WO2002069316A3 - System for computationally efficient active control of tonal sound or vibration - Google Patents

System for computationally efficient active control of tonal sound or vibration Download PDF

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Publication number
WO2002069316A3
WO2002069316A3 PCT/US2002/005916 US0205916W WO02069316A3 WO 2002069316 A3 WO2002069316 A3 WO 2002069316A3 US 0205916 W US0205916 W US 0205916W WO 02069316 A3 WO02069316 A3 WO 02069316A3
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
control
vibration
tone
interest
Prior art date
Application number
PCT/US2002/005916
Other languages
French (fr)
Other versions
WO2002069316A2 (en
Inventor
William Arthur Welsh
Douglas G Macmartin
Alan M Finn
Original Assignee
Sikorsky Aircraft 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 Sikorsky Aircraft Corp filed Critical Sikorsky Aircraft Corp
Priority to AU2002244175A priority Critical patent/AU2002244175A1/en
Publication of WO2002069316A2 publication Critical patent/WO2002069316A2/en
Publication of WO2002069316A3 publication Critical patent/WO2002069316A3/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B5/00—Anti-hunting arrangements
    • G05B5/01—Anti-hunting arrangements electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B21/00—Systems involving sampling of the variable controlled
    • G05B21/02—Systems involving sampling of the variable controlled electric
    • 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
    • G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
    • 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
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • 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
    • G10K2210/10—Applications
    • G10K2210/128—Vehicles
    • G10K2210/1281—Aircraft, e.g. spacecraft, airplane or helicopter
    • 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
    • G10K2210/3032—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
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3053—Speeding up computation or convergence, or decreasing the computational load
    • 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

Abstract

A noise or vibration control system reduces a sampling rate and reduces a control rate to improve computation efficiency. The present invention permits the use of a sample frequency (fs) that is less than twice the frequency of interest (fd). The sensed signals are filtered to extract a particular frequency range with a lower bound given by (2n-1)*fs/2 and an upper bound given by (2n+1)*fs/2, where n is an integer chosen so that the frequency of interest (fd) is within the extracted frequency range. The control commands are also calculated at a reduced rate, which is dependent upon the bandwidth of the tone, rather than the absolute frequency of the tone. Rather than updating the control signals directly on the sampled sensor data yk as it enters the computer, the control computations are done on the harmonic ak and bk, or equivalently on the magnitude and phase.
PCT/US2002/005916 2001-02-27 2002-02-27 System for computationally efficient active control of tonal sound or vibration WO2002069316A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002244175A AU2002244175A1 (en) 2001-02-27 2002-02-27 System for computationally efficient active control of tonal sound or vibration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27147901P 2001-02-27 2001-02-27
US60/271,479 2001-02-27

Publications (2)

Publication Number Publication Date
WO2002069316A2 WO2002069316A2 (en) 2002-09-06
WO2002069316A3 true WO2002069316A3 (en) 2003-05-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/005916 WO2002069316A2 (en) 2001-02-27 2002-02-27 System for computationally efficient active control of tonal sound or vibration

Country Status (3)

Country Link
US (1) US7224807B2 (en)
AU (1) AU2002244175A1 (en)
WO (1) WO2002069316A2 (en)

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US7003380B2 (en) * 2001-02-27 2006-02-21 Sikorsky Aircraft Corporation System for computationally efficient adaptation of active control of sound or vibration
FR2855922B1 (en) * 2003-06-06 2005-08-19 Thales Sa METHOD AND DEVICE FOR PROCESSING INFORMATION FROM RESPIRATORY PRIMARY FLIGHT EQUIPMENTS
EP1922859A1 (en) * 2005-08-12 2008-05-21 Gn Netcom A/S A base unit adapted to provide a communications connection as well as a method of providing a communications connection
NZ569819A (en) * 2006-01-25 2010-07-30 Vestas Wind Sys As A wind turbine comprising at least one gearbox and an epicyclic gearbox
JP5092604B2 (en) * 2006-10-30 2012-12-05 日産自動車株式会社 Vibration reduction device
JP5242151B2 (en) * 2007-12-21 2013-07-24 セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー Vibration correction control circuit and imaging apparatus including the same
GB0725108D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
JP5237622B2 (en) * 2007-12-21 2013-07-17 セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー Vibration correction control circuit and imaging apparatus including the same
GB0725111D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
JP2009156946A (en) * 2007-12-25 2009-07-16 Sanyo Electric Co Ltd Vibration prevention control circuit of imaging device
JP2009156945A (en) * 2007-12-25 2009-07-16 Sanyo Electric Co Ltd Vibration prevention control circuit for imaging device
US8262344B2 (en) * 2008-04-02 2012-09-11 Hamilton Sundstrand Corporation Thermal management system for a gas turbine engine
WO2010099521A1 (en) 2009-02-27 2010-09-02 Bell Helicopter Textron Inc. System and method for vibration control in a rotorcraft using an adaptive reference model algorithm
EP2241502B1 (en) * 2009-04-13 2017-03-08 Sikorsky Aircraft Corporation Active vibration suppression via power minimization
CN102355233B (en) * 2011-06-10 2015-04-29 南京大学 Active control algorithm on transformer noise through synthesizing reference signals
US9190071B2 (en) 2012-09-14 2015-11-17 Sikorsky Aircraft Corporation Noise suppression device, system, and method
US9099980B2 (en) 2013-05-06 2015-08-04 Pratt & Whitney Canada Corp Dynamically detecting resonating frequencies of resonating structures
US9883311B2 (en) * 2013-06-28 2018-01-30 Dolby Laboratories Licensing Corporation Rendering of audio objects using discontinuous rendering-matrix updates
US10464689B2 (en) 2016-08-17 2019-11-05 Bell Helicopter Textron Inc. Diagnostic method, system and device for a rotorcraft drive system
US10424134B2 (en) 2016-08-17 2019-09-24 Bell Helicopter Textron Inc. Diagnostic method, system and device for a rotorcraft drive system
US10380810B2 (en) 2016-08-17 2019-08-13 Bell Helicopter Textron Inc. Diagnostic method, system and device for a rotorcraft drive system
US10643405B2 (en) 2016-08-17 2020-05-05 Bell Helicopter Textron Inc. Diagnostic method, system and device for a rotorcraft drive system
US10266278B2 (en) 2016-10-11 2019-04-23 Unison Industries, Llc Starter issue detection
JP2023514647A (en) 2020-02-25 2023-04-06 ボーズ・コーポレーション Narrow band rejection
US11417306B2 (en) 2020-12-31 2022-08-16 Bose Corporation Systems and methods for engine harmonic cancellation

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Also Published As

Publication number Publication date
US20020118844A1 (en) 2002-08-29
US7224807B2 (en) 2007-05-29
AU2002244175A1 (en) 2002-09-12
WO2002069316A2 (en) 2002-09-06

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