CN101482643B - Bidimensional large-diameter fast control reflection mirror - Google Patents
Bidimensional large-diameter fast control reflection mirror Download PDFInfo
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- CN101482643B CN101482643B CN2009100782582A CN200910078258A CN101482643B CN 101482643 B CN101482643 B CN 101482643B CN 2009100782582 A CN2009100782582 A CN 2009100782582A CN 200910078258 A CN200910078258 A CN 200910078258A CN 101482643 B CN101482643 B CN 101482643B
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- reflection mirror
- rotor
- light reflection
- bidimensional
- picture frame
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Abstract
A two-dimensional large caliber fast control reflection mirror is suitable for various optical systems to drive and stabilize the light beam. The problem to be solved is that, the requirement of the reflection mirror caliber larger than 250 mm is satisfied driven by a straight-line drive device, the inclination angle range and the resonance frequency of the fast control reflection mirror can be effectively improved and increased. The invention compares four blocks of distributed spring sheets to the central spherical hinge to implement the flexible rotation around the dual shafts of the reflection mirror and rigid fastening of the rest freedom degrees; the light weighting of the rotating body and the minimum of the rotational inertia around the shaft can be implemented by improving the reflection mirror fixing mode, uniting the rotating centers of the dual shafts and the gravity centers of the rotating body and light weighting design of the supporting frame and the reflection mirror; the compact whole structure and the small appearance size can be implemented by reasonable arrangements of the straight-line drive device and the micro-displacement position sensor.
Description
Technical field
The present invention relates to a kind of mirror structure that is applicable in astronomical telescope, laser communications, image stabilization system, ADAPTIVE OPTICS SYSTEMS, tracking aiming and the laser transmitting system, specifically, be a kind of quick steering reflection mirror structure of bidimensional heavy caliber that drives based on linear drive apparatus.
Background technology
Rapid control reflector is used for driving and stable light-beam in various optical systems, and as the equipment of sensor, its main performance comprises following range, resonance frequency and effective aperture.Following range is the maximum magnitude of mirror deflection, determines the scope of energy compensation correction; Resonance frequency is directly connected to control system bandwidth and response speed; The effective aperture is the clear aperature of catoptron, and its size influences the raising of structural resonance frequency.Current also have multiple version both at home and abroad all in the development of carrying out fast mirror energetically, but the most fast mirror of bore less than 200mm that all concentrate on.Do not report especially greater than the fast mirror of 250mm for bore.Therefore, greater than the 250mm rapid control reflector, its The Structural Design has challenge meaning and realistic meaning for bore.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of Bidimensional large-diameter fast control reflection mirror structure is provided, this structure is passed through linear drive apparatus, satisfy of the requirement of catoptron bore, can improve the inclination angle scope and the resonance frequency of catoptron effectively greater than 250mm.
The technical solution adopted for the present invention to solve the technical problems is: Bidimensional large-diameter fast control reflection mirror is characterized in that: be made up of light reflection mirror, support picture frame, linear drive apparatus, elasticity suspension support, micrometric displacement position transducer and base; Light reflection mirror by screw with support picture frame and be connected, the mover of linear drive apparatus is connected with the support picture frame by screw, has the mover of light reflection mirror, support picture frame and linear drive apparatus to constitute the rotor of rapid control reflector together; Rotor is connected with the elasticity suspension support by supporting picture frame, and the elasticity suspension support couples together rotor and base; The stator of linear drive apparatus and micrometric displacement position transducer are fixed on the base; The bore of light reflection mirror is greater than 250mm; The elasticity suspension support is made up of center ball pivot, spring base and four flat spring sheets.
Gluing embedded invar nut is arranged in the described light reflection mirror back support face, realize it being fixed from the lightweight back of reflecting mirror.
Described light reflection mirror xsect Cheng Shuan " arch form " under the situation that guarantees reflecting surface complete sum catoptron rigidity, removes in the middle of the back of reflecting mirror and skirt materials, alleviates catoptron weight and reduces its moment of inertia around center of gravity.
Described light reflection mirror xsect Cheng Shuan " arch form ", " arch form " space in the middle of the light reflection mirror back overlaps the diaxon intersection point of rotor rotation and the center of gravity of rotor.
Described support picture frame material selection specific stiffness and heat transfer/heat radiation and the suitable aluminium alloy of thermal capacitance by reasonable cloth muscle, have been designed to certain thickness four limit indent square plates on the structure.
Described center ball pivot is made omnipotent circular hinges, realizes elastic deformation and the longitudinal stiffness position of rotor two sense of rotation kept; Described spring base is a structure of stretching out four symmetries, contour boss on annulus, is beneficial to guarantee that 4 spring leafs are contour apart from base; Four spring leafs are separately fixed on four boss of spring base by screw, and the center ball pivot is arranged in spring base annulus middle position; Described four spring leafs, under the situation of taking all factors into consideration structure space and driving force, separately be arranged symmetrically in middle " arch form " space, light reflection mirror back, radially realize to rotor two laterally and one keep around the position that optical axis rotate, realizing that axially rotor diaxon rotation center and center of gravity unify; Astrosphere, spring leaf link by screw and the rotor that supports on the picture frame, realize the resiliency supported that the rotor bidimensional is rotated.
The advantage of the quick mirror structure of bidimensional heavy caliber of the present invention: 1) topology layout compactness, physical dimension is little; 2) catoptron and support the picture frame light-weight design, and improving light reflection mirror is fixing makes lightweight construction; 3) coincidence of realization rotor center of gravity and rotation center, moment of inertia is little; 4) utilize linear drive apparatus to drive, realize that the big stroke of bidimensional rotates; 5) can accomplish the mechanical resonant frequency height to the rapid control reflector of bore greater than 250mm.
Description of drawings
Fig. 1 is the Bidimensional large-diameter fast control reflection mirror structural front view;
Fig. 2 is the structure vertical view of Fig. 1;
Fig. 3 is elasticity suspension support structural front view among the present invention;
Fig. 4 is light reflection mirror cut-open view among the present invention;
Fig. 5 is the fixing partial enlarged drawing of light reflection mirror among the present invention;
Fig. 6 is for supporting the picture frame structural front view among the present invention;
Fig. 7 is the cut-open view N-N of Fig. 6;
Fig. 8 is center ball pivot structural drawing among the present invention;
Fig. 9 is a medi-spring holder structure front view of the present invention;
Figure 10 is the vertical view of Fig. 9.
Figure 11 is medi-spring chip architecture figure of the present invention;
Figure 12 is understructure figure among the present invention;
Among the figure: 1 is light reflection mirror, and 2 for supporting picture frame, and 3 is linear drive apparatus, and 4 is the elasticity suspension support, and 5 is the micrometric displacement position transducer, and 6 is base, and 7 is the center ball pivot, and 8 is spring base, and 9 is spring leaf.
Embodiment
Introduce the present invention in detail below in conjunction with the drawings and the specific embodiments.
As shown in Figure 1, 2, Bidimensional large-diameter fast control reflection mirror of the present invention is made of light reflection mirror 1, support picture frame 2, linear drive apparatus 3, elasticity suspension support 4, micrometric displacement position transducer 5 and base 6; Pass through screw, couple together supporting picture frame 2 and light reflection mirror 1, by screw the mover of linear drive apparatus 3 and support picture frame 2 are coupled together, the mover of light reflection mirror 1, support picture frame 2 and linear drive apparatus 3 constitutes the rotor of rapid control reflector together so again; Elasticity suspension support 4 is made of center ball pivot 7, spring base 8 and four the same spring leafs 9 as shown in Figure 3; On base 6, its layout does not exceed the catoptron outside diameter by screw retention for the stator of elasticity suspension support 4, linear drive apparatus 3 and micrometric displacement position transducer 5, to dwindle the physical dimension of structure; Rotor links with the center ball pivot 7 in the elasticity suspension support 4, spring leaf 9 by the screw that supports on the picture frame 2, realizes the resiliency supported that the rotor bidimensional is rotated.The rotation center of elasticity suspension support 4 is arranged in light reflection mirror 1 and the hollow part of supporting picture frame 2 formations in the rotor, realizes the unification of rotation center and rotor center of gravity, reduces moment of inertia.
Coordinate system only provides x axle and y direction of principal axis as shown in Figure 2 among the figure, the z direction of principal axis meets right-hand rule.4 linear drive apparatus 3 and 4 micrometric displacement position transducers 5 are arranged on the circumference among the figure, and evenly distribute along the circle spacing, 4 uniform linear drive apparatus 3 are realized the driving around x axle and the rotation of y axle, and 4 uniform micrometric displacement position transducers 5 are realized the position probing around x axle and the rotation of y axle.Linear drive apparatus 3 can outsourcing such as linear voice coil motor etc., and micrometric displacement position transducer 5 also can outsourcing such as eddy current displacement sensor etc.
The xsect of light reflection mirror 1 is designed to two " arch form " as Fig. 4, under the situation that guarantees reflecting surface complete sum catoptron rigidity, removes in the middle of the back of reflecting mirror and skirt materials, alleviates catoptron weight and reduces its moment of inertia around center of gravity; Gluing embedded 4 invar nuts in light reflection mirror 1 back support face are realized it being carried out and support picture frame 2 linking as Fig. 5 from the lightweight back of reflecting mirror.Utilize light reflection mirror 1 back middle " arch form " spatial placement center ball pivot 7 and four flat spring sheets 9, make the diaxon intersection point of rotor rotation and the center of gravity of rotor overlap.
Support picture frame 2 structures shown in Fig. 6,7, be used for fixing light reflection mirror 1 on the one hand, be connected with the mover of elasticity suspension support 4 and linear drive apparatus 3 again on the other hand, realize the important transition piece that light reflection mirror 1 rotates around X, Y two Control Shafts, support material selection specific stiffness and the heat transfer/heat radiation and the suitable aluminium alloy of thermal capacitance of picture frame 2, pass through reasonable cloth muscle on the structure, certain thickness four limit indent square plates have been designed to, under the prerequisite of assurance function and rigidity, as far as possible weight reduction and around the moment of inertia of center of gravity.
Elasticity suspension support 4 is made up of center ball pivot 7, spring base 8 and four flat spring sheets 9 as shown in Figure 3.Be designed to as shown in Figure 8 for center ball pivot 7 structures in the elasticity suspension support 4, on cylindrical rod, have a bit of diameter processing thin, make omnipotent circular hinges, realize elastic deformation and the longitudinal stiffness position of rotor two sense of rotation kept; Be designed to shown in Fig. 9,10 for 8 structures of the spring base in the elasticity suspension support 4, on an annulus, stretch out four symmetries, contour boss, be beneficial to guarantee that 4 spring leafs 9 are contour apart from base 6, make structure symmetry as far as possible.Four spring leafs 9 are separately fixed at by screw on four boss of spring base 8, and center ball pivot 7 is arranged in spring base 8 annulus middle positions; Be designed to as shown in figure 11 for four spring leaf 9 structures in the elasticity suspension support 4, it is the thin slice of a uniform thickness, structure, processing technology are simple, material structure requires the same, under the situation of taking all factors into consideration structure space and driving force, in reasonable Arrangement radially, realize to rotor two laterally and one keep around the position that optical axis rotate, unify in the center of gravity of the rotation center of axially realizing diaxon and rotor; The final rotor of realizing has around X, the flexible rotation of Y diaxon under the support of elasticity suspension support 4, and all the other degree of freedom rigidly fix.
Finally, this structure drives by linear drive apparatus 3, realizes rotor around X, the flexible rotation of Y diaxon, and the positional information that micrometric displacement position transducer 5 detects rotor realizes the closed-loop control to rotor.According to this structure, designed the rapid control reflector of a cover bore 260mm, test the open loop Frequency Response of this rapid control reflector greater than 450Hz with eddy current displacement sensor; After the eddy current displacement sensor closed loop, the closed loop Frequency Response of tape controller system is greater than 200Hz.
As known from the above, Bidimensional large-diameter fast control reflection mirror of the present invention utilizes linear drive apparatus to drive, and realizes that the big stroke of bidimensional rotates; And the coincidence of rotor center of gravity and rotation center, moment of inertia is little; And the topology layout compactness, physical dimension is little; Catoptron and support the picture frame light-weight design, and improving light reflection mirror is fixing makes lightweight construction; This Bidimensional large-diameter fast control reflection mirror can be accomplished the mechanical resonant frequency height to the rapid control reflector of bore greater than 250mm.
Claims (6)
1. Bidimensional large-diameter fast control reflection mirror is characterized in that: be made up of light reflection mirror (1), support picture frame (2), linear drive apparatus (3), elasticity suspension support (4), micrometric displacement position transducer (5) and base (6); Light reflection mirror (1) is connected with support picture frame (2) by screw, the mover of linear drive apparatus (3) is connected with support picture frame (2) by screw, is made of the rotor of rapid control reflector together the mover of light reflection mirror (1), support picture frame (2) and linear drive apparatus (3); Rotor is connected with elasticity suspension support (4) by supporting picture frame (2), and elasticity suspension support (4) couples together rotor and base (6); The stator of linear drive apparatus (3) and micrometric displacement position transducer (5) are fixed on the base (6);
The bore of light reflection mirror (1) is greater than 250mm; Elasticity suspension support (4) is made up of center ball pivot (7), spring base (8) and four flat spring sheets (9).
2. Bidimensional large-diameter fast control reflection mirror according to claim 1 is characterized in that: gluing embedded invar nut is arranged in described light reflection mirror (1) the back support face, realize from light reflection mirror (1) back it being fixed.
3. Bidimensional large-diameter fast control reflection mirror according to claim 1, it is characterized in that: described light reflection mirror (1) xsect Cheng Shuan " arch form ", under the situation that guarantees reflecting surface complete sum catoptron rigidity, remove in the middle of the back of reflecting mirror and skirt materials, alleviate catoptron weight and reduce its moment of inertia around center of gravity.
4. Bidimensional large-diameter fast control reflection mirror according to claim 1, it is characterized in that: described light reflection mirror (1) xsect Cheng Shuan " arch form ", " arch form " space in the middle of light reflection mirror (1) back overlaps the diaxon intersection point of rotor rotation and the center of gravity of rotor.
5. Bidimensional large-diameter fast control reflection mirror according to claim 1, it is characterized in that: described support picture frame (2) material selection specific stiffness and heat transfer/heat radiation and the suitable aluminium alloy of thermal capacitance, by rational deployment, certain thickness four limit indent square plates have been designed on the structure.
6. Bidimensional large-diameter fast control reflection mirror according to claim 1 is characterized in that: described center ball pivot (7), make omnipotent circular hinges, and realize elastic deformation and the longitudinal stiffness position of rotor two sense of rotation kept; Described spring base (8) is a structure of stretching out four symmetries, contour boss on annulus, is beneficial to guarantee that 4 spring leafs (9) are contour apart from base (6); Four spring leafs (9) are separately fixed at by screw on four boss of spring base (8), and center ball pivot (7) is arranged in spring base (8) annulus middle position; Described four spring leafs (9), under the situation of taking all factors into consideration structure space and driving force, separately be arranged symmetrically in middle " arch form " space, light reflection mirror (1) back, radially realize to rotor two laterally and one keep around the position that optical axis rotate, realizing that axially rotor diaxon rotation center and center of gravity unify; Astrosphere (7), spring leaf (9) link by screw and the rotor that supports on the picture frame (2), realize the resiliency supported that the rotor bidimensional is rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100782582A CN101482643B (en) | 2009-02-23 | 2009-02-23 | Bidimensional large-diameter fast control reflection mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100782582A CN101482643B (en) | 2009-02-23 | 2009-02-23 | Bidimensional large-diameter fast control reflection mirror |
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| Publication Number | Publication Date |
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| CN101482643A CN101482643A (en) | 2009-07-15 |
| CN101482643B true CN101482643B (en) | 2010-09-22 |
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| CN2009100782582A Expired - Fee Related CN101482643B (en) | 2009-02-23 | 2009-02-23 | Bidimensional large-diameter fast control reflection mirror |
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| CN102981244B (en) * | 2012-12-25 | 2014-10-15 | 中国科学院长春光学精密机械与物理研究所 | Two-dimensional large-diameter transmission-type quick reflecting mirror |
| CN103293633B (en) * | 2013-07-02 | 2015-03-04 | 中国工程物理研究院总体工程研究所 | Adjustable support device used for obliquely placed big-caliber reflecting mirror |
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| CN111216108B (en) * | 2020-03-03 | 2022-10-18 | 中国科学院光电技术研究所 | Multi-state parallel multi-degree-of-freedom motion platform based on piezoelectric drive |
| CN112445134B (en) * | 2020-11-19 | 2021-09-28 | 北京航空航天大学 | Fast reflector online approximation self-adaptive control method considering incomplete modeling |
| CN114355555A (en) * | 2021-12-09 | 2022-04-15 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Two-dimensional reflector component |
| CN114460713B (en) * | 2021-12-28 | 2024-03-15 | 北京空间机电研究所 | Precise unloading structure of large-caliber reflector |
| CN114326096B (en) * | 2022-01-05 | 2024-03-22 | 成都大学 | Quick reflection mirror for image shift compensation |
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