JPH0214513B2 - - Google Patents
Info
- Publication number
- JPH0214513B2 JPH0214513B2 JP10625284A JP10625284A JPH0214513B2 JP H0214513 B2 JPH0214513 B2 JP H0214513B2 JP 10625284 A JP10625284 A JP 10625284A JP 10625284 A JP10625284 A JP 10625284A JP H0214513 B2 JPH0214513 B2 JP H0214513B2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- feed screw
- controller
- drive motor
- 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.)
- Expired
Links
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Description
【発明の詳細な説明】
この発明は、送りネジを用いて可動質量を可動
させ振動を制御する振動制御装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration control device that controls vibration by moving a movable mass using a feed screw.
近年、ビル等の建築構造物はその規模などにお
いてますます高層化、大規模化しているが、設計
手法等の洗練により、柔軟化、軽量化の傾向にあ
る。したがつて強い風や地震等の外乱により、第
１図の点線で示すような振動を生じており、この
ような振動はビルの居住者に不快感を与え、特に
地震の際には非常に大きな振動を引き起す可能性
がある。このような問題を解決するために、従来
から用いられていたものに、第２図に示す振動制
御装置がある。この振動制御装置は、第１図に示
した高層ビル１の屋上に近い階に設置されてい
て、往復動可能な可動質量２と、この可動質量２
をその端部に固定されたナツト３を介して往復動
させる送りネジ４と、その送りネジ４を回転せし
める駆動モータ５と、その駆動モータ５に制御電
流を与える制御器６と、高層ビル１の振動を検出
し制御器６にそれに対応した制御電流を発生せし
める振動センサ７と、上記可動質量２と高層ビル
１との間に介在するバネ（図示せず）とから構成
されていた。 BACKGROUND ART In recent years, architectural structures such as buildings have become increasingly taller and larger in scale, but due to the sophistication of design methods, they are becoming more flexible and lighter. Therefore, disturbances such as strong winds and earthquakes cause vibrations as shown by the dotted lines in Figure 1. Such vibrations cause discomfort to building occupants, and can be especially severe during earthquakes. May cause large vibrations. A vibration control device shown in FIG. 2 has been conventionally used to solve such problems. This vibration control device is installed on a floor near the roof of a high-rise building 1 shown in FIG.
A feed screw 4 that reciprocates through a nut 3 fixed to the end thereof, a drive motor 5 that rotates the feed screw 4, a controller 6 that applies a control current to the drive motor 5, and a high-rise building 1. It consisted of a vibration sensor 7 that detects vibrations and causes the controller 6 to generate a corresponding control current, and a spring (not shown) interposed between the movable mass 2 and the high-rise building 1.
このような構成からなる従来の振動制御装置
は、振動物体である高層ビル１が図で示す振動方
向に振動しようとすると、振動センサ７によつて
振動が検知される。この検知信号に対応した制御
電流が制御器６によつて駆動モータ５に与えら
れ、送りネジ４からナツト３を介して振動速度に
比例した制御力として可動質量２に作用するの
で、可動質量２は振動方向とは反対の方向に可動
し、その慣性力によつて振動が制御されていた。 In the conventional vibration control device having such a configuration, when the high-rise building 1, which is a vibrating object, attempts to vibrate in the vibration direction shown in the figure, the vibration sensor 7 detects the vibration. A control current corresponding to this detection signal is applied to the drive motor 5 by the controller 6, and acts on the movable mass 2 via the feed screw 4 and the nut 3 as a control force proportional to the vibration speed. was movable in the opposite direction to the vibration direction, and its vibration was controlled by its inertial force.
しかるに従来の振動制御装置にあつては、制御
器６、駆動モータ５、送りネジ４などの駆動系の
容量は、強風や大地震などの最大レベルに合せて
設定されて来たので、日常遭遇する通常の外乱振
動に対しては余裕がありすぎるために不必要に大
きな容量を選定せねばならず、それにともなつて
制御器６で消費される電力も大きくなること、な
らびに送りネジ４とナツト３間に介在するバツク
ラツシによつて送りネジ４の回転運動と可動質量
２の往復動とが対応せず振動制御の効果が悪いこ
と、およびこのバツクラツシのために場合によつ
ては振動制御が不安定となるなどの欠点があつ
た。 However, in the case of conventional vibration control devices, the capacity of the drive system such as the controller 6, drive motor 5, and feed screw 4 has been set to the maximum level such as strong winds and large earthquakes, so Since there is too much margin for normal disturbance vibrations, an unnecessarily large capacity must be selected, and as a result, the power consumed by the controller 6 also increases, and the lead screw 4 and nut 3, the rotational motion of the feed screw 4 does not correspond to the reciprocating motion of the movable mass 2, resulting in poor vibration control effectiveness, and in some cases, vibration control may become ineffective due to this backlash. It had drawbacks such as stability.
この発明は以上のような欠点を除くためになさ
れたもので、外乱振動の大きさに合せて駆動系の
容量を二段階に切換えることができるので、省エ
ネルギの面でも有利であり、さらにバツクラツシ
を相殺することにより安定かつ制御効果の高い振
動制御装置を提供するものである。 This invention was made in order to eliminate the above-mentioned drawbacks, and since the capacity of the drive system can be switched in two stages according to the magnitude of disturbance vibration, it is advantageous in terms of energy saving and also improves battery efficiency. The present invention provides a vibration control device that is stable and has a high control effect by offsetting the vibrations.
以下図面に従つてこの発明の一実施例について
説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第３図は２つの駆動系で構成される振動制御装
置を示すものであつて、それぞれを識別するため
に関連機器にはＡ，Ｂの添字を附してある。駆動
モータ５Ａ，５Ｂはそれぞれマウント８Ａ，８Ｂ
に固定されていて、その出力軸９Ａ，９Ｂに送り
ネジ４の軸端がそれぞれキーなどを用いてすべら
ないように取り付けられている。この送りネジ４
は駆動モータ５Ａ，５Ｂとキーなどを用いてすべ
らないように取り付けられている両端部近くを、
前記マウント８Ａ，８Ｂに固着された軸受１０
Ａ，１０Ｂに回転自在に保持されており、送りネ
ジ４の中央部分に近い部位は、ナツト３Ａ，３Ｂ
が螺着している。このナツト３Ａ，３Ｂは組立時
点で、可動質量２をはさみ込むようにリード方向
に一ぱいに回転させて、送りネジ４とナツト３
Ａ，３Ｂ間のバツクラツシを相殺した状態で可動
質量２に固着されている。したがつて送りネジ４
の軸を、駆動モータ５Ａ，５Ｂによつて同一方向
に回転させるか、もしくはいずれか一方の駆動モ
ータをフリーとして他方を回転させることによつ
て、レール１１上を滑らかに移動できるように組
みたてられたリニア軸受１２を下端に設けた可動
質量２は前後に円滑に往復動することができる。 FIG. 3 shows a vibration control device composed of two drive systems, and related devices are given suffixes A and B to identify them. Drive motors 5A and 5B are mounted on mounts 8A and 8B, respectively.
The shaft ends of the feed screws 4 are respectively attached to the output shafts 9A and 9B using keys or the like so as not to slip. This feed screw 4
near both ends, which are attached to the drive motors 5A and 5B using keys etc. to prevent them from slipping.
Bearing 10 fixed to the mounts 8A, 8B
A and 10B are rotatably held, and the part near the center of the feed screw 4 is held by nuts 3A and 3B.
is screwed on. At the time of assembly, the nuts 3A and 3B are rotated fully in the lead direction so as to sandwich the movable mass 2.
It is fixed to the movable mass 2 in a state where the backlash between A and 3B is canceled out. Therefore, the feed screw 4
The shafts of the rails 11 are rotated in the same direction by the drive motors 5A and 5B, or one of the drive motors is free and the other is rotated so that the rails 11 can be smoothly moved. The movable mass 2, which is provided with a bent linear bearing 12 at its lower end, can smoothly reciprocate back and forth.
次にこの発明による振動制御装置の動作につい
て、２つの駆動系がともに作用する場合を説明す
る。高層ビル１が図の振動方向に振動しようとす
ると、振動センサ７はその信号を検知し、制御器
６Ａ，６Ｂに加速度信号を送る。たゞし一方の制
御器に送られる信号は、駆動モータ５Ａ，５Ｂそ
れぞれが軸端からみて相反する方向に回転しなけ
れば送りネジ４が同一リード方向に回転しないの
で、符号反転器１３を経由している。制御器６
Ａ，６Ｂはこの信号を受け、積分し速度信号に変
換した後、速度信号に対応した電流をそれぞれの
駆動モータ５Ａ，５Ｂに送るため、駆動モータ５
Ａ，５Ｂは振動速度に対応したトルクT/2発生
し、それぞれが軸端からみて相反する方向に回転
する。これによつて駆動モータ５Ａ，５Ｂにキー
などを用いてすべらないように取りつけられてい
る送りネジ４に螺着したナツト３Ａ，３Ｂは振動
方向とは反対方向にそれぞれ
Ｕ／２＝2π×Ｔ／２／ＬＬ；送りネジのリード長
の制御力を受け、送りネジ４とナツト３Ａ，３Ｂ
間に介在するバツクラツシはあらかじめ相殺され
ているので、駆動モータ５のトルク作用方向が反
転すれば、ナツト３Ａ，３Ｂに加わる制御力も反
転する。したがつてナツト３Ａ，３Ｂが固着され
ている可動質量２は、ナツト３Ａ，３Ｂと一体と
なつて運動するため、高層ビル１の振動は減衰
し、安定かつ制御効果の高い振動制御が実現され
る。 Next, the operation of the vibration control device according to the present invention will be described in the case where two drive systems act together. When the high-rise building 1 attempts to vibrate in the vibration direction shown in the figure, the vibration sensor 7 detects the signal and sends an acceleration signal to the controllers 6A and 6B. However, the signal sent to one controller is sent via the sign inverter 13 because the feed screw 4 will not rotate in the same lead direction unless the drive motors 5A and 5B rotate in opposite directions when viewed from the shaft end. are doing. Controller 6
A and 6B receive this signal, integrate it, convert it into a speed signal, and then send current corresponding to the speed signal to the respective drive motors 5A and 5B.
A and 5B generate torque T/2 corresponding to the vibration speed, and each rotates in opposite directions when viewed from the shaft end. As a result, the nuts 3A and 3B screwed onto the feed screw 4, which is attached to the drive motors 5A and 5B using a key or the like so as not to slip, are moved in the direction opposite to the vibration direction, respectively, by U/2=2π×T. /2/LL; Under the control force of the lead length of the feed screw, the feed screw 4 and nuts 3A, 3B
Since the intervening backlash has been canceled out in advance, if the direction of torque action of the drive motor 5 is reversed, the control force applied to the nuts 3A, 3B is also reversed. Therefore, since the movable mass 2 to which the nuts 3A and 3B are fixed moves together with the nuts 3A and 3B, the vibrations of the high-rise building 1 are attenuated, and stable and highly effective vibration control is realized. Ru.
この時の運動方程式はつぎの式で表わされる。 The equation of motion at this time is expressed by the following formula.
m1X¨1＋k1X1＋k2（X2−X1）＝Ｆ−Ｕ ……(1)
m1X¨2＋k2（X2−X1）＝Ｕ ……(2)
Ｕ＝CX〓1 ……(3)
こゝに
m1；高層ビルのモーダル質量
k1；高層ビルのバネ定数
m2；可動質量の質量
k2；可動質量と高層ビル間のバネ定数
X1、X〓1、X¨1；高層ビルの変位、速度、加速度
X2、X〓2、X¨2；可動質量の変位、速度、加速度
Ｆ；外力
Ｕ；制御力
Ｃ；ゲイン定数
なおこゝでは２つの駆動系によつて駆動される
場合の動作を説明したが、外乱負荷の大きさによ
つては制御器６Ａと駆動モータ５Ａ間もしくは制
御器６Ｂと駆動モータ５Ｂ間の接続をオフとする
ことにより、いずれか一方の駆動系のみでも同様
の動作をさせることができる。 m 1 X¨ 1 + k 1 X 1 + k 2 ( X 2 − CX〓 1 ...(3) Here m 1 ; Modal mass of the high-rise building k 1 ; Spring constant of the high-rise building m 2 ; Mass of the movable mass k 2 ; Spring constant between the movable mass and the high-rise building X 1 , X 〓 1 , X ¨ 1 ; Displacement, velocity, acceleration of high - rise building X 2 , The operation when driven by the drive system has been explained, but depending on the magnitude of the disturbance load, the connection between the controller 6A and the drive motor 5A or between the controller 6B and the drive motor 5B may be turned off. , the same operation can be performed using only one of the drive systems.
この場合、運動方程式のうえでは、外力Ｆが
Ｆ／２に、制御力ＵがU/2になつたものと考えれば
容易に理解できる。駆動系を切換えて１系列とす
ることにより、制御器で消費される電力も減少す
るので省エネルギ面でも、有利となる。したがつ
て強風警報や地震警報の発令されている場合には
駆動系を２系列とするが、通常の低負荷振動時に
は１系列の駆動系とするなど、状況に応じた運用
が可能である。またいずれの駆動系としてもバツ
クラツシが相殺されているので、安定な振動制御
を行ないうる。 In this case, it can be easily understood by considering that the external force F has become F/2 and the control force U has become U/2 in terms of the equation of motion. By switching the drive systems into one system, the power consumed by the controller is also reduced, which is advantageous in terms of energy saving. Therefore, it is possible to use two drive systems when a strong wind warning or an earthquake warning is issued, but use one drive system during normal low-load vibrations, depending on the situation. Furthermore, since the backlash is canceled out in either drive system, stable vibration control can be performed.
なお以上の説明では、高層ビルにこの発明の振
動制御装置を適用した例について説明したが、他
の振動物体、例えば一般家屋、塔、橋梁等にも適
用できることはいうまでもない。 In the above explanation, the vibration control device of the present invention is applied to a high-rise building, but it goes without saying that it can also be applied to other vibrating objects, such as ordinary houses, towers, bridges, etc.
第１図は高層ビルの斜視図、第２図は従来例の
振動制御装置を示す図、第３図はこの発明による
振動制御装置の構成図で、図中２は可動質量、４
は送りネジ、５は駆動モータ、６は制御器、７は
振動センサである。なお、図中同一あるいは相当
部分には同一符号を附してある。
Fig. 1 is a perspective view of a high-rise building, Fig. 2 is a diagram showing a conventional vibration control device, and Fig. 3 is a configuration diagram of a vibration control device according to the present invention.
5 is a feed screw, 5 is a drive motor, 6 is a controller, and 7 is a vibration sensor. In addition, the same reference numerals are given to the same or corresponding parts in the figures.
Claims (1)
サの検知した信号を受け、それに対応した電流を
流す制御器と、この制御器から制御電流を受け回
転する駆動モータと、この駆動モータに接続して
いる送りネジと、この送りネジに螺着したナツト
に固定され送りネジの軸方向に往復動する可動質
量とからなる振動制御装置において、制御器と駆
動モータとを２系列として送りネジ両端に駆動モ
ータを配置して、振動量があらかじめ設定された
量より小さい場合は制御器と駆動モータを１系列
作動させ、振動量が上記量より大きい場合は制御
器と駆動モータを２系列作動させることを特徴と
する振動制御装置。 ２ 送りネジに螺着したナツトを２個として、送
りネジと各ナツト間に介在するバツクラツシを相
殺するように可動質量に組みつけたことを特徴と
する特許請求の範囲第１項記載の振動制御装置。[Claims] 1. A vibration sensor that detects vibration, a controller that receives a signal detected by the vibration sensor and flows a current corresponding to the signal, a drive motor that rotates by receiving a control current from the controller, and In a vibration control device consisting of a feed screw connected to a drive motor and a movable mass fixed to a nut screwed to the feed screw and reciprocating in the axial direction of the feed screw, the controller and the drive motor are connected in two series. A drive motor is placed at both ends of the feed screw, and when the amount of vibration is smaller than a preset amount, the controller and drive motor are operated in one series, and when the amount of vibration is larger than the above amount, the controller and drive motor are operated. A vibration control device characterized by operating two lines. 2. Vibration control according to claim 1, characterized in that two nuts screwed onto the feed screw are assembled to a movable mass so as to cancel out the backlash that exists between the feed screw and each nut. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10625284A JPS60250168A (en) | 1984-05-25 | 1984-05-25 | Vibration control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10625284A JPS60250168A (en) | 1984-05-25 | 1984-05-25 | Vibration control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60250168A JPS60250168A (en) | 1985-12-10 |
| JPH0214513B2 true JPH0214513B2 (en) | 1990-04-09 |
Family
ID=14428906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10625284A Granted JPS60250168A (en) | 1984-05-25 | 1984-05-25 | Vibration control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60250168A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH089472Y2 (en) * | 1988-12-05 | 1996-03-21 | 現代重工業株式会社 | Self-regulating dynamic absorber |
| JPH02300478A (en) * | 1989-05-15 | 1990-12-12 | Ohbayashi Corp | Damping device for structure |
-
1984
- 1984-05-25 JP JP10625284A patent/JPS60250168A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60250168A (en) | 1985-12-10 |
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