CN105547122A - Zero micro-adjusting high-precision split type four-redundancy displacement sensor - Google Patents
Zero micro-adjusting high-precision split type four-redundancy displacement sensor Download PDFInfo
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- CN105547122A CN105547122A CN201410601433.2A CN201410601433A CN105547122A CN 105547122 A CN105547122 A CN 105547122A CN 201410601433 A CN201410601433 A CN 201410601433A CN 105547122 A CN105547122 A CN 105547122A
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Abstract
The invention belongs to the technical field of sensors, and specifically relates to a zero micro-adjusting high-precision split type four-redundancy displacement sensor for the measurement and feedback of the displacement of a servo mechanism and a solid carrier rocket servo structure system actuator rack. The displacement sensor comprises an upper resistance assembly (1), a lower resistance assembly (2), an upper brush holder assembly (3), and a lower brush holder assembly (4), the upper resistance assembly (1) is arranged at the central position of the upper side of a servo actuator shell, the lower resistance assembly (2) is arranged at the central position of the lower side of the servo actuator shell, the upper brush holder (3) and the lower brush holder (4) are arranged on a rack of a servo actuator plunger, the movement states of the upper brush holder assembly and the lower brush holder assembly and the plunger are completely consistent, the upper brush holder assembly (3) cooperates with the upper resistance assembly (1), and the lower brush holder assembly (4) cooperates with the lower resistance assembly (2).
Description
Technical field
The invention belongs to sensor technical field, be specifically related to the split type four redundant displacement sensors of a kind of trimming zero position joint high precision.
Background technology
Split type four redundant displacement sensors are widely used in strategic missile servo control mechanism and Solid Launch Vehicle servo structure system, supporting for servo actuator piston rod linear movement measuring and feedback, and its reliability directly affects performance and the reliability of servo-drive system.In order to the unfailing performance and zero-bit outgoing position characteristic that improve displacement transducer meet the requirement of Solid Launch Vehicle of new generation and strategic missile high reliability and security, from redundancy structure design, the design of zero-bit adjustment structure has re-started Curve guide impeller.
In order to meet the requirement in servo system structure space and performance index, adopt split type four redundancy structure designs, carry out measurement and the feedback of servo actuator rack displacement, reach high precision, null positions characteristic is good, quality is light, and the feature that volume is little, has a wide range of applications and promotion prospect in space flight servo-drive system.
Technical matters to be solved by this invention is, not enough for prior art, provides in order to servo control mechanism and the measurement of Solid Launch Vehicle servo structure system actuator rack displacement and the split type four redundant displacement sensors of trimming zero position joint high precision of feedback.
The technical solution adopted in the present invention is:
The split type four redundant displacement sensors of a kind of trimming zero position joint high precision, be located at servo actuator enclosure interior, comprise resistor assembly, lower resistor assembly, upper brush handle assembly and lower brush handle assembly, wherein, upper resistor assembly is installed on middle part on the upside of servo actuator housing, lower resistor assembly is installed on middle part on the downside of servo actuator housing, upper brush handle assembly and lower brush handle assembly are installed on the tooth bar of servo actuator plunger, completely the same with plunger motion state, upper brush handle assembly coordinates with on upper resistor assembly, lower brush handle assembly matches with lower resistor assembly.
Described upper resistor assembly has identical structure with lower resistor assembly, comprises skeleton, two resistive films, two buss and teflon insulation lines; Wherein two buss are parallel is fixed in the middle part of skeleton, article two, the outside of bus is respectively equipped with two resistive films, the two ends of every bar resistive film are provided with a soldering point, the two ends, centre position of every bar resistive film are provided with a soldering point, the two ends end of every bar bus is provided with a soldering point, is connected between soldering point by teflon insulation line.
Upper brush handle assembly and lower brush handle assembly are identical structure, comprise brush carrier, group brush assembly of electric, individual screw and individual large screw; Described brush assembly of electric comprises conducting strip brush and conducting strip, and brush is welded on conducting strip, and individual conducting strip is fixed on brush carrier by individual screw and a large screw, and each brush carrier is provided with group brush assembly of electric.
Not on one wire, it is regulatory function that structural design has zero-bit to screw hole opening on described conducting strip, regulates the position before and after conducting strip by the zero-bit adjustment hole on conducting strip, changes the relative position of brush on resistive film.
The invention has the beneficial effects as follows:
1. can realize split type four redundancy zero-bits is the feature that regulating guarantee null positions characteristic is good, improves split type four-way zero-bit not repeatability;
2. can realize two redundancy structures are connected, many redundancies electrically go up pattern in parallel and export, and improve the unfailing performance of displacement transducer;
3. can realize high precision to export, four redundant displacement sensors adopt linear type structure, print conductive plastic resistance film, improve the linearity of displacement transducer.
Accompanying drawing explanation
Fig. 1 is the split type four redundant displacement sensor construction schematic diagram of a kind of trimming zero position joint high precision;
Fig. 2 is resistor assembly schematic diagram;
Fig. 3 is brush handle assembly schematic diagram;
Fig. 4 is brush assembly of electric schematic diagram;
Fig. 5 is conducting strip structure figure;
In figure: 1. go up brush handle assembly 4. times large screws of brush handle assembly 5. skeleton 6. teflon insulation line AF-250A7 × 0.127. resistive film 8. bus 9. brush carrier 10. brush assembly of electric 11. screw 12. on resistor assembly 2. times resistor assemblies 3..
Embodiment
Below in conjunction with drawings and Examples, one provided by the invention is introduced:
The split type four redundant displacement sensors of a kind of trimming zero position joint high precision, be located at servo actuator enclosure interior, comprise resistor assembly 1, lower resistor assembly 2, upper brush handle assembly 3 and lower brush handle assembly 4, wherein, upper resistor assembly 1 is installed on middle part on the upside of servo actuator housing, lower resistor assembly 2 is installed on middle part on the downside of servo actuator housing, upper brush handle assembly 3 and lower brush handle assembly 4 are installed on the tooth bar of servo actuator plunger, completely the same with plunger motion state, upper brush handle assembly 3 coordinates with on upper resistor assembly 1, lower brush handle assembly 4 matches with lower resistor assembly 2.
Described upper resistor assembly 1 has identical structure with lower resistor assembly 2, comprises skeleton 5, two resistive films 7, two buss 8 and teflon insulation line 6; Wherein two buss 8 are parallel is fixed in the middle part of skeleton 5, article two, the outside of bus is respectively equipped with two resistive films 7, the two ends of every bar resistive film 7 are provided with 2 soldering points, the two ends, centre position of every bar resistive film 7 are provided with 1 soldering point, the two ends end of every bar bus is provided with 1 soldering point, is connected between soldering point by teflon insulation line 6.
Upper brush handle assembly 3 is identical structure with lower brush handle assembly 4, comprises brush carrier 9,2 groups of brush assembly of electric 10,2 screws 11 and 4 large screws 12; Described brush assembly of electric 10 comprises conducting strip brush 13 and conducting strip 14, and brush 13 is welded on conducting strip 14, and 1 conducting strip 14 is fixed on brush carrier 9 by 1 screw 11 and 2 large screws 12, and each brush carrier 9 is provided with 2 groups of brush assembly of electric 10.
Not on one wire, it is regulatory function that structural design has zero-bit to screw hole opening on described conducting strip 14, regulates the position before and after conducting strip by the zero-bit adjustment hole on conducting strip, changes the relative position of brush on resistive film.
As shown in Figure 1, four redundancy angular displacement sensors are by upper resistor assembly 1, lower resistor assembly 2, upper brush handle assembly 3, lower composition such as brush handle assembly 4 grade, the present invention, primarily of two groups of resistor assemblies and two groups of brush assembly of electric composition, often organizes resistor assembly and brush assembly of electric and can apply separately and form two redundant displacement sensor, also can two groups apply composition triple redundance or four redundant displacement sensors simultaneously.Resistor assembly 1 and resistor assembly 2 are installed on middle part, servo actuator housing upper and lower both sides.The mode that two resistor elements can stroke structure be connected is connected, four passages can be connected side by side on electrically, stroke electrically on independence, improve the reliability of displacement transducer, reach Redundancy Design object.
As shown in Figure 2, resistor assembly by skeleton 5, teflon insulation line AF-250A7 × 0.122, resistive film 6 and conduction 7 compositions.Skeleton 5 is processed by polyimide laminate YB-20, resistive element forms by printing conductive plastics printing, and bus is set up specially for drawing signal, for avoiding using the wire of motion to draw signal, at the rectangular conductive plastics band of resistive element other stickup printing one, as bus.All extension line rivet places add the reliability of extension line by extension line after soldering.Resistive element improves the wearing quality of sensor and the homogeneity of resistive element resistance after adopting and printing conductive plastics, for the quarter of repairing of later stage sensor provides good basis, by printing the shaping resistive element of conductive plastics, the linearity of sensor is within 0.6%, substantially increase the linearity of displacement transducer, traditional electrical resistance body is formed by resistor fluid spray on skeleton.Resistor fluid is the potpourri of resin and graphite, resin and graphite add mixed solvent by certain formula and become satisfactory conduction liquid through ball milling, then, be sprayed on the skeleton that insulating material makes with spraying process, through operations such as repeatedly spraying, drying and polymerizations, make resistive element, in order to make the stable performance of resistive element, resistive element also needs through tests such as electricity, temperature agings.The resistive element that spray becomes, due to resistance skewness, also will, through linearly repairing quarter, finally make the linearity reach the requirement of about 1%.
As shown in Figure 3, brush handle assembly is by brush carrier 9, and brush assembly of electric 10, screw 11, large screw 12 forms, and brush handle assembly is arranged on the tooth bar of servo actuator plunger, completely the same with plunger motion state.The material of brush carrier is soluble polyimide Moulding powder moulded plastic YS-20.Brush is made up of conducting strip 14 and brush wires 13 as shown in Figure 4, and conducting strip material is beryllium-bronze, conducting strip 14 is welded with brush wires 13, and brush wires 13 material is palladium iridium alloy silk, and brush is fastened on brush carrier by screw 11 and large screw 12.Brush has wear-resisting and high resilience, when vibrated, impact, can reliably work, stable output.
As shown in Figure 5, it is regulatory function that the structural design of conducting strip 14 has zero-bit, can after the brush handle assembly installation shown in the brush assembly of electric shown in Fig. 4 and Fig. 3, power up pairing debugging, the position before and after conducting strip is regulated by the zero-bit adjustment hole on conducting strip, change the relative position of brush on resistive film, realize triple channel zero-bit output-consistence, improve the zero-bit output characteristics of displacement transducer, improve displacement transducer test performance, four traditional redundant displacement sensors can not ensure the consistance of sensor four-way zero-bit in structural design, from Sensor Output Characteristic, four redundancies truly can not be realized, complete machine algorithm votes by a show of hands algorithm and is lost essential meaning, after changing conducting strip structure design, although two of sensor passages are on a skeleton, but independently can regulate the front and back position of respective conducting strip, realize transducer zeroing output-consistence, the design of this zero-bit governor motion obtains flight test examination on correlated strategy model, its performance obtains verification experimental verification.
Claims (4)
1. the split type four redundant displacement sensors of trimming zero position joint high precision, be located at servo actuator enclosure interior, it is characterized in that: comprise resistor assembly (1), lower resistor assembly (2), upper brush handle assembly (3) and lower brush handle assembly (4), wherein, upper resistor assembly (1) is installed on middle part on the upside of servo actuator housing, lower resistor assembly (2) is installed on middle part on the downside of servo actuator housing, upper brush handle assembly (3) and lower brush handle assembly (4) are installed on the tooth bar of servo actuator plunger, completely the same with plunger motion state, upper brush handle assembly (3) coordinates with on upper resistor assembly (1), lower brush handle assembly (4) is matched with lower resistor assembly (2).
2. the split type four redundant displacement sensors of a kind of trimming zero position joint high precision according to claim 1, it is characterized in that: described upper resistor assembly (1) has identical structure with lower resistor assembly (2), comprise skeleton (5), two resistive films (7), two buss (8) and teflon insulation lines (6); Wherein two buss (8) are parallel is fixed on skeleton (5) middle part, article two, the outside of bus is respectively equipped with two resistive films (7), the two ends of every bar resistive film (7) are provided with 2 soldering points, the two ends, centre position of every bar resistive film (7) are provided with 1 soldering point, the two ends end of every bar bus is provided with 1 soldering point, is connected between soldering point by teflon insulation line (6).
3. the split type four redundant displacement sensors of a kind of trimming zero position joint high precision according to claim 1, it is characterized in that: upper brush handle assembly (3) is identical structure with lower brush handle assembly (4), comprises brush carrier (9), 2 groups of brush assembly of electric (10), 2 screws (11) and 4 large screws (12); Described brush assembly of electric (10) comprises conducting strip brush (13) and conducting strip (14), brush (13) is welded on conducting strip (14), 1 conducting strip (14) is fixed on brush carrier (9) by 1 screw (11) and 2 large screws (12), and each brush carrier (9) is provided with 2 groups of brush assembly of electric (10).
4. the split type four redundant displacement sensors of a kind of trimming zero position joint high precision according to claim 3, it is characterized in that: the screw hole opening on conducting strip (14) is not on one wire, it is regulatory function that structural design has zero-bit, regulate the position before and after conducting strip by the zero-bit adjustment hole on conducting strip, change the relative position of brush on resistive film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410601433.2A CN105547122A (en) | 2014-10-31 | 2014-10-31 | Zero micro-adjusting high-precision split type four-redundancy displacement sensor |
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| CN201410601433.2A CN105547122A (en) | 2014-10-31 | 2014-10-31 | Zero micro-adjusting high-precision split type four-redundancy displacement sensor |
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| CN105547122A true CN105547122A (en) | 2016-05-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044386A (en) * | 2019-04-15 | 2019-07-23 | 成都宏明电子股份有限公司 | A kind of brush structure component on angular displacement sensor |
| CN110112867A (en) * | 2019-04-12 | 2019-08-09 | 北京精密机电控制设备研究所 | A kind of electromechanical actuator zero-bit regulating device |
| CN114034241A (en) * | 2022-01-11 | 2022-02-11 | 四川永星电子有限公司 | Precise coaxial quadruple angular displacement sensor |
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| CN201047751Y (en) * | 2007-04-06 | 2008-04-16 | 胡敬礼 | Novel straight-line resistor type displacement sensor |
| US20110121817A1 (en) * | 2009-11-10 | 2011-05-26 | Abb Technology Ag | Method for increasing the availability of displacement/position measuring systems on the basis of potentiometers with a slider tap (iii) |
| CN103090785A (en) * | 2011-10-28 | 2013-05-08 | 北京精密机电控制设备研究所 | Integrated triple redundancy angle displacement measurement device |
| CN103673859A (en) * | 2013-12-19 | 2014-03-26 | 张国政 | Displacement sensor |
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2014
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Patent Citations (4)
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| CN201047751Y (en) * | 2007-04-06 | 2008-04-16 | 胡敬礼 | Novel straight-line resistor type displacement sensor |
| US20110121817A1 (en) * | 2009-11-10 | 2011-05-26 | Abb Technology Ag | Method for increasing the availability of displacement/position measuring systems on the basis of potentiometers with a slider tap (iii) |
| CN103090785A (en) * | 2011-10-28 | 2013-05-08 | 北京精密机电控制设备研究所 | Integrated triple redundancy angle displacement measurement device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112867A (en) * | 2019-04-12 | 2019-08-09 | 北京精密机电控制设备研究所 | A kind of electromechanical actuator zero-bit regulating device |
| CN110044386A (en) * | 2019-04-15 | 2019-07-23 | 成都宏明电子股份有限公司 | A kind of brush structure component on angular displacement sensor |
| CN110044386B (en) * | 2019-04-15 | 2024-01-16 | 成都宏明电子股份有限公司 | Brush structure assembly for angular displacement sensor |
| CN114034241A (en) * | 2022-01-11 | 2022-02-11 | 四川永星电子有限公司 | Precise coaxial quadruple angular displacement sensor |
| CN114034241B (en) * | 2022-01-11 | 2022-03-22 | 四川永星电子有限公司 | Precise coaxial quadruple angular displacement sensor |
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Application publication date: 20160504 |