CN103090785A - Integrated triple redundancy angle displacement measurement device - Google Patents
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- CN103090785A CN103090785A CN2011103329337A CN201110332933A CN103090785A CN 103090785 A CN103090785 A CN 103090785A CN 2011103329337 A CN2011103329337 A CN 2011103329337A CN 201110332933 A CN201110332933 A CN 201110332933A CN 103090785 A CN103090785 A CN 103090785A
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Abstract
The invention belongs to the technical field of angle displacement measurement, in particular to an integrated triple redundancy angle displacement measurement device, and aims at overcoming the defects in the prior art and meeting the requirements for the measurement of a pivot angle of a spray pipe of a novel servo system and feedback control. The integrated triple redundancy angle displacement measurement device comprises a displacement sensor assembly (1), an upper bolt assembly (2-1), a lower bolt assembly (2-2), an adjusting bolt (3), an upper support lug (4) and a lower support lug (5). The adjusting bolt (3) is provided with a left thread and a right thread. The displacement sensor assembly (1) is a potentiometer type displacement sensor made of high-precision conductive plastics. Three resistor assemblies (12) are evenly distributed on three surfaces of a base (11), and electric brushes corresponding to the resistor assemblies (12) are evenly distributed on three surfaces of a brush holder assembly (15). The brush holder assembly (15) is fixed on a connecting rod (14) through shaft end screws. The integrated triple redundancy angle displacement measurement device has the advantages that an integrated triple redundancy design is adopted so that the adaptive capacity to the environment is high, the service life is long, the requirements for the highly reliable angle displacement measurement of the novel servo system and feedback are met according to various tests and evaluations, and the integrated triple redundancy angle displacement measurement device has great significance for improving the reliability of the system, thereby having great popularization value.
Description
Technical field
The invention belongs to the angle displacement measurement technical field.
Background technology
In wobble servo mechanism, need to measure the pendulum angle of swing component, the present invention is applied to the measurement of swing component, for example, the measurement of angle of cant in the actuating unit that the jet pipe of engine swings with respect to engine, improvement along with engine jet pipe wobble servo mechanism, the servo control mechanism compact conformation, integrated level is high, the environment for use inclement condition, determined that supporting sensor design structure is smaller and more exquisite, more high temperature resistant, high pressure, strong vibration impact, performance index be higher, the characteristic such as dynamic response is better.Simultaneously in order to satisfy the demand that totally servo-drive system is realized sinking angle real-Time Compensation under engine, the angle of cant signal leading servo closed control system that angle displacement measuring device need to be recorded, therefore servo-drive system proposes new requirements at the higher level to the servo displacement transducer of matching used special type: precision is higher, reliability is higher, stability is better, the life-span is longer.Empirical tests, existing sensor technology can not adapt to the development needs fully.
In prior art, domestic (comprising our unit), angle displacement measuring device used was split type, and reliability is up to two remainings.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, in order to satisfy measurement and the FEEDBACK CONTROL needs of Novel servo system angle of cant, designed novel integrated triple redundance angle displacement measuring device.
The technical scheme that realizes purpose of the present invention is: integral type triple redundance angle displacement measuring device, be used for to measure the pendulum angle of wobble servo mechanism swing component, wherein, comprising: displacement sensor component, upper bolt assembly, lower bolt assembly, adjusting bolt, upper journal and down journal; Integral type triple redundance angle displacement measuring device is connected to fixture in wobble servo mechanism by upper journal, is installed to swing component in wobble servo mechanism by down journal;
Upper bolt assembly and lower bolt assembly are connected respectively down journal by oscillating bearing and are connected with upper journal, lower bolt assembly is connected with slip cap threadably, and pull bar is fixed in the end cap of slip cap by set nut;
Upper bolt assembly is connected with displacement sensor component by adjusting bolt, and adjusting bolt two ends are the left and right screw thread, the middle breach of using for back-up wrench, and upper bolt assembly is connected by right-and-left threaded cooperation with adjusting bolt with displacement sensor component;
Displacement sensor component, comprise: 3 resistor assemblies, brush handle assembly, seat, on 3 uniform 3 present faces of resistor assembly, spray one resistive film and the bus corresponding with it on each resistor assembly, the brush corresponding with it is distributed on three faces of brush handle assembly, is fixed on a side of pull bar by lock screw with the brush handle assembly of brush.
A kind of integral type triple redundance angle displacement measuring device as above wherein, between described slip cap and displacement sensor component, arranges 2 places anti-attrition circle.
The invention has the advantages that: measurement and FEEDBACK CONTROL needs in order to satisfy new model servo-drive system angle of cant, adopted the triple redundance design, the diagonal displacement sensor has carried out the integral type design proposal on the basis that guarantees physical dimension.This integral type triple redundance angle displacement measuring device form is triple redundance orthoscopic conductive plastic potentiometer, adopt independently-powered on electrical design and signal output, adopt anti-attrition circle in two places to improve integral rigidity and the reliability of sensor on structural design, and design zero-bit regulating device, by being connected of oscillating bearing and upper and lower journal stirrup realization and engine.That the harness of integral type triple redundance angle displacement measurement has is simple in structure, easy for installation, long service life (more than 1,000,000 times), reliability are high, good stability, linearity advantages of higher.
This angle displacement measuring device has adopted high-accuracy conductive plastics displacement transducer.No longer only for the measurement that is used for the jet pipe pendulum angle, also will participate in the control of whole servo-drive system simultaneously in servo control mechanism.
Integral type triple redundance angle displacement measuring device is that measurement and the system of certain model I level, II level angle of cant controls feedback unit, the internal displacement sensor is selected triple redundance orthoscopic conductive plastic potentiometer, its resistor disc is resistance and the termination silver paste that will prepare in advance by print process, leak to print on substrate by silk screen by the resistive element figure and form, the bus corresponding with it is to form by the corrosion surface Copper Foil in the printed board process, is used for drawing of output signal.Apply respectively positive and negative direct supply at resistive film two ends, in the zero-bit position, center tap (being power supply ground) is set simultaneously, brush slides on resistive film, realizes the function of measurement angle of cant.Output signal, positive-negative power and ground connection are guided to an end of resistor disc by track, be connected by the conductive silver band between center tap and resistive film, and is in the past more safer, reliable by the lead-out mode of rivet and wire.
This product advance has been to adopt the designing technique of three remainings, integral type, adopts first high precision conductive plastic potentiometer method for designing simultaneously, has improved global reliability.
The present invention is mainly used in the measurement of the servo-drive system jet pipe angle of pitch and lower sinking angle, and the participation system feedback is controlled, its characteristics: simple in structure, easy for installation, long service life (more than 1,000,000 times), reliability are high, effectively improve mission life and the reliability of new model servo-drive system, have great military significance and promotional value.
The present invention is compared with prior art:
1) it is little that compact conformation, zero-bit do not overlap voltage
Integral type triple redundance angle displacement measuring device is evenly distributed on three resistor assemblies on three faces of seat, draws respectively use on electric.By regulating the installation site of three resistor assemblies on housing, guarantee that its zero-bit misalignment is not more than 20mV;
2) the simplification tested object model of project proposition, 2 angle displacement measuring devices of orthogonal configuration, being installed on pendulosity jet pipe " pivot angle variation " affects the position of test error minimum, measure the method for jet pipe thrust vectoring pivot angle, solved thrust vectoring angular displacement in engines ground servo-drive system performance and frequency characteristic test (pitching pivot angle, driftage pivot angle) and measured a difficult problem.
3) integral type triple redundance angle displacement measuring device adapt to high temperature (moment is greater than 1000 ℃), shake by force, the harsh and unforgiving environments condition test such as large impact, have high reliability.
4) be designed with self-regulation device, satisfy zero-bit and regulate needs, overcome the shortcoming that original angle displacement measuring device easily becomes flexible under strong vibration, this measurement mechanism rotates dirigibility, eliminated assemblage gap and designed without the lagged displacement sensor, improve the dynamic perfromance of product, improved measuring accuracy.
5) adopt the triple redundance design to improve product reliability.
6) resistive film of employing conductive plastics has improved the linearity of product, calculates by GB to be better than 0.1%
Innovation point:
1. adopt the conductive plastic potentiometer method for designing
2. angle displacement measuring device adopts the design of integral type triple redundance first
3. adaptive capacity to environment is strong, the life-span is high (can reach 1,000,000 times)
4. integrated brush notch cuttype cutting technique
5. new material is selected.
Summary: above technical scheme has satisfied the highly reliable angle displacement measurement of Novel servo system and feedback needs through every test examination, and is significant for the reliability that improves system, thereby has great promotional value.
Description of drawings
Fig. 1 integral type triple redundance angle displacement measuring device structural representation;
Fig. 2 is the displacement sensor component structural representation;
Fig. 3 brush distribution schematic diagram (axial section);
Fig. 4 brush distribution schematic diagram.
1. sensor module; 2. bolt assembly; 3. adjusting bolt; 4. upper journal; 5. down journal; 6. anti-attrition circle; 7 slip caps; 8. cable; 11. seat; 12. resistor assembly; 13. brush; 14. pull bar; 15. brush handle assembly.
Embodiment
The present invention is described further below in conjunction with the drawings and specific embodiments:
Integral type triple redundance angle displacement measuring device comprises: displacement sensor component 1, bolt assembly 2 (upper bolt assembly 2-1, lower bolt assembly 2-2), adjusting bolt 3, upper journal 4 and down journal 5.Be used for measuring the pendulum angle of jet pipe, integral type triple redundance angle displacement measuring device is connected to the engine flange dish by upper journal 4, is installed to the ring stiffener of jet pipe by down journal 5.Its concrete structure is seen Fig. 1.
Upper bolt assembly 2-1 and lower bolt assembly 2-2 by oscillating bearing are connected with upper journal respectively, down journal 5 connects, lower bolt assembly 2-2 is threaded connection on the slip cap 7 of displacement transducer assembly 1, is fixed in the end cap of slip cap 7 by the end of set nut with pull bar 14 simultaneously;
Upper bolt assembly 2-1 is connected with displacement sensor component 1 by adjusting bolt 3, adjusting bolt 3 is that two ends are the left and right screw thread, the breach that the centre is used for back-up wrench, upper bolt assembly 2-1 is connected with displacement sensor component and is connected by right-and-left threaded cooperation with adjusting bolt 3, and is undertaken fastening by the left and right nut; After unclamping the left and right set nut, can realize the adjusting to whole angle displacement measuring device installation site by rotation adjusting bolt 3, namely realize the zero-bit adjusting.
Displacement sensor component 1 is comprised of 3 resistor assemblies 12, brush handle assembly 15, seat 11 etc.On three uniform three faces of present 11 of resistor assembly 12, each resistor assembly 12 spray one resistive film and bus corresponding with it, the brush 13 corresponding with it is distributed on three faces of brush handle assembly 15,
Each brush moves by pull bar across resistive film and bus, drives the relative motion of brush and resistor assembly, realizes channel measurement.
Fig. 2 is seen in its distribution.
Jet pipe swings, the brush 13 (being installed on connecting rod 14) that drives displacement sensor component moves on corresponding resistor film and bus, thereby make the jet pipe hunting the angular displacement sensor output voltage change on, can calculate the pivot angle of jet pipe according to the output voltage values of angular displacement sensor and the space mounting on jet pipe thereof and physical dimension.
Upper bolt assembly 2-1 and lower bolt assembly 2-2 by oscillating bearing are connected with upper journal respectively, down journal 5 connects, oscillating bearing provides the degree of freedom of rotation, make integral type triple redundance angle displacement measuring device to rotate along with jet pipe, and, the phase place hysteresis of having eliminated assemblage gap and having caused thus.
Down journal and zero-bit regulating device on designing as requested in the jet pipe finite space satisfy jet pipe measurement and testing laboratory's servo-drive system Performance Characteristics test needs, can carry out easily zero-bit and regulate.
In realizing process of the present invention, have following characteristics:
1) improve technological process, the decrease production cycle has also been improved reliability
Sensor resistance sheet matrix material selection YB-20 type polyimide layer covers copper coin, polyimide is a kind of novel aromatic heterocycle superpolymer, it has the combination properties such as excellent machinery, dielectric, high-low temperature resistant, radiation hardness, is widely used in the departments such as aerospace, artificial satellite, atomic energy industry and defence and military.
According to existing product structure feature and request for utilization, adopt the manufacture method of the most suitable conductive plastics sensor resistance of print process moulding resistive film film, and the print process moulding shortened the resistive film production cycle, improved the production efficiency of product.
Adopt linearity to repair lithography, by resistive film pointwise (being generally 2mm 1 point) is repaiied quarter, just reduce the conductive cross-sectional area of this point lower than standard value, thereby increase resistance.Make the resistance value of every more level off to the standard electric resistance, realize that the resistive film output voltage values is linear change with sensor electrical brush displacement amount, thereby the linear sensor error precision is controlled in 0.3%, satisfy the requirement of product service precision.
2) improve frame mode and balancing controls
(at first separately make by the connection support section, the Sensor section that comprise upper down journal with the split-type structural in original technology for integral type triple redundance angle displacement measuring device, then assemble when mounted) be improved to integral structure, be connected with engine with upper down journal by the up and down bolt assembly, abandoned the method for length of in the past regulating with mounting groove by the down journal set bolt, require down journal to have certain-length in said method, and be furnished with cushion block and can carry out the zero-bit adjusting; And in the present invention specifically; Newly design adjusting bolt, can regulate in the zero-bit of the basic adjusted angle displacement measuring device of not pulling down sensor the impact of having avoided the sensor repeated disassembled and assembled to bring.
for reliability and the environmental suitability that improves angle displacement measuring device, design Novel sliding cover on structure, realize that by two places anti-attrition circle sensor movement freely, wherein anti-attrition circle in a place is contained in the slip cap inwall, another place's anti-attrition circle is contained on seat, anti-attrition circle in two places has two place's strong points when slip cap is slided on sensor main body, angle displacement measuring device is in motion or when affected by environment, slip cap plays position-limiting action to the transducer transversely amplitude of oscillation, increased the whole lateral rigidity of sensor, reduced under the jet pipe resonant condition infringement that may cause sensor pull bar and brush.
New structural design can make angle displacement measuring device bear and double the oscillation intensity of model in the past, and the performance index after test are qualified, and various functions is normal, satisfies system's request for utilization.
3) extend the measure of product work life-span
After the conductive plastics sensor was completed 1,000,000 durability tests on request, the test sensor linearity all increased to 0.9～1.1% left and right, but used function normal, and the high reliability that sensor is described is guaranteed.After decomposition, after checking that resistive film is found 1,000,000 durability tests, there is obvious brush running orbit on the resistive film surface, and this problem directly affects the linear sensor precision, causes the resistive film local linear to increase.By analysis, the key factor of this problem is the surperficial burr that is difficult to remove that exists of band line excision forming brush brush silk that sensor uses, and burr is reciprocating friction on resistive film, thereby makes the local resistance of resistive film become large, and it is large that linearity becomes thereupon.Therefore emphasis band line excision forming brush is brushed a silk deburring quality in the postorder production run, increases to reach brush joint-cutting size, and the convenient burr that stays after brush cuts of removing reduces brush friction to the damage of resistive film with this.
Claims (2)
1. integral type triple redundance angle displacement measuring device, be used for to measure the pendulum angle of wobble servo mechanism swing component, it is characterized in that: comprising: displacement sensor component (1), upper bolt assembly (2-1), lower bolt assembly (2-2), adjusting bolt (3), upper journal (4) and down journal (5); Integral type triple redundance angle displacement measuring device is connected to fixture in wobble servo mechanism by upper journal (4), is installed to swing component in wobble servo mechanism by down journal (5);
Upper bolt assembly (2-1) is connected 4 with upper journal with lower bolt assembly (2-2) respectively by oscillating bearing), down journal (5) connects, lower bolt assembly (2-2) is connected 7 with slip cap threadably) connect, pull bar (14) is fixed in the end cap of slip cap (7) by set nut;
Upper bolt assembly (2-1) is connected with displacement sensor component (1) by adjusting bolt (3), adjusting bolt (3) two ends are the left and right screw thread, the breach that the centre is used for back-up wrench, upper bolt assembly (2-1) is connected 1 with displacement sensor component) be connected by right-and-left threaded cooperation with adjusting bolt (3);
Displacement sensor component (1), comprise: 3 resistor assemblies (12), brush handle assembly (15), seat (11), on 3 faces of 3 resistor assemblies (12) uniform present (11), upper spray one resistive film of each resistor assembly (12) and the bus corresponding with it, the brush corresponding with it (13) is distributed on three faces of brush handle assembly (15), is fixed on a side of pull bar (14) by lock screw with the brush handle assembly (15) of brush (13).
2. a kind of integral type triple redundance angle displacement measuring device as claimed in claim 1, is characterized in that: between described slip cap (7) and displacement sensor component (1), 2 places anti-attrition circle (6) is set.
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| CN201110332933.7A CN103090785B (en) | 2011-10-28 | 2011-10-28 | Integral type triple redundancy angle displacement measurement device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279948A (en) * | 2013-07-12 | 2015-01-14 | 北京精密机电控制设备研究所 | Split and double-redundancy arc-shaped angular displacement sensor |
| CN104279944A (en) * | 2013-07-12 | 2015-01-14 | 北京精密机电控制设备研究所 | Split and multi-redundancy linear displacement sensor |
| CN104279943A (en) * | 2013-07-12 | 2015-01-14 | 北京精密机电控制设备研究所 | Series-parallel connection triple-redundancy angular displacement sensor |
| CN104567649A (en) * | 2013-10-22 | 2015-04-29 | 北京精密机电控制设备研究所 | Integrated triply-redundant angular displacement sensor |
| CN105547122A (en) * | 2014-10-31 | 2016-05-04 | 北京精密机电控制设备研究所 | Zero micro-adjusting high-precision split type four-redundancy displacement sensor |
| CN105627908A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | Composite conductive plastic triple-redundancy high-precision angle displacement sensor |
| CN105627906A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | Miniaturized high-reliability one-piece triple-redundancy angular displacement sensor |
| CN105629027A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | High-reliability high-wear-resistance conductive plastic potentiometer |
| CN107907082A (en) * | 2017-10-27 | 2018-04-13 | 北京精密机电控制设备研究所 | A kind of mechanism that can eliminate displacement sensor installation gap |
| CN109373960A (en) * | 2018-12-05 | 2019-02-22 | 兰州飞行控制有限责任公司 | A kind of redundance angular displacement detecting device and installation method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279948A (en) * | 2013-07-12 | 2015-01-14 | 北京精密机电控制设备研究所 | Split and double-redundancy arc-shaped angular displacement sensor |
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| CN104279943A (en) * | 2013-07-12 | 2015-01-14 | 北京精密机电控制设备研究所 | Series-parallel connection triple-redundancy angular displacement sensor |
| CN104279943B (en) * | 2013-07-12 | 2017-07-18 | 北京精密机电控制设备研究所 | A kind of connection in series-parallel triple redundance angular displacement sensor |
| CN104567649A (en) * | 2013-10-22 | 2015-04-29 | 北京精密机电控制设备研究所 | Integrated triply-redundant angular displacement sensor |
| CN105627906A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | Miniaturized high-reliability one-piece triple-redundancy angular displacement sensor |
| CN105627908A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | Composite conductive plastic triple-redundancy high-precision angle displacement sensor |
| CN105629027A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | High-reliability high-wear-resistance conductive plastic potentiometer |
| CN105547122A (en) * | 2014-10-31 | 2016-05-04 | 北京精密机电控制设备研究所 | Zero micro-adjusting high-precision split type four-redundancy displacement sensor |
| CN105627908B (en) * | 2014-10-31 | 2018-07-27 | 北京精密机电控制设备研究所 | A kind of composite conductive plastic triple redundance high-precision angular displacement sensor |
| CN105627906B (en) * | 2014-10-31 | 2019-01-08 | 北京精密机电控制设备研究所 | A kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization |
| CN107907082A (en) * | 2017-10-27 | 2018-04-13 | 北京精密机电控制设备研究所 | A kind of mechanism that can eliminate displacement sensor installation gap |
| CN109373960A (en) * | 2018-12-05 | 2019-02-22 | 兰州飞行控制有限责任公司 | A kind of redundance angular displacement detecting device and installation method |
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