JPS6353331A - Vibration control device - Google Patents
Vibration control deviceInfo
- Publication number
- JPS6353331A JPS6353331A JP19314186A JP19314186A JPS6353331A JP S6353331 A JPS6353331 A JP S6353331A JP 19314186 A JP19314186 A JP 19314186A JP 19314186 A JP19314186 A JP 19314186A JP S6353331 A JPS6353331 A JP S6353331A
- Authority
- JP
- Japan
- Prior art keywords
- movable mass
- vibrating body
- vibration
- force
- control device
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001603 reducing effect Effects 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1005—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass
- F16F7/1011—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass by electromagnetic means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Road Paving Structures (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分封〕
この発明は9例えば高架連路等の構造物の撮動を低減す
る振動制御装置、特にその制御力の不感帯低減に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a vibration control device for reducing the imaging of a structure such as an elevated passageway, and particularly to a reduction in the dead zone of its control force.
一般に振動体に生じる振動を低減するのに、マスダンパ
か用いられている。第3図はその一例を示したもので図
においてfl+は可動質量で、ベアリング住υにより支
持され、バネ(2)とアクチュエータ(31を介して振
動体(4)に可動自在に取り付けられている。151は
加速度計で、制(財)器(6)の積分器(7)により振
動体(4)の振動速度ケ物出し、奄力増幅器+S+によ
りアクチュエータ(31に振動速波に比例した逆向きの
割iAt力を発生させている。(9)は固定コアで。Mass dampers are generally used to reduce vibrations generated in vibrating bodies. Figure 3 shows an example of this. In the figure, fl+ is a movable mass, supported by a bearing housing, and movably attached to the vibrating body (4) via a spring (2) and an actuator (31). 151 is an accelerometer, the integrator (7) of the controller (6) calculates the vibration velocity of the vibrating body (4), and the force amplifier +S+ calculates the vibration velocity of the actuator (31) which is proportional to the vibration velocity wave. It generates the divided iAt force in the direction. (9) is a fixed core.
可動コアulJとともにアクチュエータ(3)を構成イ
ろ。Configure the actuator (3) together with the movable core ULJ.
第5vはマスダンパの動作を説明1−るモデル図1で、
Mlは振動体(IIの質量、 Klはバネ定叙、
CQは減哀定錬であり、 M2は可動質量(1)の買
’Jj−,+ K2をエマスダンバのバネ(2)のバ
ネ定数である。ここでxlを振動体(4)の変位、
x2を可動頁遁il+の変位にとると運動方程式は以下
のようになる。The 5th v is a model diagram 1 that explains the operation of the mass damper.
Ml is the mass of the vibrating body (II, Kl is the spring definition,
CQ is a reduction formula, M2 is the weight of the movable mass (1), + K2 is the spring constant of the mass damper spring (2). Here, xl is the displacement of the vibrating body (4),
If x2 is taken as the displacement of the movable page il+, the equation of motion becomes as follows.
M、xI +C0X1 十に4x、+ K2 (x、−
X2 ) = F −V−(1)M?X2 +に2 (
X2 Xl ) ” V ””””・f21従
来のマスダンパでは、振動体(41の振41J速度X。M, xI +C0X1 4x, + K2 (x, -
X2) = F −V−(1)M? X2 + 2 (
X2
に比例した制欲]力Vを、ゲイン定数をCmとすると次
のような形で発生させている。A force V proportional to the desire is generated in the following form, assuming that the gain constant is Cm.
■二CmX1 ・・・・・・・・・・
・・・・・(3+式(31を式(1)に代入すると以下
のようになる。■2CmX1 ・・・・・・・・・・・・
...(3+Equation) Substituting 31 into Equation (1) yields the following.
式(4)より従来のマスダンパでは制御をかげることに
より、振動体(41の見かけの減衰を、coから(CI
]十cm)に増加させることにより有効な保動低減効果
を侍ていることかわかる。From equation (4), in the conventional mass damper, the apparent damping of the vibrating body (41) can be changed from co to (CI
]0cm), it can be seen that an effective retention reduction effect can be achieved.
マスダンパを構成する可動質量の大きさ警ブ、−飯的に
は振動体lX量の数パーセントであるが、振動体自体が
巨大な構造物の場合には、可!E!!實量が107ON
以上の大きさとなることもある。この上うな場合に可動
質量を滑らかに動かすために、水平方向のベアリング等
がよく用いられるが、可動質量の大きさか大きくなると
このベアリング部分での摩擦か問題となる。The size of the movable mass constituting the mass damper is typically a few percent of the amount of the vibrating body, but it is acceptable if the vibrating body itself is a huge structure! E! ! The actual amount is 107ON
It may even be larger than that. In such cases, horizontal bearings are often used to move the movable mass smoothly, but when the movable mass becomes large, friction in this bearing becomes a problem.
簡単のためにこの摩擦をクーロン摩」祭と仮定し。For simplicity, assume that this friction is a "Coulomb" festival.
可動質量の重量をW、ベアリングによる摩佛係数をμと
すると、摩裔力Pは9次式で表わされる。When the weight of the movable mass is W and the friction coefficient due to the bearing is μ, the friction force P is expressed by a 9th-order equation.
P−μW ・・・・・・・・・・
・・・・・・・・ (51また。こり摩擦力Pは9式(
山で示され可動質量に作用させようとする促j両刀とは
反対向きに働くので、岸浄力のある場合の制御力は以下
のようになる。P-μW・・・・・・・・・
・・・・・・・・・ (51 also. The stiffness friction force P is the formula 9 (
Since it acts in the opposite direction to the force shown by the mountain that tries to act on the movable mass, the control force when there is a Kishi force is as follows.
第5図は、賑礫の無い式(31の場合の振動迷度妄。Figure 5 shows the vibrational confusion in the case of 31 without debris.
に対する制御力のグラフであり、第6図は、摩擦を考應
、しだ式(ti+の場合の振動速反X、に対する制御力
のグラフである。FIG. 6 is a graph of the control force against the equation (vibration speed anti-X in the case of ti+), considering friction.
式t61より、lc藷、l≦pの乾囲では摩擦力のため
に可動質量が動かず制御力が発生しない、いわゆる不感
帯と呼ばれる領域が生じ、振動レベルをこの大きさ以下
に制御できなかったり、制御系を不安定にしたりすると
いう問題が生じていた。From formula t61, in the dry range of lc and l≦p, a so-called dead zone occurs where the movable mass does not move due to frictional force and no control force is generated, and the vibration level cannot be controlled below this level. This has caused problems such as making the control system unstable.
この発明は、かかる問題点を解決するためになされたも
ので、摩擦力の肺内となるベアリング部分に加わる可動
質量の重量を畔減し、不感帯の小さな振動制御装置を得
ることを目的としている。This invention was made to solve this problem, and aims to reduce the weight of the movable mass that is applied to the bearing part, which is the source of frictional force, and to obtain a vibration control device with a small dead zone. .
この発明に係わる振動制御装置は、車力方向に作用する
磁石を用いて、ベアリング部分に加わる可動質量の重量
を経減し、摩擦力を小さくするようにしたものである。The vibration control device according to the present invention uses a magnet acting in the direction of the vehicle force to reduce the weight of the movable mass applied to the bearing portion and reduce the frictional force.
この発明においては9両石かベアリング部分に加わる可
動質量のN量を打ち消してしまうので。In this invention, the nine stones cancel out the amount of N of the movable mass added to the bearing part.
#振力を大巾に軽減でき、不I瘍帝を減らし、より振動
低減効果を大ぎくすることかできる。# It can greatly reduce the vibration force, reduce the risk of injury, and further enhance the vibration reduction effect.
第1図はこの発明の一実施例を示す図であり。 FIG. 1 is a diagram showing an embodiment of the present invention.
(1)〜αBは上記従来装置と全く同一である。α2は
可動質量と振動体にそれぞれ設けられた磁石であって、
同極が向かい合うように取り付けられた磁石である。(1) to αB are completely the same as the above conventional device. α2 is a magnet provided on the movable mass and the vibrating body,
A magnet with like poles facing each other.
いま、上記−組の磁石が互いに及ぼし合う反発力をRと
すると、5ii石を用いた場合の摩擦力Qは。Now, if the repulsive force exerted by the above-mentioned pair of magnets on each other is R, then the frictional force Q when using 5ii stones is:
以下のようになる。It will look like this:
Q−μ(w−n) ・・・・・・・・・・・・・
・・(7)従って例えは9反発力Rを可動質量の重量W
の9/10に選べば、ei石を用いた場合の摩擦力Qを
従来の#振力Pの1/10とすることも可能である。Q-μ(w-n) ・・・・・・・・・・・・
...(7) Therefore, for example, 9 repulsive force R is the weight W of the movable mass
If 9/10 is selected, it is also possible to make the frictional force Q when using an ei stone 1/10 of the conventional #vibration force P.
このように第1図のように構成された振動制御装置では
、従来の撮動制御装置と同等の可動質量を用いながら、
摩擦力の大きさを無視しうるものとすることかできる。In this way, the vibration control device configured as shown in Fig. 1 uses the same movable mass as the conventional imaging control device, but
It is possible to make the magnitude of the frictional force negligible.
また、ベアリング等支持装置に加わる荷重が小さくなる
ことからこれらの寿命も大幅に延は丁ことかできる。Furthermore, since the load applied to supporting devices such as bearings is reduced, their lifespan can be significantly extended.
第2図は、この発明の他の実施例に係わるもので、−組
の磁石を互いに吸引力を及はし合うように用いた例であ
る。FIG. 2 shows another embodiment of the present invention, in which two sets of magnets are used so as to exert an attractive force on each other.
このほか、第1図や第2図に示した実施例で。In addition, the embodiments shown in FIGS. 1 and 2.
磁石の片方または両方に電磁石を用いたり、第2図に示
した実施例でどちらか片側の磁石を特徴とする特許請求
の範凹2項の場合に同等の効果が期待できることは明ら
かである。It is clear that the same effect can be expected if an electromagnet is used for one or both of the magnets, or if the embodiment shown in FIG. 2 is characterized by a magnet on either side.
この発明は以上説明したとおり、可動質量の重量の一部
を磁力により支持するという非常に実現しやすい方法に
より、低い振動レベルでの振動制御に悲影響を与える摩
俸力の影Vを有効に4減し。As explained above, this invention effectively eliminates the effect of friction force V, which has a negative impact on vibration control at low vibration levels, by using a very easy-to-implement method of supporting part of the weight of a movable mass by magnetic force. 4 less.
振動側(財)装置の振動低減効果を改善し、可動質量の
重量を支持するベアリング等の寿命を延ばす効果かある
。It has the effect of improving the vibration reduction effect of vibration-side equipment and extending the life of bearings, etc. that support the weight of the movable mass.
第1図はこの発明の一実施例を下す図、第2図はこの発
明の他の¥施例を示す図、第3図は従来の振!!I]
?til制御装置を示す図、第4図は振動側倒装置の原
理を示す図、第5図は摩擦の無い場合の割碑力特性を示
す図、第6図は岸擾力を考慮した場合の制御力持性を示
す図である。
図においてillに可動質量、(2)はバネ、(31は
アクチュエータ、(4)は嵌動体、(5)は加速度、(
61は制御器である。
なお9図中同一符号は同一または相当部分を示す。Fig. 1 is a diagram showing one embodiment of this invention, Fig. 2 is a diagram showing another embodiment of this invention, and Fig. 3 is a diagram showing a conventional swing! ! I]
? Figure 4 shows the principle of the til control device, Figure 4 shows the principle of the vibrating side tilting device, Figure 5 shows the tilt force characteristics when there is no friction, and Figure 6 shows the characteristics when shore shaking force is considered. It is a figure showing controllability. In the figure, ill is a movable mass, (2) is a spring, (31 is an actuator, (4) is a fitted body, (5) is an acceleration, (
61 is a controller. Note that the same reference numerals in Figure 9 indicate the same or corresponding parts.
Claims (2)
動検出手段と、上記振動体の振動方向に往複動する可動
質量と、可動質量および振動体に取り付けられ、可動質
量に作用する動方向に磁力を発生する磁石と、上記振動
体に固定され上記可動質量を駆動するアクチュエータと
、上記振動検出手段により検出された振動体の振動速度
に比例した制動力を出力できるよう上記アクチュエータ
を制御する制御器とを備えたことを特徴とする振動制御
装置。(1) Vibration detection means for detecting the vibration of a vibrating body that vibrates in response to an external force, a movable mass that moves back and forth in the vibration direction of the vibrating body, and a movable mass that is attached to the movable mass and the vibrating body and that acts on the movable mass. a magnet that generates magnetic force in a direction; an actuator fixed to the vibrating body that drives the movable mass; and controlling the actuator so that it can output a braking force proportional to the vibration speed of the vibrating body detected by the vibration detection means. A vibration control device comprising: a controller for controlling vibrations;
いに吸引力を及ぼす場合、片側を磁性体としたことを特
徴とする特許請求の範囲第(1)項記載の振動制御装置
。(2) The vibration control device according to claim (1), characterized in that when the movable mass and the magnets attached to the vibrating body exert an attractive force on each other, one side is made of a magnetic material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19314186A JPH0788875B2 (en) | 1986-08-19 | 1986-08-19 | Vibration control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19314186A JPH0788875B2 (en) | 1986-08-19 | 1986-08-19 | Vibration control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6353331A true JPS6353331A (en) | 1988-03-07 |
JPH0788875B2 JPH0788875B2 (en) | 1995-09-27 |
Family
ID=16302965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19314186A Expired - Lifetime JPH0788875B2 (en) | 1986-08-19 | 1986-08-19 | Vibration control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0788875B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0254071A (en) * | 1988-08-19 | 1990-02-23 | Ishikawajima Harima Heavy Ind Co Ltd | Vibration controller for building |
JPH0285478A (en) * | 1988-09-20 | 1990-03-26 | Ohbayashi Corp | Suppression for vibration |
WO1995028577A1 (en) * | 1994-04-18 | 1995-10-26 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
US5558191A (en) * | 1994-04-18 | 1996-09-24 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
US5915508A (en) * | 1994-04-18 | 1999-06-29 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
JP2008246413A (en) * | 2007-03-30 | 2008-10-16 | Fujita Corp | Shaking device |
-
1986
- 1986-08-19 JP JP19314186A patent/JPH0788875B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0254071A (en) * | 1988-08-19 | 1990-02-23 | Ishikawajima Harima Heavy Ind Co Ltd | Vibration controller for building |
JPH0285478A (en) * | 1988-09-20 | 1990-03-26 | Ohbayashi Corp | Suppression for vibration |
WO1995028577A1 (en) * | 1994-04-18 | 1995-10-26 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
US5558191A (en) * | 1994-04-18 | 1996-09-24 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
US5564536A (en) * | 1994-04-18 | 1996-10-15 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
US5915508A (en) * | 1994-04-18 | 1999-06-29 | Minnesota Mining And Manufacturing Company | Tuned mass damper |
JP2008246413A (en) * | 2007-03-30 | 2008-10-16 | Fujita Corp | Shaking device |
Also Published As
Publication number | Publication date |
---|---|
JPH0788875B2 (en) | 1995-09-27 |
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