CN216561174U - Lightweight two-shaft flexible support quick reflector - Google Patents
Lightweight two-shaft flexible support quick reflector Download PDFInfo
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- CN216561174U CN216561174U CN202123300690.7U CN202123300690U CN216561174U CN 216561174 U CN216561174 U CN 216561174U CN 202123300690 U CN202123300690 U CN 202123300690U CN 216561174 U CN216561174 U CN 216561174U
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Abstract
The utility model discloses a light-weight two-shaft flexible support quick reflector suitable for a space-based platform horizontal photoelectric tracking system, which adopts a voice coil motor as a driver and drives the reflector to realize high-frequency motion through push-pull action; the reflector and the reflector bracket are installed and connected through a flexible connector; an eddy current displacement sensor is used as a feedback device and fixed on a sensor mounting frame, and a displacement measurement point connecting line and a moving shaft are positioned on the same axis; the voice coil motor, the flexible supporting structure and the sensor bracket are all fixed on the base; the flexible supporting structure is connected with the reflector bracket, the freedom degree of the movement direction of the reflector is provided through the flexible hinge at the middle section, and the movement in other directions is limited; the reflector adopts a hexagon as a lightweight hole unit. The fast reflector has low manufacturing cost and compact integral structure, can avoid complex decoupling operation and is more suitable for space-based working environment.
Description
Technical Field
The utility model belongs to the field of design of optical precision mechanical structures, particularly relates to a light-weight design of a flexible supporting structure and a reflecting mirror, and particularly relates to a light-weight two-shaft flexible supporting quick reflecting mirror.
Background
The compound axis photoelectric tracking system consists of a coarse tracking subsystem and a fine tracking fast reflector, the target is captured by depending on a large view field of the coarse tracking subsystem, when the coarse tracking precision reaches a certain degree, a fine tracking mode can be switched, the fine tracking subsystem compensates and corrects a coarse tracking residual error by depending on the fast reflector capable of moving fast, the accurate tracking of the target in the view field is realized, and the tracking precision of the compound axis system is mainly influenced by the output precision of the fine tracking fast reflector. The fine tracking fast reflector has the advantages of high response speed, high working bandwidth, high pointing accuracy and the like. In a tracking system for removing space debris by using space-based laser irradiation, higher requirements are put forward on the quality, compactness, reliability and output precision of a precise tracking quick reflector.
The working bandwidth of the fine tracking fast reflector is influenced by the low-order resonant frequency of the system, and the low-order resonant frequency of the fast reflector system is determined by the flexible supporting structure, so the design of the flexible supporting structure is one of the most active links in the current fast reflector structure design, the design target is usually to improve the closed-loop bandwidth of the system and the motion stroke of the reflector, and the light-weight design of the structure is less considered. Simultaneously, among the prior art scheme, the installation of the speculum mirror body mainly adopts the picture frame edge to press from both sides tightly or picture frame bottom and edge sticky mode fix, because the existence of picture frame, causes the overall dimension of quick speculum big slightly and to the mirror body rigidity requirement higher, has restricted the lightweight of the mirror body.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a light-weight two-axis flexible support fast mirror that addresses the deficiencies of the prior art. The fast reflector has low manufacturing cost and compact integral structure, can avoid complex decoupling operation and is more suitable for space-based working environment.
The technical scheme for realizing the purpose of the utility model is as follows:
a light-weight two-shaft flexible support quick reflector comprises a base made of alloy steel, wherein the base is provided with a flexible support, 4 voice coil motor assemblies and a sensor mounting support which are fixed on the base through a group of flexible support mounting holes, a group of voice coil motor stator mounting holes and a group of sensor support mounting holes respectively, the flexible support is positioned in a central area, the periphery of the flexible support is sequentially provided with the sensor mounting support and the 4 voice coil motor assemblies, the flexible support is connected with a reflector support, the reflector support is connected with a reflector through a flexible connector, the 4 voice coil motor assemblies are symmetrically placed in a square shape, each voice coil motor assembly is provided with a voice coil rotor and a voice coil stator, the voice coil stators are fixed on the base, the sensor mounting support is provided with two groups of eddy current displacement sensors, and the pushing displacement and the pulling displacement on the same motion shaft are measured by adopting a group of eddy current displacement sensors simultaneously, the connecting line of the measuring points of the eddy current displacement sensor for measuring the push displacement and the pull displacement is collinear with the motion axis of the reflector.
The mirror body of speculum uses aluminium as mirror base material, and the mirror body is equipped with five first circle blind holes that have positioning groove with the one side of speculum support contact, and one of them first circle blind hole is located mirror body center department, and other 4 first circle blind holes are located mirror body edge and the symmetric position department of equant mirror body circumference, and flexible connector adopts glued mode to install in first circle blind hole through positioning groove, under the prerequisite of guaranteeing intensity, the mirror body material is got rid of to the remaining region adoption hexagonal hole unit as much as possible of mirror body.
The reflector bracket is made of 45 steel and is in an orthogonal cross shape, 4 end parts of the reflector bracket in the orthogonal cross shape are provided with bosses for connecting a voice coil motor rotor, one surface of the reflector bracket in contact with the reflector is in a plane shape, a central position and 4 end parts of one surface of the reflector bracket in contact with the reflector are provided with a group of second round blind holes for placing flexible connectors, the periphery of the second round blind hole in the central position is provided with a group of countersunk round through holes, 4 end parts are also provided with a group of oval through holes, the countersunk round through holes and the oval through holes are respectively used for fixing a flexible supporting structure and the voice coil motor rotor, and a connecting flexible supporting boss is arranged at the center of the other surface of the reflector bracket, the connecting flexible supporting boss and the connecting voice coil motor rotor boss are different in height, and the connecting flexible supporting boss and the connecting voice coil motor rotor boss are respectively used for connecting a flexible support and a voice coil motor rotor.
The sensor mounting bracket is a hollow alloy steel plate for a central area, 4 hollow bosses for mounting the eddy current displacement sensor are arranged at the central symmetrical positions on the periphery of a central through hole of the alloy steel plate, a group of sensor bracket mounting holes are formed in the periphery of each boss, a threaded hole is formed in the upward surface of each boss and used for mounting and fixing a probe of the eddy current displacement sensor, a through hole with the same size as the threaded hole is formed in the position of each boss, namely the alloy steel plate, at the bottom of each boss, the sensor bracket is fixedly mounted on the base through the sensor bracket mounting holes in a matched mode through bolts and the sensor bracket mounting holes in the base, and the eddy current displacement sensor probes are mounted and locked through threaded holes in the upper portions of the bosses on the sensor bracket after penetrating through the through holes in the base.
The flexible connector is cylindrical, a positioning convex edge is arranged on the outer wall of the cylindrical shape and is correspondingly matched with a positioning groove on the reflector, a first flexible hinge and a second flexible hinge corresponding to the two moving directions are further arranged on the outer wall of the cylindrical shape, the flexible connector is arranged in the second round blind hole of the reflector support and the first round blind hole in the reflector body, and the flexible connector, the second round blind hole and the first round blind hole are fixedly connected together in a cementing manner.
The flexible supporting structure is made of a titanium alloy material, and is provided with an upper section, a middle section and a lower section which are sequentially connected, flexible supporting mounting holes are formed in the upper section and the lower section, the upper section is fixed on the support through the flexible supporting mounting holes by bolts, the lower section is fixed on the base through the flexible supporting mounting holes by bolts, a third flexible hinge is arranged on the middle section, and the third flexible hinge removes redundant materials on the premise of ensuring connectivity and overall rigidity, provides flexibility of the movement direction, and simultaneously limits the degree of freedom of other directions.
Voice coil loudspeaker voice coil motor element is equipped with voice coil loudspeaker voice coil active cell and voice coil loudspeaker voice coil stator, and the voice coil loudspeaker voice coil active cell adopts the magnet material for coil loudspeaker voice coil stator, and the kidney circle via hole that voice coil loudspeaker voice coil motor active cell passes through on the speculum support links firmly together with for the speculum support bolt, and drive speculum support drives the speculum motion during voice coil loudspeaker voice coil active cell motion.
The principle of the technical scheme is as follows: the voice coil motor component driver moving shaft, a rotating moving point connecting line of a third flexible hinge of a flexible support and an eddy current displacement sensor measuring point connecting line are located on the same axis, the flexible support structure with light weight design can restrict the freedom degree of the moving shaft in other directions, a voice coil motor stator is fixed on a base, a voice coil motor rotor moves under the action of an input control voltage signal, a driving reflector support drives a light weight reflector to move through a flexible connecting body to generate linear displacement, the eddy current displacement sensor fixed on a sensor support measures the moving displacement of the reflector support and feeds the measured moving displacement back to a controller in real time, and the controller outputs a control voltage signal to drive the voice coil motor to adjust the output displacement of the reflector by adopting a preset control algorithm according to the deviation between an input signal and a measuring signal.
According to the technical scheme, the flexible connecting body is used for carrying out back supporting installation on the reflector, redundant materials are removed from the middle section of the flexible supporting structure, on the premise that the strength is ensured, hexagonal hole-shaped units are adopted to remove the reflector materials from the back area of the reflector as much as possible, and the light-weight design reduces the total mass of the two-axis quick reflector; the reflector body and the bracket are connected by adopting the flexible connector, so that the influence of thermal stress on the shape precision of the reflector body in the working process of the voice coil motor can be reduced; the eddy current displacement sensor measures the displacement of the reflector bracket in a non-contact measuring mode and feeds the displacement back to the control system, so that friction in the measuring process can be avoided; the four voice coil motors and the sensors are distributed coaxially, so that the whole structure is more compact, and meanwhile, complex decoupling operation is avoided, and the method is more favorable for adapting to the space-based working environment.
The fast reflector has low cost and compact integral structure, can avoid complicated decoupling operation and is more suitable for space-based working environment.
Drawings
FIG. 1 is an exploded schematic view of an embodiment;
FIG. 2 is an assembly view of the embodiment;
FIG. 3 is a schematic structural diagram of a reflector in an embodiment;
FIG. 4 is a schematic view showing a structure of a mirror holder according to an embodiment;
FIG. 5 is a schematic structural view of a sensor mounting bracket according to an embodiment;
FIG. 6 is a schematic view of the structure of the base in the embodiment;
FIG. 7 is a schematic view of a flexible connector structure according to an embodiment;
FIG. 8 is a schematic view of a flexible support structure according to an embodiment;
fig. 9 is a schematic structural diagram of a voice coil motor assembly in an embodiment.
In the figure: 1. the reflecting mirror 2, the reflecting mirror support 3, the sensor mounting support 4, the base 5, the flexible connector 6, the flexible support 7, the voice coil motor rotor 8, the voice coil motor stator 9, the eddy current displacement sensor 11, the hexagonal hole unit 12, the first round blind hole 13, the positioning groove 21, the kidney round through hole 22, the countersunk circular through hole 23, the second round blind hole 24, the flexible support boss 25, the voice coil motor rotor boss 31, the sensor boss 32, the threaded hole 33, the sensor support mounting hole 34, the through hole 41, the flexible support mounting hole 42, the voice coil motor stator mounting hole 43, the sensor support mounting hole 51, the first flexible hinge 52, the second flexible hinge 53, the positioning convex rib 61, the flexible support upper section 62, the flexible support middle section 63, the flexible support lower section 64, the third flexible hinge 65 and the flexible support mounting hole.
Detailed Description
The utility model will be further elucidated with reference to the drawings and examples, without however being limited thereto.
Example (b):
a light-weight two-shaft flexible support fast reflector comprises a base 4 made of alloy steel, wherein the base 4 is provided with a flexible support 6, 4 voice coil motor assemblies and a sensor mounting support 3 which are fixed on the base 4 through a group of flexible support mounting holes 41, a group of voice coil motor stator mounting holes 42 and a group of sensor support mounting holes 43 respectively, the flexible support 6 is positioned in a central area, the periphery of the flexible support 6 is sequentially provided with the sensor mounting support 3 and the 4 voice coil motor assemblies, the flexible support 6 is connected with a reflector support 2, the reflector support 2 is connected with the reflector 1 through a flexible connector 5, the 4 voice coil motor assemblies are symmetrically placed in a square shape, each voice coil motor assembly is provided with a voice coil rotor 7 and a voice coil stator 8, the voice coil stator 8 is fixed on the base 4, the sensor mounting support 3 is provided with two groups of electric eddy current displacement sensors 9, the push displacement and the pull displacement on the same movement axis are simultaneously measured by adopting a group of eddy current displacement sensors 9, and the measuring point connecting line of the eddy current displacement sensors 9 for measuring the push displacement and the pull displacement is collinear with the movement axis of the reflector 1.
As shown in fig. 3, the mirror body of the reflector 1 uses aluminum as a mirror blank material, one surface of the mirror body contacting the reflector holder 2 is provided with five first round blind holes 12 with positioning grooves 13, one of the first round blind holes 12 is located at the center of the mirror body, the other 4 first round blind holes 12 are located at the edge of the mirror body and at symmetrical positions equally dividing the circumference of the mirror body, the flexible connector 5 is installed in the first round blind holes 12 in a cementing manner through the positioning grooves 13, and on the premise of ensuring the strength, the rest area of the mirror body is removed with hexagonal hole units 11 as much as possible.
As shown in fig. 4, the reflector holder 2 is made of 45 steel and is in an orthogonal "cross" shape, 4 end portions of the reflector holder 2 in the orthogonal "cross" shape are provided with rotor bosses 25 connected to the voice coil motor, one surface of the reflector holder 2 contacting the reflector 1 is in a plane shape, a group of second round blind holes 23 and second round blind holes 23 are arranged at the central position and 4 end portions of one surface of the reflector holder 2 contacting the reflector 1 for placing the flexible connectors 5, a group of countersunk round through holes 22 are arranged at the periphery of the second round blind hole 23 at the central position, a group of kidney round through holes 21 are further arranged on the 4 end portions, the kidney round through holes 21 of the countersunk round through holes 22 are respectively used for fixing the flexible supporting structure 6 and the reflector body 2, a connecting flexible supporting boss 24 is arranged at the central position of the other surface of the reflector holder 2, the connecting flexible supporting boss 24 and the rotor bosses 25 connected to the voice coil motor are different in height, the connection flexible support boss 24 and the connection voice coil motor rotor boss 25 are respectively used for connecting the flexible support 6 and the voice coil motor rotor 7.
As shown in fig. 5, the sensor mounting bracket 3 is an alloy steel plate with a hollow central region, 4 limit is central symmetry position department and is provided with 4 and is the cavity form boss 31 that is used for installing eddy current displacement sensor 9 on the center through-hole periphery of alloy steel sheet, the periphery of boss 31 is equipped with a set of sensor support mounting hole 33, every boss 31 one side up is equipped with screw hole 32 and is used for installing the probe of fixed eddy current displacement sensor 9, every boss 31 bottom is that this position department of alloy steel sheet is equipped with the through-hole 34 that equals with screw hole 32 size promptly, sensor support 3 adopts the cooperation fixed mounting of bolt and sensor support mounting hole 43 on base 4 on through sensor support mounting hole 33 on base 4, electric eddy current displacement sensor 9 probe passes through the through-hole 34 in base 4 after with the screw hole 32 installation locking on the upper portion of boss 31 of sensor support.
As shown in fig. 7, the flexible connector 5 is cylindrical, a positioning rib 53 is provided on the outer wall of the cylinder, the positioning rib 53 is correspondingly matched with the positioning groove 13 on the reflector 1, a first flexible hinge 51 and a second flexible hinge 52 corresponding to two moving directions are further provided on the outer wall of the cylinder, the flexible connector 5 is placed in the second round blind hole 23 of the reflector holder 2 and the first round blind hole 12 in the reflector 1, and the three are fixedly connected together in a cementing manner.
As shown in fig. 8, the flexible supporting structure 6 is made of a titanium alloy material, the flexible supporting structure 6 is provided with an upper section 61, a middle section 62 and a lower section 63 which are connected in sequence, flexible supporting mounting holes 65 are formed in the upper section 61 and the lower section 63, the upper section 61 is fixed on the bracket 2 through the flexible supporting mounting holes 65 by bolts, the lower section 63 is fixed on the base 4 through the flexible supporting mounting holes 41 by bolts, a third flexible hinge 64 is arranged on the middle section 62, and the third flexible hinge 64 removes redundant materials on the premise of ensuring connectivity and overall rigidity, provides flexibility in the moving direction, and limits degrees of freedom in other directions.
As shown in fig. 9, the voice coil motor assembly is provided with a voice coil rotor 7 and a voice coil stator 8, the voice coil rotor 7 is a coil assembly, the voice coil stator 8 is made of a magnet material, the voice coil motor rotor 7 is fixedly connected with the reflector bracket 2 through a waist circle via hole 21 on the reflector bracket 2 by a bolt, and the voice coil rotor 7 drives the reflector bracket 2 to drive the reflector 1 to move when moving.
The principle of the technical scheme is as follows: the voice coil motor component driver motion shaft, the third flexible hinge 64 of the flexible support 6 and the measuring point of the eddy current displacement sensor 9 are located on the same axis, the flexible support structure with light weight design can restrict the freedom degree of the motion shaft in other directions, the voice coil motor stator 8 is fixed on the base, the voice coil motor rotor 7 moves under the action of input control voltage signals, the driving reflector support 2 drives the light reflector 1 to move through the flexible connector 5 to generate linear displacement, the eddy current displacement sensor 9 fixed on the sensor support 2 measures the motion displacement of the reflector support 2 and feeds the measured motion displacement back to the controller in real time, and the controller outputs control voltage signals to drive the voice coil motor to adjust the output displacement of the reflector according to the deviation between the input signals and the measuring signals by adopting a preset control algorithm.
Claims (7)
1. The utility model provides a quick speculum of lightweight diaxon flexible supporting, its characterized in that, including the base of alloy steel material, be equipped with on the base and fix flexible supporting, 4 voice coil motor subassemblies and sensor installing support on the base through a set of flexible supporting mounting hole, a set of voice coil motor stator mounting hole, a set of sensor support mounting hole respectively, wherein, flexible supporting is located central region, and the periphery of flexible supporting is sensor installing support and 4 voice coil motor subassemblies in proper order, flexible supporting and speculum leg joint, speculum support are connected with the speculum through flexible connector, 4 voice coil motor subassemblies are square symmetry and place, and every voice coil motor subassembly is equipped with voice coil rotor and voice coil stator, and the voice coil stator is fixed on the base, be equipped with two sets of electric eddy current displacement sensor on the sensor installing support, the epaxial push of same motion, The pull displacement is measured by a group of eddy current displacement sensors at the same time, and the connecting line of the measuring points of the eddy current displacement sensors for measuring the push displacement and the pull displacement is collinear with the movement axis of the reflector.
2. The light-weight two-shaft flexible support quick reflector according to claim 1, wherein the reflector body of the reflector is made of aluminum, five first round blind holes with positioning grooves are formed in the surface of the reflector body, which is in contact with the reflector bracket, one of the first round blind holes is located in the center of the reflector body, the other 4 first round blind holes are located at the edge of the reflector body and are symmetrically distributed on the periphery of the reflector body, the flexible connecting body is installed in the first round blind holes in a gluing mode through the positioning grooves, and the material of the reflector body is removed from the rest area of the reflector body through hexagonal hole units.
3. The light-weight two-shaft flexible support fast reflector according to claim 1, wherein the reflector holder is made of 45 steel and has an orthogonal "cross" shape, 4 end portions of the reflector holder having the orthogonal "cross" shape are provided with bosses for connecting to a voice coil motor mover, one surface of the reflector holder contacting the reflector is planar, a set of second circular blind holes are provided at a central position and 4 end portions of one surface of the reflector holder contacting the reflector for placing flexible connectors, a set of countersunk circular through holes are provided at a periphery of the second circular blind hole at the central position, 4 end portions are further provided with a set of kidney circular through holes, the countersunk circular through holes and the kidney circular through holes are respectively used for fixing the flexible support structure and the voice coil motor mover, a connecting flexible support boss is provided at a central position of the other surface of the reflector holder, and heights of the connecting flexible support boss and the boss for connecting to the voice coil motor mover are different, and the connecting flexible support boss and the connecting voice coil motor rotor boss are respectively used for connecting the flexible support and the voice coil motor rotor.
4. The light-weighted two-axis flexible support fast reflector according to claim 1, wherein the sensor mounting bracket is an alloy steel plate having a hollow center region, be central symmetric position department and be provided with 4 and be the cavity form bosss that are used for installing eddy current displacement sensor on alloy steel sheet's central through-hole periphery, the periphery of boss is equipped with a set of sensor support mounting hole, every boss one side up is equipped with the screw hole and is used for installing fixed eddy current displacement sensor's probe, every boss bottom is that this position department of alloy steel sheet is equipped with the through-hole that equals with the screw hole size, the sensor support adopts the sensor support mounting hole cooperation fixed mounting on the base of bolt and base through the sensor support mounting hole, the installation of screw hole on boss upper portion is locked on the sensor support after the eddy current displacement sensor probe passes the through-hole in the base.
5. The light-weight two-axis flexible support quick reflector according to claim 1 or claim 2, wherein the flexible connector is cylindrical, a positioning rib is arranged on the outer wall of the cylindrical shape, the positioning rib is correspondingly matched with the positioning groove on the reflector, a first flexible hinge and a second flexible hinge corresponding to two moving directions are further arranged on the outer wall of the cylindrical shape, the flexible connector is arranged in the second round blind hole of the reflector bracket and the round blind hole in the reflector body, and the flexible connector, the second round blind hole and the round blind hole are fixedly connected together in a cementing manner.
6. The light-weight two-axis flexible support fast reflector according to claim 1 or claim 2, wherein the flexible support structure is made of titanium alloy, the flexible support structure is provided with an upper section, a middle section and a lower section which are sequentially connected, the upper section and the lower section are provided with flexible support mounting holes, the upper section is fixed on the bracket through the flexible support mounting holes by bolts, the lower section is fixed on the base through the flexible support mounting holes by bolts, and the middle section is provided with a third flexible hinge.
7. The light-weight two-shaft flexible support quick reflector according to claim 1 or claim 2, wherein the voice coil motor assembly is provided with a voice coil rotor and a voice coil stator, the voice coil rotor is a coil assembly, the voice coil stator is made of a magnet material, the voice coil motor rotor is bolted with the reflector support through a kidney-shaped through hole in the reflector support, and the voice coil rotor drives the reflector support to drive the reflector to move when moving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123300690.7U CN216561174U (en) | 2021-12-27 | 2021-12-27 | Lightweight two-shaft flexible support quick reflector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123300690.7U CN216561174U (en) | 2021-12-27 | 2021-12-27 | Lightweight two-shaft flexible support quick reflector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116647068A (en) * | 2023-07-27 | 2023-08-25 | 北京瑞控信科技股份有限公司 | Positioning device and installation method of quick reflection mirror voice coil motor |
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2021
- 2021-12-27 CN CN202123300690.7U patent/CN216561174U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116647068A (en) * | 2023-07-27 | 2023-08-25 | 北京瑞控信科技股份有限公司 | Positioning device and installation method of quick reflection mirror voice coil motor |
| CN116647068B (en) * | 2023-07-27 | 2023-10-20 | 北京瑞控信科技股份有限公司 | Positioning device and installation method of quick reflection mirror voice coil motor |
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