CN100369720C - Space integration multifunction high precision dynamic universal rotating mechanism - Google Patents
Space integration multifunction high precision dynamic universal rotating mechanism Download PDFInfo
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- CN100369720C CN100369720C CNB2006100098838A CN200610009883A CN100369720C CN 100369720 C CN100369720 C CN 100369720C CN B2006100098838 A CNB2006100098838 A CN B2006100098838A CN 200610009883 A CN200610009883 A CN 200610009883A CN 100369720 C CN100369720 C CN 100369720C
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- rotation mechanism
- rotating mechanism
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- transmission shaft
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Abstract
The present invention relates to a space integration multifunction high-precision dynamic universal rotating mechanism which belongs to a dynamic universal rotating mechanism in satellite optical communication. The existing terminal sight mechanism has the problems of large moment of inertia, high requirements for thermal control to a satellite platform, low accuracy and complicated structure when installed. The space integration multifunction high-precision dynamic universal rotating mechanism comprises a direction rotating mechanism (1) and a pitching rotating mechanism (2) which are in the same structure and comprise a driving shaft (8), an outer shell (4), a bearing (7) arrangd in the outer shell (4), a hollow motor (5) and a coded disc (6), wherein the motor, the coded disc (6), the driving shaft (8) and the outer shell (4) are assembled into integration. The structure of the present invention has short swivel chains and has the advantages of high aiming control accuracy and light weight. The moment of inertia is small when the present invention is opreated, requirements for thermal control to the satellite platform is low, and the present invention is favorable for popularization and application.
Description
Technical field
The present invention relates to the dynamic universal rotating mechanism in a kind of satellite optical communication.
Background technology
In satellite optical communication, slightly to take aim at coarse alignment, the large area scanning that mechanism is responsible for finishing light beam and catch and slightly follow the tracks of, it is the core component of terminal.Traditional mechanism that slightly takes aim at adopts the horizontal tilt mode that (ground observing and controlling and observation device adopt this kind mode turntable more) is installed, and whole R-T unit is all along with turntable moves together, and shortcoming is that rotary inertia is big, and the thermal control of star upper mounting plate is required high.Terminal adopts periscopic two dimension turntable more on the present star, drives by gear transmission mode.This mode rotary inertia is little, the terminal major part in the satellite cabin, less demanding to the thermal control of star upper mounting plate.Shortcoming is that gear transmission mode makes the control accuracy of turntable descend, and structure is complicated.
Summary of the invention
Exist rotary inertia big at slightly taking aim at mechanism's installation now, not high to star upper mounting plate thermal control requirement height and precision, baroque problem, it is little to the invention provides a kind of rotary inertia, high and the space integration multifunction high precision dynamic universal rotating mechanism simple in structure of precision, it comprises azimuth rotation mechanism 1, pitch rotation mechanism 2 and reflective mirror 3, the pivot center of described azimuth rotation mechanism 1 and the pivot center of pitch rotation mechanism 2 are vertical setting, described reflective mirror 3 is two of being parallel to each other, the turning cylinder of two reflective mirrors 3 and azimuth rotation mechanism 1, the turning cylinder of pitch rotation mechanism 2 all is the miter angle setting and fixes by described azimuth rotation mechanism 1 and pitch rotation mechanism 2; Described azimuth rotation mechanism 1 structurally comprises power transmission shaft 8, described power transmission shaft 8 is connected with shell body 4 by bearing 7, between described power transmission shaft 8 and shell body 4, be provided with hollow motor 5 and code-disc 6, the rotor of described hollow motor 5 and power transmission shaft 8 are affixed, and the stator of hollow motor 5 and shell body 4 are affixed; Described code-disc 6 comprises card 6-1 and read head 6-2, and described card 6-1 and power transmission shaft 8 are affixed, and described read head 6-2 is fixed on the shell body 4; Described pitch rotation mechanism 2 is structurally identical with azimuth rotation mechanism 1, and shell body one end of pitch rotation mechanism 2 is fixed on power transmission shaft one end of azimuth rotation mechanism 1.
The motor of dynamic universal rotating mechanism of the present invention is a hollow motor, it is directly installed on the power transmission shaft, rotate directly drive code-disc rotation by power transmission shaft, the mode swivel-chain of this direct driving is short, need not gear drive and decelerator, solved traditional two-dimentional turntable because therefore the pointing accuracy decline problem that gear drive causes has aiming control accuracy height, the advantage that weight is little experimental results show that its aiming control accuracy can reach 10 " 20 ".The present invention adopts the incorporate design philosophy of miniaturization, has realized turntable, motor and photoelectric code disk assembling by single shafting, has greater advantage on volume and weight, and rotary inertia is little during work, and is less demanding to the thermal control of star upper mounting plate.It can finish the multi-tasks such as the satellite optical communication terminal is slightly taken aim at, scanned, tracking, is beneficial to and applies.
Description of drawings
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the left view of Fig. 1, and Fig. 3 is the A-A cutaway view of Fig. 1, and Fig. 4 is the B-B cutaway view of Fig. 1, and Fig. 5 is that the K of Fig. 1 is to view.
The specific embodiment
The specific embodiment one: present embodiment is a kind of space integration multifunction high precision dynamic universal rotating mechanism, it comprises azimuth rotation mechanism 1, pitch rotation mechanism 2 and reflective mirror 3, the pivot center of described azimuth rotation mechanism 1 and the pivot center of pitch rotation mechanism 2 are vertical setting, described reflective mirror 3 is two of being parallel to each other, and the turning cylinder of two reflective mirrors 3 and azimuth rotation mechanism 1, the turning cylinder of pitch rotation mechanism 2 all are the miter angle setting and fix by described azimuth rotation mechanism 1 and pitch rotation mechanism 2; Described azimuth rotation mechanism 1 structurally comprises power transmission shaft 8, described power transmission shaft 8 is connected with shell body 4 by bearing 7, between described power transmission shaft 8 and shell body 4, be provided with hollow motor 5 and code-disc 6, the rotor of described hollow motor 5 and power transmission shaft 8 are affixed, and the stator of hollow motor 5 and shell body 4 are affixed; Described code-disc 6 comprises card 6-1 and read head 6-2, and described card 6-1 and power transmission shaft 8 are affixed, and described read head 6-2 is fixed on the shell body 4; Described pitch rotation mechanism 2 is structurally identical with azimuth rotation mechanism 1, and shell body one end of pitch rotation mechanism 2 is fixed on power transmission shaft one end of azimuth rotation mechanism 1.
According to whole two-dimentional turret systems design (comprising drive system) miniaturization and light-weighted basic demand, the drive system of two-dimentional turntable mainly is made up of two hollow brushless DC servomotors in the present embodiment.Drive motors is the executive component in this dynamic universal rotating mechanism, and the electromagnetic torque that it provides is mainly as servo-control system inertia load required accelerating torque and the friction torque that overcomes transmission link.Motor be now can usefulness hollow motor, itself possesses the closed-loop control ability, the received signal disposable plates provides the speed of the formula that fixes really and position encoded, its positioning accuracy and corresponding time must be satisfied comprehensive requirement of The whole control system.The control feedback detection of two dimension turntable during the angle measurement code-disc requires to have higher precision to guarantee the control accuracy of turntable.The drive motors of present embodiment is a packaging structure, and the direct drive shaft cartridge with two-dimentional turntable azimuth rotation mechanism and pitch rotation mechanism of rotor is made into one, and this direct drive mode can improve control accuracy.Drive motors and angle measurement code-disc, power transmission shaft, shell body 4 are assembled into one, and compact conformation has been guaranteed the miniaturization and the lightweight of system.
The specific embodiment two: the bearing 7 in the described azimuth rotation of present embodiment mechanism 1 and the pitch rotation mechanism 2 all is two, and two bearings 7 are separately positioned on an end of hollow motor 5 and the other end of code-disc 6.Two bearings 7 can make the system architecture compactness concise, move more steady.
The specific embodiment three: the described dynamic universal rotating mechanism light-emitting window of present embodiment is directly elected 100mm as, and the groundwork environment is a satellite platform.Satellite will stand the sun, planet for a long time during rail the width of cloth according to and the space heating and cooling that cold and heat succeed each other, this will cause periodic high and low temperature acute variation.With time space is the environment of microgravity and high vacuum, require the anti-cold welding of turntable material, the surface is carried out special material and is handled, especially require light weight, volume is little, rotating accuracy is high, thereby in order to guarantee high strength and lightweight simultaneously, it is 4.51g/cm that the material of main part of whole turntable and key component is all selected proportion for use
3Tc4 (Ti6Al4V) titanium alloy.
Bearing also is main and the key component of this turntable, and the rotating accuracy of turntable depends primarily on the precision of bearing, and the Performance And Reliability of bearing depends on the material and the Technology for Heating Processing of bearing to a great extent.The inside and outside circle of bearing and steel ball are all selected the most frequently used GCr15 bearing steel for use, its processing technology, and heat-treatability, wearability are all good, and strength and stiffness are fit to make bearing, retainer aluminium bronze ZQAL10-3-1.5 (GB 1176).
The HY-DJ101 type hollow brushless torque motor that drive motors selects for use electrical engineering system of Harbin Institute of Technology to produce, torque capacity 1.5N.m, 6 °/s of maximum non-load speed.
The CZF-MP001 type absolute optical code disc that photoelectric code disk adopts Changchun Ward photoelectricity company to produce, 23 of resolution ratio, 21 of effective accuracies.
Claims (2)
1. space integration multifunction high precision dynamic universal rotating mechanism, it comprises azimuth rotation mechanism (1), pitch rotation mechanism (2) and reflective mirror (3), the pivot center of the pivot center of described azimuth rotation mechanism (1) and pitch rotation mechanism (2) is vertical setting, described reflective mirror (3) is two that are parallel to each other, and the turning cylinder of two reflective mirrors (3) and azimuth rotation mechanism (1), the turning cylinder of pitch rotation mechanism (2) all are the miter angle setting and fix by described azimuth rotation mechanism (1) and pitch rotation mechanism (2); It is characterized in that described azimuth rotation mechanism (1) structurally comprises power transmission shaft (8), described power transmission shaft (8) is connected with shell body (4) by bearing (7), between described power transmission shaft (8) and shell body (4), be provided with hollow motor (5) and code-disc (6), the rotor of described hollow motor (5) and power transmission shaft (8) are affixed, and the stator of hollow motor (5) and shell body (4) are affixed; Described code-disc (6) comprises card (6-1) and read head (6-2), and described card (6-1) is affixed with power transmission shaft (8), and described read head (6-2) is fixed on the shell body (4);
Described pitch rotation mechanism (2) is structurally identical with azimuth rotation mechanism (1), and shell body one end of pitch rotation mechanism (2) is fixed on power transmission shaft one end of azimuth rotation mechanism (1).
2. space integration multifunction high precision dynamic universal rotating mechanism according to claim 1, it is characterized in that the bearing (7) in azimuth rotation mechanism (1) and the pitch rotation mechanism (2) all is two, two bearings (7) are separately positioned on an end of hollow motor (5) and the other end of code-disc (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100098838A CN100369720C (en) | 2006-03-31 | 2006-03-31 | Space integration multifunction high precision dynamic universal rotating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100098838A CN100369720C (en) | 2006-03-31 | 2006-03-31 | Space integration multifunction high precision dynamic universal rotating mechanism |
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| CN1824470A CN1824470A (en) | 2006-08-30 |
| CN100369720C true CN100369720C (en) | 2008-02-20 |
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| CNB2006100098838A Expired - Fee Related CN100369720C (en) | 2006-03-31 | 2006-03-31 | Space integration multifunction high precision dynamic universal rotating mechanism |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630970B (en) * | 2009-08-14 | 2012-07-18 | 中国科学院上海光学精密机械研究所 | Satellite laser communication compound axis light tracking device and control method thereof |
| CN103968712A (en) * | 2014-05-14 | 2014-08-06 | 南通广兴气动设备有限公司 | Universal sighting telescope |
| CN104765146B (en) * | 2015-03-31 | 2017-04-12 | 中国科学院长春光学精密机械与物理研究所 | Large-angle scanning driving shaft system device of airborne photoelectric collimation system |
| CN110758770B (en) * | 2019-11-05 | 2022-01-07 | 长光卫星技术有限公司 | Ground aiming mechanism for space camera |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2204069Y (en) * | 1994-08-05 | 1995-07-26 | 电子工业部第五十四研究所 | Two axil aerial device with top stabilising platform |
| JP2001284940A (en) * | 2000-11-08 | 2001-10-12 | Towa Erekkusu:Kk | Satellite broadcast receiver |
| CN2694516Y (en) * | 2003-09-15 | 2005-04-20 | 上海赛天通信技术有限公司 | Vehicle mounted satellite communication antenna |
| US6911950B2 (en) * | 2003-01-30 | 2005-06-28 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry, Through The Communications Of Research Centre | Gimballed reflector mounting platform |
-
2006
- 2006-03-31 CN CNB2006100098838A patent/CN100369720C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2204069Y (en) * | 1994-08-05 | 1995-07-26 | 电子工业部第五十四研究所 | Two axil aerial device with top stabilising platform |
| JP2001284940A (en) * | 2000-11-08 | 2001-10-12 | Towa Erekkusu:Kk | Satellite broadcast receiver |
| US6911950B2 (en) * | 2003-01-30 | 2005-06-28 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry, Through The Communications Of Research Centre | Gimballed reflector mounting platform |
| CN2694516Y (en) * | 2003-09-15 | 2005-04-20 | 上海赛天通信技术有限公司 | Vehicle mounted satellite communication antenna |
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| CN1824470A (en) | 2006-08-30 |
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