CN103885458A - Fast reflection mirror scanning tracking system for aerospace imaging field and method thereof - Google Patents

Fast reflection mirror scanning tracking system for aerospace imaging field and method thereof Download PDF

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Publication number
CN103885458A
CN103885458A CN201410020863.5A CN201410020863A CN103885458A CN 103885458 A CN103885458 A CN 103885458A CN 201410020863 A CN201410020863 A CN 201410020863A CN 103885458 A CN103885458 A CN 103885458A
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China
Prior art keywords
azimuth
pitch axis
axis rotating
rotating
azimuth axis
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CN201410020863.5A
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Chinese (zh)
Inventor
王晟玮
王跃明
庄晓琼
肖喜中
鲍智康
郎均蔚
黄文俊
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Shanghai Institute of Technical Physics of CAS
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Shanghai Institute of Technical Physics of CAS
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Priority to CN201410020863.5A priority Critical patent/CN103885458A/en
Publication of CN103885458A publication Critical patent/CN103885458A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a fast reflection mirror scanning tracking system for the aerospace imaging field and a method thereof. The functions of the fast reflection mirror scanning tracking system mainly comprise the scanning, acquisition and tracking of a target. The completion of the scanning, acquisition and tracking of the target mainly relies on a 2D rotation mechanism. The characteristics of a horizontal light machine structure and a reflection mirror light machine structure are mixed in the 2D rotation mechanism which belongs to a mixed light machine structure. The advantages of the two structures are combined, the scanning in the range of 360 degrees can be provided, the rotation inertia of a pitch axis mechanism can be reduced, the rapid response performance of a pitch axis is greatly raised, and thus the ability of the scanning, acquisition and tracking of the target is strengthened.

Description

For the fast mirror scan tracing system and method for Aero-Space imaging field
Technical field:
The present invention relates to optoelectronic scanning tracking technique field, be specifically related to a kind of fast mirror scan tracing system and method for Aero-Space imaging field.
Background technology:
Optoelectronic scanning tracking technique has become Aero-Space imaging field target acquisition and has adopted important technological means, wherein accurately scanning and accurate aligning are the gordian techniquies of obtaining moving target information, by the line trace of going forward side by side of optoelectronic scanning tracking technique target acquisition, outwards provide target real-time azimuth information.
In optoelectronic scanning tracking technique, sweep type imager adopts optical mechaical scanning imaging mode, it is by the mechanical motion of scanning lens, make detector by optical system with a very little instantaneous field of view, pass through order " seeing " scan line all parts.Under the driving of pitching motor, can realize the rotation of directional mirror pitching scope, and under the driving of azimuth-drive motor, can realize the rotation of the bearing range of directional mirror.The structure species that structurally optoelectronic scanning is followed the tracks of is divided into two kinds: altitude azimuth form mechanical-optical setup, mirror type mechanical-optical setup.
Altitude azimuth form mechanical-optical setup is exactly that optical system and imaging system are installed on the pitch axis of structure or the platform of azimuth axis, along with pitch axis rotation together with azimuth axis, can realize scanning and the tracking of 360 ° of field ranges.
Mirror type mechanical-optical setup is more novel organization plan, the feature of this mirror type optical mechanism is: optical system and imaging system are installed on fixed pedestal, only depend on one or two plane mirrors to do rotatablely moving of tracking target, with the function that reaches scanning and follow the tracks of.
Summary of the invention:
The present invention proposes a kind of fast mirror scan tracing system and method for Aero-Space imaging field.This system has been mixed the feature of altitude azimuth form mechanical-optical setup and catoptron mechanical-optical setup, belong to hybrid mechanical-optical setup, system synthesis both advantages, the scanning of 360 ° of scopes can be provided, also can complete rapid scanning and the tracking of pitch axis, the scanner uni acquisition and tracking of realize target.
A kind of fast mirror scan tracing system for Aero-Space imaging field, as shown in Figure 1, comprise azimuth axis rotating mechanism 1, azimuth axis mounting platform 2, optics mounting bracket 3, pitch axis rotating mechanism 4, directional mirror 5, pitch axis control system 6, azimuth axis control system 7.
Directional mirror 5 is installed on pitch axis rotating mechanism 4 inside, drive rotation by pitch axis rotating mechanism 4, pitch axis rotating mechanism 4 is arranged on azimuth axis mounting platform 2 by optics mounting bracket 3, and azimuth axis rotating mechanism 1 drives azimuth axis mounting platform 2 to drive whole system to carry out the rotation of azimuth direction.Azimuth axis control system 7 control azimuth axle rotating mechanisms 1 rotate, and pitch axis control system 6 is controlled pitch axis rotating mechanism 4 and rotated.
Described azimuth axis rotating mechanism 1 adopts single motor direct-drive or many motors jointly to drive, and while adopting single motor direct-drive, uses permagnetic synchronous motor, its straight footpath≤400mm, and peak value moment≤1Nm, torque ripple is number≤10%;
Described azimuth axis rotating mechanism 1 configures incremental optical-electricity encoder or absolute optical encoder, and the angle Wei of scrambler puts Jing Du≤0.5 ", diameter≤1000mm;
Described pitch axis rotating mechanism 4 adopts the coaxial installation of motor directly to drive directional mirror motion, and motor is finite corner DC brushless electric machine, straight footpath≤200mm, and peak value moment≤0.2Nm, torque ripple is number≤5%;
Described pitch axis rotating mechanism 4 configures incremental optical-electricity encoder or absolute optical encoder, and the angle Wei of scrambler puts Jing Du≤0.5 ", diameter≤1000mm.
Described pitch axis control system 6 major functions are: a) according to the angle position data of photoelectric encoder, permagnetic synchronous motor is driven, b) communicate with azimuth axis control system 7 and other equipment;
Described azimuth axis control system 7 major functions are: a) according to the angle position data of photoelectric encoder, permagnetic synchronous motor is driven, b) communicate with pitch axis control system 6 and external unit.
Concrete scanning and tracking step are as follows:
1), when instrument moves, pitch axis control system 6 is moved to motor direct-drive directional mirror 5 according to the circular angular transducer of installing on pitch axis rotating mechanism 4;
2) slewing area of azimuth axis rotating mechanism 1 is 360 °, 0 ° of sweep velocity/s-30 °/s, follows the tracks of 50 °/s of peak acceleration 2;
3) slewing area of pitch axis rotating mechanism 4 is ± 30 °, 0 ° of sweep velocity/s-60 °/s, follows the tracks of 1000 °/s of peak acceleration 2;
4) azimuth axis control system 7 according on azimuth axis rotating mechanism 1 install circular angular transducer to motor direct-drive azimuth axis mechanism kinematic;
5) pitch axis control system 6 is interconnected by communication bus with azimuth axis control system 7, when being mainly fast mirror scan tracing system and carrying out targeted scans, provides the position correction alignment function of azimuth axis and pitch axis;
6), under scan pattern, azimuth axis rotating mechanism 1 and pitch axis rotating mechanism 4 are realized the alignement of two shaft positions by communication link;
7), under tracing mode, azimuth axis control system 7 and pitch axis control system 6 are accepted the position signalling of outside input, respectively azimuth axis rotating mechanism 1 and pitch axis rotating mechanism 4 are located in real time, complete following function.
The invention has the advantages that: the feature of having mixed altitude azimuth form mechanical-optical setup and catoptron mechanical-optical setup, belong to hybrid mechanical-optical setup, combine both advantages, the scanning of 360 ° of scopes both can be provided, also reduced the moment of inertia of pitch axis mechanism simultaneously, greatly improve the fast-response energy of pitch axis, strengthened the ability of the scanner uni acquisition and tracking of target.
Accompanying drawing explanation:
Accompanying drawing 1 is general diagram of the present invention.
Accompanying drawing 2 is scanning theory figure.
Embodiment:
According to summary of the invention, the present embodiment has built a kind of fast mirror scan tracing system for Aero-Space imaging field, as shown in Figure 1.Wherein the design parameter of various piece and design are as follows:
Photoelectric encoder: the increment photoelectric code disk circle grating that adopts reinshaw company is that RESM2U-SA550, reading head are that T2600-3M, segmentation head are TI0400A12A, and diameter is 550mm, system accuracy 1 ".
Permagnetic synchronous motor: adopt the RBE02110B AC permanent magnet synchronous motor of kollmorgen company, lasting stalling torque is 0.952Nm, and peak torque is 2.55Nm, and quality is 0.585kg.
Finite angle motor: electricity 21 finite corner DC moment electric motors of developing in employing, 60 ° of slewing areas, peak torque is 0.8Nm.

Claims (2)

1. the fast mirror scan tracing system for Aero-Space imaging field, comprise azimuth axis rotating mechanism (1), azimuth axis mounting platform (2), optics mounting bracket (3), pitch axis rotating mechanism (4), directional mirror (5), pitch axis control system (6) and azimuth axis control system (7), is characterized in that:
Described directional mirror (5) is installed on the inside of pitch axis rotating mechanism (4), drive and rotate by pitch axis rotating mechanism (4), pitch axis rotating mechanism (4) is arranged on azimuth axis mounting platform (2) by optics mounting bracket (3), azimuth axis rotating mechanism (1) drives azimuth axis mounting platform (2) to drive whole system to carry out the rotation of azimuth direction, azimuth axis control system (7) control azimuth axle rotating mechanism (1) rotates, and pitch axis control system (6) is controlled pitch axis rotating mechanism (4) and rotated;
Described azimuth axis rotating mechanism (1) adopts single motor direct-drive or many motors jointly to drive, and while adopting single motor direct-drive, uses permagnetic synchronous motor, its straight footpath≤400mm, and peak value moment≤1Nm, torque ripple is number≤10%;
Described azimuth axis rotating mechanism (1) configuration incremental optical-electricity encoder or absolute optical encoder, the angle Wei of scrambler puts Jing Du≤0.5 ", diameter≤1000mm;
Described pitch axis rotating mechanism (4) adopts the coaxial installation of motor directly to drive directional mirror motion, and motor is finite corner DC brushless electric machine, straight footpath≤200mm, and peak value moment≤0.2Nm, torque ripple is number≤5%;
Described pitch axis rotating mechanism (4) requires to use photoelectric encoder, and angle Wei puts Jing Du≤0.5 ", diameter≤1000mm, is incremental optical-electricity encoder or absolute optical encoder.
2. a method for a kind of fast mirror scan tracing for Aero-Space imaging field based on system described in claim 1, is characterized in that comprising the following steps:
1), when instrument moves, pitch axis control system (6) is moved to motor direct-drive directional mirror (5) according to the upper circular angular transducer of installing of pitch axis rotating mechanism (4);
2) slewing area of azimuth axis rotating mechanism (1) is 360 °, 0 ° of sweep velocity/s-30 °/s;
3) slewing area of pitch axis rotating mechanism (4) is ± 30 °, 0 ° of sweep velocity/s-60 °/s;
4) the circular angular transducer that azimuth axis control system (7) is above installed according to azimuth axis rotating mechanism (1) is to motor direct-drive azimuth axis mechanism kinematic;
5) pitch axis control system (6) and azimuth axis control system (7) are interconnected by communication bus, when being mainly fast mirror scan tracing system and carrying out targeted scans, provide the aligned in position function of azimuth axis and pitch axis;
6), under scan pattern, azimuth axis rotating mechanism (1) aligns with the position correction that pitch axis rotating mechanism (4) is realized diaxon by communication link;
7) under tracing mode, azimuth axis control system (7) and pitch axis control system (6) are accepted the position signalling of outside input, respectively azimuth axis rotating mechanism (1) and pitch axis rotating mechanism (4) are located in real time, complete following function.
CN201410020863.5A 2014-01-17 2014-01-17 Fast reflection mirror scanning tracking system for aerospace imaging field and method thereof Pending CN103885458A (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN105835057A (en) * 2015-12-01 2016-08-10 中国科学院上海技术物理研究所 Two-dimensional pointing mechanism for space optical remote sensing instrument
CN105912029A (en) * 2016-03-30 2016-08-31 上海卫星工程研究所 Satellite scanning pendulum mirror control device for voice coil motor driving
CN106526832A (en) * 2016-12-02 2017-03-22 北京空间机电研究所 Two-dimensional pointing servo control method and system
CN110715795A (en) * 2019-10-14 2020-01-21 中国科学院光电技术研究所 Calibration and measurement method for fast reflector in photoelectric tracking system

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CN203773357U (en) * 2014-01-17 2014-08-13 中国科学院上海技术物理研究所 Fast reflector scanning and tracking system applied to aerospace imaging field

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105835057A (en) * 2015-12-01 2016-08-10 中国科学院上海技术物理研究所 Two-dimensional pointing mechanism for space optical remote sensing instrument
CN105912029A (en) * 2016-03-30 2016-08-31 上海卫星工程研究所 Satellite scanning pendulum mirror control device for voice coil motor driving
CN106526832A (en) * 2016-12-02 2017-03-22 北京空间机电研究所 Two-dimensional pointing servo control method and system
CN106526832B (en) * 2016-12-02 2019-04-09 北京空间机电研究所 A kind of two-dimensional pointing mechanism method of servo-controlling and system
CN110715795A (en) * 2019-10-14 2020-01-21 中国科学院光电技术研究所 Calibration and measurement method for fast reflector in photoelectric tracking system
CN110715795B (en) * 2019-10-14 2021-06-01 中国科学院光电技术研究所 Calibration and measurement method for fast reflector in photoelectric tracking system

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Application publication date: 20140625