JPH02155007A - Levitation device - Google Patents
Levitation deviceInfo
- Publication number
- JPH02155007A JPH02155007A JP63309673A JP30967388A JPH02155007A JP H02155007 A JPH02155007 A JP H02155007A JP 63309673 A JP63309673 A JP 63309673A JP 30967388 A JP30967388 A JP 30967388A JP H02155007 A JPH02155007 A JP H02155007A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- electrodes
- power source
- electrode
- controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005339 levitation Methods 0.000 title description 2
- 238000001514 detection method Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005486 microgravity Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
この発明は、宇宙基地などに搭載され材料実験に用いら
れる浮遊装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a floating device mounted on a space base or the like and used for material experiments.
（従来の技術〕
第２図はリン、「宇宙材料実験用静電浮遊炉の開発」科
学機器、５６巻、２月号、１９８５年、３０７〜３１７
頁（Ｗ、に、Ｒｈ１ｍ、 Ｍ、（：ｏｆｆｅｎｄｅｒ、
Ｍ、Ｔ、Ｈｙｓｏｎ。(Prior art) Figure 2 is Lin, "Development of an electrostatic levitation reactor for space materials experiments," Scientific Instruments, Vol. 56, February issue, 1985, 307-317.
Page (W, to, Rh1m, M, (:offender,
M., T., Hyson.
Ｗ、Ｔ、５１ｍｍ５． ａｎｄ Ｄ、Ｄ、ＥＩＩｅｍａ
ｎ、 ”Ｄｅｖｅｌｏｐｍｅｎｔｏｆａｎ ｅｌｅｃ
ｔｒｏｓｔａｔｉｃ ｐｏｓｉｔｉｏｎｅｒ ｆｏｒ
ｓｐａｃｅｍａｔｅｒｉａｌ Ｐｒｏｃｅｓｓｉｎｇ
、 Ｒｅｖ、 Ｓｃｉ、 Ｉｎｓｔｒｕｍ、
。W, T, 51mm5. and D, D, EIIema
n, ”Development fan elec
trostatic positioner for
space material processing
, Rev, Sci, Instrum,
.
５６、 Ｆｅｂｒｕａｒｙ １９８５． ｐｐ、３０７
−３１７．） に示されている従来の装置の構成図であ
る。図において、（１）は！電した試料、（２）は試料
（１）の位置を検出する位置検出装置、（３）は位ｌ検
出装置（２）の信号によって出力電圧の変わる可変電源
、（４ａ）、 （４ｂ）はこの可変電源（３）の両端
に接続され、対向して位置した一対の平面電極、（５ａ
）、 （５ｂ）は直流電源、（６ａ）、 （８ｂ）
は各平面電極（４ａ）、 （４ｂ）を囲むように配置
され、直流電源（５ａ）、 （５ｂ）によって平面電
極より高い電圧を保たれている円環電極である。56, February 1985. pp, 307
-317. ) is a configuration diagram of a conventional device shown in FIG. In the figure, (1) is! (2) is a position detection device that detects the position of the sample (1); (3) is a variable power supply whose output voltage changes depending on the signal from the position detection device (2); (4a) and (4b) are A pair of planar electrodes (5a
), (5b) are DC power supplies, (6a), (8b)
is an annular electrode arranged so as to surround each of the planar electrodes (4a) and (4b), and is maintained at a higher voltage than the planar electrodes by the DC power supplies (5a) and (5b).
次に動作について説明する。正に帯電した試料（１）の
位置は位置検出装置（２）によって常時監視され、試料
が図の鉛直方向の中央付近に留まるように可変電源（３
）の出力は制御される。円環二極（６ａ） 、 （６
ｂ）には平面電極（４ａ） 、 （４ｂ）よりも高い
電圧が印加されているので図の水平方向にも安定である
。Next, the operation will be explained. The position of the positively charged sample (1) is constantly monitored by a position detection device (2), and a variable power supply (3) is used to keep the sample near the vertical center of the figure.
) output is controlled. Circular bipolar (6a), (6
Since a voltage higher than that applied to the planar electrodes (4a) and (4b) is applied to b), it is also stable in the horizontal direction of the figure.
このように保持された試料（１）に光などを照射し、加
熱する実験を宇宙基地などで行なうことができる。An experiment in which the sample (1) held in this manner is irradiated with light or the like and heated can be conducted at a space base or the like.
（発明が解決しようとする課題）
従来の浮遊装置は以上のように構成されているので、平
面電極と円環電極で試料の位置を制御するだけであるた
め、試料を回転させる制御力がなく、加熱を均等に行な
うために回転させることができなかった。又、試料自身
の対流などによる自然回転で宇宙実験の特徴である微小
重力条件がくずれることを止めることができないという
問題点があった。(Problem to be solved by the invention) Since the conventional floating device is configured as described above, the position of the sample is only controlled by the plane electrode and the ring electrode, so there is no control force to rotate the sample. , it could not be rotated to ensure even heating. Another problem was that it was impossible to prevent the microgravity conditions, which are characteristic of space experiments, from being disrupted due to the sample's own natural rotation caused by convection.
この発明に係わる浮遊装置は、試料の位置を検出する位
置検出装置の信号によって出力電圧の変わる可変電源、
この可変電源の両端に接続され対向して位置した一対の
平面電極、各平面電極を囲むように配置され直流電源に
よって平面電極より高い電圧に保たれる円環電極を備え
、上記平面電極と円環電極で試料の位置を制御する浮遊
装置において、上記円環電極を分割すると共に、その分
割された隣合う電極に周期的に出力電圧を変える交番電
源を備えたものである。The floating device according to the present invention includes a variable power source whose output voltage changes depending on a signal from a position detection device that detects the position of a sample;
A pair of planar electrodes are connected to both ends of this variable power source and are located opposite each other, and a circular electrode is arranged to surround each planar electrode and is maintained at a voltage higher than that of the planar electrodes by the DC power source. In a floating device that controls the position of a sample using a ring electrode, the ring electrode is divided and an alternating current power source is provided to periodically change the output voltage to adjacent divided electrodes.
この発明においては、分割さねた円環電極が水平方向の
保持と回転制御の機構を兼ねるので、試料の自然回転を
抑止し、またその隣合う電極に交番電極により交番電界
を掛けることによって試料の回転を制御できる。In this invention, the divided ring electrodes serve as a horizontal holding and rotation control mechanism, so the natural rotation of the sample is suppressed, and an alternating electric field is applied to the adjacent electrodes by alternating electrodes, thereby allowing the sample to be rotated. The rotation of the can be controlled.
以下、この発明の一実施例を第２図と同一部分には同一
符号を付して示す第１図に基づいて説明する。図におい
て、（７ａ）、 （７ｂ）は直流電源（５ａ）。Hereinafter, one embodiment of the present invention will be described based on FIG. 1, in which the same parts as in FIG. 2 are denoted by the same reference numerals. In the figure, (7a) and (7b) are DC power supplies (5a).
（５ｂ）に直列に接続している交番電源、（６）は各平
面電極（４ａ）、 （４ｂ）を囲むように配置され、
４分割されてなる円環状の電極で、４分割された隣同士
は交番電源（７ａ）、 （７ｂ）の逆極に接続されて
いる。(5b) is connected in series with an alternating power supply, (6) is arranged so as to surround each plane electrode (4a), (4b),
The annular electrode is divided into four parts, and adjacent four parts are connected to opposite poles of the alternating current power supplies (7a) and (7b).
そして交番電源（７ａ）、 （７ｂ）の電圧尖頭値は
直流電ｍ （５ａ） 、 （５ｂ）の出力電圧よりも
低い値に設定されている。The voltage peak values of the alternating current power supplies (7a) and (7b) are set to values lower than the output voltages of the DC power supplies m (5a) and (5b).
次に動作について説明する。正に帯電した試料（１）の
位置は位置検出装置（２）によって常時監視され、試料
が図の鉛直方向の中央付近に留まるように可変型！ （
３）の出力は制御される。円環電極（６）の電圧は交番
電極（７）の最小出力時においても平面電極（４）より
も高いので図の水平方向にも安定である。Next, the operation will be explained. The position of the positively charged sample (1) is constantly monitored by the position detection device (2), which is variable so that the sample remains near the vertical center of the figure! (
The output of 3) is controlled. The voltage of the annular electrode (6) is higher than that of the planar electrode (4) even when the alternating electrode (7) has the minimum output, so it is stable in the horizontal direction of the figure.
また、交番電源（７）の周波数と電圧を調整するこによ
って試料（１）の回転を制御することができる。試料表
面の電荷は試料とともに回転しているため、交番電源（
７）の周波数に同期するような回転運動が安定になる。Furthermore, the rotation of the sample (1) can be controlled by adjusting the frequency and voltage of the alternating power supply (7). Since the charge on the sample surface rotates with the sample, an alternating power supply (
7) The rotational motion synchronized with the frequency becomes stable.
円環電極（６）の分割数をｎ、電源の周波数をｆとする
と試料は回転数ｎｆの回転になる。When the number of divisions of the annular electrode (6) is n and the frequency of the power source is f, the sample rotates at a rotational speed nf.
このように保持された試料（１）に光などを照射し、加
熱する実験を宇宙基地などで行なうことができる。An experiment in which the sample (1) held in this manner is irradiated with light or the like and heated can be conducted at a space base or the like.
なお、上記実施例では円環状の電極を分割して水平方向
の保持と回転制御の機構を兼ねたが、回転制御の電極を
別に配置し、交番電源を独立に接続しても効果は同じで
ある。In addition, in the above embodiment, the annular electrode was divided to serve as a mechanism for horizontal holding and rotation control, but the effect will be the same even if the rotation control electrode is placed separately and the alternating current power source is connected independently. be.
また上記実施例では円環状の電極を周期的に配置したが
、厳密に周期的である必要はない。Further, in the above embodiment, the annular electrodes are arranged periodically, but it is not necessary to arrange them strictly periodically.
（発明の効果）
以上のように、この発明によれば、試料の回転を制御で
きるため、微小重力のもとて均等に加熱する実験が可能
になるという効果がある。(Effects of the Invention) As described above, according to the present invention, since the rotation of the sample can be controlled, it is possible to carry out experiments in which the sample is heated evenly under microgravity.
第１図はこの発明の一実施例による浮遊装置の構成図、
また第２図は従来の浮遊装置の構成図である。
（１）は試料、（２）は位置検出装置、（３）は可変電
源、（４）は平面電極、（５）は直流電源、（６）は円
環電極、（７）は交番電源である。
なお、各図中同一符号は同一または相当部分を示す。FIG. 1 is a block diagram of a floating device according to an embodiment of the present invention;
Moreover, FIG. 2 is a block diagram of a conventional floating device. (1) is the sample, (2) is the position detection device, (3) is the variable power supply, (4) is the plane electrode, (5) is the DC power supply, (6) is the circular electrode, and (7) is the alternating current power supply. be. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
電圧の変わる可変電源、この可変電源の両端に接続され
対向して位置した一対の平面電極、各平面電極を囲むよ
うに配置され直流電源によつて平面電極より高い電圧に
保たれる円環電極を備え、上記平面電極と円環電極で試
料の位置を制御する浮遊装置において、上記円環電極を
分割すると共に、その分割された隣合う電極に周期的に
出力電圧を変える交番電源を備えたことを特徴とする浮
遊装置。A variable power source whose output voltage changes depending on the signal from the position detection device that detects the position of the sample, a pair of planar electrodes connected to both ends of this variable power source and located opposite each other, and a DC power source arranged to surround each planar electrode. In a floating device that is equipped with a circular electrode that is maintained at a higher voltage than a flat electrode, and in which the position of the sample is controlled by the flat electrode and the circular electrode, the circular electrode is divided, and the divided adjacent electrodes are A floating device characterized by being equipped with an alternating power supply that periodically changes the output voltage.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63309673A JPH0738135B2 (en) | 1988-12-07 | 1988-12-07 | Floating device |
| CA002004786A CA2004786C (en) | 1988-12-07 | 1989-12-06 | Levitator |
| IT68070A IT1239545B (en) | 1988-12-07 | 1989-12-06 | LEVITATION DEVICE FOR USE IN EXPERIMENTS IN THE MATERIALS SCIENCE AREA |
| DE3940769A DE3940769A1 (en) | 1988-12-07 | 1989-12-07 | FLOATING DEVICE |
| US07/815,837 US5155651A (en) | 1988-12-07 | 1991-12-30 | Levitator with rotation control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63309673A JPH0738135B2 (en) | 1988-12-07 | 1988-12-07 | Floating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02155007A true JPH02155007A (en) | 1990-06-14 |
| JPH0738135B2 JPH0738135B2 (en) | 1995-04-26 |
Family
ID=17995895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63309673A Expired - Lifetime JPH0738135B2 (en) | 1988-12-07 | 1988-12-07 | Floating device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0738135B2 (en) |
| IT (1) | IT1239545B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04168339A (en) * | 1990-10-31 | 1992-06-16 | Mitsubishi Electric Corp | Floating controller |
| US5558837A (en) * | 1994-04-05 | 1996-09-24 | Mitsubishi Denki Kabushiki Kaisha | Droplet floating apparatus |
-
1988
- 1988-12-07 JP JP63309673A patent/JPH0738135B2/en not_active Expired - Lifetime
-
1989
- 1989-12-06 IT IT68070A patent/IT1239545B/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04168339A (en) * | 1990-10-31 | 1992-06-16 | Mitsubishi Electric Corp | Floating controller |
| US5558837A (en) * | 1994-04-05 | 1996-09-24 | Mitsubishi Denki Kabushiki Kaisha | Droplet floating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8968070A1 (en) | 1991-06-06 |
| JPH0738135B2 (en) | 1995-04-26 |
| IT8968070A0 (en) | 1989-12-06 |
| IT1239545B (en) | 1993-11-05 |
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