JPH0688763A - Method for discriminating rotating body for high-speed rotary device - Google Patents
Method for discriminating rotating body for high-speed rotary deviceInfo
- Publication number
- JPH0688763A JPH0688763A JP29889692A JP29889692A JPH0688763A JP H0688763 A JPH0688763 A JP H0688763A JP 29889692 A JP29889692 A JP 29889692A JP 29889692 A JP29889692 A JP 29889692A JP H0688763 A JPH0688763 A JP H0688763A
- Authority
- JP
- Japan
- Prior art keywords
- rotating
- rotating body
- speed
- rotary body
- separating
- 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
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の理由分野】本発明は、遠心機などのように回
転体を高速回転させる装置における回転体の分別方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of separating rotating bodies in a device for rotating the rotating bodies at high speed such as a centrifuge.
【０００２】[0002]
【従来の技術】従来の回転体の分別方法は、例えば実開
昭４８−１５６７３号に示されるように、回転体によっ
て異なる光学的な反射部と非反射部が交互に設けられた
アダプタを回転体底部周囲に設け、このアダプタにラン
プ等を照射させ、反射した光を電気的信号に変換するこ
とにより回転体を分別する方法が示唆されていた。2. Description of the Related Art A conventional method for separating rotating bodies is, for example, as shown in Japanese Utility Model Application Laid-Open No. 48-15673, rotating an adapter in which optical reflecting portions and non-reflecting portions which are different depending on the rotating bodies are rotated. It has been suggested that the adapter is provided around the bottom of the body, and the adapter is irradiated with a lamp or the like, and the reflected light is converted into an electric signal to separate the rotating body.
【０００３】また、米国特許３４６２６７０号に示され
るように、回転体底部に回転体によって異なる数のマグ
ネットを設け、このマグネットをピックアップで検出し
て電気的信号に変換することにより回転体を分別する方
法も示唆されていた。Further, as shown in US Pat. No. 3,462,670, magnets of different numbers are provided at the bottom of the rotary body depending on the rotary body, and the magnets are detected by a pickup and converted into electric signals to separate the rotary bodies. A method was also suggested.
【０００４】また、特公昭３５−１２９９９号に示され
るように、外形寸法重量が小さいものは許容最高回転数
が高く、外形寸法重量が大きいものは許容回転数が低い
という前提のもとに、所定回転数に達するまでの時間に
より回転体を分別する方法も示唆されていた。Further, as shown in Japanese Patent Publication No. 35-12999, it is premised that a product having a small external dimension weight has a high allowable maximum rotational speed, and a product having a large external dimension weight has a low allowable rotational speed. It has also been suggested to separate rotors by the time required to reach a predetermined rotation speed.
【０００５】[0005]
【発明が解決しようとする課題】従来の例えば実開昭４
８−１５６７３号に示される光学的な反射部と非反射部
が交互に設けられたアダプタによる分別方法は、アダプ
タの汚れや傷に対して重大な欠点を有していた。即ち、
アダプタの特に反射部が汚れや傷により光学的反射を損
ねた場合、結果的に出力される電気的信号が本来のもの
とは異なってしまい、回転体の分別ができないか或いは
回転体を違う回転体と誤認してしまうという欠点を有し
ていた。[Problems to Be Solved by the Invention]
The sorting method using an adapter having an optical reflection portion and a non-reflection portion alternately shown in JP-A-8-15673 has a serious drawback with respect to dirt and scratches on the adapter. That is,
If the optical reflection is damaged due to dirt or scratches, especially on the reflection part of the adapter, the electrical signal that is output will be different from the original one, and the rotor cannot be separated or the rotor will rotate differently. It had the drawback of being mistaken for the body.
【０００６】また、従来の米国特許３４６２６７０号に
示されるマグネットの数による分別方法は、汚れや傷に
対しては比較的有効であるが、一つの回転体に多くのマ
グネットを装着しなければならず、コストの高い回転体
となっていた。また、万一マグネットの装着に誤りがあ
った場合、過速度を引き起こし重大な事故につながる心
配があった。Further, although the conventional method of separating magnets by the number of magnets shown in US Pat. No. 3,462,670 is relatively effective against dirt and scratches, many magnets must be attached to one rotating body. Instead, it was a high-cost rotating body. Also, if the magnet is installed incorrectly, there is a concern that it may cause an overspeed and lead to a serious accident.
【０００７】また、特公昭３５−１２９９９号に示され
る回転体の分別方法は、「外形寸法重量が小さいものは
許容最高回転数が高く、外形寸法重量が大きいものは許
容回転数が低い」という前提が成立する場合のみ可能と
なる分別方法である。この特許の出願された時点では、
アルミニウム製のアングルロータしかなかったためこの
ような前提が成立していたが、現在では回転体の材質だ
けでも、アルミニウム以外にチタン、ＦＲＰ等があり、
また回転体の種類もアングルロータ以外に、バーチカル
ロータ、スイングロータ等があり複雑多岐にわたってい
る。それ故、現在では「外形寸法重量が小さいものは許
容最高回転数が高く、外形寸法重量が大きいものは許容
回転数が低い」という前提は成立しなくなっており、特
公昭３５−１２９９９号に示される回転体の分別方法は
使用することができないものである。[0007] Further, the method of separating rotating bodies disclosed in Japanese Patent Publication No. 35-12999 is that "a small outer dimension weight has a high allowable maximum rotational speed, and a large outer dimension weight has a low allowable rotational speed". This is a classification method that is possible only when the premise is satisfied. At the time this patent was filed,
This premise was established because there was only an angle rotor made of aluminum, but nowadays, there are titanium, FRP, etc. in addition to aluminum as the material of the rotating body alone.
In addition to the angle rotor, there are various types of rotating bodies, such as a vertical rotor and a swing rotor, which are complex and diverse. Therefore, at present, the premise that "a small external dimension weight has a high permissible maximum rotational speed and a large external dimension weight has a low permissible rotational speed" is no longer true, as shown in Japanese Examined Patent Publication No. 35-12999. The method of separating rotating bodies that is used cannot be used.
【０００８】本発明の目的は、上記した従来技術の欠点
に鑑みてなされたものであり、前記した回転体のアダプ
タが汚れたり傷ついたりしても安定して分別ができ、且
つ信頼性の高い検出を可能とし、しかもコストの低い回
転体分別方式を提供することである。The object of the present invention has been made in view of the above-mentioned drawbacks of the prior art. Even if the adapter of the rotating body is contaminated or scratched, it can be stably separated and is highly reliable. It is an object of the present invention to provide a rotating body sorting method that enables detection and is low in cost.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に本発明は、回転体の種類が異なるとその慣性モーメン
トも異なることに着目し、回転体の加速時に慣性モーメ
ントを演算することにより、回転体を分別するようにし
たものである。In order to achieve the above object, the present invention focuses on the fact that different types of rotors have different moments of inertia, and by calculating the moments of inertia during acceleration of the rotor, The rotating body is separated.
【００１０】[0010]
【作用】駆動モータへ流す電流を一定とすることでトル
クを一定とし、回転体を加速するとき、単位時間に変化
する回転数からその回転体の慣性モーメントを演算し、
その演算された慣性モーメントにより回転体を分別する
ことができる。The torque is made constant by making the current flowing to the drive motor constant, and when accelerating the rotating body, the moment of inertia of the rotating body is calculated from the number of revolutions changing per unit time,
The rotating body can be separated based on the calculated moment of inertia.
【００１１】[0011]
【実施例】本発明になる具体例を以下の通り説明する。EXAMPLES Specific examples according to the present invention will be described below.
【００１２】回転体１は回転軸２から着脱可能であり、
回転体１は、形状、大きさ、重量の異なる多種類のもの
と交換できる。回転軸２に載った回転体１は、駆動モー
タ３によって駆動され制御器４が回転数信号センサ５か
らの信号を受けて回転を制御する。このような高速回転
装置において、駆動モータ３へ所定の電流を流すこと
で、トルクＴを同じとして回転体１を高速回転へ加速す
るとき、その単位時間ｄｔにｄωの回転数変化があった
とすれば数式１からその回転体の慣性モーメントＩを演
算し求めることができる。 Ｔ ＝ Ｉ ・ ( ｄω ／ ｄｔ) … 数式１ このようにして求めた慣性モーメントから回転体１を分
別することができる。The rotating body 1 is removable from the rotating shaft 2,
The rotating body 1 can be replaced with various types having different shapes, sizes, and weights. The rotating body 1 mounted on the rotating shaft 2 is driven by the drive motor 3 and the controller 4 receives the signal from the rotation speed signal sensor 5 to control the rotation. In such a high-speed rotation device, when a predetermined current is supplied to the drive motor 3 to accelerate the rotating body 1 to a high-speed rotation with the same torque T, it is assumed that there is a change in the rotation speed of dω during the unit time dt. For example, the moment of inertia I of the rotating body can be calculated and obtained from Expression 1. T = I. (Dω / dt) (Equation 1) The rotating body 1 can be discriminated from the moment of inertia obtained in this way.
【００１３】このように回転体１が自動的に分別するこ
とができると、制御面で多くの利点がある。以下に本発
明の分別方法を、回転体のアンバランス制御に適用した
例を詳細に説明する。If the rotating body 1 can be automatically sorted in this way, there are many advantages in terms of control. Hereinafter, an example in which the sorting method of the present invention is applied to unbalance control of a rotating body will be described in detail.
【００１４】まず、振動振幅測定センサから振動振幅を
制御器４は受けている。First, the controller 4 receives the vibration amplitude from the vibration amplitude measuring sensor.
【００１５】一般に駆動モータ部分が単純なスプリング
７によって吊り下げられている構造で回転する回転体の
振動振幅特性は回転体の大小にかかわらず一定のトルク
で加速される場合においては慣性モーメントが大きいほ
ど、加速時間が長くなる。従って、一次危険速度の共振
点を通過するときの振幅は一般的に慣性モーメントが大
であるほど大きくなる。また、ロータの形状により高速
側の振動の特長が異なる。これらをまとめると一般的に
慣性モーメントＩの大きいものがＡ，そして小さくなる
につれてＢ、Ｃのような振幅の特性となる。このような
振幅特性を持つ回転体のアンバランスによる共振点の変
化も、Ａ、Ｂ、Ｃの特性と相似したＡ’、Ｂ’、Ｃ’の
特性となる。この場合、最初の危険速度のＮ1領域では
一定の振幅限界値Ｃを定めて検知する従来方法では、
Ａ、Ｂ、Ｃの振幅のＮ1領域での振幅差が大きくなるた
め、Ａの特性を持つものはわずかな回転体のアンバラン
ス量で検知できるが、Ｂ、Ｃの特性を持つ回転体に対す
るアンバランス量はより大きな量にならないと振幅が限
度に達しないため、検知感度が悪くなった。Generally, the vibration amplitude characteristic of a rotating body having a structure in which the drive motor portion is suspended by a simple spring 7 has a large moment of inertia when the rotating body is accelerated with a constant torque regardless of the size of the rotating body. The higher the acceleration time, the longer. Therefore, the amplitude when passing through the resonance point of the primary critical speed generally increases as the moment of inertia increases. Also, the characteristics of vibration on the high speed side differ depending on the rotor shape. Summarizing these, in general, the one having a large inertia moment I has characteristics of A, and the smaller the moment of inertia I, the characteristics of amplitude like B and C. The change in the resonance point due to the imbalance of the rotating body having such an amplitude characteristic also has the characteristics of A ′, B ′, and C ′ that are similar to the characteristics of A, B, and C. In this case, in the conventional method of detecting by setting a constant amplitude limit value C in the N 1 region of the first critical speed,
Since the amplitude difference of the amplitudes of A, B, and C in the N 1 region becomes large, those with the characteristic of A can be detected with a slight amount of unbalance of the rotating body, but with respect to the rotating body with the characteristics of B and C. If the amount of unbalance becomes larger, the amplitude does not reach the limit, and the detection sensitivity deteriorates.
【００１６】本発明においては、図３に示すように、振
幅の限度をＤで示すように０〜Ｎ1、Ｎ2〜Ｎ3、Ｎ3〜Ｎ
5の領域に分割して振幅限度値を定める。その振幅限度
値は、上述した慣性モーメントから回転体を分別し、そ
の慣性モーメントの振動特性カーブに基づいて定めるよ
うに制御器４内に記憶回路を設ける。また、回転中にア
ンバランスが急激に増加する場合には、図３のＮ4から
立ち上がるＡ”の振幅も検知できることになる。In the present invention, as shown in FIG. 3, the amplitude limit is indicated by D, which is 0 to N 1 , N 2 to N 3 , and N 3 to N.
Divide into 5 areas and set the amplitude limit value. A storage circuit is provided in the controller 4 so that the amplitude limit value is determined based on the vibration characteristic curve of the inertia moment by separating the rotating body from the inertia moment described above. Further, when the imbalance sharply increases during rotation, the amplitude of A ″ rising from N 4 in FIG. 3 can also be detected.
【００１７】[0017]
【発明の効果】本発明では、回転体の慣性モーメントに
より回転体を分別することとしたので、回転体のアダプ
タが汚れたり傷ついたりしても安定した分別を行なうこ
とができ、しかも回転体に分別用の特別な構造を付加し
ないため安価な回転体分別方式を提供することができ
る。As described above, according to the present invention, the rotating body is separated by the moment of inertia of the rotating body. Therefore, even if the adapter of the rotating body is soiled or damaged, stable separation can be performed, and the rotating body can be separated. Since a special structure for separation is not added, an inexpensive rotary body separation system can be provided.
【図１】本発明の一実施例を示す全体図。FIG. 1 is an overall view showing an embodiment of the present invention.
【図２】本発明の一実施例をアンバランス検出に適用し
た時の回転数と検知する振動振幅の関係を示す関係図。FIG. 2 is a relationship diagram showing a relationship between a rotation speed and a detected vibration amplitude when an embodiment of the present invention is applied to unbalance detection.
【図３】本発明の一実施例をアンバランス検出に適用し
た時の振動振幅検知の実例を示す図。FIG. 3 is a diagram showing an actual example of vibration amplitude detection when an embodiment of the present invention is applied to unbalance detection.
１は回転体、２は回転軸、３は駆動モータ、４は制御
器、５は回転数信号センサ、６は振動振幅測定センサ、
７はスプリングである。1 is a rotating body, 2 is a rotating shaft, 3 is a drive motor, 4 is a controller, 5 is a rotation speed signal sensor, 6 is a vibration amplitude measuring sensor,
7 is a spring.
Claims (4)
転する回転軸と、該回転軸に載置されることで回転され
る回転体とを有する高速回転装置において、前記回転体
を所定トルクの基で加速させ、加速中の時間の経過に伴
う回転数の変化量により前記回転体の慣性モーメントを
演算し、該慣性モーメントにより前記回転体を分別する
ことを特徴とする高速回転装置の回転体分別方法。1. A high-speed rotation device having a drive motor, a rotary shaft that rotates at high speed by the drive motor, and a rotary body that is rotated by being mounted on the rotary shaft. A rotary body of a high-speed rotating device, characterized in that the rotary body is accelerated by a base, a moment of inertia of the rotary body is calculated based on a change amount of the rotational speed with the lapse of time during acceleration, and the rotary body is separated by the inertia moment. How to sort.
ある定められた回転数の範囲で前記駆動モータに所定の
電流を流すことで、毎加速時の前記トルクを同じにして
前記回転体を加速させることを特徴とする高速回転装置
の回転体分別方法。2. The method for separating rotating bodies according to claim 1, wherein
A method for separating a rotating body of a high-speed rotating device, characterized in that a predetermined current is supplied to the drive motor in a range of a predetermined number of revolutions to make the torque the same at each acceleration to accelerate the rotating body. .
法において、前記回転体の加速中の時間の経過に伴う回
転数の変化を測定する前記回転体又は回転体駆動系の近
傍に設けられた回転数信号センサを有し、更に該回転数
信号センサの出力により前記慣性モーメントを演算する
制御器を有し、該制御器によって前記駆動モータを制御
することを特徴とする高速回転装置の回転体分別方法。3. The rotating body sorting method according to claim 1 or 2, wherein the rotating body or the rotating body drive system for measuring a change in rotational speed with the passage of time during acceleration of the rotating body is provided near the rotating body or the rotating body drive system. A high-speed rotation device having a rotation speed signal sensor provided, and further having a controller for calculating the moment of inertia by the output of the rotation speed signal sensor, and controlling the drive motor by the controller. Method of separating rotating bodies.
前記回転体又は回転体駆動系の近傍に振動振幅測定用非
接触式センサを有し、該振動振幅測定用非接触式センサ
からの信号を受け前記回転体又は回転体駆動系の振幅を
検知する前記制御器を有し、分別した前記回転体の許容
振動振幅を自動的に設定し、前記回転体の振動振幅がそ
の限度を超えた時、超えたことを知らせる機能を有する
ことを特徴とする高速回転装置の回転体分別方法。4. The method for separating rotating bodies according to claim 3,
A non-contact type sensor for measuring vibration amplitude is provided in the vicinity of the rotary body or the rotary body drive system, and a signal from the non-contact type sensor for measuring vibration amplitude is received to detect the amplitude of the rotary body or the rotary body drive system. It has the controller, has a function of automatically setting the permissible vibration amplitude of the separated rotating body, and having a function of notifying when the vibration amplitude of the rotating body exceeds its limit. Method for separating rotating bodies of high-speed rotating equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4298896A JPH0795008B2 (en) | 1992-11-09 | 1992-11-09 | Centrifuge control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4298896A JPH0795008B2 (en) | 1992-11-09 | 1992-11-09 | Centrifuge control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0688763A true JPH0688763A (en) | 1994-03-29 |
| JPH0795008B2 JPH0795008B2 (en) | 1995-10-11 |
Family
ID=17865562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4298896A Expired - Lifetime JPH0795008B2 (en) | 1992-11-09 | 1992-11-09 | Centrifuge control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795008B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014184201A1 (en) * | 2013-05-14 | 2014-11-20 | Resonic Gmbh | Device and method for determining inertia properties of an object |
| CN109876931A (en) * | 2019-04-08 | 2019-06-14 | 浙江大学 | A kind of hypergravity centrifuge amount of unbalance monitoring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230134A (en) * | 1983-06-14 | 1984-12-24 | Matsushita Electric Ind Co Ltd | Inertia moment measuring device |
-
1992
- 1992-11-09 JP JP4298896A patent/JPH0795008B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59230134A (en) * | 1983-06-14 | 1984-12-24 | Matsushita Electric Ind Co Ltd | Inertia moment measuring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014184201A1 (en) * | 2013-05-14 | 2014-11-20 | Resonic Gmbh | Device and method for determining inertia properties of an object |
| CN105247334A (en) * | 2013-05-14 | 2016-01-13 | 雷松尼克有限公司 | Device and method for determining inertia properties of an object |
| US9846100B2 (en) | 2013-05-14 | 2017-12-19 | Resonic Gmbh | Device and method for determining inertia properties of an object |
| CN109876931A (en) * | 2019-04-08 | 2019-06-14 | 浙江大学 | A kind of hypergravity centrifuge amount of unbalance monitoring method |
| CN109876931B (en) * | 2019-04-08 | 2020-07-03 | 浙江大学 | Method for monitoring unbalance of supergravity centrifugal machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0795008B2 (en) | 1995-10-11 |
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