CN107783171A - A kind of colloid microthruster beam divergence angle measuring system and method - Google Patents
A kind of colloid microthruster beam divergence angle measuring system and method Download PDFInfo
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- CN107783171A CN107783171A CN201710780546.7A CN201710780546A CN107783171A CN 107783171 A CN107783171 A CN 107783171A CN 201710780546 A CN201710780546 A CN 201710780546A CN 107783171 A CN107783171 A CN 107783171A
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- colloid
- microthruster
- catch tray
- charged particle
- distance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2907—Angle determination; Directional detectors; Telescopes
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a kind of colloid microthruster beam divergence angle measuring system and method, the test to colloid microthruster beam divergence angle can be realized.When colloid microthruster works, the charged particle ejected is collected disk collection, the distance between catch tray and thruster are adjusted by stepper motor, the distance L for occurring corresponding to maximum current value on catch tray first is obtained, finally by distance L values, catch tray diameter dcAnd thruster nozzle diameter d0, calculate colloid microthruster beam divergence angle.The measuring method has prevented situation about being opened the cabin in beam divergence angle measurement process, has improved method of testing validity, reduce experimentation cost compared with traditional measuring method.
Description
Technical field
The present invention relates to thruster field of measuring technique, and in particular to a kind of colloid microthruster beam divergence angular measurement system
System and method.
Background technology
Colloid microthruster is colloid micromass culture system, the core component of thrust is produced without towing control system, in colloid
, it is necessary to be measured to its beam divergence angle in microthruster development and test job, technology ginseng is provided for whole star topology layout
Number.
Catch tray measurement of the beam divergence angle measuring method of colloid microthruster based on sizes at present.Colloid is micro- to be pushed away
When power device is lighted a fire every time, different catch trays is arranged on the position fixed away from thruster spout.Due to one can only be installed every time
The catch tray of kind size, using this measurement apparatus, complete final measurement needs and open the cabin and vacuumize repeatedly, cause the test period
Long, experimentation cost height.Again because measurement process is discontinuously completed in multiple igniting, external interference factor has to measurement validity
Considerable influence.
The content of the invention
In view of this, the invention provides a kind of system and method for colloid microthruster beam divergence angular measurement, it will
Measuring method based on fixed range, sizes catch tray is changed into the measurement side based on adjustable distance, single size catch tray
Method, it is not necessary to repeatedly open the cabin and vacuumize, experimentation cost, guarantee test validity can be significantly reduced.
In order to solve the above-mentioned technical problem, the present invention is realized in：
A kind of colloid microthruster beam divergence angle measuring system, measuring system are arranged in vacuum chamber, it is characterised in that
Measuring system includes：Charged particle catch tray, thruster support, bottom plate, moving assembly and observing and controlling component；Tested colloid is micro- to be pushed away
Power device is arranged on bottom plate by thruster support, and charged particle catch tray insulating mounting is on moving assembly；Colloid microthrust
Device spout and charged particle catch tray test surface are relative and parallel；The charged particle catch tray center of circle is in colloid microthruster spout
On the extended line of central axis；Charged particle catch tray can be along colloid microthruster spout central axle under the drive of moving assembly
The extended line motion of line；Moving assembly and charged particle catch tray are all connected with observing and controlling component；
In measurement process, observing and controlling component controls charged particle catch tray and colloid microthruster spout by moving assembly
The distance between descending change, and record the current value collected under different distance by charged particle catch tray；Obtain most
High current value corresponding distance when occurring first, is designated as L；Pass through distance L values, catch tray diameter dcAnd thruster nozzle diameter d0,
Calculate colloid microthruster beam divergence angle α：
Preferably, the moving assembly includes sliding block, stepper motor, slider bracket, leading screw；Charged particle catch tray insulate
On sliding block, sliding block is slidably mounted on slider bracket, and sliding block is connected with the feed screw nut on leading screw, and leading screw is by step
Stepper motor drives.
Preferably, bias supply is included in observing and controlling component, bias voltage is provided for charged particle catch tray.
Preferably, charged particle catch tray is molybdenum disk.
Present invention also offers a kind of colloid microthruster beam divergence angle measuring method, comprise the following steps：
In data acquisition phase, vacuum chamber vacuumizes, and after the igniting of colloid microthruster, controls charged particle catch tray and glue
The descending change of the distance between body microthruster spout, in change procedure, record and received under different distance by charged particle
The current value that catch basin collects；
In data processing stage, corresponding distance when maximum current value occurs first is extracted from gathered data, is designated as L；
Pass through distance L values, catch tray diameter dcAnd thruster nozzle diameter d0, calculate colloid microthruster beam divergence angle α：
Beneficial effect：
It is of the invention to have prevented situation about being opened the cabin in beam divergence angle measurement process compared with traditional measuring method, only need
Once igniting can complete whole test process, improve method of testing validity, reduce experimentation cost.It is and more with using
The measuring method of kind of size collection disk is compared, the very little that the stepping-in amount of stepper motor can be adjusted, so that measurement result is more
To be accurate.
Brief description of the drawings
Fig. 1 colloid microthruster beam divergence angle measuring system total figures.
Wherein, the catch tray of 1- charged particles, 2- sliding blocks, 3- stepper motors, 4- bottom plates, 5- slider brackets, 6- leading screws, 7-
Thruster support, 8- colloid microthrusters, 9- bias supplies, 10- measurement and control units, 11- calculation machines, 01,02,03,04,
05,06,07- test cables.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The invention provides a kind of colloid microthruster beam divergence angle measurement scheme, its basic thought is only to use one
The catch tray of kind size, by changing the distance between catch tray and colloid microthruster, change the big of catch tray so as to equivalent
It is small, when there is maximum current value first on catch tray, utilization now corresponding distance L, with reference to catch tray diameter dcAnd thrust
Device nozzle diameter d0, calculate colloid microthruster beam divergence angle (full-shape).
The program realizes and measured that vacuum chamber is only taken out vacuum, a thruster and only once lighted a fire, just by distance change
Beam divergence angular measurement can be completed, reduces experimentation cost, improves measurement result validity.
The specific implementation process of the program is：
Step 1: structure beam divergence angle measuring system.
As shown in figure 1, beam divergence angle measuring system includes charged particle catch tray 1 (hereinafter referred to as catch tray), sliding block
2nd, stepper motor 3, bottom plate 4, slider bracket 5, leading screw 6, bias supply 9, measurement and control unit 10 and calculation machine 11.Wherein, receive
Catch basin 1 can use molybdenum disk.Sliding block 2, stepper motor 3, bottom plate 4, slider bracket 5, leading screw 6 together constitute moving assembly,
Measurement and control unit 10, bias supply 9, calculation machine 11 together constitute observing and controlling component.
Tested colloid microthruster 8 is arranged on bottom plate 4 by thruster support 7；The insulating mounting of catch tray 1 is in sliding block
On 2, sliding block 2 is slidably mounted on slider bracket 5 (slide rail)；Sliding block 2 and the feed screw nut (not shown) on leading screw 6
It is connected, is driven with feed screw nut along lead screw straight-line, leading screw 6 by stepper motor 3；The spout of colloid microthruster 8 and catch tray 1
Test surface is relative, and parallel；The center of circle of catch tray 1 is on the extended line of the spout central axis of colloid microthruster 8.
Catch tray 1 connects measurement and control unit 10 with stepper motor 3 by wire.Bias supply 9 is receipts by measurement and control unit 10
Catch basin 1 provides bias voltage, and measurement and control unit 10 is also obtained the data of the collection of catch tray 1 by test signal line, is sent to test
Computer 11.Measurement and control unit 10 is also connected with stepper motor 3 and only carries out motion control.
Step 2: carry out data acquisition by testing.
Vacuum chamber is vacuumized, and after the igniting of colloid microthruster, experiment starts, and catch tray 1 and glue are controlled by stepper motor 3
Distance is changed by descending principle between the spout of body microthruster 8, while is recorded and collected under different distance by catch tray 1
Current value.Paired recording distance and current value.In experimental data gatherer process, vacuum chamber keeps vacuum, colloid microthrust
Device does not have to light a fire again.
Step 3: Data Processing in Experiment.
After completing experiment, corresponding distance when maximum current value occurs first is obtained, is designated as L.
Step 4: beam divergence angle calculates.
Pass through distance L values, catch tray diameter dcAnd thruster nozzle diameter d0, colloid microthrust is calculated according to formula (1)
Device beam divergence angle α (full-shape)：
So far, this flow terminates.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of colloid microthruster beam divergence angle measuring system, measuring system is arranged in vacuum chamber, it is characterised in that is surveyed
Amount system includes：Charged particle catch tray (1), thruster support (7), bottom plate (4), moving assembly and observing and controlling component；Tested
Colloid microthruster is arranged on bottom plate (4) by thruster support (7), and charged particle catch tray (1) insulating mounting is in movement
On component；Colloid microthruster (8) spout and charged particle catch tray (1) test surface are relative and parallel；Charged particle catch tray
(1) center of circle is on the extended line of colloid microthruster (8) spout central axis；Charged particle catch tray (1) is in moving assembly
It can be moved under driving along the extended line of colloid microthruster (8) spout central axis；Moving assembly and charged particle catch tray (1)
It is all connected with observing and controlling component；
In measurement process, observing and controlling component controls charged particle catch tray (1) to be sprayed with colloid microthruster (8) by moving assembly
The distance between mouth descending change, and record the current value collected under different distance by charged particle catch tray (1)；Obtain
Maximum current value corresponding distance when occurring first is taken, is designated as L；Pass through distance L values, catch tray diameter dcAnd thruster spout is straight
Footpath d0, calculate colloid microthruster beam divergence angle α：
2. the system as claimed in claim 1, it is characterised in that the moving assembly includes sliding block (2), stepper motor (3), slided
Block support (5), leading screw (6)；On sliding block (2), sliding block (2) is slidably mounted on charged particle catch tray (1) insulating mounting
On slider bracket (5), sliding block (2) is connected with the feed screw nut on leading screw (6), and leading screw (6) is driven by stepper motor (3).
3. the system as claimed in claim 1, it is characterised in that bias supply (9) is included in observing and controlling component, is received for charged particle
Catch basin (1) provides bias voltage.
4. the system as claimed in claim 1, it is characterised in that charged particle catch tray (1) is molybdenum disk.
A kind of 5. colloid microthruster beam divergence angle measuring method, it is characterised in that
In data acquisition phase, vacuum chamber vacuumizes, and after the igniting of colloid microthruster, controls charged particle catch tray and colloid micro-
The descending change of the distance between thruster spout, in change procedure, record under different distance by charged particle catch tray
The current value collected；
In data processing stage, corresponding distance when maximum current value occurs first is extracted from gathered data, is designated as L；Pass through
Distance L values, catch tray diameter dcAnd thruster nozzle diameter d0, calculate colloid microthruster beam divergence angle α：
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| CN201710780546.7A CN107783171A (en) | 2017-09-01 | 2017-09-01 | A kind of colloid microthruster beam divergence angle measuring system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686817A (en) * | 2019-10-31 | 2020-01-14 | 电子科技大学 | Device for measuring emission angle of particle beam |
| CN111413727A (en) * | 2020-04-15 | 2020-07-14 | 中国科学院电工研究所 | Electron beam divergence angle measuring device and preparation method and measuring method thereof |
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| CN101539481A (en) * | 2009-04-17 | 2009-09-23 | 北京航空航天大学 | Plume diagnosis device of electric propulsion engine |
| CN106342132B (en) * | 2013-07-08 | 2015-05-20 | 上海交通大学 | Colloid thruster plume focuses on extraction electrode |
| CN105116435A (en) * | 2015-07-13 | 2015-12-02 | 兰州空间技术物理研究所 | Ion thruster beam test method based on Faraday probe array |
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2017
- 2017-09-01 CN CN201710780546.7A patent/CN107783171A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN101539481A (en) * | 2009-04-17 | 2009-09-23 | 北京航空航天大学 | Plume diagnosis device of electric propulsion engine |
| CN106342132B (en) * | 2013-07-08 | 2015-05-20 | 上海交通大学 | Colloid thruster plume focuses on extraction electrode |
| CN105116435A (en) * | 2015-07-13 | 2015-12-02 | 兰州空间技术物理研究所 | Ion thruster beam test method based on Faraday probe array |
Non-Patent Citations (1)
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| 商圣飞 等: "离子推力器束流密度分布模型", 《真空科学与技术学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686817A (en) * | 2019-10-31 | 2020-01-14 | 电子科技大学 | Device for measuring emission angle of particle beam |
| CN111413727A (en) * | 2020-04-15 | 2020-07-14 | 中国科学院电工研究所 | Electron beam divergence angle measuring device and preparation method and measuring method thereof |
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Application publication date: 20180309 |