CN106767951A - A kind of displacement transducer - Google Patents
A kind of displacement transducer Download PDFInfo
- Publication number
- CN106767951A CN106767951A CN201611216525.4A CN201611216525A CN106767951A CN 106767951 A CN106767951 A CN 106767951A CN 201611216525 A CN201611216525 A CN 201611216525A CN 106767951 A CN106767951 A CN 106767951A
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- CN
- China
- Prior art keywords
- housing
- coil block
- displacement transducer
- ring flange
- coil
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a kind of displacement transducer,Core assembly (1),Coil block (2),End cap (3) and housing (4) and housing (5),Housing (4) is hollow structure,End cap (3) is installed on housing (4) first end,Core assembly (1) and coil block (2) are coaxially disposed in housing (4) inner chamber,Housing (5) is surrounded by outside coil block (2),Core assembly (1) is rod-like structure,It is displacement inputting apparatus,Including the iron core (10) and pull bar (11) that are coaxially disposed,Second end of iron core (10) and the first end of pull bar (11) are threadably secured connection,Second end connecting power device of pull bar (11),The first end of iron core (10) is coaxially disposed in coil block (2) through end cap (3),Including rubber cushion (6),Bushing (8),Rubber cushion (6) is pressed between the first end and end cap (3) of the coil block (2),Coil block (2) other end is cased with bushing (8).
Description
Technical field
The invention belongs to engineering technology file field, and in particular to a kind of displacement transducer.
Background technology
Displacement transducer is operated using electromagnetic induction principle, and tested physics displacement is converted to coil by mutual inductance
Induced voltage, so as to realize displacement measurement.Its application in displacement measurement has had the history of decades, excellent with its uniqueness
Point, is widely used to the displacement measurement and feedback of flight control system and servo actuator, measurement of radar control system displacement etc.
Aspect.
Be applied to the displacement transducer of flight control system and servo control mechanism, due to for servo actuator displacement measurement with it is anti-
Feedback, its reliability directly affects the performance and reliability of servo-drive system.With the development that the models such as air weapon work, product is resistance to
Temperature, impact resistance requirement more and more higher, installation dimension is limited, needs that research and development are a kind of to meet narrow and small requirements of installation space and in width badly
Reliably working under temperature range environment, and meet the new highly reliable displacement of flight control system and servo actuator high reliability request
Sensor.
The content of the invention
The purpose of the present invention is：Overcome the defect of prior art, there is provided a kind of to meet narrow and small requirements of installation space,
Energy reliably working under wide temperature range environment, and meet the new displacement biography of flight control system and servo actuator high reliability request
Sensor.
The technical scheme is that：The invention provides a kind of displacement transducer, core assembly (1), coil block
(2), end cap (3) and housing (4) and housing (5), housing (4) is hollow structure, and end cap (3) is installed on housing (4) first end,
Core assembly (1) and coil block (2) are coaxially disposed in housing (4) inner chamber, and coil block (2) is surrounded by housing (5), iron core outward
Component (1) is rod-like structure, is displacement inputting apparatus, including the iron core (10) and pull bar (11) being coaxially disposed, iron core (10)
The first end of the second end and pull bar (11) is threadably secured connection, the second end connecting power device of pull bar (11), iron core
(10) first end is coaxially disposed in coil block (2) through end cap (3),
It is characterised in that it includes rubber cushion (6), bushing (8), press between the first end and end cap (3) of the coil block (2)
There is rubber cushion (6), coil block (2) other end is cased with bushing (8).
Further, also including ring flange (7), the ring flange (7) is installed on the end of the housing (4) second, the method
Be installed on the housing (4) in closing space by blue disk (7), and the ring flange (7) is cylindrical-shaped structure, and ring flange (7) is uniform
Some bolts hole (15) are provided with, housing (4) is co-axially mounted with ring flange (7) by bolt and is integrated, the outer face of ring flange (7)
Place is provided with the draw-in groove (16) of sector, and draw-in groove (16) is provided with a unidirectional clip (17), and unidirectional clip (17) is for fixed coil
The lead-out wire of component (2).
Further, near the first end of housing (4) on be provided with anti-attrition groove (9), anti-attrition groove is provided with anti-attrition on (9)
Ring.
Further, wearing ring is made using polytetrafluoroethylene (PTFE).
Further, rubber cushion (6) is made using High tear resistance silicon rubber.
Further, coil block (2) surface alkali-free glass fibre band winding, then using organic silicon insulating varnish vacuum
Dipping lacquer pressurize once, then common dipping lacquer paint-dipping process once, it is integrally formed whole coil block (2).
Further, coil block (2) includes skeleton (12), and the skeleton (12) of coil block (2) selects polyimides mould
Plastics.
It is an advantage of the invention that：(1) using the cantilever beam mounting means of ring flange 7, that is, realize and combined closely with whole machine,
Installing space has been effectively saved again, increased the reliability of product；(2) setting of wearing ring effectively prevent displacement transducer
The displacement transducer for producing friction with the directly contact of whole machine inwall and causing fails, and realizes soft support, overcomes cantilever beam
Influence of the structure under vibration, ballistics environment to measuring accuracy, improves job stability under its vibration operating mode, further carries
The reliability of product high；(3) the two-part rank for using shaves the linearity that winding method improves displacement transducer, meets size
It is required that, improve the feedback accuracy of whole machine；(4) pretightning force that treatment and end cap 3 after the coiling of coil block 2 applies, it is ensured that
The global reliability of the mal-condition such as strong vibration impact bottom displacement sensor；(5) non-metallic material such as skeleton 12, wearing ring, rubber cushion 6
Matter selects high-low temperature resistant material, it is ensured that the requirement of whole machine long-term work and storage under wide temperature range environment；(5) ring flange
7 are installed in closing space the housing 4 so that sensor is anti-to drench with rain, anti-sand dust and three anti-abilities are greatly improved.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of displacement transducer.
Fig. 2 is coil block two-part winding method schematic diagram.
Fig. 3 is the survey side view of ring flange.
Fig. 4 is a kind of monnolithic case schematic diagram of displacement transducer.
In figure, 1- core assemblies, 2- coil blocks, 3- end caps, 4- housings, 5- housings, 6- rubber cushions, 7- ring flanges, 8-
Bushing, 9- anti-attrition grooves, 10- patch cores, 11- pull bars, 12- skeletons, 13- primary coils, 14- secondary coils, 15- bolts hole, 16- cards
Groove, the unidirectional clips of 17-
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of displacement transducer (hereinafter referred to as displacement transducer), its structure as Figure 1 and Figure 4, including core assembly 1,
Coil block 2, end cap 3, housing 4, housing 5, rubber cushion 6, ring flange 7, bushing 8, anti-attrition groove 9.
The mounting means of displacement transducer is cantilever beam structure；Wherein hollow columnar structures of housing 4, the left end of housing 4 is
Flat type cylindrical-shaped structure ring flange 7, housing 4 and ring flange 7 are coaxial integrated structure, as shown in figure 3, in ring flange 7
Outer face lead-out wire at be provided with the draw-in groove 16 of sector, and be uniformly provided with some bolts hole 15, displacement is passed for inserting bolt
Sensor housing is fixed with actuator, and draw-in groove 16 is provided with a unidirectional clip 17, for lead-out wire to be drawn and fixed, while
Lead-out wire is avoided to fracture equivalent risk；The right-hand member of housing 4 is end cap 3, and end cap 3 is connected through a screw thread fixation with housing 4, by coil group
The extruding of part 2 is fixed on enclosure interior, and the center of end cap 3 is provided with circular hole, with by core assembly 1；In housing 4 away from ring flange 7
End is provided with anti-attrition groove 9, by installing the wearing ring that polytetrafluoroethylene (PTFE) makes on anti-attrition groove 9, efficiently avoid displacement transducer
The displacement transducer for producing friction with the directly contact of whole machine inwall and causing fails, and realizes soft support, overcomes cantilever beam
Influence of the structure under vibration, ballistics environment to measuring accuracy, improves job stability under its vibration operating mode, further carries
The reliability of product high；The pull bar 11 of displacement transducer is fastened on servo actuator and lives by oscillating bearing and its tight split nut
On stopper rod inner chamber, moved back and forth with piston rod, displacement transducer exports transformed device and is transformed to and actuator pistons bar
The corresponding magnitude of voltage of actual displacement amount, and participate in servo closed control.
The rod-like structure that core assembly 1 is, including coaxial mounted iron core 10 and the two parts of pull bar 11, the left end of pull bar 11 set
There is 1 to open externally threaded raised installation position, iron core right-hand member is provided with and raised peace with the raised installation position corresponding position of pull bar 11
Dress position external diameter matches and the interior mounting hole for opening screw thread, and iron core 10 and pull bar 11 are connected by threaded coaxial, pull bar 11
Right-hand member is connected in the actuator of servo control mechanism, is displacement inputting apparatus.
In the present invention, in actual design, housing 4 has 175 millimeters, and the length of coil block 2 is 166.3 millimeters, wherein around
The length in line region is 162 millimeters, much smaller than traditional design requirement length.By magnetic circuit calculate, displacement transducer it is existing around
Precision processed can reach 2% or so.In order to expand the displacement transducer range of linearity, coil block of the invention 2 employs two-part
Ladder winding method, as shown in Figure 2：From left to right uniform close is arranged around 3~4 layers of primary coil 13 on skeleton 12, respectively in bone
The stairstepping sublevel arrangement hierarchical level coil 14 of coiling 8~12 is pressed at the left and right two ends of frame 12, and the winding at left and right two ends is symmetrical；Actually set
In meter, stepped coiling scheme can be determined with the anti-computational methods for pushing away bucking coil of the theory of error, while sunykatuib analysis displacement is passed
The Distribution of Magnetic Field of sensor, optimizes coiling parameter, finds out the optimal compensation loop length and width, makes displacement transducer linearity index
It is 0.4% or so, further increases the feedback accuracy of whole machine, for the realization of the servo control technique of airborne model has been provided
The support of power.
After the completion of the coiling of coil block 2, surface alkali-free glass fibre band winding, then using organic silicon insulating varnish vacuum
Dipping lacquer pressurize once, then common dipping lacquer paint-dipping process once, whole coil block 2 is integrally formed, on the one hand can improve
Product itself insulating properties, on the other hand improve the Environmental ability of product mechanical (durable value highest 1.6g2/ Hz, each axle
To 32h).
In view of the environmental quality of the low-temperature working for recording model, the skeleton 12 in coil block 2 selects polyimides mould
Plastics, material has superior high and low temperature resistance, its low temperature resistant to -200~+215 DEG C of document report in itself.
The rubber cushion 6 of High tear resistance silicon rubber making is provided between the right side of coil block 2 and end cap 3, end cap 3 is by applying
Plus 1~pressure extrusion of the 1.3N rubber cushion 6.High tear resistance silicon rubber high temperature performance is good, can be in -45~+215 DEG C of temperature ranges
Work throughout the year, silicon rubber its storage life is more than 10 years.Meet whole machine long-term work and storage under wide temperature range environment
Deposit requirement.
The assembling process of displacement transducer：First the He of primary coil 13 is completed on skeleton 12 with two-part ladder canoe
The coiling of secondary coil 14, then alkali-free glass fibre band winding, dipping lacquer are carried out to the coil after coiling, it is whole coil block 2
It is integrally formed, then after coil wraps 2 housings 5 up and down, 4 lead-out wires of primary coil 13 and secondary coil 14 is drawn
Go out, upper bushing 8 is covered in left end, four mouths are provided with bushing 8 to be used for through lead-out wire and allow it not interfere with each other；Bushing will be packaged
The cavity of the 8 insertion housing 4 of coil block 2 and after withstanding the left side of cavity, rubber cushion 6 is pressed into the right-hand member of coil block 2, then
In the outer screw-in end cap 3 of rubber cushion 6, end cap 3 is connected through a screw thread fixation with housing 2；By 4 lead-out wires be fixed on unidirectional clip 17 it
On；During the iron core 10 of core assembly 1 finally is inserted into coil block 2 through end cap 3.
Embodiments of the invention are explained in detail above, above-mentioned implementation method is only most highly preferred embodiment of the invention,
But the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, can also be
Made a variety of changes on the premise of not departing from present inventive concept.
Claims (7)
1. a kind of displacement transducer, core assembly (1), coil block (2), end cap (3) and housing (4) and housing (5), housing
(4) it is hollow structure, end cap (3) is installed on housing (4) first end, and core assembly (1) and coil block (2) are coaxially disposed in shell
Housing (5) is surrounded by outside body (4) inner chamber, coil block (2), core assembly (1) is rod-like structure, is displacement inputting apparatus, bag
The iron core (10) and pull bar (11) being coaxially disposed are included, the second end of iron core (10) and the first end of pull bar (11) are threadably secured
Connection, the second end connecting power device of pull bar (11), the first end of iron core (10) is coaxially disposed in coil group through end cap (3)
In part (2),
It is characterised in that it includes rubber cushion (6), bushing (8), glue is pressed between the first end and end cap (3) of the coil block (2)
Pad (6), coil block (2) other end is cased with bushing (8).
2. displacement transducer according to claim 1, it is characterised in that also including ring flange (7), the ring flange (7)
The end of the housing (4) second is installed on, be installed on the housing (4) in closing space by the ring flange (7), the ring flange
(7) it is cylindrical-shaped structure, ring flange (7) is uniformly provided with some bolts hole (15), housing (4) is same by bolt and ring flange (7)
Axle is installed and is integrated, and the draw-in groove (16) of sector is provided with the outer face of ring flange (7), and draw-in groove (16) is provided with a unidirectional clip
(17), lead-out wire of the unidirectional clip (17) for fixed coil component (2).
3. displacement transducer according to claim 1, it is characterised in that be provided near the first end of housing (4) and subtracted
Slot grinding (9), anti-attrition groove is provided with wearing ring on (9).
4. a kind of displacement transducer as claimed in claim 3, it is characterised in that wearing ring is made using polytetrafluoroethylene (PTFE).
5. a kind of displacement transducer as claimed in claim 1, it is characterised in that rubber cushion (6) is made using High tear resistance silicon rubber.
6. a kind of displacement transducer as claimed in claim 1, it is characterised in that coil block (2) surface is fine with alkali-free glass
Dimension band winding, then using organic silicon insulating varnish vacuum pressed dipping lacquer once, then common dipping lacquer paint-dipping process once, make whole
Coil block (2) is integrally formed.
7. a kind of displacement transducer as claimed in claim 1, it is characterised in that coil block (2) includes skeleton (12), coil
The skeleton (12) of component (2) selects polyesteramide model plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216525.4A CN106767951A (en) | 2016-12-26 | 2016-12-26 | A kind of displacement transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216525.4A CN106767951A (en) | 2016-12-26 | 2016-12-26 | A kind of displacement transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106767951A true CN106767951A (en) | 2017-05-31 |
Family
ID=58925769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611216525.4A Pending CN106767951A (en) | 2016-12-26 | 2016-12-26 | A kind of displacement transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106767951A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799374A (en) * | 2018-05-07 | 2018-11-13 | 西安航空制动科技有限公司 | A kind of airplane wheel disk type brake wear indicating device |
| CN110805632A (en) * | 2019-10-28 | 2020-02-18 | 西安航空制动科技有限公司 | Abrasion loss indicating rod for evaluating remaining landing and landing number of airplane brakes and evaluation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126131A (en) * | 1990-09-17 | 1992-04-27 | Hitachi Medical Corp | Magnetic resonance imaging device |
| CN101162641A (en) * | 2006-10-13 | 2008-04-16 | 珠海优特电力科技股份有限公司 | Magnetic maintaining electric solenoid with signal feed back |
-
2016
- 2016-12-26 CN CN201611216525.4A patent/CN106767951A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126131A (en) * | 1990-09-17 | 1992-04-27 | Hitachi Medical Corp | Magnetic resonance imaging device |
| CN101162641A (en) * | 2006-10-13 | 2008-04-16 | 珠海优特电力科技股份有限公司 | Magnetic maintaining electric solenoid with signal feed back |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799374A (en) * | 2018-05-07 | 2018-11-13 | 西安航空制动科技有限公司 | A kind of airplane wheel disk type brake wear indicating device |
| CN110805632A (en) * | 2019-10-28 | 2020-02-18 | 西安航空制动科技有限公司 | Abrasion loss indicating rod for evaluating remaining landing and landing number of airplane brakes and evaluation method |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
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| WD01 | Invention patent application deemed withdrawn after publication |