CN101147189A - Active countersound system with special arrangement of the secondary actuators for reducing the passage of sound at an open boundary area of two volumes - Google Patents
Active countersound system with special arrangement of the secondary actuators for reducing the passage of sound at an open boundary area of two volumes Download PDFInfo
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- CN101147189A CN101147189A CNA2006800098037A CN200680009803A CN101147189A CN 101147189 A CN101147189 A CN 101147189A CN A2006800098037 A CNA2006800098037 A CN A2006800098037A CN 200680009803 A CN200680009803 A CN 200680009803A CN 101147189 A CN101147189 A CN 101147189A
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- 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
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- 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
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
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- 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
- G10K2210/12—Rooms, e.g. ANC inside a room, office, concert hall or automobile cabin
Abstract
A reference sensor (13) detects a primary sound wave (16) and outputs a reference signal (R). An automatic controller (11) generates an error signal (F) based on the reference signal and a secondary signal (S) produced by secondary actuators (14). Counter sound waves (15) from the secondary actuators are reduced based on the error signal to obtain an optimal sound wave. The secondary actuators are arranged so as to be penetrable by the primary sound wave at the edge of an open depressing surface (21).
Description
Quoting of related application
The application requires in the German patent application No.102005016021.2 of submission on April 7th, 2005 and the provisional patented claim No.60/669 of the U.S. that submits on April 7th, 2005,061 right of priority, and the disclosure of described application is incorporated herein by reference.
Technical field
The present invention relates to a kind of Active Noise Control system (active countersound system), this system is used for the active sound wave that reduces at least one main sound wave of sending from the master driver of launching main sound wave, and the specific arrangements with sub-exciter reduces in the open boundary zone of two volumes or the sound wave transmission of passing this open boundary zone.And, the invention still further relates to a kind of Active Noise Control system and device, a kind ofly be used for the active method that reduces sound wave, and a kind of purposes of active anti-acoustic systems, this purposes is used for active reducing at the sound wave to the open CONTROL VOLUME of small part.
Background technology
Usually, sound wave particularly disturbs sound wave such as noise, can utilize the noise absorption equipment not have the seedbed it is reduced, and perhaps has the seedbed that it is reduced by Active noise control using (ANC).
The following substantially work of known ANC system:
Master driver, for example noise source produces at least one main sound wave, for example sinusoidal sound wave.For active reduce or even eliminate this and disturb main sound wave, preferably must be to use this main sound wave that has same magnitude and frequency but the secondary sound wave of 180 ° of phase shifts or anti-sound wave superpose.For this reason, provide ANC regulator.This regulator is handled with respect to main sound wave reference signal synchronous, that for example obtain by means of reference sensor, and by the error signal of error pick-up such as error microphone record, and calculate frequency thus but the amplitude sub signal different with phase place with reference signal.This sub signal is sent to sub-exciter, loudspeaker for example, and this sub-exciter converts sub signal to an anti-sound wave or several anti-sound waves.Then, the sound wave through superposeing is obtained by error pick-up once more, and proceeds to regulate and control, so that realize minimizing of last resulting sound wave.
Known is, for example, as 20 to 22 September in 2004 in Williamsburg, Virginia city when ACTIVE 04 by Colin H Hansen (Active Noise andVibration Control Group, School of Mechanical Engineering, Universityof Adelaide, SA 5005, Australia, chansen@mecheng.adelaide.edu.au) described in the report of being done " Current and Future Industrial Applications of Active NoiseControl ", eliminate or reduce ducted sound wave by the ANC system, described pipeline just has the semi-open CONTROL VOLUME of passing through the zone of two openings.Yet this is the simple total system with one dimension sonic propagation, in this system, by arrange sub-exciter in pipeline, can realize easily that active sound wave reduces.
And, realize that in the CONTROL VOLUME of sealing it also is known that active sound wave reduces.
According to same in 20 to 22 September in 2004 in Williamsburg, Virginia city, in ACTIVE 04 framework by Jon Gorman, Richard Hinchliffe and Ian Stothers (Ultra Electronics Controls Division, Vitrum Building, St.John ' sInnovation Park, Cowley Road, Cambridge, CB4 0WS, England, jon.Gorman@ultracontrols.aero) report of being done " Active Sound Control onthe Flight Deck of a C130 Hercules ", a kind of ANC system is disclosed, this system is used in the CONTROL VOLUME of sealing, be in the airframe, decay regional area or reduce main sound wave in the regional area.
By A.Jakob, R.Bauers, M.M ser (Institute of Technical Acoustics.Technical University of Berlin, Einsteinufer 25, D-10587 Berlin, Germany is andre.jakob@tu-berlin.de) in 22 to 25 August in 2004 of Prague in Czech Republic, a kind of ANC system that is used for the triplex glass window is disclosed in the report of being done on " The 33rd International Congress and Exposition on NoiseControl Engineering " " An Actively Controlled triple-glazedwindow ".Here, in the CONTROL VOLUME of the sealing in the space between two pane of glass (glass pane) of triplex glass, realized that also the active sound wave of main sound wave reduces.In this was arranged, sub-exciter was arranged in the edge in gap, thereby made the sound wave of sealing CONTROL VOLUME inside reduce.Like this, can reduce to pass the transmission sound that the sealing window enters into the rear volume.
Said system has following shortcoming, promptly only can realize that active sound wave reduces in the sealing CONTROL VOLUME or in the simple geometric CONTROL VOLUME, and wherein, the one dimension sonic propagation is in the inside of described CONTROL VOLUME.
Summary of the invention
Wherein, the effective active sound wave of the main sound wave of the objective of the invention is to be implemented in to small part open CONTROL VOLUME or space, propagating on some directions reduces, wherein, sound wave reduces not occur over just the part, and relates to whole space or The whole control volume.
This purpose can realize by the utilization of Active Noise Control system such as the independent claims 1 described feature of the specific arrangements with sub-exciter, and the specific arrangements of described sub-exciter is used to reduce the transmission sound in the open boundary zone of two volumes; And, purpose of the present invention can be by a kind of Active Noise Control system and device, a kind of a kind of purposes of active method that reduces sound wave and Active Noise Control system that is used for by realizing as the described feature of all the other independent claims, wherein, described purposes is used for active reducing at the sound wave to the open CONTROL VOLUME of small part.
Comprise at least one conditioner unit, at least one error pick-up, at least one reference sensor and one or more sub-exciter according to Active Noise Control of the present invention system.Sub-exciter is designed to launch anti-sound wave.The error pick-up that is coupled to conditioner unit obtains the sound wave of stack, and is under the retrievable situation at this sound wave, and it is sent to conditioner unit as error signal by coupling.The reference sensor that is coupled to conditioner unit obtains main sound wave, and by coupling the corresponding reference signal is sent to conditioner unit, and wherein, described main sound wave has one at least.Be coupled to the conditioner unit process errors signal and the reference signal of sub-exciter, and generate sub signal according to them, this sub signal sends sub-exciter to by coupling, so that depend on error signal, control sub-exciter by sub signal, thereby described sub-exciter produces and reduces the anti-sound wave of error signal, eliminates so that can realize best sound wave.
In this scheme, sub-exciter is arranged to be positioned to the open edge that passes through the zone of small part, so that pass through anti-sound wave with the form of curtain, guaranteeing to be arranged in this active sound wave by the segment space at least after the zone eliminates, describedly comprise the edge and will be passed, and described space is open to small part by main sound wave by the zone.
In addition,, made up the active silencer that has CONTROL VOLUME and have the Active Noise Control system that comprises above-mentioned feature, be used for having the seedbed to reduce the sound wave of the main sound wave of CONTROL VOLUME according to the present invention.
According to method of the present invention, that be used for the sound wave of at least one main sound wave that active elimination sends from the master driver of launching main sound wave, obtain the reference signal of main sound wave by means of reference sensor.In addition, by means of error pick-up, utilize the sound wave of stack to obtain error signal.Error signal and reference signal are sent to conditioner unit by coupling.And the signal that the conditioner unit estimation is transmitted has then produced sub signal.Sub signal is sent to sub-exciter by coupling.Sub-exciter is arranged in the edge that passes through the zone at the opening of main sound wave.And, by means of sub-exciter, produce secondary sound wave according to the sub signal that transmits, described secondary sound wave with the form of curtain is superimposed upon open by on the zone, feasible propagation is reduced at least by open main sound wave by the zone and/or is eliminated, wherein, described step repeats in being designed to control the Active Noise Control system of circuit and/or carries out continuously.
In addition, according to the present invention, provide the Active Noise Control system, be used for having the seedbed to be decreased to the purposes of the sound wave of the open CONTROL VOLUME of small part.
Basic thought of the present invention comprises the assembling of the Active Noise Control system with sub-exciter, wherein, described sub-exciter is arranged, make its arrange marginalisation, promptly along the edge placement of passing through the zone at the opening of main sound wave, and it is open by being superimposed on secondary sound wave or the anti-sound wave on the main sound wave in the zone that it is created in, thereby reduce or eliminate main sound wave.Like this, can make up a kind of " sound curtain (acoustic curtain) ",, can reduce all main sound waves after passing through the zone, on its direction of propagation at least by this curtain.
Generally speaking, main sound wave is a noise waves.Therefore, secondary sound wave or anti-sound wave are corresponding (through phase shift) noise waves.Accordingly, the sub-exciter that is used to produce these noise waves is a loudspeaker.
Open by the zone be sealing edge institute around the zone, main sound wave is by this arrival space, zone or CONTROL VOLUME.
Described edge can have the geometric configuration of any sealing.Yet especially, described edge can be arranged in the plane.For example, described edge can be designed as the circumference of simple geometric shape, and described simple geometric shape comprises triangle, circle, avette, oval, quadrilateral, polygon, square, rectangle, trapezoidal, rhombus etc.
Described edge also can be designed as so-called sealing, so that can realize the sealing to the master driver that is designed to noise source.Like this, the entire circumference after this is sealed will realize that main sound wave reduces.
It is equidistant that sub-exciter preferably is arranged to along the edge by the zone.Like this, can realize best main sound wave elimination.Make to design to have the more more simple computation model of simple algorithm along equidistantly distributing of described edge, be used for regulating and control Active Noise Control system, thereby guarantee that more effective main sound wave reduces.
The quantity that is used for the sub-exciter that effective main sound wave reduces depends on quantity of parameters, and described parameter comprises the geometric configuration in the space that will shield; Perhaps depend on degree that CONTROL VOLUME, the spectrum composition by the geometric configuration in zone, main sound wave, main magnitude of acoustic waves and/or frequency, the bandwidth of main sound wave, needed sound wave reduce or the like.
Term " space that will shield " refers to, and space or the CONTROL VOLUME that active (master) sound wave reduces wherein will take place.
Generally speaking, anti-sound wave curtain is intensive more good more, that is, wherein, conditioner unit is fast more accurate more, and then main sound wave reduces many more.This means in order to realize that effective main sound wave reduces, should guarantee the quality and/or the quantity of sub-exciter, and the quality of the correspondence of conditioner unit, perhaps generally speaking, the quality of the correspondence of adjusting.
Under the situation of arrowband master's sound wave, it is essential having only the arrowband sub-exciter.For example, have at main sound wave under the situation of big amplitude, more powerful sub-exciter or accordingly the sub-exciter of bigger quantity be essential.Yet, depend on parameter combinations, owing to there are many possible application, can not state the option of all various designs.
The situation of sub-exciter type is also similar.Here, in order to reduce main sound wave effectively, the type of sub-exciter also depends on a lot of parameters, degree that described parameter comprises CONTROL VOLUME or geometric configuration, the spectrum composition by the geometric configuration in zone, main sound wave, main magnitude of acoustic waves and/or the frequency in the space that will shield, the bandwidth of main sound wave, needed sound wave reduce or the like.
With the example class of above main sound wave with big amplitude seemingly, may need the sub-exciter of bigger quantity, perhaps need to have the sub-exciter of the same quantity that can produce the device that has anti-sound wave by a larger margin equally.If the frequency of main sound wave in low-frequency range, then can only need to produce the sub-exciter of low-frequency range.
And, based on parameter correlativity each other, in this document, can not list all combinations and/or embodiment.Yet, especially, some combinations, for example a large amount of high-quality sub-exciters and high-quality fast adjusting cause effective main sound wave to reduce, and wherein, the design size of design size, especially sub-exciter also should be always among being considered.
In addition, the position of error pick-up may influence the validity of Active Noise Control system.
Type as sub-exciter is the same with quantity, the quantity of error pick-up and/or type also depend on each parameter, degree of eliminating such as the geometric configuration in the space that will shield, CONTROL VOLUME, by geometric configuration, the spectrum composition of main sound wave, main magnitude of acoustic waves and/or the frequency in zone, needed sound wave or the like.
In addition, reference sensor and error pick-up can be designed to be integrated in the sensor.Like this, can design so-called feedforward system and feedback system.Therefore, except obtaining the reference signal by means of reference sensor, this reference signal also can be from combined and be integrated in an error pick-up and a reference sensor the sensor and obtain.
Purposes according to Active Noise Control of the present invention system is many-sided, and the particular edge that this Active Noise Control system has sub-exciter arranges that the seedbed reduces at the sound wave to the open CONTROL VOLUME of small part.For example, the Active Noise Control system can be arranged in the inlet region in noise attentuation space, so that realize that effective noise reduces.Especially, utilize this system, can the master driver that be designed to noise source be sealed effectively.Similarly, for example in the hall, workshop, some zone (wherein, for example owing to the requirement of rules, it is enforceable that noise reduces) can be protected effectively, avoids The noise, and need not take the noise safeguard measure at hall, whole workshop.
This causes a large amount of application choice of active silencer, and described active silencer has to the open CONTROL VOLUME of small part, and what have the opening that comprises the edge pass through regionally, and has according to Active Noise Control of the present invention system.
For example, sub-exciter is arranged along the plane rectangle, utilizes some this devices, and each zone can be with the similar zone that is designed to noise attentuation of mode of sound insulation district or barrier.Equally, can expect be on the airport, along the embodiment of highway or railway line, building ground or the like.
Purposes according to device of the present invention has the following advantages, and promptly described device does not visually cover the open zone of passing through, and these are different with the situation of for example not having source noise protection screen barrier.Purposes as noise protection barrier or noise protection barrier element can also provide following advantage, has promptly in fact only changed the sense of hearing.
Preferably, layout sub-exciter or open edge by the zone is designed to the simple geometric shape.And in order to produce large-area noise protection, some this devices can be arranged together in modular mode thus.
When comparing with the ANC system that relates to the triplex glass window that is as above stated, the system that is proposed among the present invention is effective equally under the situation that window is opened.In this is used, become clear especially as the purposes or the function of " sound curtain ".
Description of drawings
One exemplary embodiment of the present invention illustrate in the drawings, and give more detailed explanation below.
The figure shows schematic diagram according to Active Noise Control of the present invention system.
Diagram among this figure is a diagrammatic, and disproportionate.
Embodiment
Below, with reference to the accompanying drawings, Active Noise Control system and device 30 is according to an embodiment of the invention described.
Active Noise Control system and device 30 comprises active sound-attenuating system 10 and CONTROL VOLUME 20.Active Noise Control system 10 comprises conditioner unit 11, two error pick-ups 12, reference sensor 13 and four sub-exciters 14.Sub-exciter 14 designed to be able to the loudspeaker that produces anti-sound wave 15.These anti-sound waves 15 are sinusoidal sound waves, and obtain by two error pick-ups 12, and wherein, described two error pick-ups 12 are designed to microphone by correspondence in the present embodiment.Error pick-up 12 is coupled to conditioner unit 11 by circuit.By this circuit, the error signal F that is obtained by error pick-up 12 is sent to conditioner unit 11.The main sound wave 16 that is produced by the master driver (not shown) obtains conduct with reference to signal R by reference sensor 13.In this embodiment, main sound wave 16 illustrates with the shape of sinusoidal noise ripple or sound wave.Accordingly, in this embodiment, reference sensor 13 is microphones.This reference sensor also is coupled to conditioner unit 11 by the coupling that is designed to circuit.By this circuit, reference signal R is sent to conditioner unit 11.These two of conditioner unit 11 estimations send signal R, F, and calculate sub signal S according to them.Conditioner unit 11 is coupled to sub-exciter 14 by circuit.By this coupling, the sub signal S that is produced by conditioner unit is sent to sub-exciter 14 from conditioner unit 11.Accordingly, sub-exciter 14 converts sub signal S to anti-sound wave 15, and wherein, main sound wave 16 is superimposed upon on this anti-sound wave 15.The sound wave of this stack or the sound wave of these stacks are obtained by error pick-up 12 once more, and carry out continuously and regulate or re-adjustments.
Open by regional 21 and center on by the edge.This edge is rectangular shape in the embodiment shown, and sub-exciter 14 is along this edge placement.In this arrangement, sub-exciter 14 is separate, being equidistant.Forms " sound curtain " by sub-exciter 14 along open anti-sound waves 15 by zone 21 emissions, make all by this opening by the regional 21 main sound waves 16 that enter CONTROL VOLUME 20 inside these anti-sound waves 15 that all can superpose.Stack has produced the main sound wave 16 ' of decay, wherein, the degree of decay and noise reduce or main sound wave reduce equate.
In addition, should be pointed out that " comprising " do not get rid of other element or step, and " one " or " one " does not get rid of majority.And, should be pointed out that with reference to described feature of embodiment among the above embodiment or step also can be used in combination with further feature or the step of above-mentioned other embodiment.Reference number in the claim should not be interpreted as restriction.
Reference listing
10 Active Noise Control systems
11 conditioner unit
12 error pick-ups
13 reference sensors
14 sub-exciters
15 anti-sound waves
16 main sound waves
16 ' stack/decay main sound wave
20 CONTROL VOLUME
21 is open by the zone
The F error signal
The R reference signal
The S sub signal
Claims (according to the 19th modification of treaty)
1. an Active Noise Control system (10) is used for the active sound wave that reduces at least one main sound wave of sending from the master driver of launching main sound wave (16),
Has at least one conditioner unit (11);
Has at least one error pick-up (12);
Has at least one reference sensor (13);
Have several sub-exciters (14);
Wherein, described sub-exciter (14) is designed to launch anti-sound wave (15);
Wherein, the described error pick-up (12) that is coupled to described conditioner unit (11) obtains stack sound wave (15,16,16 '), and described stack sound wave (15,16,16 ') is sent to described conditioner unit (11) as error signal (F) by described coupling;
Wherein, the described reference sensor (13) that is coupled to described regulon (11) obtains the described main sound wave (16) with at least one, and described main sound wave (16) is sent to described conditioner unit (11) by described coupling;
Wherein, described reference sensor (13) and described error pick-up are designed to be integrated in the sensor;
Wherein, the described conditioner unit (11) that is coupled to described sub-exciter (15) is handled described error signal (F) and described reference signal (R), and produce sub signal (S), described sub signal (S) is sent to described sub-exciter (14) by described coupling, so that depend on described error signal (F), control described sub-exciter (14) by means of described sub signal (S), make described sub-exciter (14) produce the anti-sound wave (15) that reduces described error signal (F), thereby realize optimum sound wave elimination;
Wherein, described sub-exciter (14) is arranged to be positioned to the open edge that passes through the zone of small part, so that pass through anti-sound wave (15) with the form of curtain, guarantee be arranged in the active sound wave elimination of described opening by zone (21) segment space at least afterwards, describedly comprise the edge and will be passed, and described space is open to small part by described main sound wave (16) by the zone.
2. Active Noise Control system as claimed in claim 1 (10), wherein, described sub-exciter (14) along described opening by the zone (21) described edge be equidistant.
3. Active Noise Control system as claimed in claim 1 or 2 (10), wherein, the quantity of sub-exciter (14) depends on that parameter selects, the degree that the spectrum composition of geometric configuration by zone (21) of the geometric configuration in this parameter such as the described space that will shield, described opening, described main sound wave (16), the amplitude of described main sound wave (16) and/or frequency, needed sound wave are eliminated.
4. as any one described Active Noise Control system (10) in the claim 1 to 3, wherein, the type of described sub-exciter (14) depends on that parameter selects, the degree that the spectrum composition of geometric configuration by zone (21) of the geometric configuration in this parameter such as the described space that will shield, described opening, described main sound wave (16), the amplitude of described main sound wave (16) and/or frequency, needed sound wave are eliminated.
5. as any one described Active Noise Control system (10) in the claim 1 to 4, wherein, some error pick-ups (12) are in the appropriate location, wherein, the quantity of described error pick-up (12) and/or location depend on that parameter selects, the degree that the spectrum composition of geometric configuration by zone (21) of the geometric configuration in this parameter such as the described space that will shield, described opening, described main sound wave (16), the amplitude of described main sound wave (16) and/or frequency, needed sound wave are eliminated.
6. method that is used for the sound wave of at least one main sound wave that active elimination sends from the master driver of launching main sound wave,
In the described method,
By means of reference sensor (13), obtain the reference signal (R) of main sound wave (16);
By means of error pick-up (12), obtain the error signal (F) of stack sound wave (15,16,16 ');
Wherein, described reference sensor (13) and described error pick-up are designed to be integrated in the sensor;
By means of coupling, described error signal (F) and described reference signal (R) send to conditioner unit (11);
(R F), has then produced sub signal (S) to the signal that described conditioner unit (11) estimation is sent;
Described sub signal (S) sends to sub-exciter (14) by means of coupling;
Described sub-exciter (14) is arranged at the opening of described main sound wave (16) and passes through on the edge in zone (21); And
Described sub-exciter (14) produces anti-sound wave (15) according to the sub signal that is sent (S), described anti-sound wave (15) is superimposed upon described opening by on the zone (21) with the form of curtain, make and propagate by the described main sound wave (16 of described opening by the zone, 16 ') reduce or eliminate, wherein, in controlling, repeat described step by the road
7. a sound-attenuating system device (30) comprises to the open CONTROL VOLUME (20) of small part, and this CONTROL VOLUME (20) has the opening that comprises the edge and passes through zone (21); Comprise as any one the described Active Noise Control system (10) in the claim 1 to 6 sound wave in the main sound wave (16) that is used for having the seedbed to reduce described CONTROL VOLUME (20).
8. the purposes of Active Noise Control system (10) is used to have the seedbed to reduce at the sound wave to the open CONTROL VOLUME (20) of small part.
Claims (9)
1. an Active Noise Control system (10) is used for the active sound wave that reduces at least one main sound wave of sending from the master driver of launching main sound wave (16),
Has at least one conditioner unit (11);
Has at least one error pick-up (12);
Has at least one reference sensor (13);
Have some sub-exciters (14);
Wherein, described sub-exciter (14) is designed to launch anti-sound wave (15);
Wherein, the described error pick-up (12) that is coupled to described conditioner unit (11) obtains stack sound wave (15,16,16 '), and described stack sound wave (15,16,16 ') is sent to described conditioner unit (11) as error signal (F) by described coupling;
Wherein, the described reference sensor (13) that is coupled to described regulon (11) obtains the described main sound wave (16) with at least one, and described main sound wave (16) is sent to described conditioner unit (11) by described coupling;
Wherein, the described conditioner unit (11) that is coupled to described sub-exciter (15) is handled described error signal (F) and described reference signal (R), and produce sub signal (S), described sub signal (S) is sent to described sub-exciter (14) by described coupling, so that depend on described error signal (F), control described sub-exciter (14) by means of described sub signal (S), make described sub-exciter (14) produce the anti-sound wave (15) that reduces described error signal (F), thereby realize optimum sound wave elimination;
Wherein, described sub-exciter (14) is arranged to be positioned to the open edge that passes through the zone of small part, so that pass through anti-sound wave (15) with the form of curtain, guarantee be arranged in the active sound wave elimination of described opening by zone (21) segment space at least afterwards, describedly comprise the edge and will be passed, and described space is open to small part by described main sound wave (16) by the zone.
2. Active Noise Control system as claimed in claim 1 (10), wherein, described sub-exciter (14) along described opening by the zone (21) described edge be equidistant.
3. Active Noise Control system as claimed in claim 1 or 2 (10), wherein, the quantity of sub-exciter (14) depends on that parameter selects, the degree that the spectrum composition of geometric configuration by zone (21) of the geometric configuration in this parameter such as the described space that will shield, described opening, described main sound wave (16), the amplitude of described main sound wave (16) and/or frequency, needed sound wave are eliminated.
4. as any one described Active Noise Control system (10) in the claim 1 to 3, wherein, the type of described sub-exciter (14) depends on that parameter selects, the degree that the spectrum composition of geometric configuration by zone (21) of the geometric configuration in this parameter such as the described space that will shield, described opening, described main sound wave (16), the amplitude of described main sound wave (16) and/or frequency, needed sound wave are eliminated.
5. as any one described Active Noise Control system (10) in the claim 1 to 4, wherein, some error pick-ups (12) are in the appropriate location, wherein, the quantity of described error pick-up (12) and/or location depend on that parameter selects, the degree that the spectrum composition of geometric configuration by zone (21) of the geometric configuration in this parameter such as the described space that will shield, described opening, described main sound wave (16), the amplitude of described main sound wave (16) and/or frequency, needed sound wave are eliminated.
6. as any one described Active Noise Control system (10) in the claim 1 to 5, wherein, described reference sensor (13) and described error pick-up are designed to be integrated in the sensor.
7. method that is used for the sound wave of at least one main sound wave that active elimination sends from the master driver of launching main sound wave,
In the described method,
By means of reference sensor (13), obtain the reference signal (R) of main sound wave (16);
By means of error pick-up (12), obtain the error signal (F) of stack sound wave (15,16,16 ');
By means of coupling, described error signal (F) and described reference signal (R) are sent to conditioner unit (11);
(R F), has then produced sub signal (S) to the signal that described conditioner unit (11) estimation is sent;
Described sub signal (S) sends to sub-exciter (14) by means of coupling;
Described sub-exciter (14) is arranged at the opening of described main sound wave (16) and passes through on the edge in zone (21); And
Described sub-exciter (14) produces anti-sound wave (15) according to the sub signal that is sent (S), described anti-sound wave (15) is superimposed upon described opening by on the zone (21) with the form of curtain, make and propagate by the described main sound wave (16 of described opening by the zone, 16 ') reduce or eliminate, wherein, in control circuit, repeat described step.
8. a sound-attenuating system device (30) comprises to the open CONTROL VOLUME (20) of small part, and this CONTROL VOLUME (20) has the opening that comprises the edge and passes through zone (21); Comprise as any one the described Active Noise Control system (10) in the claim 1 to 6, be used for the sound wave in the active main sound wave (16) that reduces described CONTROL VOLUME (20).
9. the purposes of Active Noise Control system (10) is used for active reducing at the sound wave to the open control volume (20) of small part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005016021.2 | 2005-04-07 | ||
| US60/669,061 | 2005-04-07 | ||
| DE102005016021A DE102005016021A1 (en) | 2005-04-07 | 2005-04-07 | Active counter sound system has secondary actuators arranged at edge of open depressing surface to be penetrable by primary sound wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101147189A true CN101147189A (en) | 2008-03-19 |
Family
ID=37026258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800098037A Pending CN101147189A (en) | 2005-04-07 | 2006-04-05 | Active countersound system with special arrangement of the secondary actuators for reducing the passage of sound at an open boundary area of two volumes |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20080196967A1 (en) |
| EP (1) | EP1866908A2 (en) |
| JP (1) | JP2008537166A (en) |
| CN (1) | CN101147189A (en) |
| CA (1) | CA2597636A1 (en) |
| DE (1) | DE102005016021A1 (en) |
| RU (1) | RU2411592C2 (en) |
| WO (1) | WO2006105948A2 (en) |
Cited By (4)
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|---|---|---|---|---|
| CN101902680A (en) * | 2010-07-05 | 2010-12-01 | 南京大学 | Design method of virtual coupled space based on active control |
| CN101521008B (en) * | 2009-04-02 | 2011-08-03 | 南京大学 | Active sound-absorption taper and manufacture method thereof |
| CN102184730A (en) * | 2011-02-17 | 2011-09-14 | 南京大学 | Feed-forward active noise barrier |
| CN108518258A (en) * | 2018-02-28 | 2018-09-11 | 成英 | The standing wave tube of vehicle silencing apparatus acquires noise elimination resonator system |
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| DE102007012611A1 (en) | 2007-03-13 | 2009-01-08 | Airbus Deutschland Gmbh | Method for active soundproofing in closed inner chamber, involves identifying secondary modulator or transmission path of interfering signal and arranging secondary modulator |
| US8331577B2 (en) * | 2008-07-03 | 2012-12-11 | Hewlett-Packard Development Company, L.P. | Electronic device having active noise control with an external sensor |
| US8933576B2 (en) | 2012-05-02 | 2015-01-13 | United Technologies Corporation | Hybrid friction wheel gearbox drivetrain for wind turbine applications |
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| US10121464B2 (en) * | 2014-12-08 | 2018-11-06 | Ford Global Technologies, Llc | Subband algorithm with threshold for robust broadband active noise control system |
| US9779720B2 (en) * | 2015-04-08 | 2017-10-03 | Ford Global Technologies, Llc | Control system having active noise and vibration centralized control through digital network |
| EP3185240A1 (en) | 2015-12-22 | 2017-06-28 | Helmut-Schmidt-Universität | System and method for actively reducing noise passing through an opening in a sound barrier |
| RU182230U1 (en) * | 2018-04-12 | 2018-08-08 | Александр Павлович Тюрин | NOISE PROTECTION DEVICE |
| AU2019477919B2 (en) | 2019-12-12 | 2023-09-14 | Shenzhen Shokz Co., Ltd. | Systems and methods for noise control |
| DE102020100959A1 (en) | 2020-01-16 | 2021-07-22 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Active noise damping system and method for active damping of background noise |
| CN111339651B (en) * | 2020-02-22 | 2022-06-14 | 西北工业大学 | Secondary sound source layout optimization method for decoupling error sensor layout information |
| CN114543192B (en) * | 2022-02-24 | 2023-11-14 | 青岛海信日立空调系统有限公司 | Air conditioner outdoor unit |
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- 2005-04-07 DE DE102005016021A patent/DE102005016021A1/en not_active Ceased
-
2006
- 2006-04-05 EP EP06724041A patent/EP1866908A2/en not_active Withdrawn
- 2006-04-05 CA CA002597636A patent/CA2597636A1/en not_active Abandoned
- 2006-04-05 US US11/908,383 patent/US20080196967A1/en not_active Abandoned
- 2006-04-05 WO PCT/EP2006/003092 patent/WO2006105948A2/en active Application Filing
- 2006-04-05 RU RU2007139146/28A patent/RU2411592C2/en not_active IP Right Cessation
- 2006-04-05 JP JP2008504679A patent/JP2008537166A/en active Pending
- 2006-04-05 CN CNA2006800098037A patent/CN101147189A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521008B (en) * | 2009-04-02 | 2011-08-03 | 南京大学 | Active sound-absorption taper and manufacture method thereof |
| CN101902680A (en) * | 2010-07-05 | 2010-12-01 | 南京大学 | Design method of virtual coupled space based on active control |
| CN102184730A (en) * | 2011-02-17 | 2011-09-14 | 南京大学 | Feed-forward active noise barrier |
| CN102184730B (en) * | 2011-02-17 | 2012-08-15 | 南京大学 | Feed-forward active noise barrier |
| CN108518258A (en) * | 2018-02-28 | 2018-09-11 | 成英 | The standing wave tube of vehicle silencing apparatus acquires noise elimination resonator system |
| CN108518258B (en) * | 2018-02-28 | 2020-09-08 | 付万贤 | Standing wave tube collecting, silencing and resonating system of vehicle silencing device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006105948A3 (en) | 2007-05-24 |
| CA2597636A1 (en) | 2006-10-12 |
| WO2006105948B1 (en) | 2007-07-19 |
| US20080196967A1 (en) | 2008-08-21 |
| EP1866908A2 (en) | 2007-12-19 |
| RU2411592C2 (en) | 2011-02-10 |
| WO2006105948A2 (en) | 2006-10-12 |
| RU2007139146A (en) | 2009-05-20 |
| DE102005016021A1 (en) | 2006-10-12 |
| JP2008537166A (en) | 2008-09-11 |
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