CN101462599B - Novel terrestrial globe simulator for static state infrared horizon ground detection - Google Patents

Novel terrestrial globe simulator for static state infrared horizon ground detection Download PDF

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Publication number
CN101462599B
CN101462599B CN200810204568XA CN200810204568A CN101462599B CN 101462599 B CN101462599 B CN 101462599B CN 200810204568X A CN200810204568X A CN 200810204568XA CN 200810204568 A CN200810204568 A CN 200810204568A CN 101462599 B CN101462599 B CN 101462599B
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China
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earth
cold
simulator
hot plate
control
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CN200810204568XA
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Chinese (zh)
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CN101462599A (en
Inventor
张涛
吕银环
王磊
刘光远
刘学明
卢晋人
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中国科学院上海技术物理研究所
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Abstract

The invention discloses a novel earth simulator suitable for ground detection of a static infrared horizon sensor. During operation, four sets of roller screw rods drive a cold boundary of the earth simulator to move relative to a hot plate, thereby forming a dynamic earth simulation surface; a secondary optical system simulates the distance from outer space to the earth; a cold/hot plate component is accurately adjusted and the positions of the cold boundary and the hot boundary of the earth simulator are positioned; a hot plate surface on the cold/hot plate component is coated with Berlin black and is heated to simulate earth thermal radiation; a heater is made into heating slices and is adhered to the inner side of a heating body to simulate earth thermal radiation; a novel ground detection system of the static infrared horizon sensor realizes dynamic simulation of an outer space horizon circle; accurate movement of the four sets of roller screw rods and the location of the cold boundary realize dynamic simulation of the attitude angle of the static infrared horizon sensor and simulate the variation of satellite load attitude angle at high precision, thereby realizing attitude angle measurement and the detection of the static infrared horizon sensor on the earth simulator.

Description

The novel earth simulator for earth that the static state infrared horizon ground detection is used

Technical field:

The present invention relates to space science instrument detecting technology and equipment, be meant the novel earth simulator for earth that a kind of static state infrared horizon ground detection is used especially, it is applicable to the ground detection to the space static state infrared horizon.

Background technology:

Utilize the infrared horizon instrument of space exothermic body, have advantages such as high precision, good reliability, therefore generally adopted as datum target.Early stage infrared horizon instrument is applied to control the engine ignition of guided missile and is written into test.Begin on satellite, to use from February nineteen fifty-nine, successfully measured the attitude that satellite orbits the earth, since infrared horizon instrument compare with other attitude sensitive technology have simple and reliable and have higher attitude measurement accuracy (generally 0.1 the degree-0.5 the degree), so development rapidly, manned spaceship afterwards, particularly absolute orientation is scouted, meteorological, communication, ground money waits on the artificial satellite and is extensive use of, the space vehicle of emission mostly is to adopt infrared horizon instrument to realize attitude control at present, therefore, the development of infrared horizon instrument also becomes an individual branches science in the satellite attitude control.

Earth simulator for earth is exactly the instrument of the simulation earth, as the ground checkout equipment of infrared horizon instrument, mainly by the thermal source of represent earth with represent the low-temperature receiver background etc. of sky to form, controls the variation ratio of thermal source, low-temperature receiver and can simulate the various information of the earth, sky.Earth simulator for earth comes down to the various information in Simulated Spacecraft and the earth, day space, and a remote space is narrowed down in the slight earth simulator for earth.Simulate the earth that the multiple orbital attitudes satellite is seen on the ground in space, the mode of operation of simulation terrestrial radiation characteristic, be that radiance between the earth and space is poor, and can accomplish the conversion of infrared benchmark and visible light benchmark, for test performance and the stated accuracy use on the ground of star upper-part infrared earth sensor, therefore the precision of infrared earth sensor ground rating test height will directly have influence on satellite operating accuracy in orbit.

Infrared earth sensor roughly is divided into double cone scanned infrared horizon instrument, single circular cone infrared scan horizon instrument and static state infrared horizon three major types at present.At double cone scanned infrared horizon instrument and single circular cone infrared scan horizon instrument, the small-sized earth simulator for earth of double cone and small-sized collimation formula infrared earth simulator research and development are arranged respectively.And the static state infrared horizon principle of work is to utilize four optical heads directly the earth and the formed cold and hot border of space to be surveyed, radiosensitive by infrared horizon to the earth, Horizon circle position signal is provided, determine rolling and the pitch attitude angle of satellite with respect to local vertical line, when being used for initial condition satellite to the earth catch with smooth operation the time satellite attitude control.

The new infrared earth simulator for earth is as the dedicated ground performance test apparatus of one of static state infrared horizon development guarantee condition, it is the necessary means that realizes the assessment of static state infrared horizon performance figure ground test, the earths infrared image of seeing when utilizing new infrared earth simulator for earth analog satellite in orbit, promptly distributing corresponding to the earth and space infrared emittance gradient, is one of critical components of carrying out the static state infrared horizon development.

Summary of the invention:

The new infrared earth simulator for earth that provides a kind of suitable ground detection to use for the static state infrared horizon product is provided, solve static state infrared horizon ground test and performance figure evaluation problem, guarantee that static state infrared horizon can provide high-precision satellite attitude control.

The present invention is a kind of novel earth simulator for earth that detects usefulness on ground in the face of static state infrared horizon, is made up of following components, and four have the cold-hot plate component of driving device, four groups of earth analog temperature control system and four secondary optics telescopic systems.

Novel earth simulator for earth is to utilize four groups of cold-hot plate components to form the infrared border of earth Horizon circle jointly, simulate dynamically that the earth/space is cold and hot to pass across the border, accurately adjust and locate the position on the cold and hot border of earth simulator for earth by the secondary optics telescopic system, reach near the ideal boundary position, positional precision is controlled in the scope that necessarily should have.The temperature control of four topotype border cold-hot plate components is independently controlled with four earth analog temperature controllers respectively.The hot plate 301 of 4 cold-hot plate components is coated with Berlin black (emissivity 0.9), and is heated the thermal radiation of the simulation earth that heats up.Cold drawing 302 simulation space cold-scarce scapes in the cold-hot plate component.Heater design becomes heating sheet, and it is sticked on the inboard of the body of being heated, and isolates with thermal insulating material between the cold drawing 302 of heating sheet and simulation space simultaneously, prevents to carry out interchange of heat and the temperature build-up that makes the cold drawing 302 of simulation space.

The horizon instrument temperature control system mainly follows the inspection unit by 5 tunnel separate temperature difference control unit, temperature difference display instrument and multi way temperatures to be formed, and is configured in the special-purpose control housing.Every road control unit is made of digital temperature regulating control, SCR AC electric power controller and temperature thermocouple, forms the closed loop thermal control loop, as shown in Figure 6.The principle of work of temperature control system is to utilize 5 tunnel separate temperature difference control units to realize the PID adjustment by the digital temperature regulating control, control 4 blocks of hot plates 301 and hot plate 301 temperature difference with respect to cold drawing 302 respectively, display instrument and multi way temperature follow the inspection unit can show the hot plate and the current temperature difference of cold drawing.

Earth simulator for earth is by the accurate deviation (being the deviation of pitch angle and roll angle) that moves four blocks of cold drawings, 302 realization horizon instrument attitude angle of four groups of ball screws, static state infrared horizon carries out direct detection to the moving boundary of earth simulator for earth, thereby realizes the measurement of different attitude angle.Satisfying static state infrared horizon unit pixel resolution is survey precision guardian technique index: 0.625 ° of static state horizon pixel resolution, and this novel earth simulator for earth can emulation the attitude angle precision be 0.1 °.

Advantage of the present invention is:

1, novel topotype device is designed to the numerical control unitized construction, utilize four groups of cold-hot plate components to form earth falseface jointly, simulate dynamically that the earth/space is cold and hot to pass across the border, accurately adjust and locate the position on the cold and hot border of earth simulator for earth by the secondary optics telescopic system, reach near the ideal boundary position, positional precision is controlled in the scope that necessarily should have.This has provided an observed object that is equivalent to the Horizon circle fully concerning static state infrared horizon.

2, each cold and hot border is formed by a cold drawing and a hot plate in four groups of cold-hot plate components, and every group of cold drawing and hot plate are formed a load, is installed in respectively on each one dimension translation stage, and the motion by translation stage can make cold and hot border produce translation;

3, four one dimension translation stages: be divided into orthogonal two groups at grade, every group of coaxial line, the motion of translation separately of each translation stage; Translation stage controller: realize the independent of each translation stage state of kinematic motion is provided with and control; Possessing attitude angle changes continuously and function, attitude angle variation range be set: ± 12 °, attitude angle changes precision: 0.1 °; Be suitable for orbit altitude: 750Km~800Km;

4, the earth falseface that constitutes with cold and hot border, adopt good temperature control to keep cold and hot boundary temperature gradient, the time of heat of employing earth analog temperature control system is short, big, the cold and hot border of temperature rise amplitude temperature difference range of control is wide, temperature control precision is high, possesses the earth/space boundary infrared energy difference radiomimesis and regulatory function.The temperature of 4 blocks of hot plates of control is in heated perimeter below 80 ℃, and control accuracy reaches ± 0.5 ℃.Working temperature range: 20 ℃ ± 5 ℃;

5, in view of the earth simulator for earth oad bigger, the assembly part is many, working accuracy and assembly precision are difficult to satisfy part position accuracy demand each other, adopt simple in structure, the secondary optical system that is easy to dismantle, the border imaging of the cold and hot assembly that the simulation Horizon is round is to the infinite distance, make the simulator structure compact more, simulate the Horizon circle more truly, utilize four groups of one dimension ball screw translation mechanisms to move cold drawing, by the digital control regulatory function that makes cold drawing assembly and hot plate assembly realize four borders on cold and hot border, guarantee the adjustability and the accuracy requirement of the emulation of Horizon circle.

Description of drawings:

Fig. 1 is a Horizon circle illustraton of model of the present invention.

Fig. 2 is the optic system of infrared static earth sensor illustraton of model;

Wherein: 100---static state infrared horizon;

110---the visual field of optical head;

120X---the axis of rolling of direction horizon instrument;

130---the pitch axis of Y direction horizon instrument;

140---the earth's core direction;

200---optical lens;

210,201-1,210-2,210-3,210-4---detector;

220---filter;

230---earth boundary direction;

300---outer earth border.

Fig. 3 is a novel earth analog system schematic diagram of the present invention;

Wherein: 101---210-2 and 210-4 or 210-1 and the spacing of 210-3 two center probes when zero-bit;

105---the subtended angle between 210-2 and 210-4 or 210-1 and 210-3 two probes;

301---hot plate;

302---cold drawing;

303---the boundary displacement amount;

500---secondary optical system.

Fig. 4 always schemes for the novel earth simulator for earth structure of static state infrared horizon among the present invention;

Wherein:

10---mounting base;

20---light correcting structure Adjustment System;

311---the hot plate support;

312---the cold drawing support;

400,401,402,403,405,406,408---rigid frame;

404---guide groove;

407---shockproof skirt.

Fig. 5 is the new infrared horizon instrument earth simulator for earth electric machine control block diagram among the present invention.

Fig. 6 is the secondary optical system assembly drowing among the present invention;

501,502,504,505---trim ring;

503---spacer ring;

506,508---non-spherical lens;

507---lens barrel.

Fig. 7 is the infrared detector test platform-temperature control box among the present invention.

The specific embodiment

Provide better embodiment of the present invention according to Fig. 1-Fig. 6 below, and described in detail, so that understand architectural feature of the present invention and functional characteristics better, it is to be noted, given embodiment is in order to describe the present invention in detail, rather than is used for limiting the scope of the invention.

As shown in Figure 1, in the Horizon circle illustraton of model, the overradiation band of the earth that horizon instrument will detect and space, that is Horizon circle; The earth of seeing from satellite is equivalent to the big disk that a mean flow rate temperature 4K cold-scarce scape is about 220~240K, and we claim that disk border is the Horizon circle.

As shown in Figure 2, in the static state infrared horizon optical model system diagram, satellite is reduced to 1 G, Y direction 130 is the pitch axis of horizon instrument, directions X 120 is the axis of rolling of horizon instrument, optical head visual field 110 is ± 10 °, be imaged as the infrared earth boundary image by optical lens 200 and 220 pairs of earth borders 300 of infrared fileter, receive image by detector 210, the light that is received from the earth's core direction 140 and earth boundary direction 230 all comes from the collimated light of infinite distant place, and the horizontal circle of seeing from the 751Km low orbit is that subtended angle is Circular cone bottom surface circumference.The collimated light that comes from infinite distant place is to realize by secondary optical system 500.

As shown in Figure 3, in the novel earth analog system schematic diagram, static state infrared horizon four infrared ray array ccd detector 210-1,210-2,210-3,210-4 arranged, the angle of field 110 of each detector is ± 10 °, the subtended angle 105 between two relative probes is 127 °; Corresponding bottom test platform is with four cold and hot borders 110 at the last 90 ° of intervals of circle respectively for four probes, and the distance of 500 front ends is 264mm from the border to the secondary optical system when zero-bit, the amount of movement pact ± 75mm on corresponding each the cold and hot border of the angle of field of each probe; Test platform is made up of four one dimension translation stages, be divided into orthogonal two groups at grade, every group of coaxial line, 302 is the room temperature cold drawing in each translation stage, 301 for setting the hot plate of the temperature difference, 303 is the attainable displacement pact ± 150mm in cold and hot border, the motion of translation separately of each translation stage, two probes when zero-bit between distance 101 be 1000mm; The state of kinematic motion of each translation stage is realized independent the setting and control by the translation stage controller; Four groups of cold and hot borders 300 being made up of four cold drawings 302 and four hot plates 301 are four infrared detectors of 210-1,210-2,210-3,210-4 of corresponding static state horizons respectively, these four groups of boundary combinations are divided a circumference equally with 90 ° of intervals, this flexible mistake fits over preceding secondary optical system 500 imagings of these four infrared optics probes to the infinite distance, and emulation becomes the Horizon circle truly; Four cold and hot borders are installed in respectively on four groups of one dimension translation stages, and the motion by translation stage can make cold and hot border 300 produce translations; The translation stage controller will be controlled four independent respectively moving in cold and hot border 300 on the one hand, will be finally inversed by the visual angle change amount of relative infrared detector on the other hand according to the amount of movement of the two groups of cold and hot border of coaxial line relative zeros; Perhaps control cold and hot border and move to the relevant position according to two groups of given visual angle change amounts; The visual angle survey precision is 0.1 °.The temperature difference of cold drawing and hot plate realizes being provided with synchronously and control by temperature controller.

As shown in Figure 4, the total figure of the novel earth simulator for earth structure of static state infrared horizon of the present invention comprises the rigid frame 400,401,402,403,405,406 and 408 with the accuracy requirement of certain coplane conllinear, is used to install and fix infrared detector, translation stage and cold and hot edge load etc.The test platform framed structure can be calibrated the conllinear coplane, detector attachment face on four borders and the tram at the parallel of cold and hot boundary plane and center, relative four borders of detector mounting hole.Four groups of earth that constitute earth simulator for earth are simulated the cold drawing support 312 and assembly 302 of cold and hot edge load, hot plate support 311 and hot plate assembly 301, and by temperature controlling system simulation global warming control with by the light correcting structure Adjustment System 20 accurate cold and hot boundary positions of adjusting and locating earth simulator for earth.Static state infrared horizon is installed on the pedestal 10, pedestal 10 is the middle opening square hole connecting panels of (being used for CCD probe cabling), and be equipped with two handles, conveniently be installed on the base plate of framework, pedestal 10 has accurate locating dowel pin, can guarantee the optic system of infrared static earth sensor secondary optical system 500 above the registration light correcting structure Adjustment System 20 exactly, to guarantee cold and hot border emulation space Horizon circle more accurately.Shockproof skirt 407 can guarantee the aseismicity of general frame, adjustable height and be convenient to install and adjust.Guide groove 404 can guarantee the adjustment of cold drawing backing positions.

The infrared detector test platform is built rigid frame by 60 * 60 aluminium section bars and is of a size of 1151.2mm * 1151.2mm * 1041mm as shown in Figure 4.The unique mode of building in bottom not only is convenient to the installation and the adjustment of cast aluminium support, the demand that satisfies hidden cabling that the structure of aluminium section bar hollow can also requirements at the higher level.Moving cell and hot plate are by the cast aluminium stent support.And pop one's head under the situation of cold drawing and hot plate distance satisfying CCD, the cast aluminium support all can be made 15mm with interior adjustment at both direction, to satisfy the requirement to the CCD probe distance of more adjustment cold drawings and hot plate.Control moving of four groups of one dimension translation stages by four groups of ball screws, four groups of ball screws are equipped with DR110-300+ Fuji servomotor, total travel 300mm, unidirectional stroke 150mm; Accuracy of positioning is less than 200um.

Fig. 5 is a new infrared horizon instrument earth simulator for earth electric machine control block diagram, four groups of cold and hot borders among the present invention are to be subjected to the hot plate of temperature controller control and the dynamic boundary of the cold drawing composition that moved by four groups of step motor control respectively, as shown in Figure 5, four groups of step motor control are sent control command to the electric machine control plate by PC respectively, and the position limiting device carries spacing instruction to realize the spacing of cold and hot border range of movement for the electric machine control plate.The electric machine control plate sends moving direction and apart from instructing the motor-driven plate, coder is encoded control by three-phase controlling and driving motor to the motor-driven plate, realizes the mobile control of 4 groups of cold and hot edges of boards circle.

Fig. 6 illustrates secondary optical system 500 assembly drowings, as shown in the figure, adopts two non-spherical lenses 506 and 508 secondary optical systems that constitute, and realizes the imaging on four groups of cold and hot borders round with the emulation Horizon to the infinite distance.Lens barrel 507, spacer ring 503 are assembled into secondary optical system with trim ring 501,502,504,505 with eyeglass, and 300 are cold and hot boundary surface.By being collimated light behind the infrared secondary optical system of thermal radiation signal process that it sent, to realize the emulation of infinite distant place Horizon circle.

Fig. 7 is infrared detector test platform-temperature control box, four groups of cold and hot borders among the present invention are to be subjected to the hot plate of temperature controller control and the dynamic boundary of the cold drawing composition that moved by four groups of step motor control respectively, as shown in Figure 7, four groups of temperature controls are divided into 4 passage A, B, C, D, closed loop by heating arrangement, temperature measuring equipment and temperature regulating device are formed is connected electric power system and clearing lamp jointly with the parallel connection of room temperature control module.

Claims (6)

1. earth simulator for earth that the static state infrared horizon ground detection is used, it is characterized in that: it has the cold-hot plate component of driving device, four groups of earth analog temperature control system and four secondary optics telescopic systems by four and forms, the cold borderline phase that is driven cold drawing (302) simulation by driving device is for the mobile dynamic earth falseface of forming of hot plate (301), by the distance of secondary optical system (500) emulation space to the earth, driving device is accurately adjusted cold-hot plate component and is located the position on the cold and hot border of earth simulator for earth.
2. the earth simulator for earth that a kind of static state infrared horizon ground detection according to claim 1 is used is characterized in that: described four cold-hot plate components that have driving device are uniform on circumference by 90 °.
3. the earth simulator for earth that a kind of static state infrared horizon ground detection according to claim 1 is used is characterized in that: described driving device is that displacement (303) is ± 150mm by the accurate mobile station of motor-driven ball screw.
4. the earth simulator for earth that a kind of static state infrared horizon ground detection according to claim 1 is used, it is characterized in that: described hot plate (301) is the aluminium sheet that posts heating plate, the surface is coated with Berlin black, and heated perimeter is below 80 ℃, temperature control precision ± 0.5 ℃.
5. the earth simulator for earth that a kind of static state infrared horizon ground detection according to claim 1 is used, it is characterized in that: described temperature controlling system by 5 tunnel separate temperature difference control unit, temperature difference display instrument and multi way temperatures follow the inspection unit form, be configured in the special-purpose control housing; Every road control unit is made of digital temperature regulating control, SCR AC electric power controller and temperature thermocouple, form the closed loop thermal control loop, 5 tunnel separate temperature difference control units are realized the PID adjustment by the digital temperature regulating control, control the temperature difference of 4 blocks of hot plates (301) with respect to cold drawing (302) respectively, display instrument and multi way temperature follow the inspection unit can show the hot plate (301) and the current temperature difference of cold drawing (302).
6. the earth simulator for earth that a kind of static state infrared horizon ground detection according to claim 1 is used is characterized in that: the telescopic system that described secondary optical system (500) is made up of two non-spherical lenses.
CN200810204568XA 2008-12-15 2008-12-15 Novel terrestrial globe simulator for static state infrared horizon ground detection CN101462599B (en)

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CN106595708B (en) * 2016-11-30 2019-09-27 中国科学院上海技术物理研究所 A kind of polarity based on linear array earth sensor ground moding track earth analogy method
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