CN105627906A - Miniaturized high-reliability one-piece triple-redundancy angular displacement sensor - Google Patents
Miniaturized high-reliability one-piece triple-redundancy angular displacement sensor Download PDFInfo
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- CN105627906A CN105627906A CN201410601770.1A CN201410601770A CN105627906A CN 105627906 A CN105627906 A CN 105627906A CN 201410601770 A CN201410601770 A CN 201410601770A CN 105627906 A CN105627906 A CN 105627906A
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Abstract
The invention belongs to the technical field of sensors, and specifically relates to a miniaturized high-reliability one-piece triple-redundancy angular displacement sensor satisfying design difficulties of novel reliability and the high qualified rate and guaranteeing the structure dimension. The miniaturized high-reliability one-piece triple-redundancy angular displacement sensor comprises a brush shaft assembly (1), an upper cover plate (2), a lower cover plate (3), an upper resistor ring assembly (4) and a lower resistor ring assembly (5); and the lower resistor ring assembly (5) is disposed on the lower cover plate (3), the upper resistor ring assembly (4) is disposed on the lower resistor ring assembly (5), the upper cover plate (2) is disposed at the upper end of the upper resistor ring assembly (4), and the brush shaft assembly (1) passes through the upper cover plate (2) and the lower cover plate (3) and is fixed to the upper cover plate (2) and the lower cover plate (3) respectively through bearings; and long screws pass through the upper cover plate (2), the lower cover plate (3), the upper resistor ring assembly (4) and the lower resistor ring assembly (5) to perform fixations.
Description
Technical field
The invention belongs to sensor technical field, be specifically related to a kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization.
Background technology
Novel servo system swing offset measurement and feedback displacement transducer adopt integral structure, adopt electric resistance partial pressure principle to be operated, and mechanical pendulum angle signal is converted to the signal of telecommunication and exports to controller, it is achieved divide and lead a grade electrical servo closed loop control.
Along with novel project verification development, require servo control mechanism compact conformation, integrated level is high, and can adapt to severe working environment, simultaneously point lead grade servo control mechanism close the measurement with loop and feedback requirements to meet, therefore matching used extraordinary servo bit displacement sensor is proposed new requirements at the higher level by servo control mechanism: structure is smaller and more exquisite, reliability is higher, environmental suitability is better, qualification rate is higher.
This displacement transducer have employed two ring microminiature designs in structural design, reduces the weight and volume of sensor; Current potential meter shaft and brush installed surface are integral type structure, and intensity is high, decrease because installing the weak link produced; The design optimization brush structure of product, meets the more harsh temperature of this system and mechanical environment condition requirement; Novel resistor ring structure improves insulating properties and the reliability of product, meets Project R&D demand.
Summary of the invention
The technical problem to be solved is, not enough for prior art, it is provided that meet novel reliability, design challenges that qualification rate is high, it is ensured that the highly reliable integral type triple redundance angular displacement sensor of a kind of miniaturization of physical dimension.
The technical solution adopted in the present invention is:
A kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization, including brush shaft assembly, upper cover plate, lower cover, upper resistance ring assembly and lower resistance ring assembly, lower resistance ring assembly is located on lower cover, upper resistance ring assembly is located on lower resistance ring assembly, resistance ring assembly upper end is located at by upper cover plate, brush shaft assembly, through upper cover plate and lower cover, fixes with upper cover plate and lower cover respectively through bearing; Long spiro nail is fixed through upper cover plate, lower cover, upper resistance ring assembly and lower resistance ring assembly.
Described brush shaft assembly includes axle, 3 felt pads, 6 set insulating particles, 6 brushes, straight pin and 6 screws, its axis relatively butt end is provided with 3 brush installed surfaces, each brush installed surface is provided with a felt pad, each felt pad is provided with 2 brushes, brush, felt pad and brush installed surface are fixed by each brush by 1 screw, and each screw is cased with 1 set insulating particle.
Described upper balk ring assembly includes skeleton A, resistive film A, bus A, A group anode, A group switching centre tap, A group negative terminal, B group anode, B group switching centre tap, B group negative terminal and two C group outputs, wherein resistive film A spray is on the inner arc surface of skeleton A, and bus A is fixed on ring in skeleton A body by beryllium-bronze sheet by epoxyn; Described A group anode is located at 12 positions on skeleton A, 1 position on skeleton A is located in A group switching centre tap, A group negative terminal is located at 2 positions on skeleton A, B group anode is located at 4 positions on skeleton A, the 5 o'clock position on skeleton A is located in B group switching centre tap, B group negative terminal (49) is located at 6 positions on skeleton A, and two C group outputs are respectively arranged on and 10 positions on skeleton A at 8
Described lower balk ring assembly includes skeleton B, 2 groups of resistive film B, 2 groups of bus B, C group anodes, C group switching centre tap, C group negative terminal, 2 outputs of A group, 2 B group outputs, wherein resistive film B spray is on the inner arc surface of skeleton B, and bus B is fixed on ring in skeleton B body by beryllium-bronze sheet by epoxyn; C group anode is located at 11 positions on skeleton B, 12 positions on skeleton B are located in C group switching centre tap, C group negative terminal is located at 1 position on skeleton B, and the output of 2 A groups is respectively arranged on 3 on skeleton B and skeleton B upper and 9 positions are located in 5 positions, 2 B group outputs at 7.
Tri-groups of circuit of A, B, C often organize the anode of circuit, negative terminal and centre cap and is resistive film position, often organize the output of circuit and the sticking positions of bus; The resistive film on each road and bus are in the correspondence position of upper and lower resistance ring.
The invention has the beneficial effects as follows:
1. triple redundance design makes compact conformation, weight saving;
2. potentiometer rotating shaft and brush installed surface are integral type structure, and intensity is high, decrease because installing the weak link produced;
3. brush brush filament width adopts two ends width, middle narrow structure, improves its vibration-resistant property on the guarantee elastic basis of brush;
4. circuit distribution broken traditional set of circuits can only restriction on a resistance ring, increase the distance between each electrical point, be greatly improved in insulating properties, make product once to assemble qualified, do not have repeated disassembled and assembled phenomenon. Improve conforming product rate;
5., owing to resistance ring and brush have employed new structural design, need not connect by wire between the bus of circuit and resistive film often organizing, improve the reliability of product.
Accompanying drawing explanation
Fig. 1 is miniaturization highly reliable integral type triple redundance angular displacement sensor schematic diagram;
Fig. 2 is brush shaft assembly structure chart;
Fig. 3 is a powering up balk ring structure chart;
Fig. 4 is lower resistance ring structure chart;
In figure: 1-brush shaft assembly; 2-upper cover plate; 3-lower cover; The upper resistance ring assembly of 4-; Resistance ring assembly under 5-; 11-axle; 12-felt pad; 13-insulating particle; 14-brush; 15-straight pin; 16-screw; 41-skeleton; 42-resistive film; 43-bus; 44-A group anode; 45-A group switching centre tap; 46-A group negative terminal; 47-B group anode; 48-B group switching centre tap; 49-B group negative terminal; 410-C group exports; 51-skeleton; 52-resistive film; 53-bus; 54-C group anode; 55-C group switching centre tap; 56-C group negative terminal; 57-A group exports; 58-B group exports.
Detailed description of the invention
Below in conjunction with drawings and Examples, one provided by the invention is introduced:
A kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization, including brush shaft assembly 1, upper cover plate 2, lower cover 3, upper resistance ring assembly 4 and lower resistance ring assembly 5, lower resistance ring assembly 5 is located on lower cover 3, upper resistance ring assembly 4 is located on lower resistance ring assembly 5, resistance ring assembly 4 upper end is located at by upper cover plate 2, brush shaft assembly 1, through upper cover plate 2 and lower cover 3, fixes with upper cover plate 2 and lower cover 3 respectively through bearing; Long spiro nail is fixed through upper cover plate 2, lower cover 3, upper resistance ring assembly 4 and lower resistance ring assembly 5.
Described brush shaft assembly 1 includes 11,3 felt pads 12,6 of axle and overlaps 13,6 brushes 14 of insulating particle, straight pin 15 and 6 screws 16, its axis 11 relatively butt end is provided with 3 brush installed surfaces, each brush installed surface is provided with a felt pad 12, each felt pad 12 is provided with 2 brushes 14, brush 14, felt pad 12 and brush installed surface are fixed by each brush 14 by 1 screw 16, and each screw 16 is cased with 1 set insulating particle 13.
Described upper balk ring assembly 4 includes skeleton A41, resistive film A42, bus A43, A group anode 44, A group switching centre tap 45, A group negative terminal 46, B group anode 47, B group switching centre tap 48, B group negative terminal 49 and two C group outputs 410, wherein resistive film A42 spray is on the inner arc surface of skeleton A41, and bus A43 is fixed on ring in skeleton A41 body by beryllium-bronze sheet by epoxyn; Described A group anode 44 is located at 12 positions on skeleton A41,1 position on skeleton A41 is located in A group switching centre tap 45, A group negative terminal 46 is located at 2 positions on skeleton A41, B group anode 47 is located at 4 positions on skeleton A41, the 5 o'clock position on skeleton A41 is located in B group switching centre tap 48, B group negative terminal (49) is located at 6 positions on skeleton A41, and two C group outputs 410 are respectively arranged on and 10 positions on skeleton A41 at 8
Described lower balk ring assembly 5 includes skeleton B51,2 groups of resistive film B52,2 groups of bus B53, C group anodes 54, C group switching centre tap 55,57,2 the B group outputs 58 of 56,2 A group outputs of C group negative terminal, wherein resistive film B52 spray is on the inner arc surface of skeleton B51, and bus B53 is fixed on ring in skeleton B51 body by beryllium-bronze sheet by epoxyn; C group anode 54 is located at 11 positions on skeleton B51,12 positions on skeleton B51 are located in C group switching centre tap 55, C group negative terminal 56 is located at 1 position on skeleton B51, and 2 A groups output 57 is respectively arranged on 3 on skeleton B51 and 5 positions, 2 B groups export 58 and are located at skeleton B51 upper and 9 positions at 7.
Tri-groups of circuit of A, B, C often organize the anode of circuit, negative terminal and centre cap and is resistive film position, often organize the output of circuit and the sticking positions of bus; The resistive film on each road and bus are in the correspondence position of upper and lower resistance ring.
Resistance ring assembly is made up of skeleton and rivet, and sensor resistance film is formed by resistor fluid spray on the skeleton inner arc surface that TPI is made, and sensor conductive bar is fixed on skeleton body internal ring by beryllium-bronze sheet by epoxyn. Resistive film and bus are in the correspondence position of upper and lower resistance ring, and the viscous note scope of bus is more than the spray range of resistive film. Applying positive and negative DC source at resistive film two ends respectively, arrange centre cap (i.e. power supply ground) at null positions simultaneously, brush slides on resistive film, it is achieved measure the function of positive and negative pivot angle. Positive-negative power and earth lead are by rivet interlacement, and rivet is intermembranous with resistance to be connected by conductive silver band. Bus two ends, for exporting the extraction of signal, are connected by wire between rivet with bus. Upper and lower resistance ring structure chart is shown in Fig. 2, Fig. 3.
Brush shaft assembly is made up of axle, brush, insulating particle, felt pad, straight pin, screw. Axle adopts integral structure with brush installed surface, decreases because installing the weak link produced. Each brush includes two groups of brush filament, for connecting resistive film and the bus of each TCH test channel, Optimization-type brush wires width outermost two is 0.3mm, other brush filament width is 0.2mm, this brush structure test capability in environmental mechanics is tested is higher, output is stable, it is possible to adapt to the harsh environmental conditions of Novel servo mechanism. Between brush and the axle of sensor, a felt pad is installed, is attached by screw, screw cover insulation particle, make to insulate between brush and axle. Straight pin and the pin being arranged on lower cover jointly play position-limiting action and realize the mechanical trip requirement of displacement transducer. Fig. 4 is shown in by brush shaft assembly structure chart.
Upper cover plate is discoid, and bottom it, middle part has blind hole, and for installing the spring bearing being sleeved on axle top, there is a circular wire hole on its top, for drawing the inner lead of sensor,
Lower cover is discoid, has through hole in the middle, is used for installing axle, and center has groove at an upper portion thereof, is sleeved on axle lower outside spring bearing for installation, and its interface size is provided by servosystem, for being arranged on actuator.
Three groups of circuit (A group, B group, C group) are distributed on two resistance rings, often organize the anode of circuit, negative terminal and centre cap and are resistive film spray position, often organize the output of circuit and the sticking positions of bus. Wherein a ring includes the output of two groups of (A group, B group) anodes of circuit, negative terminal and centre cap and one group of (C group) circuit, and another ring includes output and one group of (C group) anode of circuit, negative terminal and the centre cap of two groups of (A group, B group) circuit. Resistance ring is carried out overlap, makes the resistive film on each road and bus be in the correspondence position of upper and lower resistance ring. During assembling, for meeting the misalignment requirement of three channel center's taps, after three brushes on brush shaft assembly fasten with resistive film and bus central alignment respectively, by resistance ring being mutually rotatable adjustment by two, ensureing that A road overlaps with C road zero-bit, the misalignment on B road is by software control. Design upper between two skeleton body contact surfaces 120 �� uniformly mill out three fixed positions, after checking for zero with epoxy resin intermixture glue admittedly, stop the zero-bit inconsistent phenomenon in conventional model. Output shaft and complete machine gear shaft are rigidly connected, it is achieved the measurement of closed-loop path and feedback function.
Potentiometric physical dimension, by the restriction of servo control mechanism, cannot change. Therefore, its vibration-resistant property to be improved, improve the reliability of product, brush structure can only be optimized. Tradition brush brush filament width is consistent, is 0.2mm, and Optimization-type brush brush filament width outermost two is 0.3mm, and other brush filament width is 0.2mm. In conjunction with the operating frequency condition of actual product, within 10��2000hz, the resonant frequency of former brush structure concentrates between 770-1000hz, and Optimization-type brush exists 10 frequency resonant points in 2000hz, and ratio is relatively decentralized. Finding through random vibration analysis, the maximum stress that brush bears concentrates on brush root. The maximum stress of former brush structure brush root is 21.4MPa, the maximum stress 16.2MPa of Optimization-type brush structure brush root. Two kinds of brush structures have respectively attended the most excited vibration test of mechanical environment, and output abnormality occurs in process of the test in former brush structure sensor, on-the-spot dissect discovery and have a road brush damage to the terminal; Optimization-type brush structure sensor exports normally in process of the test. Comprehensive simulating is analyzed and test situation, and Optimization-type brush structure test capability in environmental mechanics is tested is higher, and output is stable, it is possible to adapt to the harsh environmental conditions of Novel servo mechanism.
The brush of conventional angular displacement sensor is arranged on nonmetallic collector ring, then is arranged in metal shaft by collector ring, so that insulating between brush and axle. Axle and brush installed surface are designed to integral structure by a kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization. The brush installed surface of axle is installed a felt pad, to isolate by nonmetallic materials between brush and axle, installation process to use screw be fixed on axle by brush, and screw is metal material, therefore the insulating particle made by nonmetallic materials is enclosed within the first half of screw, makes to isolate between screw and brush. Can make to insulate between brush and axle by the method, and eliminate the weak link in assembling process.
The resistive film of each TCH test channel of conventional angular displacement sensor and bus are distributed on a resistance ring, therefore the test function of three passages is realized with two resistance rings, a resistance ring to be distributed two groups of resistive films and bus (i.e. dual pathways resistance ring), another resistance ring is distributed one group of resistive film and bus (i.e. single channel resistance ring). Dual pathways resistance ring electrical point is concentrated, and the nearest distance of adjacent electrical point is close to the safe distance of Insulation Test, owing to wire welding belongs to manual operations, it is impossible to ensure that the insulating properties of every product are all qualified. The electrical point of the highly reliable integral type triple redundance angular displacement sensor of a kind of miniaturization is evenly distributed on two resistance rings, namely goes up resistance ring and includes two groups of resistive films and one group of bus, and lower resistance ring includes one group of resistive film and two groups of bus. The distance of adjacent electrical point is more than the safe distance of Insulation Test, and this kind of structure makes brush structure make corresponding adjustment, eliminates the weak link that tradition brush needs fly line to connect, improves product reliability.
Claims (5)
1. the highly reliable integral type triple redundance angular displacement sensor of miniaturization, it is characterized in that: include brush shaft assembly (1), upper cover plate (2), lower cover (3), upper resistance ring assembly (4) and lower resistance ring assembly (5), lower resistance ring assembly (5) is located on lower cover (3), upper resistance ring assembly (4) is located on lower resistance ring assembly (5), resistance ring assembly (4) upper end is located at by upper cover plate (2), brush shaft assembly (1) traverse upper cover plate (2) and lower cover (3), fix with upper cover plate (2) and lower cover (3) respectively through bearing, long spiro nail is fixed through upper cover plate (2), lower cover (3), upper resistance ring assembly (4) and lower resistance ring assembly (5).
2. a kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization according to claim 1, it is characterized in that: described brush shaft assembly (1) includes axle (11), 3 felt pads (12), 6 sets insulating particle (13), 6 brushes (14), straight pin (15) and 6 screws (16), its axis (11) relatively butt end is provided with 3 brush installed surfaces, each brush installed surface is provided with a felt pad (12), each felt pad (12) is provided with 2 brushes (14), each brush (14) by 1 screw (16) by brush (14), felt pad (12) and brush installed surface fix, each screw (16) is cased with 1 set insulating particle (13).
3. a kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization according to claim 1, it is characterized in that: described upper balk ring assembly (4) includes skeleton A (41), resistive film A (42), bus A (43), A group anode (44), A group switching centre tap (45), A group negative terminal (46), B group anode (47), B group switching centre tap (48), B group negative terminal (49) and two C groups output (410), wherein resistive film A (42) spray is on the inner arc surface of skeleton A (41), bus A (43) is fixed on skeleton A (41) internal ring by beryllium-bronze sheet by epoxyn, described A group anode (44) is located at 12 positions on skeleton A (41), A group switching centre tap (45) is located at 1 position on skeleton A (41), A group negative terminal (46) is located at 2 positions on skeleton A (41), B group anode (47) is located at 4 positions on skeleton A (41), B group switching centre tap (48) is located at the 5 o'clock position on skeleton A (41), B group negative terminal (49) is located at 6 positions on skeleton A (41), and two C groups output (410) are respectively arranged on 8 on skeleton A (41) and 10 positions.
4. a kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization according to claim 1, it is characterized in that: described lower balk ring assembly (5) includes skeleton B (51), 2 groups of resistive film B (52), 2 groups of bus B (53), C group anode (54), C group switching centre tap (55), C group negative terminal (56), 2 A groups output (57), 2 B groups output (58), wherein resistive film B (52) spray is on the inner arc surface of skeleton B (51), bus B (53) is fixed on skeleton B (51) internal ring by beryllium-bronze sheet by epoxyn, C group anode (54) is located at 11 positions on skeleton B (51), C group switching centre tap (55) is located at 12 positions on skeleton B (51), C group negative terminal (56) is located at 1 position on skeleton B (51), and 2 A groups output (57) are respectively arranged on 3 on skeleton B (51) and 5 positions, 2 B groups export (58) and are located at skeleton B (51) upper and 9 positions at 7.
5. the highly reliable integral type triple redundance angular displacement sensor of a kind of miniaturization according to claim 3 or 4, it is characterized in that: tri-groups of circuit of A, B, C often organize the anode of circuit, negative terminal and centre cap and is resistive film spray position, often organize the output of circuit and the sticking positions of bus; The resistive film on each road and bus are in the correspondence position of upper and lower resistance ring.
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| CN201410601770.1A CN105627906B (en) | 2014-10-31 | 2014-10-31 | A kind of highly reliable integral type triple redundance angular displacement sensor of miniaturization |
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| CN105627906B CN105627906B (en) | 2019-01-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050728A (en) * | 2020-09-07 | 2020-12-08 | 北京精密机电控制设备研究所 | Novel high-temperature-resistant angular displacement sensor designed for assembly |
| CN112504114A (en) * | 2021-02-03 | 2021-03-16 | 成都宏明电子股份有限公司 | Miniature dual-redundancy angular displacement sensor with rotation angle limiting function |
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| US5399981A (en) * | 1991-12-09 | 1995-03-21 | Neopost Industrie | Closed continuous resistive track angular position sensor and measurement method |
| CN201697605U (en) * | 2010-06-10 | 2011-01-05 | 陕西宏星电器有限责任公司 | Angle displacement sensor |
| US20120306514A1 (en) * | 2011-06-03 | 2012-12-06 | Chen Chieh Chi | Torsion angle and rotation angle measurement device |
| 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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2014
- 2014-10-31 CN CN201410601770.1A patent/CN105627906B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5399981A (en) * | 1991-12-09 | 1995-03-21 | Neopost Industrie | Closed continuous resistive track angular position sensor and measurement method |
| CN201697605U (en) * | 2010-06-10 | 2011-01-05 | 陕西宏星电器有限责任公司 | Angle displacement sensor |
| US20120306514A1 (en) * | 2011-06-03 | 2012-12-06 | Chen Chieh Chi | Torsion angle and rotation angle measurement device |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050728A (en) * | 2020-09-07 | 2020-12-08 | 北京精密机电控制设备研究所 | Novel high-temperature-resistant angular displacement sensor designed for assembly |
| CN112504114A (en) * | 2021-02-03 | 2021-03-16 | 成都宏明电子股份有限公司 | Miniature dual-redundancy angular displacement sensor with rotation angle limiting function |
| CN112504114B (en) * | 2021-02-03 | 2021-04-27 | 成都宏明电子股份有限公司 | Miniature dual-redundancy angular displacement sensor with rotation angle limiting function |
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