CN102981074A - Interior charging and discharging characteristic stimulation test system and method of high-power part - Google Patents

Interior charging and discharging characteristic stimulation test system and method of high-power part Download PDF

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Publication number
CN102981074A
CN102981074A CN2012104728004A CN201210472800A CN102981074A CN 102981074 A CN102981074 A CN 102981074A CN 2012104728004 A CN2012104728004 A CN 2012104728004A CN 201210472800 A CN201210472800 A CN 201210472800A CN 102981074 A CN102981074 A CN 102981074A
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vacuum
target chamber
sample
electron
electron accelerator
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柳青
李得天
陈益峰
秦晓刚
汤道坦
王俊
史亮
孔风连
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510 Research Institute of 5th Academy of CASC
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510 Research Institute of 5th Academy of CASC
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Abstract

The invention relates to an interior charging and discharging characteristic stimulation test system and method of a high-power part and belongs to the technical field of space testing. The interior charging and discharging characteristic stimulation test system comprises an electronic accelerator, a vacuum air exhausting group, a vacuum target chamber, a testing chamber and an electric current loop arranged between the vacuum target chamber and the testing chamber, wherein a sample table, an insulating support, a non-contactable potentiometer probe and a faraday cup are arranged in the vacuum target chamber; and an electronic accelerator control system, the non-contactable potentiometer probe, a beam monitoring instrument, an oscillometer, a driving mechanism, an electronic load and a vacuum gauge are arranged in the testing chamber. High-power part samples are filled in the interior charging and discharging characteristic stimulation test system through high-energy electrons, the oscillator is opened for monitoring discharging signals in the samples, and potential on the surfaces of the samples can be tested through the non-contactable potentiometer probe. The interior charging and discharging characteristic stimulation test method measures medium charging potential in a sensing method, and the charging and discharging effect of materials cannot be influenced.

Description

A kind of high-power components interior charge-discharge characteristic simulation experiment system and method
Technical field
The present invention relates to a kind of high-power components interior charge-discharge characteristic simulation experiment system and method, belong to the space technical field of measurement and test.
Background technology
High-power parts are the electric components that have larger input-output power in the inside satellite power-supply system, such as satellite solar cell battle array driving mechanism (SADA), satellite power supply, solar cell array.
For all kinds of high-power parts that use in the satellite, need to carry out the deep layer charge effects and estimate ground simulation test.So-called deep layer charge effects mainly is that the high energy electron by extraterrestrial radiation band (3-7Re) causes, is to cause middle and high track (MEO and GEO) satellite failure and unusual main cause.The energy of these high energy electrons mainly is positioned at the 0.1-10MeV scope, has very strong penetration capacity, can penetrate in the dielectric that the satellite top layer enters the satellite member, thereby produce charge effects.Deep layer charging usually occur in electronic system around, thereby more direct to the harm of the work of satellite system.Along with the use of a large amount of new materials in the satellite high-power parts, satellite deep layer charging guard technology becomes one of gordian technique that the development long-life satellite must solve.Therefore carry out the research of satellite deep layer charging guard technology, carry out simulation test on ground, charged protection has great significance for satellite.And still be in the starting stage aspect the charge-discharge characteristic simulation test of high-power parts ground at present, not corresponding rationally efficient system and method.
Summary of the invention
The invention provides a kind of high-power components interior charge-discharge characteristic simulation experiment system and method, space environment that can the high-power parts charge-discharge performance of simulated high-pressure obtains surface potential and the discharge scenario of high-power component materials.
For achieving the above object, technical scheme of the present invention is as follows.
A kind of high-power components interior charge-discharge characteristic simulation experiment system, described system comprises electron accelerator, vacuum suction group, vacuum target chamber, test cabinet, and the electric current loop between vacuum target chamber and test cabinet; In vacuum target chamber, be provided with sample stage, insulating support, contactless pot probe, Faraday cup; In test cabinet, be provided with electron accelerator control system, contactless pot, beam monitoring instrument, oscillograph, driving mechanism, electronic load, vacuum meter; Its relative position and annexation are as follows:
Electron accelerator is positioned at the vacuum target chamber top;
Inner at vacuum target chamber, sample stage is fixed on the vacuum target chamber bottom surface, and installing insulating support on sample stage is placed high-power parts sample at insulating support; The tip of contactless pot probe is positioned at directly over the high-power parts sample tested point, approaches with sample but does not contact; Faraday cup is positioned at the radiation scope of electron accelerator, its receiving plane and electron accelerator over against; The vacuum suction group is connected with vacuum target chamber;
The electron accelerator control system is connected with electron accelerator; Contactless pot is connected with contactless pot probe; The beam monitoring instrument is connected with Faraday cup; Wire one end is connected with high-power parts sample, and the other end is connected with electronic load by the center pit of electric current loop; Oscillograph is connected with electric current loop; Driving mechanism is connected with high-power parts sample; Vacuum meter is connected with vacuum target chamber;
Preferred described oscillographic bandwidth is more than the 200MHz.
Preferably around high-power parts sample, being provided with a circle thickness is that the above sheet lead of 2.5mm protects;
Wherein, acting as of electron accelerator produces high-power electron beam, and space environmental simulation bombards high-power parts sample;
Acting as of contactless pot and contactless pot probe monitored the current potential of high-power parts sample surfaces;
Acting as of beam monitoring instrument and Faraday cup measured the beam current density that electron accelerator produces, and makes the electron accelerator control system control space environmental simulation to electron accelerator;
Acting as of driving mechanism and electronic load can work high-power parts sample;
Electric current loop and oscillographic acting as by the discharge scenario of electric current loop working sample, and show in oscillograph.
A kind of high-power components interior charge-discharge characteristic simulation experiment system and method, described method step is as follows:
Step 1, according to Weber formula (1), determine energy and the beam current density of the incident electron that electron accelerator provides;
R = 0.55 E e [ 1 - 0.9481 ( 1 + 3 E e ) ] - - - ( 1 )
Wherein, Ee is beam energy, and unit is MeV; R is range, and unit is g/cm 2
Pass between actual incident degree of depth x and the range R is: R=ρ x, ρ are the density of high-power parts specimen material, and unit is g/cm 3The value of x measures by the normal experiment means, calculates Ee.
According to orbit parameter, select the beam current density more more abominable than orbital environment, unit is 10pA/cm 2
Step 2, high-power parts sample is placed in the vacuum target chamber, makes electronics can vertically inject high-power parts sample;
Step 3, close vacuum target chamber, by the vacuum suction group it vacuumized, to vacuum tightness less than 9 * 10 -3Pa opens electron accelerator and makes its electron emission; Beam current density by Faraday cup and beam monitoring instrument measurement electron accelerator electron emission is adjusted to beam current density the numerical value of determining in the step 1;
Step 4, open driving mechanism and electronic load, make high-power parts sample normal operation, under the high energy electron environment of in step 1, determining, high energy electron is injected sample surfaces, open simultaneously oscillograph, regulate triggering level in 100mV, the discharge signal of monitoring sample interior.
Step 5, open contactless pot, the current potential of test sample surface.
Beneficial effect
1. the invention provides a kind of high-power components interior charge-discharge characteristic simulation experiment system, according to the projectile energy height, choosing thickness is that the above sheet lead of 2.5mm protects around high-power parts, to reduce the scattering problems of internal electron, also can suppress to be scattered electronics and overflow.
2. the invention provides a kind of high-power components interior charge-discharge characteristic simulation experiment method, can monitor the space high energy electron of ground simulation and inject interior discharge pulse signal and the local medium parts surface current potential that the high-power parts produce.Described method by electron accelerator at ground simulation space high energy electron, with the high-power components interior of electronic injection.Utilize contactless pot probe that high-power parts are carried out contactless potential monitoring, by monitoring current pulse and electric power outputting current, judge whether discharge occurs in the high-power parts or have the power ring short circuit to occur.Described method adopts the method measuring media charging potential of induction, can not affect the material charging and discharging effects.
Description of drawings
Fig. 1 is the structural representation of high-power components interior charge-discharge characteristic simulation experiment system of the present invention.
Fig. 2 is that embodiment tests the SADA outer media potential diagram that obtains.
Wherein, 1-electron accelerator; The 2-vacuum target chamber; 3-electron accelerator control system; The contactless pot of 4-; 5-beam monitoring instrument; The 6-oscillograph; The 7-driving mechanism; The 8-electronic load; The 9-vacuum meter; 10-vacuum suction group; The contactless pot probe of 11-; The 12-Faraday cup; The 13-electric current loop; The 14-sample stage; The high-power parts sample of 15-; 16-insulating support, 17-test cabinet.
Embodiment
Below by embodiment, the present invention is further described.
Embodiment
High-power components interior charge-discharge characteristic simulation experiment system as shown in Figure 1, described system comprises electron accelerator 1, vacuum suction group 10, vacuum target chamber 2, test cabinet 17, and the electric current loop 13 between vacuum target chamber 2 and test cabinet 17; In vacuum target chamber 2, be provided with sample stage 14, insulating support 16, contactless pot probe 11, Faraday cup 12; In test cabinet 17, be provided with electron accelerator control system 3, contactless pot 4, beam monitoring instrument 5, oscillograph 6, driving mechanism 7, electronic load 8, vacuum meter 9; Its relative position and annexation are as follows:
Electron accelerator 1 is positioned at vacuum target chamber 2 tops;
In vacuum target chamber 2 inside, sample stage 14 is fixed on vacuum target chamber 2 bottom surfaces, and installing insulating support 16 on sample stage 14 is placed high-power parts sample 15 at insulating support 16, and described sample 15 is SADA; Aciculiform is responded to the certain degree of contactless pot probe 11 inclinations angle place sample 15 tops, make the inductor in probe 11 the place aheads place 4mm place, tested point top, the 11 any positions of popping one's head in do not contact high-power parts sample 15, Faraday cup 12 is positioned at the radiation scope of electron accelerator 1, its receiving plane and electron accelerator 1 over against; Vacuum suction group 10 is connected with vacuum target chamber 2;
Have through hole one ~ seven at test cabinet 17 walls; Wire passes through hole one, and electron accelerator control system 3 is connected with electron accelerator 1; Wire passes through hole two, and contactless pot 4 is connected with contactless pot probe 11; Wire passes through hole three, and beam monitoring instrument 5 is connected with Faraday cup 12; Wire passes through hole four, one ends and is connected with high-power parts sample 15, and the other end is connected with electronic load 8 by the center pit of electric current loop 13; Wire passes through hole five, and oscillograph 6 is connected with electric current loop 13; Wire passes through hole six, and driving mechanism 7 is connected with high-power parts sample 15; Wire passes through hole seven, and vacuum meter 9 is connected with vacuum target chamber 2;
Stainless steel structure is adopted in the empty chamber 2 of described true target, the whole ground connection of chamber body, and shielding factor≤95db, frequency bandwidth is 10kHz ~ 3GHz.
The bandwidth of described oscillograph 6 is more than the 200MHz.
The inner charge-discharge characteristic simulation experiment method of described high-power parts sample 15SADA, step is as follows: step 1, according to Weber formula (1), determine energy and the beam current density of incident electron;
R = 0.55 E e [ 1 - 0 . 9481 ( 1 + 3 E e ) ] - - - ( 1 )
Wherein, Ee is beam energy, and unit is MeV; R is range, and unit is g/cm 2
The degree of depth x of the high-power parts sample 15 of the actual incident of electronics and the pass between the range R are: R=ρ x, ρ are the density of high-power parts sample 15 materials, and unit is g/cm 3Measure x according to experiment, calculating Ee is 2.0MeV.
According to orbit parameter, select the beam current density more more abominable than orbital environment, size is 10pA/cm 2
Step 2, high-power parts sample 15 carried out cleaning surfaces and drying and processing after, be placed in the vacuum target chamber 2, make electronics can vertically inject high-power parts sample 15; Coat one deck sheet lead around high-power parts sample 15, the thick 2.5mm of sheet lead can't penetrate high energy electron and wears, and to reduce the scattering problems of internal electron, also can suppress to be scattered electronics and overflow;
Step 3, close vacuum target chamber 2, by vacuum suction group 10 it vacuumized, to vacuum tightness less than 9 * 10 -3Pa opens electron accelerator 1 and makes its electron emission; By the beam current density of Faraday cup 12 with beam monitoring instrument 5 measurement electron accelerators 1 electron emission, beam current density is adjusted to the numerical value of determining in the step 1;
Step 4, open driving mechanism 7 and electronic load 8, make high-power parts sample 15 normal operations, under the high energy electron environment of in step 1, determining, high energy electron is injected sample 15 surfaces, open simultaneously oscillograph 6, regulate triggering level in 100mV, monitor the discharge signal of high-power parts sample 15 inside, do not discharge in the test process.
Step 5, open contactless pot 4, the equilibrium potential of testing high-power parts sample 15 surfaces is-500～-600V, as shown in Figure 2.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1. high-power components interior charge-discharge characteristic simulation experiment system, it is characterized in that: described system comprises electron accelerator (1), vacuum suction group (10), vacuum target chamber (2), test cabinet (17), and is positioned at the electric current loop (13) between vacuum target chamber (2) and the test cabinet (17); In vacuum target chamber (2), be provided with sample stage (14), insulating support (16), contactless pot probe (11), Faraday cup (12); In test cabinet (17), be provided with electron accelerator control system (3), contactless pot (4), beam monitoring instrument (5), oscillograph (6), driving mechanism (7), electronic load (8), vacuum meter (9); Its relative position and annexation are as follows:
Electron accelerator (1) is positioned at vacuum target chamber (2) top;
In vacuum target chamber (2) inside, sample stage (14) is fixed on vacuum target chamber (2) bottom surface, at the upper installing insulating support (16) of sample stage (14), place high-power parts sample (15) at insulating support (16), the tip of contactless pot probe (11) is positioned at high-power parts sample, and (directly over 15 tested points, (15 approach but do not contact with sample; Faraday cup (12 are positioned at the radiation scope of electron accelerator (1), its receiving plane and electron accelerator (1) over against; Vacuum suction group (10) is connected with vacuum target chamber (2);
Electron accelerator control system (3) is connected with electron accelerator (1); Contactless pot (4) and contactless pot pop one's head in (11) be connected; Beam monitoring instrument (5) is connected with Faraday cup (12); Wire one end is connected with high-power parts sample (15), and the other end is connected with electronic load (8) by the center pit of electric current loop (13); Oscillograph (6) is connected with electric current loop (13); Driving mechanism (7) is connected with high-power parts sample (15); Vacuum meter (9) is connected with vacuum target chamber (2).
2. a kind of high-power components interior charge-discharge characteristic simulation experiment system according to claim 1, it is characterized in that: the bandwidth of described oscillograph (6) is more than the 200MHz.
3. a kind of high-power components interior charge-discharge characteristic simulation experiment system according to claim 1 is characterized in that: around high-power parts sample (15), being provided with a circle thickness is that the above sheet lead of 2.5mm protects.
4. a high-power components interior charge-discharge characteristic simulation experiment system and method, described method is used as claimed in claim 1 system, it is characterized in that: described method step is as follows:
Step 1, according to Weber formula as follows, determine energy and the beam current density of the incident electron that electron accelerator provides;
R = 0.55 E e [ 1 - 0.9481 ( 1 + 3 E e ) ]
Wherein, Ee is beam energy, and unit is MeV; R is range, and unit is g/cm 2
Pass between actual incident degree of depth x and the range R is: R=ρ x, ρ are the density of high-power parts sample (15) material, and unit is g/cm 3, calculate Ee by the value of x and ρ;
According to orbit parameter, select the beam current density more more abominable than orbital environment, unit is 10pA/cm 2
Step 2, high-power parts sample (15) is placed in the vacuum target chamber (2), makes electronics can vertically inject high-power parts sample (15);
Step 3, close vacuum target chamber (2), by vacuum suction group (10) it vacuumized, to vacuum tightness less than 9 * 10 -3Pa opens electron accelerator (1) and makes its electron emission; By the beam current density of Faraday cup (12) with beam monitoring instrument (5) measurement electron accelerator (1) electron emission, beam current density is adjusted to the numerical value of determining in the step 1;
Step 4, open driving mechanism (7) and electronic load (8), make high-power parts sample (15) normal operation, under the high energy electron environment of in step 1, determining, high energy electron is injected sample (15) surface, open simultaneously oscillograph (6), regulate triggering level in 100mV, the discharge signal that monitoring sample (15) is inner;
Step 5, open contactless pot (4), the current potential on specimen (15) surface.
CN2012104728004A 2012-11-20 2012-11-20 Interior charging and discharging characteristic stimulation test system and method of high-power part Pending CN102981074A (en)

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CN103267910A (en) * 2013-04-24 2013-08-28 兰州空间技术物理研究所 Device and method for utilizing plasma generated by electric propeller to induce charge-discharge effect
CN104237659A (en) * 2014-09-03 2014-12-24 兰州空间技术物理研究所 In-situ measurement device and method for space charges of dielectric material under electron irradiation
CN104237686A (en) * 2014-09-05 2014-12-24 兰州空间技术物理研究所 Method for detecting inner potential of satellite dielectric material
CN105761588A (en) * 2014-12-19 2016-07-13 中国科学院空间科学与应用研究中心 Simulation device of satellite deep charging and discharging phenomenon
CN111048227A (en) * 2019-12-04 2020-04-21 中国工程物理研究院材料研究所 Electron beam irradiation device and equipment
CN111505454A (en) * 2020-04-22 2020-08-07 国家卫星气象中心(国家空间天气监测预警中心) Method for monitoring deep charging of internal medium of satellite
CN114560109A (en) * 2022-03-17 2022-05-31 中国科学院国家空间科学中心 Space proton deep charging ground simulation device and method

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103245858A (en) * 2013-04-24 2013-08-14 兰州空间技术物理研究所 Device and method for ground-based simulation experimentation of charging effect of high altitude satellite material
CN103267910A (en) * 2013-04-24 2013-08-28 兰州空间技术物理研究所 Device and method for utilizing plasma generated by electric propeller to induce charge-discharge effect
CN103267910B (en) * 2013-04-24 2015-06-10 兰州空间技术物理研究所 Device and method for utilizing plasma generated by electric propeller to induce charge-discharge effect
CN104237659A (en) * 2014-09-03 2014-12-24 兰州空间技术物理研究所 In-situ measurement device and method for space charges of dielectric material under electron irradiation
CN104237686A (en) * 2014-09-05 2014-12-24 兰州空间技术物理研究所 Method for detecting inner potential of satellite dielectric material
CN105761588A (en) * 2014-12-19 2016-07-13 中国科学院空间科学与应用研究中心 Simulation device of satellite deep charging and discharging phenomenon
CN111048227A (en) * 2019-12-04 2020-04-21 中国工程物理研究院材料研究所 Electron beam irradiation device and equipment
CN111505454A (en) * 2020-04-22 2020-08-07 国家卫星气象中心(国家空间天气监测预警中心) Method for monitoring deep charging of internal medium of satellite
CN111505454B (en) * 2020-04-22 2022-04-05 国家卫星气象中心(国家空间天气监测预警中心) Method for monitoring deep charging of internal medium of satellite
CN114560109A (en) * 2022-03-17 2022-05-31 中国科学院国家空间科学中心 Space proton deep charging ground simulation device and method

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Application publication date: 20130320