南京大学 一种应用于有源噪声控制的组合次级声源设计方法
US9020158B2 (en) * 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US9202455B2 (en) * 2008-11-24 2015-12-01 Qualcomm Incorporated Systems, methods, apparatus, and computer program products for enhanced active noise cancellation
DE102008061552A1 (de) * 2008-12-11 2010-07-01 Areva Energietechnik Gmbh Verfahren und Vorrichtung zur Geräuschminderung für einen elektrischen Transformator
CN101521008B (zh) * 2009-04-02 2011-08-03 南京大学 有源吸声尖劈及其制作方法
DE102010052833B4 (de) 2010-11-29 2017-11-23 Austriamicrosystems Ag Schaltungsanordnung und Verfahren zur aktiven Geräuschunterdrückung
JP5713771B2 (ja) * 2011-04-11 2015-05-07 株式会社オーディオテクニカ 防音送話器
US8596050B2 (en) 2011-08-19 2013-12-03 United Technologies Corporation Sound attenuating heat exchanger for an internal combustion engine
SG11201602643XA (en) 2013-10-02 2016-05-30 Univ Putra Malaysia Method and apparatus for nonlinear compensation in an active noise control system
CN107923411B (zh) * 2015-08-18 2021-04-23 株式会社村田制作所 送风装置
ITUB20159630A1 (it) * 2015-12-23 2017-06-23 Magneti Marelli Spa Dispositivo per l'acquisizione ed il condizionamento di un segnale acustico generato da una sorgente disposta nel vano motore di un veicolo
CN108280249A (zh) * 2017-12-18 2018-07-13 西北工业大学 用于多层有源隔声结构的波数域误差传感策略构建方法
JP7306650B2 (ja) * 2019-05-20 2023-07-11 日東電工株式会社 アクティブノイズコントロールシステム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625083A (en) * 1985-04-02 1986-11-25 Poikela Timo J Voice operated switch
JPH01245795A (ja) * 1988-03-28 1989-09-29 Daikin Ind Ltd 電子消音装置
US5010576A (en) * 1990-01-22 1991-04-23 Westinghouse Electric Corp. Active acoustic attenuation system for reducing tonal noise in rotating equipment
JP2530779B2 (ja) * 1991-09-05 1996-09-04 株式会社日立製作所 騒音低減装置
JP2872547B2 (ja) * 1993-10-13 1999-03-17 シャープ株式会社 格子型フィルタを用いた能動制御方法および装置

Also Published As

Publication number Publication date
NO986058L (no) 1998-12-22
DE69702345T2 (de) 2001-01-25
DK0907948T3 (da) 2000-11-06
CN1137464C (zh) 2004-02-04
US5828760A (en) 1998-10-27
MY116912A (en) 2004-04-30
NO986058D0 (no) 1998-12-22
TW346733B (en) 1998-12-01
AU712840B2 (en) 1999-11-18
ES2149595T3 (es) 2000-11-01
EP0907948B1 (en) 2000-06-21
DE69702345D1 (de) 2000-07-27
HK1021060A1 (en) 2000-05-26
CN1223738A (zh) 1999-07-21
JP2000513112A (ja) 2000-10-03
AU3006397A (en) 1998-01-14
EP0907948A1 (en) 1999-04-14
WO1997050078A1 (en) 1997-12-31

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A ANUIDADE.

B08G Application fees: restoration [chapter 8.7 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements