CN105931816B - A kind of wire winding of high sensitivity LVDT design methods and application this method - Google Patents
A kind of wire winding of high sensitivity LVDT design methods and application this method Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
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Abstract
The present invention relates to a kind of high sensitivity LVDT design methods and the wire winding of application this method, method and step are as follows：Step 1：L long loops are divided into m sections, are amm per segment length, every section of number of turn is ak, i.e. a1、a2、a3……akArranged in arithmetic series；Step 2：Arrangement mode is determined according to loop length；Step 3：A=3mm, spacing 0.072mm, at most can only be around 41.6 circles, first term a1=7, m=24, tolerance d=13.888, point eight most of, every parts 3, the arithmetic series that composition item number is 24；Processing step is as follows：Primary coiling, secondary rolling thread, secondary II coiling, secondary I coiling.The present invention, which realizes, arranges 4000 circles according to arithmetic series, can be designed that up to 1V/mm high sensitivity LVDT, the winding space of design is more than nominal line footpath, will not cause overlapping, magnetic interference situation, meet the use demand of user.
Description
Technical field
The present invention relates to displacement transducer technology field, and in particular to a kind of high sensitivity LVDT design methods and application should
The wire winding of method.
Background technology
All LVDT both at home and abroad, also it is more than ± 7.5mm without stroke, sensitivity is more than 100mv/v/mm, gradient is
0.75V/mm product.But stroke ± 8mm is needed in Aero-Space, the output voltage ± 6V LVDT in driving voltage 7V,
Its sensitivity S=6V/8mm*7V=107.1mm/V/mm, i.e. gradient are 0.75V/mm.
Prior art is that primary is flat around secondary is arranged by arithmetic series, and secondary number of total coils is equivalent to putting down around two layers, if L=
72mm scopes, for winding department away from for 0.072mm, putting down around two layers of totally 2000 circle, it is 0.35V/mm products that can only do gradient, to design height
Sensitivity product, the secondary coil number of turns double the above than the original number of turns, then winding department is away from for below 0.036mm, even if
With 48# enamel-covered wire energy coiling success, secondary resistance is too big, and for every group of secondary resistance up to 2140 Ω, secondary output impedance is 5136
Ω is more than 2K Ω technical indicators, can not design.
The content of the invention
In order to solve the deficiency in the presence of prior art, the present invention proposes a kind of high sensitivity LVDT design methods and should
With the wire winding of this method.
A kind of high sensitivity LVDT design methods, methods described step are as follows：
Step 1：L long loops are divided into m sections, are amm per segment length, every section of number of turn is ak, i.e. a1、a2、a3……akIn equal difference
Series arranges；
Step 2：Arrangement mode is determined according to loop length, arrangement mode is as follows：
(1) when loop length is 0~L/8mm, one layer of spaced winding can arrange；
(2) when loop length is L/8~L/4mm, can just be arranged around two layers, i.e., first layer is close around along with one layer
Spaced winding；
(3) when loop length is L/4~3/8Lmm, can just be arranged around three layers, i.e., two layers it is close around, add an interlayer around；
(4) when loop length is 3/8L~L/2mm, can just be arranged around four layers, i.e., three layers it is close around, add an interlayer around；
(5) when loop length is 1/2L~5/8Lmm, can just be arranged around five layers, i.e., four layers it is close around, add an interlayer around；
(6) when loop length is 5/8L~3/4Lmm, can just be arranged around six layers, i.e., five layers it is close around, add an interlayer around；
(7) when loop length is 3/4L~7/8Lmm, can just be arranged around seven layers, i.e., six layers it is close around, add an interlayer around；
(8) when loop length is 7/8Lmm~Lmm, can just be arranged around eight layers, i.e., seven layers it is close around, add an interlayer around；
Step 3：A=3mm, spacing 0.072mm, at most can only be close around 41.6 circles, first term a1=7, m=24, tolerance d=
13.888, point eight most of, every parts 3, the arithmetic series that composition item number is 24；
The arithmetic series is arranged as：
First layer：Including a1、a2、a3, the number of turns corresponds to 7,20.8,34.7 respectively；
The second layer：Including a4、a5、a6, the number of turns corresponds to 48.6,62.5,73.4 respectively；
Third layer：Including a7、a8、a9, the number of turns corresponds to 76.4,90.3,104.2 respectively；
4th layer：Including a10、a11、a12, the number of turns corresponds to 118,131.9,145.8 respectively；
Layer 5：Including a13、a14、a15, the number of turns corresponds to 159.7,173.6,187.5 respectively；
Layer 6：Including a16、a17、a18, the number of turns corresponds to 201.4,215.3,229.2 respectively；
Layer 7：Including a19、a20、a21, the number of turns corresponds to 243.1,256.9,270.8 respectively；
8th layer：Including a22、a23、a24, the number of turns corresponds to 284.7,298.6,312.5 respectively；
A kind of wire winding of high sensitivity LVDT design methods described in application, the processing step are as follows：
The first step：Primary coiling：
35#SPT enamel-covered wires, nominal line footpath 0.156mm, close around three layers, every layer 450 is enclosed, spacing 0.16mm；
Second step：Secondary rolling thread：
Using 42#SPT enamel-covered wires, nominal line footpath 0.071mm, coiling since midpoint is at 36mm, secondary I to the right it is close around
Four layers, every layer 500 circle, spacing 0.072mm；
5th layer to be close around 375 circles, spacing 0.072mm, spaced winding A；
6th interlayer is close around 250 circles, spacing 0.072mm around A；
7th layer is spaced winding A, close around 125 circles；
8th layer is spaced winding A, a lead-out wire is pulled out, with left half of 9th layer of initial in external connection；
3rd step：Secondary II coiling：
Secondary II is close around four layers to the left from midpoint, and every layer 500 is enclosed, spacing 0.072mm；
5th layer to be close around 375 circles, spacing 0.072mm, spaced winding B；
6th interlayer is then close around 250 circles, spacing 0.072mm around B；
7th layer is spaced winding B, close around 125 circles；
8th layer be spaced winding B subsequently around right half of 9th layer, it is close around 375 circle, spacing 0.072mm, spaced winding B, the 10th layer
Spaced winding B, close around 250 circles, spacing 0.072mm, 11th layer is close to be terminated as secondary II around 125 circles, spaced winding B, the 12nd interlayer around B
Tail；
4th step：Secondary I coiling：
Left one side of something is close around 375 circles, spacing 0.072mm, spaced winding A to the left since the 9th layer of midpoint；
10th interlayer is close around 250 circles, spacing 0.072mm around A；
11th layer is close around 125 circles, spaced winding A；
12nd interlayer terminates as secondary I tail around A；
So left half of 9th, 10,11,12 layer forms secondary I whole line with the right half of 1st, 2,3,4,5,6,7,8, layer
Circle.
The beneficial effects of the invention are as follows：The inventive method procedure is reasonable, realizes 4000 circles according to arithmetic series
Arrangement, up to 1V/mm high sensitivity LVDT is can be designed that according to technical scheme, and technology establishment is reasonable, design
Winding space be more than nominal line footpath, overlapping, magnetic interference situation will not be caused, meet the use demand of user.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the permutation table schematic diagram of the high sensitivity LVDT design methods of the present invention；
Fig. 2 is the winding displacement schematic diagram of the wire winding of the present invention；
Fig. 3 is primary head, the coiling arrangement schematic diagram of primary tail in wire winding of the invention；
Fig. 4 is the spaced winding A of present invention coiling schematic diagram；
Fig. 5 is the spaced winding B of present invention coiling schematic diagram.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, below it is right
The present invention is expanded on further.
As shown in Figures 1 to 5, Fig. 1 intermediate cams shape A is spaced winding, and rectangle is the close spaced winding constant around i.e. spacing, it is close around
Away from being all 0.072mm.
A kind of high sensitivity LVDT design methods, methods described step are as follows：
Step 1：L long loops are divided into m sections, are amm per segment length, every section of number of turn is ak, i.e. a1、a2、a3……akIn equal difference
Series arranges；
Step 2：Arrangement mode is determined according to loop length, arrangement mode is as follows：
(1) when loop length is 0~L/8mm, one layer of spaced winding can arrange；
(2) when loop length is L/8~L/4mm, can just be arranged around two layers, i.e., first layer is close around along with one layer
Spaced winding；
(3) when loop length is L/4~3/8Lmm, can just be arranged around three layers, i.e., two layers it is close around, add an interlayer around；
(4) when loop length is 3/8L~L/2mm, can just be arranged around four layers, i.e., three layers it is close around, add an interlayer around；
(5) when loop length is 1/2L~5/8Lmm, can just be arranged around five layers, i.e., four layers it is close around, add an interlayer around；
(6) when loop length is 5/8L~3/4Lmm, can just be arranged around six layers, i.e., five layers it is close around, add an interlayer around；
(7) when loop length is 3/4L~7/8Lmm, can just be arranged around seven layers, i.e., six layers it is close around, add an interlayer around；
(8) when loop length is 7/8Lmm~Lmm, can just be arranged around eight layers, i.e., seven layers it is close around, add an interlayer around；
Step 3：A=3mm, spacing 0.072mm, at most can only be close around 41.6 circles, first term a1=7, m=24, tolerance d=
13.888, point eight most of, every parts 3, the arithmetic series that composition item number is 24；
The arithmetic series is arranged as：
First layer：Including a1、a2、a3, the number of turns corresponds to 7,20.8,34.7 respectively；
The second layer：Including a4、a5、a6, the number of turns corresponds to 48.6,62.5,73.4 respectively；
Third layer：Including a7、a8、a9, the number of turns corresponds to 76.4,90.3,104.2 respectively；
4th layer：Including a10、a11、a12, the number of turns corresponds to 118,131.9,145.8 respectively；
Layer 5：Including a13、a14、a15, the number of turns corresponds to 159.7,173.6,187.5 respectively；
Layer 6：Including a16、a17、a18, the number of turns corresponds to 201.4,215.3,229.2 respectively；
Layer 7：Including a19、a20、a21, the number of turns corresponds to 243.1,256.9,270.8 respectively；
8th layer：Including a22、a23、a24, the number of turns corresponds to 284.7,298.6,312.5 respectively；
A kind of wire winding of high sensitivity LVDT design methods described in application, the processing step are as follows：
The first step：Primary coiling：
35#SPT enamel-covered wires, nominal line footpath 0.156mm, close around three layers, every layer 450 is enclosed, spacing 0.16mm；
Second step：Secondary rolling thread：
Using 42#SPT enamel-covered wires, nominal line footpath 0.071mm, coiling since midpoint is at 36mm, secondary I to the right it is close around
Four layers, every layer 500 circle, spacing 0.072mm, direction of winding is as shown by the arrows in Figure 2；
5th layer is shown in Fig. 4 to be close around 375 circles, spacing 0.072mm, spaced winding A；
6th interlayer is close around 250 circles, spacing 0.072mm around A；
7th layer is spaced winding A, close around 125 circles；
8th layer is spaced winding A, a lead-out wire is pulled out, with left half of 9th layer of initial in external connection；
3rd step：Secondary II coiling：
Secondary II is close around four layers to the left from midpoint, every layer 500 circle, spacing 0.072mm, and direction is as shown in Figure 2；
5th layer is enclosed to be close around 375, spacing 0.072mm, spaced winding B, sees Fig. 5；
6th interlayer is then close around 250 circles, spacing 0.072mm around B；
7th layer is spaced winding B, close around 125 circles；
8th layer be spaced winding B subsequently around right half of 9th layer, it is close around 375 circle, spacing 0.072mm, spaced winding B, the 10th layer
Spaced winding B, close around 250 circles, spacing 0.072mm, 11th layer is close to be terminated as secondary II around 125 circles, spaced winding B, the 12nd interlayer around B
Tail；
4th step：Secondary I coiling：
Left one side of something is close around 375 circles, spacing 0.072mm, spaced winding A to the left since the 9th layer of midpoint；
10th interlayer is close around 250 circles, spacing 0.072mm around A；
11th layer is close around 125 circles, spaced winding A；
12nd interlayer terminates as secondary I tail around A；
So left half of 9th, 10,11,12 layer forms secondary I whole line with the right half of 1st, 2,3,4,5,6,7,8, layer
Circle.
Implemented according to technical scheme, manufactured high sensitivity LVDT, test result is as follows：
The high sensitivity LVDT test result summary sheets of table 1
| Stroke mm | Output voltage V | Theoretical value V | Error V | The linearity | Gradient V/mm |
| -8 | -8.473 | -8.4851 | 0.0121 | 0.07% | 1.060638 |
| -6.4 | -6.781 | -6.7859 | 0.0049 | 0.03% | 1.060297 |
| -4.8 | -5.09 | -5.0867 | -0.0033 | - 0.02% | 1.059729 |
| -3.2 | -3.395 | -3.3878 | -0.0075 | - 0.04% | 1.058594 |
| -1.6 | -1.6983 | -1.6883 | -0.01 | - 0.06% | -1.055188 |
| 0 | 0.012 | 0.0109 | 0.0011 | 0.01% | - |
| 1.6 | 1.701 | 1.7101 | -0.0091 | - 0.05% | 1.068813 |
| 3.2 | 3.405 | 3.4093 | -0.0043 | - 0.03% | 1.065406 |
| 4.8 | 5.11 | 5.1085 | 0.0015 | 0.01% | 1.064271 |
| 6.4 | 6.815 | 6.8077 | 0.0073 | 0.04% | 1.063703 |
| 8 | 8.514 | 8.5069 | 0.0071 | 0.04% | 1.063363 |
As shown in Table 1, sensor gradient is 1.06V/mm, that is, can be designed that up to 1V/mm height after using the present invention
Sensitivity LVDT.
In addition, in order to adapt to the use demand in Aero-Space, i.e. sensor gradient required value 0.75V/mm, in upper table
Sensor gradient is more than required value 0.75V/mm, therefore redesigning reduces tolerance, and test result is as follows：
The Aero-Space of table 2 high sensitivity LVDT test result summary sheets
As shown in Table 2, sensor gradient：0.754V/mm；Comply fully with user's requirement.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these change and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Thing defines.
Claims (3)
- A kind of 1. high sensitivity LVDT design methods, it is characterised in that：Methods described step is as follows：Step 1：L long loops are divided into m sections, are amm per segment length, every section of number of turn is ak, i.e. a1、a2、a3……akIn arithmetic series Arrangement；Step 2：Arrangement mode is determined according to loop length, arrangement mode is as follows：(1) when loop length is 0~L/8mm, one layer of spaced winding can arrange；(2) when loop length is L/8~L/4mm, can just be arranged around two layers, i.e., first layer it is close around, along with an interlayer around；(3) when loop length is L/4~3/8Lmm, can just be arranged around three layers, i.e., two layers it is close around, add an interlayer around；(4) when loop length is 3/8L~L/2mm, can just be arranged around four layers, i.e., three layers it is close around, add an interlayer around；(5) when loop length is 1/2L~5/8Lmm, can just be arranged around five layers, i.e., four layers it is close around, add an interlayer around；(6) when loop length is 5/8L~3/4Lmm, can just be arranged around six layers, i.e., five layers it is close around, add an interlayer around；(7) when loop length is 3/4L~7/8Lmm, can just be arranged around seven layers, i.e., six layers it is close around, add an interlayer around；(8) when loop length is 7/8Lmm~Lmm, can just be arranged around eight layers, i.e., seven layers it is close around, add an interlayer around；Step 3：A=3mm, spacing 0.072mm, at most can only be close around 41.6 circles, first term a1=7, m=24, tolerance d= 13.888, point eight most of, every parts 3, the arithmetic series that composition item number is 24；
- A kind of 2. high sensitivity LVDT design methods according to claim 1, it is characterised in that：The arithmetic series arrangement For：First layer：Including a1、a2、a3, the number of turns corresponds to 7,20.8,34.7 respectively；The second layer：Including a4、a5、a6, the number of turns corresponds to 48.6,62.5,73.4 respectively；Third layer：Including a7、a8、a9, the number of turns corresponds to 76.4,90.3,104.2 respectively；4th layer：Including a10、a11、a12, the number of turns corresponds to 118,131.9,145.8 respectively；Layer 5：Including a13、a14、a15, the number of turns corresponds to 159.7,173.6,187.5 respectively；Layer 6：Including a16、a17、a18, the number of turns corresponds to 201.4,215.3,229.2 respectively；Layer 7：Including a19、a20、a21, the number of turns corresponds to 243.1,256.9,270.8 respectively；8th layer：Including a22、a23、a24, the number of turns corresponds to 284.7,298.6,312.5 respectively；
- 3. a kind of wire winding of high sensitivity LVDT design methods using any one of claim 1 to 2, its feature It is：The processing step is as follows：The first step：Primary coiling：35#SPT enamel-covered wires, nominal line footpath 0.156mm, close around three layers, every layer 450 is enclosed, spacing 0.16mm；Second step：Secondary rolling thread：Using 42#SPT enamel-covered wires, nominal line footpath 0.071mm, since midpoint is at 36mm, secondary I is close around four to the right for coiling Layer, every layer 500 circle, spacing 0.072mm；5th layer to be close around 375 circles, spacing 0.072mm, spaced winding A；6th interlayer is close around 250 circles, spacing 0.072mm around A；7th layer is spaced winding A, close around 125 circles；8th layer is spaced winding A, a lead-out wire is pulled out, with left half of 9th layer of initial in external connection；3rd step：Secondary II coiling：Secondary II is close around four layers to the left from midpoint, and every layer 500 is enclosed, spacing 0.072mm；5th layer to be close around 375 circles, spacing 0.072mm, spaced winding B；6th interlayer is then close around 250 circles, spacing 0.072mm around B；7th layer is spaced winding B, close around 125 circles；8th layer be spaced winding B subsequently around right half of 9th layer, it is close around 375 circle, spacing 0.072mm, spaced winding B, the 10th interlayer around B, close around 250 circles, spacing 0.072mm, 11th layer is close to be terminated as secondary II tail around 125 circles, spaced winding B, the 12nd interlayer around B；4th step：Secondary I coiling：Left one side of something is close around 375 circles, spacing 0.072mm, spaced winding A to the left since the 9th layer of midpoint；10th interlayer is close around 250 circles, spacing 0.072mm around A；11th layer is close around 125 circles, spaced winding A；12nd interlayer terminates as secondary I tail around A；So left half of 9th, 10,11,12 layer forms secondary I whole coil with the right half of 1st, 2,3,4,5,6,7,8, layer.
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| CN109633232B (en) * | 2018-12-20 | 2021-07-13 | 安徽感航电子科技有限公司 | Design method of small-stroke LVRT compensation coil |
| CN111539179B (en) * | 2020-04-28 | 2022-10-18 | 厦门乃尔电子有限公司 | Calculation and design winding method of high-sensitivity LVDT |
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| US3017589A (en) * | 1958-05-13 | 1962-01-16 | Int Resistance Co | Differential transformer |
| US3054976A (en) * | 1958-11-18 | 1962-09-18 | Schaevitz Engineering | Differential transformer |
| GB2182444A (en) * | 1985-09-20 | 1987-05-13 | Europ Propulsion | Movable core transducer |
| US4808958A (en) * | 1987-07-23 | 1989-02-28 | Bourns Instruments, Inc. | Linear variable differential transformer with improved secondary windings |
| CN104465044A (en) * | 2013-09-17 | 2015-03-25 | 精量电子（深圳）有限公司 | Linear variable differential transformer and winding method thereof |
| CN204332574U (en) * | 2014-12-03 | 2015-05-13 | 武汉航空仪表有限责任公司 | The coil winding construction that a kind of LVDT is novel |
| CN104900393A (en) * | 2015-05-21 | 2015-09-09 | 广州金升阳科技有限公司 | Winding method and product for flyback transformer |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3017589A (en) * | 1958-05-13 | 1962-01-16 | Int Resistance Co | Differential transformer |
| US3054976A (en) * | 1958-11-18 | 1962-09-18 | Schaevitz Engineering | Differential transformer |
| GB2182444A (en) * | 1985-09-20 | 1987-05-13 | Europ Propulsion | Movable core transducer |
| US4808958A (en) * | 1987-07-23 | 1989-02-28 | Bourns Instruments, Inc. | Linear variable differential transformer with improved secondary windings |
| CN104465044A (en) * | 2013-09-17 | 2015-03-25 | 精量电子（深圳）有限公司 | Linear variable differential transformer and winding method thereof |
| CN204332574U (en) * | 2014-12-03 | 2015-05-13 | 武汉航空仪表有限责任公司 | The coil winding construction that a kind of LVDT is novel |
| CN104900393A (en) * | 2015-05-21 | 2015-09-09 | 广州金升阳科技有限公司 | Winding method and product for flyback transformer |
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