JPS5942075A - Noncontacting vibrator - Google Patents
Noncontacting vibratorInfo
- Publication number
- JPS5942075A JPS5942075A JP57150696A JP15069682A JPS5942075A JP S5942075 A JPS5942075 A JP S5942075A JP 57150696 A JP57150696 A JP 57150696A JP 15069682 A JP15069682 A JP 15069682A JP S5942075 A JPS5942075 A JP S5942075A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- specimen
- vibration mode
- vibrator
- force
- 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.)
- Pending
Links
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本兄曲は、人工＃星の太陽電池パドルなどの大型構造物
の振動特性を測定する非徽触加振装置にｌする。[Detailed Description of the Invention] [Technical field to which the invention pertains] The present invention is applied to a non-contact vibration excitation device for measuring the vibration characteristics of a large structure such as a solar array paddle of an artificial star.
（幾砿構遺吻ではしばしば動的な特性が問題となる。聞
えは人工衛星の太陽電池バドルの毅搬制御では、機械系
の共振によって制御が不安定となることがある。この場
合、パドルの動特性−共振周波数、外力に対する応答比
、振動減挾物住などに問題かある。したがって、機械設
＃［者はこれらのＭｉ動籍性を予め把握しておく必要が
ある。(Dynamic characteristics are often a problem with Ikusei structure proboscis.In the transport control of the solar battery paddle of an artificial satellite, the control may become unstable due to resonance of the mechanical system.In this case, the paddle There may be problems with the dynamic characteristics of the resonant frequency, response ratio to external force, vibration reduction, housing, etc. Therefore, the mechanical engineer must understand these Mi mobility characteristics in advance.
近年有限安累法などによって、構造体の動特性の子側は
広くなされるようになっている。しり）し現実の構造体
を完全に理閾モデルで表イっすことは困難である。特に
振動減尺軸性は理論的に把握することが離しい。そのた
めに、芙除に構造体に力を与えて加指し動特性を測定す
る央馴が行なわれている。In recent years, the dynamic characteristics of structures have been widely studied using methods such as the finite value accumulation method. However, it is difficult to completely represent real structures using a rational model. In particular, it is difficult to understand theoretically the vibration reduction axis property. To this end, central training is being carried out in which force is applied to the structure in a swivel and the dynamic characteristics of the swivel are measured.
一般に構造体を加振するには、動電型や油圧型の加振器
の上にＵ（囲体をのせて加振したり、供試体の一部に加
振器を取り付けて加振したりする。Generally, in order to excite a structure, a U (surrounding body) is placed on top of an electrodynamic or hydraulic type exciter, or a vibrator is attached to a part of the specimen. or
ところが構造体の動特性はその境界条件によって変化す
る。加振器と供試体との接触状態あるいは供試体を支持
している部分によって特性変化が生じる。供試体そのも
のの特性（自由仝間における振動％性、材料の内部減辰
なと）の測定が必要なことも多い。However, the dynamic characteristics of a structure change depending on its boundary conditions. Characteristic changes occur depending on the contact state between the vibrator and the specimen or the part that supports the specimen. It is often necessary to measure the properties of the specimen itself (vibration percentage in free space, internal depletion of the material, etc.).
このような場合、加振糸によってυｔｉ試体囲体譬な受
けないようＫしなければならない。その方法ｔＪ力を非
接触で与えること、さらに供試体をワイＡ・で１１１シ
たり、未らかいマットの上にのせて支持することである
。ところが非接触では、十分な加振力を与んることが炬
しく、また上記の支持方法でもｌＪ（試作が未構造の場
合には支持の彫書を受ける。In such a case, care must be taken to ensure that the υti sample surroundings are not affected by the vibrating string. The method is to apply tJ force without contact, and to support the specimen by rolling it with wire A or by placing it on a soft mat. However, in the non-contact mode, it is difficult to apply sufficient excitation force, and even with the above-mentioned support method, support is required.
本冗明は上り己従来の問題点に層目し、これを顧云−す
ることを目的としてなされたもので、構造体のｉｋＲ勤
狩注を正確にｉ＋＋＋」足できる非接触加振装置ｄを提
供するものである。This article has been made with the purpose of taking a closer look at the problems of the conventional method and addressing these problems.It is a non-contact vibration excitation device that can accurately add i+++'' to the structure. It provides:
構造１＋の周ｖｌＫ仮献の′電磁石を配置して構造体の
振動モード形態に合わせて、１固々の′１１ｉを制御し
て駆動し、さらにその振動モードの静止点とｆｊる位置
（ノード点）−ｅ’ｎｅ試体を囲体する。By arranging a hypothetical 'electromagnet vlK around the structure 1+, we control and drive the '11i' of 1 in accordance with the vibration mode form of the structure, and further set the position (node) at the stationary point of the vibration mode and fj. point) - Enclose the e'ne specimen.
〔９６ヴ」の効米〕
加振糸によって構造体本末の低動時性が損われることな
くし迫体全捧を十カ・励振することかできるので、振動
％′ｆ＋、を正確に上述すること力５できる０〔発明の
実施例〕
以下図囲を参照して本発明を、況明する。[Efficacy of 96V] Since the vibration thread can excite the entire structure by 10 degrees without damaging the low vibration properties of the main body of the structure, the vibration %'f+ can be accurately stated above. [Embodiments of the Invention] The present invention will be explained in detail below with reference to the figures.
第１図は本う６明に恍る非接ｌ辿θｎ振装ｆＭの一実施
ｕｌＪを示す模型図である。ここでの供試体（は、太陽
ＬｃＬ池パドパドル用される１、５ ＋口Ｘ２＋１１の
アルミハニカムパネルで゛あ６゜このパネルけ・１°１
涙友索屏析によって９０１（ｚ ｆＣに６６３図〜第６
図に示ず４コの振動モード形Ｍｊ４−にもつことが、Ｉ
′）つ）つた。そこでこの４コの＃Ｉ＋？ｊｊモードを
励振するためにパネルの９箇所に′ｆ口、−石を配ロデ
している。それぞオしの１立（ａでｅよ第２図に示すよ
うに小鉄片４を県った供試体３の両側の屯＋ｍ石２が＋
ｔ−ｊ、 ７′Ｊ＼゛）′シ、−周期の間で父互に吸引
全）′Ｍ！り返して力１目辰力を与んＣいる。との吸引
力□ｉ ７ｉ：弓こす′ＩｅＬ流にｔ市り徊１回ｊ吊５
ににつて市り１叩されている。例えば第３図の振動モー
ドを趙Ｊ辰する場合に１−１．四隅の酸、磁石だ＆Ｊ／
）Ｅ劫き、１障り合った゛１磁石は逆相で１バＬ曲させ
る。ずな４） 仁＞ 、供試体の対角、―上の２点で衣
囮で吸引力を４凡ている１立間にもう一方の対月、−上
では一＝ ｂ＋＋＋で吸引力を与えるといった具合であ
る。このようなυ０瓶方法によって第３図の振動モード
が励起される。また第４図の振動モードではすべての電
磁石を働かせ、両端の６箇所１よ同４［、中心線上の３
箇所は逆相となるように制 制御する。第５図、第６図
についても同様にして９−所の加持方法を定める。FIG. 1 is a model diagram showing one implementation ulJ of the non-tangential trace θn distribution fM corresponding to the present invention. The specimen here (is an aluminum honeycomb panel of 1, 5 + mouth x 2 + 11 used for solar LcL pond paddle.
901 (z fC, Figure 663-6
Having four vibration mode shapes Mj4- (not shown) is I
')tsu) ivy. So these 4 #I+? In order to excite the jj mode, stones are placed at nine locations on the panel. As shown in Figure 2, the distance between the two sides of the specimen 3 with the small iron piece 4 is +
t-j, 7'J\゛)'S, - suction to each other during the cycle)'M! I will return and give you the power of power. Attraction force with □i 7i: Yukoshi'IeL style t wandering once j hanging 5
The city has been hit with one hit. For example, when changing the vibration mode of FIG. 3 to 1-1. The acid in the four corners is a magnet &J/
) E bends, and the 1 magnet that has a conflict is made to bend 1 bar L with the opposite phase. Zuna 4) Jin>, diagonal of the specimen, - At the upper two points, a suction force is applied with a clothes decoy.In the other half, on the other side, a suction force is applied at one = b+++ at the - upper point. This is how it goes. The vibration mode shown in FIG. 3 is excited by such a υ0 bottle method. In addition, in the vibration mode shown in Figure 4, all electromagnets are activated, and 6 points 1 and 4 on both ends, and 3 points on the center line.
The points are controlled so that they are in reverse phase. 5 and 6, the 9-position blessing methods are determined in the same manner.
さらに供試体の支持方法についても対象とする倣動モー
ド形態によって選ぶ。すなわち第３図〜第６図で破−で
示した位［（ノーダルライン）で支持する。例えば第３
図の振動モードを励振するＪＪ ｅ Ｋは第７図のよう
にパネル３０４辺の中点を細いビγノ、嵌６で加壁治具
１に取りつける。そのほかの振動モードの支持方法を第
８図〜第１０図に示す。細いビアノーを用いるのは瞼の
ねじりｔ＝Ｓによる特性変化を迎えるためである。Furthermore, the method of supporting the specimen is selected depending on the form of the following motion mode. That is, it is supported at the point indicated by a broken line in FIGS. 3 to 6 (nodal line). For example, the third
The JJ e K that excites the vibration mode shown in the figure is attached to the wall jig 1 with a narrow groove 6 at the midpoint of the panel 304 sides as shown in FIG. Other methods of supporting vibration modes are shown in FIGS. 8 to 10. The reason for using a thin Bianau is that the characteristics change due to twisting t=S of the eyelid.
このような非接触加振装置によって境界条件による特性
変化を伴なうことなく構造体を助出することができる。By using such a non-contact vibration excitation device, it is possible to support the structure without changing its characteristics due to boundary conditions.
また空間的に制御された加振力を与えることで、ローカ
ルな振動を防止し対象とする低動モードｔ−励堀できる
。さらに遊嵌する周数数に複数の振動モードが存在して
いても、それぞれのモード形態は異なるからひとつだけ
の振動モードを取り出すことかできる。Furthermore, by applying a spatially controlled excitation force, local vibrations can be prevented and the target low-motion mode t-excitation can be achieved. Furthermore, even if a plurality of vibration modes exist in the loosely fitted number of rotations, only one vibration mode can be extracted because each mode form is different.
第１図は本発明に係る非接触加振装置の一実施例を示す
模型図、第２図は第１図の要部を拡大して示した拡大図
、第３図から第６図はそれぞれ供試体のｌ久から４欠ま
での振動モード形ｍを示す特性図、第７図から′１Ａ１
０図はそれぞれ１次から４欠までの振動モードの支持方
法を示す模型図である。
ｌ・・・加振治具、 ２・・・電磁石、３・・
・供試体、 ４・・・小鉄片、５・・・割側
１回路、 ６・・・ビアノー。
代理人 升珪士 則近愈４１５ （ばか１名）第１図
第２図
第５図 第６図
第 ９ 図 第 １０ 図
ＡFig. 1 is a model diagram showing an embodiment of the non-contact vibration excitation device according to the present invention, Fig. 2 is an enlarged view showing the main part of Fig. 1, and Figs. 3 to 6 are respectively Characteristic diagram showing the vibration mode shape m from 1 to 4 of the specimen, from Fig. 7'1A1
Figure 0 is a model diagram showing a method of supporting vibration modes from primary to quadruple, respectively. l... Vibration jig, 2... Electromagnet, 3...
・Specimen, 4...Small iron piece, 5...1 circuit on split side, 6...Via no. Agent Masukekishi Norichika 415 (1 idiot) Figure 1 Figure 2 Figure 5 Figure 6 Figure 9 Figure 10 Figure A
Claims (1)
置された複数の電磁石と、構造体の蘭々の振動モードに
ついて、そのモードの静止点を支持する力ＩＪ振冶貝と
、ＢＵ記心尚石の供給逆流を制御する回路とから成る非
接触加振装置。A plurality of electromagnets are arranged in a non-contact manner around a structure having many vibration mode forms, and a force IJ is used to support the stationary point of the vibration mode of the structure, and a BU center is used. A non-contact excitation device consisting of a circuit that controls the backflow of the stone supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57150696A JPS5942075A (en) | 1982-09-01 | 1982-09-01 | Noncontacting vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57150696A JPS5942075A (en) | 1982-09-01 | 1982-09-01 | Noncontacting vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5942075A true JPS5942075A (en) | 1984-03-08 |
Family
ID=15502430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57150696A Pending JPS5942075A (en) | 1982-09-01 | 1982-09-01 | Noncontacting vibrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9017133B2 (en) | 2003-04-04 | 2015-04-28 | Kiditec Ag | Toy building block |
-
1982
- 1982-09-01 JP JP57150696A patent/JPS5942075A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9017133B2 (en) | 2003-04-04 | 2015-04-28 | Kiditec Ag | Toy building block |
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