CN103079152A - Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method - Google Patents
Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method Download PDFInfo
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- CN103079152A CN103079152A CN2013100075573A CN201310007557A CN103079152A CN 103079152 A CN103079152 A CN 103079152A CN 2013100075573 A CN2013100075573 A CN 2013100075573A CN 201310007557 A CN201310007557 A CN 201310007557A CN 103079152 A CN103079152 A CN 103079152A
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Abstract
The invention discloses a loudspeaker centering support sheet and paper basin folding ring compliance test instrument, which comprises a measurement support frame, a fixing disc (6), a center clamp (4), a force sensor (10), a laser distance measuring sensor (2), a slide rail (9) and a data collection and analysis and processor (7), wherein the outer edge of a tested component (5) is clamped by the fixing disc (6) and is vertically fixed on the measuring support frame, the edge of the center position is clamped by the clamp (4), the left side of the measuring support frame is provided with a laser distance measuring sensor (2), the laser beam is aligned with the clamp (4), the right side of the measuring support frame is provided with the slide rail (9), the force sensor (10) is arranged on the slide rail (9) and can forwards and backwards slide freely, the front side of the measuring support frame is connected with a copper rod (1), and output signals of the force sensor (10) and the laser distance measuring sensor (2) are connected with the collection and analysis and processor (7) through data wires (3 and 8). The invention also discloses a compliance factor calculating method based on the test instrument. The instrument and the method provided by the invention can be used for conveniently, fast and precisely measuring the rigidity change condition caused by rigidity and deformation of a loudspeaker vibration component.
Description
Technical field
The present invention relates to a kind of compliance tester, specifically the compliance tester of a kind of speaker centring support sheet and cone ring
AndCompliance coefficient calculations method.
Background technology
Centring disk and cone ring are the basic building blocks of loud speaker, generally be to be made by the plastic cement material of the special shape of fabric, rubber or the injection molded of impregnation, their function mainly is the elastic force when guaranteeing the tram of voice coil loudspeaker voice coil in magnetic gap and providing vibrational system reciprocating.The physical quantity of this elastic force is coefficient of elasticity
K(conventional unit N/mm).In the loud speaker manufacturing, using more is coefficient of elasticity
KInverse
C, be called the compliance coefficient or referred to as compliance (conventional unit is mm/N).Compliance is the important physical parameter of loud speaker quality, and it has determined the resonance frequency of loud speaker
f 0With the lower limit of LF-response, the efficient of loud speaker and the size of distortion have also been determined to a great extent.But owing to measure difficulty, loud speaker manufacturer can't provide the accurate data of centring disk and cone ring compliance usually.
The RS-438 of Electronic Industries Association (EIA) standard is advised the displacement with load (50g or 100g) measurement unit under test of fixing, and indirectly understands its compliance.The 19-1992 of Audio Engineering Society (AES) standard, the resonance frequency that then proposes to survey first unit under test passes through again
Understand compliance.Front a kind of method is surveyed displacement with a fixing power, and the elastic force and the deformation that are based on the hypothesis unit under test are fully linear; The second is surveyed the method for compliance because the factor that involves is too many indirectly with surveying resonance frequency, and accuracy is greatly affected.
More existing companies have released the compliance tester, are displacement by unit under test being applied the amount that a certain fixing active force measures its deformation, can measure and calculate compliance.But this kind tester can only be measured power, displacement and compliance on direction of unit under test at every turn, when in the other direction surveying compliance, and clamping unit under test again.Because clamping has a significant impact the result, the result on the both direction is invalid in symmetric research.And the self gravitation of unit under test will exert an influence to measurement result in this tester.
Summary of the invention
According to Hooke's law, elastomeric objects in elastic limit, elastic force
FWith displacement
xSize is directly proportional, and expression formula can be write as
F=
KxBut centring disk and cone ring that loud speaker uses are made by nonmetallic composite mostly, there is certain elasticity that suitable plasticity is arranged again, the object that belongs to a kind of non-linear shape-changing material, owing to the impact of geometrical non-linearity, the rigidity size of speaker centring support sheet and cone ring changes along with the distortion size simultaneously.
The technical problem to be solved in the present invention is: measure easily, fast and accurately the rigidity of loudspeaker vibration parts and the variation in rigidity situation that distortion causes.
The present invention solve the technical scheme that adopts of technical problem be:
Speaker centring support sheet provided by the invention and cone ring compliance tester comprise and measure support, fixed disk, anchor clamps, power transducer, laser range sensor, slide rail and data collection and analysis processor; In the middle of measuring support fixed disk is installed, the external margin of unit under test (centring disk or cone) is clamped by fixed disk and vertically is fixed on and measures on the support, the edge, center of unit under test is by clamp clamps, and anchor clamps and unit under test are in same vertical plane; The left side of measuring support is equipped with laser range sensor, laser beam line-up jig center; The right side of measuring support is equipped with slide rail, and power transducer front side is connected with copper rod and this copper rod is vertical with anchor clamps (also being the unit under test center), the power installation of sensors on slide rail also front and back be free to slide.The power transducer is connected output signal and is connected with the data collection and analysis processor by data wire with laser range sensor, the function of this data collection and analysis processor is data acquisition, processing, preservation and demonstration.
Fixed disk, anchor clamps, unit under test are in same vertical plane.The anchor clamps center of clamping unit under test links to each other with copper rod one end.
The axial level of described unit under test and with power sensor movement track zero deflection.During measurement, apply a power that slowly increases in power transducer rear end, the power transducer is mobile at slide rail, drives the unit under test distortion, the power transducer can be read the voltage signal of representative power, and laser range sensor can be read the voltage signal that represents the position at the other end of unit under test simultaneously.
The output signal of power transducer and laser range sensor arrives the data collection and analysis processor by the data wire synchronous driving, by its data acquisition, processing, preservation and demonstration.The function of data collection and analysis processor is: data sampling and processing, preservation and demonstration.
Advantage of the present invention is: can measure quickly and easily the compliance of centring disk and cone ring with the variation of distortion, and measure simultaneously the compliance characteristic of unit under test forward and backward distortion; Also eliminated the impact of unit under test own wt on measurement result, certainty of measurement is higher.
Description of drawings
Fig. 1 is the structural representation of speaker centring support sheet and cone ring compliance tester among the present invention.
Fig. 2 is the method flow diagram of speaker centring support sheet and cone ring compliance tester among the present invention.
Shown in the figure: 1, copper rod, 2, laser range sensor, 3, data wire, 4, anchor clamps, 5, unit under test, 6, fixed disk, 7, the data collection and analysis processor, 8, data wire, 9, slide rail, 10, the power transducer, 11, measure support.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the present invention includes measurement support (11), fixed disk (6), anchor clamps (4), power transducer (10), laser range sensor (2), slide rail (9) and data collection and analysis processor (7); In the middle of measuring support (11) fixed disk (6) is installed, the external margin of unit under test (centring disk or cone) (5) is clamped and vertically is fixed on by fixed disk (6) and measures on the support (11), the edge, center of unit under test (5) is clamped by anchor clamps (4), and anchor clamps (4) are in same vertical plane with unit under test (5); The left side of measuring support (11) is equipped with laser range sensor (2), laser beam line-up jig (4) center; The right side of measuring support (11) is equipped with slide rail (9), power transducer (10) front side is connected with copper rod (1) and this copper rod (1) is vertical with anchor clamps (5) (also being the unit under test center), and power transducer (10) is installed in the upper also front and back of slide rail (9) and is free to slide.Power transducer (10) is connected 2 with laser range sensor) output signal be connected with data collection and analysis processor (7) by data wire (8), data wire (3), the function of this processor (7) is data acquisition, processing, preservation and demonstration.
Fixed disk (9), anchor clamps (4), unit under test (5) are in same vertical plane.Anchor clamps (4) center of clamping unit under test links to each other with copper rod (1) one end.
Mounting means of the present invention is: first power transducer (10) is put on the measuring system slide rail, unit under test (5), anchor clamps (4) and copper rod (1) are installed again, copper rod (1) is linked to each other with power transducer (10), simultaneously unit under test (5) is installed on the fixed disk.Guarantee unit under test (5) axially level and with power transducer (10) tracks zero deflection.
Method of measurement of the present invention as shown in Figure 1.Apply a power that slowly increases in power transducer (10) rear end, power transducer (10) is upper slowly mobile at slide rail (9), drive copper rod (1), anchor clamps (4) and the distortion of unit under test (5) center, the voltage signal that power transducer (10) is read is the stressed time series of unit under test (5) center distortion, and sample rate is 500 times/second.The voltage signal that while laser range sensor (2) is read at the other end of unit under test is the time series of the position at unit under test (5) center, and sample rate is 500 times/second.When the position at unit under test (5) center increased, power transducer (10) was stressed for just, shows as pulling force; When the position at unit under test (5) center reduced, power transducer (10) was stressed for negative, shows as pressure.
Data Post.Power transducer (10) and laser range sensor (2) all arrive data collection and analysis processor (7) with the voltage signal synchronous driving, finish data sampling and processing, demonstration and the saving result of power and position.
As shown in Figure 2, it at first is the data acquisition of finishing force signal and position signalling by data collection and analysis processor (7), then zoom in or out the signal that collects according to the multiple that concerns between voltage signal and the physical quantity actual numerical value, obtain the seasonal effect in time series synchrodata of power and position.
Match power
FWith the position
xRelation curve be that 5 order polynomials are:
Obtain stiffness factor
KAnd displacement
X(
X=
x-
A 0) close and to be:
In the following formula,
A 0,
A 1,
A 2,
A 3,
A 4With
A 5It is the coefficient of fitting function.
At last for showing and saving result.
Claims (4)
1. a speaker centring support sheet and cone ring compliance tester comprise the measurement support, it is characterized in that this tester also comprises fixed disk, anchor clamps, power transducer, laser range sensor, slide rail and data collection and analysis processor; In the middle of measuring support fixed disk is installed, the external margin of unit under test is clamped by fixed disk and vertically is fixed on and measures on the support, and the edge, center of unit under test is by clamp clamps, and anchor clamps and unit under test are in same vertical plane; The left side of measuring support is equipped with laser range sensor; The right side of measuring support is equipped with slide rail, and power transducer front side is connected with copper rod and this copper rod and clip vertical, the power installation of sensors on slide rail and before and after be free to slide; The power transducer is connected output signal and is connected with the data collection and analysis processor by data wire with laser range sensor, the function of this data collection and analysis processor is data acquisition, processing, preservation and demonstration.
2. speaker centring support sheet according to claim 1 and cone ring compliance tester is characterized in that described fixed disk, anchor clamps, unit under test are in same vertical plane.
3. speaker centring support sheet according to claim 1 and cone ring compliance tester is characterized in that described anchor clamps center of clamping unit under test links to each other with copper rod one end.
4. compliance coefficient calculations method for speaker centring support sheet and cone ring compliance tester according to claim 1, it is characterized in that it at first being the data acquisition of finishing force signal and position signalling by the data collection and analysis processor, obtain power after the processing
FAnd position
xData, and calculate the compliance coefficient according to following formula
C:
Obtain stiffness factor
KAnd displacement
X(
X=
x-
A 0) close and to be:
In the following formula,
A 0,
A 1,
A 2,
A 3,
A 4With
A 5It is the coefficient of fitting function.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007557.3A CN103079152B (en) | 2013-01-09 | 2013-01-09 | Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method |
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|---|---|---|---|
| CN201310007557.3A CN103079152B (en) | 2013-01-09 | 2013-01-09 | Loudspeaker centering support sheet and paper basin folding ring compliance test instrument and compliance factor calculating method |
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| CN103079152B CN103079152B (en) | 2015-06-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310052A (en) * | 2013-06-09 | 2013-09-18 | 嘉善恩益迪电声技术服务有限公司 | Numerical simulation analysis method for carrying out numerical simulation analysis on nonlinear characteristic of stiffness coefficient of centering disk of loudspeaker |
| CN105163260A (en) * | 2015-07-09 | 2015-12-16 | 江苏米笛声学科技有限公司 | Loudspeaker diaphragm parameter detection method |
| CN105263095A (en) * | 2015-10-15 | 2016-01-20 | 浙江中科电声研发中心 | Measuring system for loudspeaker component stiffness coefficient and calculating method thereof |
| CN111698633A (en) * | 2020-06-29 | 2020-09-22 | 时东阳 | Method for measuring TS parameters of loudspeaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6735323B1 (en) * | 2003-01-30 | 2004-05-11 | Sun Technique Electric Co., Ltd. | Speaker |
| CN101212839A (en) * | 2007-12-25 | 2008-07-02 | 宁波东威电子有限公司 | Speaker spider and vibrating membrane flexibility tester |
| CN203057522U (en) * | 2013-01-09 | 2013-07-10 | 嘉善恩益迪电声技术服务有限公司 | Centering supporting sheet and paper cone fold ring compliance tester of loudspeaker |
-
2013
- 2013-01-09 CN CN201310007557.3A patent/CN103079152B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6735323B1 (en) * | 2003-01-30 | 2004-05-11 | Sun Technique Electric Co., Ltd. | Speaker |
| CN101212839A (en) * | 2007-12-25 | 2008-07-02 | 宁波东威电子有限公司 | Speaker spider and vibrating membrane flexibility tester |
| CN203057522U (en) * | 2013-01-09 | 2013-07-10 | 嘉善恩益迪电声技术服务有限公司 | Centering supporting sheet and paper cone fold ring compliance tester of loudspeaker |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310052A (en) * | 2013-06-09 | 2013-09-18 | 嘉善恩益迪电声技术服务有限公司 | Numerical simulation analysis method for carrying out numerical simulation analysis on nonlinear characteristic of stiffness coefficient of centering disk of loudspeaker |
| CN103310052B (en) * | 2013-06-09 | 2015-12-09 | 嘉善恩益迪电声技术服务有限公司 | A kind of Numerical Simulation Analysis method of speaker centring support sheet stiffness factor nonlinear characteristic |
| CN105163260A (en) * | 2015-07-09 | 2015-12-16 | 江苏米笛声学科技有限公司 | Loudspeaker diaphragm parameter detection method |
| CN105163260B (en) * | 2015-07-09 | 2018-05-29 | 江苏米笛声学科技有限公司 | Speaker diaphragm parameter detection method |
| CN105263095A (en) * | 2015-10-15 | 2016-01-20 | 浙江中科电声研发中心 | Measuring system for loudspeaker component stiffness coefficient and calculating method thereof |
| CN105263095B (en) * | 2015-10-15 | 2018-09-25 | 浙江中科电声研发中心 | Loudspeaker assembly stiffness factor measuring system and computational methods |
| CN111698633A (en) * | 2020-06-29 | 2020-09-22 | 时东阳 | Method for measuring TS parameters of loudspeaker |
| CN111698633B (en) * | 2020-06-29 | 2021-06-08 | 时东阳 | Method for measuring TS parameters of loudspeaker |
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| CN103079152B (en) | 2015-06-24 |
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