CN105659804B - A kind of novel four redundant displacement sensors - Google Patents
A kind of novel four redundant displacement sensorsInfo
- Publication number
- CN105659804B CN105659804B CN201110013790.3A CN201110013790A CN105659804B CN 105659804 B CN105659804 B CN 105659804B CN 201110013790 A CN201110013790 A CN 201110013790A CN 105659804 B CN105659804 B CN 105659804B
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- China
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- millimeters
- disk
- housing
- coil block
- core assembly
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 46
- 238000009434 installation Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000001105 regulatory Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 7
- 101700078171 KNTC1 Proteins 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 206010049979 Airway complication of anaesthesia Diseases 0.000 description 1
- 235000015842 Hesperis Nutrition 0.000 description 1
- 240000004804 Iberis amara Species 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 201000009910 diseases by infectious agent Diseases 0.000 description 1
- 230000003334 potential Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
The invention belongs to displacement transducer technology field, specifically belong to a kind of many redundant displacements sensor. The invention provides a kind of novel four redundant displacement sensors, thus the reliability of servo control mechanism displacement sensing apparatus in raising New Launch, comprise push rod (1), disk (2), stage clip, pad, core assembly, coil block (4), drive end bearing bracket (5), rear end cap (6) and housing (7); Wherein, push rod (1) is even displacement inputting apparatus; The junction of push rod (1) and disk (2) is provided with stage clip; It is upper that four pull bars (3) are connected in disk (2) in parallel, and the ring gap position in pull bar (3) and disk (2) junction is provided with the pad that core assembly installation site can be regulated; Housing (7) is cylindrical-shaped structure, and centre has through hole; One group of coil block (4) and core assembly is placed in each through hole; Coil block (4) extruding is fixed on enclosure interior by drive end bearing bracket (5), and the wire in coil block (4) spreads out of by rear end cap (6), thus the functional reliability of system effectively can be improve.<pb pnum="1" />
Description
Technical field
The invention belongs to displacement transducer technology field, specifically belong to a kind of many redundant displacements sensor.
Background technology
Utilize electromagnetic induction principle to carry out the displacement transducer of work, tested physics displacement is turned by mutual inductanceBe changed to the induced voltage of coil, thus realize displacement measurement. Its basic mode is to adopt the differential transformation of screwed pipe shapeDevice formula, operation principle as shown in Figure 1: sensor need an AC power, be supplied to primary coil, produceAn alternating magnetic field, comprises two secondary coils of bucking coil of step by electromotive force differential concatenation, works as ironWhen core is in the centre position of two secondary coils, the induced potential equal and opposite in direction that two secondary coils produce, directionOn the contrary, output voltageWhen iron core departs from centre position, the mutual inductance between two secondary coils occursChange, both induced potentials are no longer equal, haveExport, this signal is transformed into iron core moves through converterThe DC voltage that the size and Orientation of momentum is consistent, the displacement that namely reaches iron core converts voltage signal to and exportsObject. The application of this induction displacement transducer in displacement measurement had the history of decades,With its particular advantages, be widely used in guided missile, the displacement measurement of flight control system and servo-drive system actuator withFeedback, the aspects such as the measurement of radar control system displacement.
As shown in Figure 1, induction displacement transducer is widely used in Long March series rockets and guided missile is watchedTake mechanism, for servo actuator displacement measurement and feedback, its reliability directly affects the performance of servo-drive systemAnd reliability. Along with carrying out of the model work such as manned space flight, product reliability requires more and more higher, is fullThe requirement of foot rocket of new generation and guided missile high reliability and security, redundancy new technology need be carried out and structure reliableResearch and the test of property.
Summary of the invention
The object of this invention is to provide a kind of novel four redundant displacement sensors, thus improve New LaunchThe reliability of middle servo control mechanism displacement sensing apparatus, and with other four redundance units compatibility.
In order to realize this purpose, technical scheme of the present invention is: a kind of novel four redundant displacement sensors,Comprise push rod, disk, stage clip, pad, core assembly, coil block, drive end bearing bracket, rear end cap and housing;Wherein, push rod is connected in the actuator of servo control mechanism, is displacement inputting apparatus; Have in the middle of disk circular hole withPush rod connection, the junction of push rod and disk is provided with the annular gap of 1.4 millimeters, and gap location is provided with stage clip;Four pull bars are connected in parallel on disk, make each core assembly obtain identical displacement input quantity, are drawingThe ring gap position of bar and disk junction is provided with the pad that core assembly installation site can be regulated; HousingBe that diameter is 55 millimeters, length is the cylindrical-shaped structure of 770 millimeters, and in the middle of housing, having four diameters is 8The through hole of millimeter; In each through hole, place one group of coil block and core assembly, the length of coil block is 746Millimeter; Core assembly is that length is 778 millimeters, the rod-like structure that diameter is 5 millimeters; Core assembly is by pull barWith iron core two parts composition, pull bar length is 515.5 millimeters, and core length is 276 millimeters, pull bar and iron coreBe threaded connection, reach is 13.5 millimeters; The housing end face of drawing pull bar is provided with four with housingLead to the hole site correspondence, internal diameter is the circular drive end bearing bracket of 8 millimeters, and coil block extruding is fixed on to housingInner; Another endface position of housing is provided with circular rear end cap, and the wire in coil block is spread out of.
Further, a kind of novel four redundant displacement sensors as above, wherein, coil block adoptsTwo-part structure, cell winding canoe have employed tight row after 3 ~ 4 layers of primary coil, wholeWinding portion sublevel arranges the compensation winding of secondary coil.
Further, a kind of novel four redundant displacement sensors as above, wherein, coil block adoptsThe 10000HCA-016 model of the SCHAEVITZ company of the U.S..
A kind of novel four redundant displacement sensors of the present invention have employed the technology of four Redundancy Design in parallel, overcomeReliability is not high, zero-bit regulates problem and anti-torsion problem, and this product with compact structure, reliability are high. ThisBright advantage is compared with prior art: displacement transducer is very tight at structure space and working environment restrictionIn the situation of lattice, achieve structure parallel connection, function Si in parallel road redundant line displacement measurement, significantly reduceUtilize the once density of infection of failure of removal of displacement transducer winding of electromagnetic induction principle, effectively improve systemFunctional reliability, there is important using value and wide promotion prospect.
Accompanying drawing explanation
Fig. 1 is the displacement transducer principle schematic of electromagnetic induction principle;
Fig. 2 is a kind of structural representation of novel four redundant displacement sensors.
In figure, 1-push rod, 2-disk, 3-pull bar, 4-coil block, 5-rear end cap, 6-drive end bearing bracket, 7-housing,8-iron core.
Detailed description of the invention
Below in conjunction with accompanying drawing, a kind of novel four redundant displacement sensors of the present invention are described in detail. As accompanying drawing 2Shown in, a kind of novel four redundant displacement sensors, comprise push rod 1, disk 2, stage clip, pad, iron core groupPart, coil block 4, drive end bearing bracket 6, rear end cap 5 and housing 7; Wherein, push rod 1 is connected in servo control mechanismIn actuator, it is displacement inputting apparatus; Circular hole is had to be connected with push rod 1 push rod 1 and circle in the middle of disk 2The junction of dish 2 is provided with the annular gap of 1.4 millimeters, and gap location is provided with stage clip; Four in parallel companies of pull bar 3Be connected on disk 2, make each core assembly obtain identical displacement input quantity, at pull bar 3 and disk 2The annular gap position of junction is provided with the pad that core assembly installation site can be regulated; Housing 7 is straightFootpath is 55 millimeters, and length is the cylindrical-shaped structure of 770 millimeters, and in the middle of housing 7, having four diameters is 8 millisThe through hole of rice; In each through hole, place one group of coil block 4 and core assembly, the length of coil block 4 is746 millimeters; Core assembly is that length is 778 millimeters, the rod-like structure that diameter is 5 millimeters; Core assembly is by drawingBar 3 and iron core 8 two parts composition, pull bar 3 length is 515.5 millimeters, and iron core 8 length is 276 millimeters,Pull bar 3 and iron core 8 are threaded connection, and reach is 13.5 millimeters; Draw the housing end face of pull bar 3Be provided with four corresponding with lead to the hole site in housing 7, internal diameter is the circular drive end bearing bracket 6 of 8 millimeters, by coilAssembly 4 extruding is fixed on housing 7 inside; Another endface position of housing 7 is provided with circular rear end cap 5,Wire in coil block 4 is spread out of.
A kind of novel four redundant displacement sensors as above, wherein, coil block 4 have employed two-partStructure, cell winding canoe have employed tight row after 3 ~ 4 layers of primary coil, whole winding portionSublevel arranges the compensation winding of secondary coil. Coil block 4 adopts the SCHAEVITZ company of the U.S.10000HCA-016 model.
A kind of novel four redundant displacement sensors of the present invention are identical by four physical dimensions, electric parameterCoil block 4, be arranged on sensor housing 7 internal parallel and form. The coil block 4 of four series windingsCorresponding four movable core assemblies respectively, the physical dimension of four iron cores of movable core assembly is also identical.Four coil block 4 iron cores 8 corresponding to it form closed magnetic circuit separately. When the core assembly of sensor withWhen being moved back and forth by test product, four sensor coils assemblies 4 in parallel export simultaneously, finally realThe highly reliable displacement of the lines amount measurement function of compact four redundancy of existing structure parallel connection, function parallel connection.
Four redundant displacement transducer zeroings regulate the zero-bit that mainly makes four core assemblies to overlap, and ensure simultaneouslyThe installation zero-bit of sensor and complete machine. When four redundant displacement transducer zeroings regulate, stationary housing 7 and coilAssembly 4, by changing the thickness of pad between core assembly and disk, regulates the installation site of four core assemblies,Its electrical null position is overlapped.
Because sensor and whole machine installation zero-bit regulate and during the reciprocating motion of actuator pistons bar, biography can be drivenSensor housing 7 rotates with four core assemblies relatively, so in order to prevent rotation from damaging core assembly,To four redundant displacement sensors, anti-torsion design need be carried out. Increase stage clip between push rod 1 and disk 2, thusEliminate axial gap, and make can relatively rotate between the push rod 1 that be connected with complete machine and disk 2, counteracting pressurized strutRotation during motion vertically.
Claims (2)
1. four redundant displacement sensors, is characterized in that: comprise push rod (1), disk (2), stage clip, padSheet, core assembly, coil block (4), drive end bearing bracket (6), rear end cap (5) and housing (7); Wherein, push rod (1)Being connected in the actuator of servo control mechanism, is displacement inputting apparatus; Disk (2) centre has circular hole and push rod (1) connectsConnect, the junction of push rod (1) and disk (2) is provided with the annular gap of 1.4 millimeters, and gap location is provided with stage clip;It is upper that four pull bars (3) are connected in disk (2) in parallel, makes each core assembly obtain identical displacement input quantity,Be provided with in the annular gap position of pull bar (3) and disk (2) junction core assembly installation site can be regulatedPad; Housing (7) is that diameter is 55 millimeters, and length is the cylindrical-shaped structure of 770 millimeters, in the middle of housing (7), opensFour diameters are had to be through holes of 8 millimeters; One group of coil block (4) and core assembly, line is placed in each through holeThe length of coil assembly is 746 millimeters; Core assembly is that length is 778 millimeters, the shaft-like knot that diameter is 5 millimetersStructure; Core assembly is made up of pull bar (3) and iron core (8) two parts, and pull bar (3) length is 515.5 millimeters, iron core(8) length is 276 millimeters, and pull bar (3) and iron core (8) are threaded connection, and reach is 13.5 millimeters; DrawThe housing end face that goes out pull bar (3) be provided with four corresponding with lead to the hole site in housing (7), internal diameter is the annulus of 8 millimetersThe drive end bearing bracket (6) of shape, is fixed on housing (7) inside by coil block (4) extruding; Another endface position of housing (7)Be provided with circular rear end cap (5), the wire in coil block (4) is spread out of.
2. a kind of four redundant displacement sensors as claimed in claim 1, is characterized in that: coil block (4)Have employed two-part structure, cell winding canoe adopts closely and arranges after 3 ~ 4 layers of primary coil, wholeIndividual winding portion sublevel arranges the compensation winding of secondary coil.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105659804B true CN105659804B (en) | 2014-04-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486785A (en) * | 2019-01-28 | 2020-08-04 | 拉季埃-菲雅克有限责任公司 | Redundant variable differential transformer with DC interface |
| CN111998873A (en) * | 2020-06-05 | 2020-11-27 | 中国航发贵州红林航空动力控制科技有限公司 | Be used for three redundant LVDT sensors of aerospace |
| CN113090472A (en) * | 2019-12-23 | 2021-07-09 | 新疆金风科技股份有限公司 | Displacement sensor, method for monitoring bolt looseness of tower barrel and wind generating set |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486785A (en) * | 2019-01-28 | 2020-08-04 | 拉季埃-菲雅克有限责任公司 | Redundant variable differential transformer with DC interface |
| CN111486785B (en) * | 2019-01-28 | 2023-10-27 | 拉季埃-菲雅克有限责任公司 | Redundant variable differential transformer with DC interface |
| CN113090472A (en) * | 2019-12-23 | 2021-07-09 | 新疆金风科技股份有限公司 | Displacement sensor, method for monitoring bolt looseness of tower barrel and wind generating set |
| CN111998873A (en) * | 2020-06-05 | 2020-11-27 | 中国航发贵州红林航空动力控制科技有限公司 | Be used for three redundant LVDT sensors of aerospace |
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| GR03 | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted |