JPH11295403A - Apparatus for evaluating permanent magnet - Google Patents
Apparatus for evaluating permanent magnetInfo
- Publication number
- JPH11295403A JPH11295403A JP9309798A JP9309798A JPH11295403A JP H11295403 A JPH11295403 A JP H11295403A JP 9309798 A JP9309798 A JP 9309798A JP 9309798 A JP9309798 A JP 9309798A JP H11295403 A JPH11295403 A JP H11295403A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- evaluation device
- pedestal portion
- magnetoelectric conversion
- conversion element
- 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.)
- Withdrawn
Links
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は永久磁石の評価装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet evaluation device.
【０００２】[0002]
【従来の技術】近年、光メディアの高密度化、高速化に
伴い、光ディスクドライブのキーパーツであるモータの
高性能化が進んでいる。それに伴いモータを開発・生産
する上でモータ特性評価の高精度化の要求が高まってお
り、特にモータ永久磁石の着磁状態を精度よく評価する
方法が必要とされている。2. Description of the Related Art In recent years, motors, which are key parts of optical disk drives, have been improved in performance with the increase in density and speed of optical media. Along with this, there is an increasing demand for higher accuracy of motor characteristic evaluation in developing and producing motors. In particular, a method for accurately evaluating the magnetized state of motor permanent magnets is required.
【０００３】以下に、従来の永久磁石の評価方法につい
て説明する。図５は従来の永久磁石の評価方法を示すも
のである。５１は永久磁石、５２はホール素子、５３は
ホール素子の保持と配線を兼ねたフイルム基板、５４は
フィルム基板３の保持部、５５は永久磁石保持部、５６
は永久磁石を回転させる回転部、５７はホール素子の出
力を処理・記録する表示装置である。[0003] A conventional method for evaluating a permanent magnet will be described below. FIG. 5 shows a conventional method for evaluating a permanent magnet. Reference numeral 51 denotes a permanent magnet; 52, a Hall element; 53, a film substrate serving as a holding and wiring element for the Hall element; 54, a holder for the film substrate 3; 55, a permanent magnet holder;
Is a rotating unit that rotates a permanent magnet, and 57 is a display device that processes and records the output of the Hall element.
【０００４】永久磁石の評価装置について説明する。ま
ず、永久磁石５１を保持部５５に取り付け、保持する。
次にフイルム基板の保持部５４を調整して、フィルム基
板３の先端に取り付けられたホール素子５１が永久磁石
に接触するようにする。そして、回転部５５を回転させ
ながら表示装置５７を用いて永久磁石の着磁状態を評
価、記録を行う。[0004] A permanent magnet evaluation device will be described. First, the permanent magnet 51 is attached to the holding unit 55 and held.
Next, the holder 54 of the film substrate is adjusted so that the Hall element 51 attached to the tip of the film substrate 3 contacts the permanent magnet. Then, while the rotating unit 55 is being rotated, the magnetized state of the permanent magnet is evaluated and recorded using the display device 57.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来の方法ではホール素子がフイルム基板で保持された構
造であり、フィルム基板は薄く、柔らかいために、経時
変化により変形しやすく、また、評価中に表示装置の振
動のために位置がずれることもあり、永久磁石表面から
ホール素子までの距離、ホール素子の傾きを一定に保つ
ことができなかった。However, the above-mentioned conventional method has a structure in which the Hall element is held by a film substrate, and the film substrate is thin and soft, so that it is easily deformed with the lapse of time. In some cases, the position was shifted due to the vibration of the display device, and the distance from the surface of the permanent magnet to the Hall element and the inclination of the Hall element could not be kept constant.
【０００６】通常、永久磁石の表面磁束密度は永久磁石
表面からの距離の２乗に反比例して小さくなるため、永
久磁石の着磁状態を精度良く評価するためには永久磁石
表面からホール素子までの距離を一定に保つ必要があ
る。また、表面磁束密度はホール素子の永久磁石表面に
対する傾きにより変化するため、ホール素子の傾きを一
定に保つ必要がある。よって、永久磁石の着磁状態を精
度よく評価することが困難であった。Normally, the surface magnetic flux density of a permanent magnet decreases in inverse proportion to the square of the distance from the surface of the permanent magnet. Therefore, in order to accurately evaluate the magnetized state of the permanent magnet, the surface magnetic flux density from the surface of the permanent magnet to the Hall element is required. Distance must be kept constant. Also, since the surface magnetic flux density changes depending on the inclination of the Hall element with respect to the surface of the permanent magnet, it is necessary to keep the inclination of the Hall element constant. Therefore, it has been difficult to accurately evaluate the magnetized state of the permanent magnet.
【０００７】また、モータ用の永久磁石の評価を行う場
合、実際に駆動しているモータの磁束密度はステータか
らの磁束の影響があるため、実際に駆動している永久磁
石の磁束密度と、測定した値の磁束密度とは異なってい
る。When evaluating a permanent magnet for a motor, the magnetic flux density of the actually driven motor is influenced by the magnetic flux from the stator. It differs from the measured magnetic flux density.
【０００８】そこで本発明は、永久磁石の着磁状態を精
度よく評価することが可能であり、実際にモータに利用
する駆動モータの永久磁石と同じ状態で永久磁石の評価
ができる永久磁石の評価装置を提供することを目的とす
る。Accordingly, the present invention makes it possible to accurately evaluate the magnetized state of the permanent magnet, and to evaluate the permanent magnet in the same state as the permanent magnet of the drive motor actually used for the motor. It is intended to provide a device.
【０００９】[0009]
【課題を解決するための手段】上記の課題を解決するた
めに本願発明の永久磁石の評価装置は、静止アームに固
定した金属製治具に磁電変換素子を取り付けたので、永
久磁石の評価中、表示機器等が振動したとしても、磁電
変換素子は金属製治具に固定されているので、磁電変換
素子の位置ずれが生じることはない。In order to solve the above-mentioned problems, the evaluation apparatus for a permanent magnet according to the present invention has a magnetoelectric conversion element attached to a metal jig fixed to a stationary arm. Even if the display device or the like vibrates, since the magnetoelectric conversion element is fixed to the metal jig, no displacement of the magnetoelectric conversion element occurs.
【００１０】更に、磁性金属からなる台座部に磁電変換
素子を固定した永久磁石の評価装置は、台座部が磁性金
属のため、リング状の永久磁石を評価する場合、台座部
と永久磁石の間で磁気回路を生じ、モータの構成に近い
磁束蜜度を評価することができる。[0010] Further, the permanent magnet evaluation device in which the magnetoelectric conversion element is fixed to a pedestal portion made of a magnetic metal is used for evaluating a ring-shaped permanent magnet because the pedestal portion is a magnetic metal. Then, a magnetic circuit is generated, and the degree of magnetic flux close to the configuration of the motor can be evaluated.
【００１１】[0011]
【発明の実施の形態】本願発明の永久磁石の評価装置
は、静止アームに固定した金属製治具に磁電変換素子を
取り付けたので、表示機器等の振動により、磁電変換素
子に力が加わったとしても、磁電変換素子は金属製治具
により固定されているため、磁電変換素子の位置がずれ
ることがない。また、金属製治具は磁電変換素子を固定
する台座部と、この台座部と静止アームとを連結するロ
ッド部とからなるので、永久磁石の表面から磁電変換素
子までの距離、磁電変換素子の傾きを一定に保って、永
久磁石の着磁状態を評価することができる。BEST MODE FOR CARRYING OUT THE INVENTION In the apparatus for evaluating a permanent magnet according to the present invention, a magneto-electric conversion element is mounted on a metal jig fixed to a stationary arm, so that a force is applied to the magneto-electric conversion element by vibration of a display device or the like. However, since the magnetoelectric conversion element is fixed by the metal jig, the position of the magnetoelectric conversion element does not shift. Further, since the metal jig includes a pedestal portion for fixing the magnetoelectric conversion element and a rod portion connecting the pedestal portion and the stationary arm, the distance from the surface of the permanent magnet to the magnetoelectric conversion element, The magnetization state of the permanent magnet can be evaluated while keeping the inclination constant.
【００１２】また、金属治具に複数個の磁電変換素子を
取り付けてもよい。更に、３個の磁電変換素子をそれぞ
れ直交するように金属治具に配置すると、永久磁石の着
磁状態を３次元的に測定することができる。Further, a plurality of magneto-electric conversion elements may be attached to the metal jig. Further, when the three magnetoelectric conversion elements are arranged on the metal jig so as to be orthogonal to each other, the magnetized state of the permanent magnet can be measured three-dimensionally.
【００１３】更に、磁電変換素子を金属製の台座部に固
定することにより、永久磁石と台座部との間で磁気回路
を構成する。Further, a magnetic circuit is formed between the permanent magnet and the pedestal by fixing the magnetoelectric conversion element to a metal pedestal.
【００１４】更に、台座部の形状は円柱体とすること
で、リング状の磁石や、湾曲した磁石を測定する場合、
間隔が一定となる。また、台座部の形状が多角柱体とし
てもよい。また、台座部の形状がモータコアとほぼ同形
状としてもよい。Further, when the shape of the pedestal portion is a cylindrical body, when measuring a ring-shaped magnet or a curved magnet,
The interval is constant. Further, the shape of the pedestal portion may be a polygonal column. Further, the shape of the pedestal portion may be substantially the same as the shape of the motor core.
【００１５】更に、台座部としてモータコアを用いるこ
とで、モータ駆動状態に近い永久磁石の評価が可能とな
る。Further, by using the motor core as the pedestal portion, it is possible to evaluate a permanent magnet close to a motor driving state.
【００１６】更に、永久磁石を載置する回転台と、この
回転台の中心点と金属製治具の中心点とが同一になるよ
うに、前記回転台の上方で台座部を固定する静止アーム
とを備えることにより、リング状の磁石や、湾曲した磁
石を測定する場合、間隔が一定となる。Furthermore, a turntable on which a permanent magnet is mounted, and a stationary arm for fixing a pedestal above the turntable so that the center point of the turntable and the center point of the metal jig are the same. When a ring-shaped magnet or a curved magnet is measured, the interval becomes constant.
【００１７】本願発明の永久磁石の評価方法は、磁電変
換素子を確実に固定できるので高い精度で磁束密度を評
価することができる。According to the method for evaluating a permanent magnet of the present invention, the magnetic flux density can be evaluated with high accuracy because the magnetoelectric conversion element can be securely fixed.
【００１８】また、磁性金属からなる台座部と、永久磁
石との間隔がほぼ一定の状態で永久磁石の磁束密度を測
定すると実際のモータに近い条件で磁束密度を測定する
ことができる。Further, when the magnetic flux density of the permanent magnet is measured in a state where the distance between the pedestal portion made of a magnetic metal and the permanent magnet is substantially constant, the magnetic flux density can be measured under conditions close to those of an actual motor.
【００１９】[0019]
【実施例】（実施例１）図１、図２、図３を用いて永久
磁石評価装置を説明する。(Embodiment 1) A permanent magnet evaluation apparatus will be described with reference to FIGS. 1, 2 and 3. FIG.
【００２０】永久磁石評価装置１は、永久磁石磁束を電
気信号として検出する磁電変換素子となすホール素子２
と、このホール素子２が側面に面するように固定した磁
性金属体からなる台座部３と、この台座部３の中心に固
定したロッド部を保持する静止アーム４と、台座部５の
下方に配設した永久磁石回転台６と、永久磁石回転台６
と静止アーム４とを固定する土台部５と、ホール素子２
と接続線により連結し、ホール素子２により検出した電
気信号を出力・表示する表示装置７からなる。なお、台
座部３とロッド部を合せて金属治具装置と呼ぶ。図２に
おいて台座部３を説明すると、真鍮、鉄材等の磁性金属
体からなる台座部３は、ホール素子２をはめ込める溝８
を有し、この溝部には接着剤９を塗布する際ホール素子
２と溝８の接合面に接着剤９が付着しないようにするた
めの接着剤たまり１２が設けている。溝８はホール素子
２の位置を決めるためのものであり、ミクロンオーダー
で高精度に加工されている。上記構成において、台座部
３の溝８に注意深くホール素子２を取り付け、接着剤た
まり１２に溝とホール素子２に接合部に接着剤が付着し
ないように接着剤を塗布することにより、ホール素子２
が傾かないで精度よく固定できる。また、台座部３の側
面に固定したホール素子２は、台座部３の側面から突出
しておらず、台座部３の側面と同じ高さである。A permanent magnet evaluation device 1 includes a Hall element 2 serving as a magnetoelectric conversion element for detecting a permanent magnet magnetic flux as an electric signal.
And a pedestal portion 3 made of a magnetic metal body fixed so that the Hall element 2 faces the side surface; a stationary arm 4 holding a rod portion fixed at the center of the pedestal portion 3; The permanent magnet turntable 6 and the permanent magnet turntable 6
A base 5 for fixing the arm and the stationary arm 4, and a Hall element 2
And a display device 7 connected by a connection line to output and display an electric signal detected by the Hall element 2. The pedestal portion 3 and the rod portion are collectively called a metal jig device. The pedestal portion 3 will be described with reference to FIG. 2. The pedestal portion 3 made of a magnetic metal body such as brass or iron material has a groove 8 in which the Hall element 2 can be fitted.
In the groove, an adhesive pool 12 is provided to prevent the adhesive 9 from adhering to the joint surface between the Hall element 2 and the groove 8 when the adhesive 9 is applied. The groove 8 is for determining the position of the Hall element 2, and is processed with high precision on the order of microns. In the above configuration, the Hall element 2 is carefully attached to the groove 8 of the pedestal portion 3, and the adhesive is applied to the adhesive pool 12 so that the adhesive does not adhere to the joint between the groove and the Hall element 2.
Can be fixed accurately without tilting. The Hall element 2 fixed to the side surface of the pedestal portion 3 does not protrude from the side surface of the pedestal portion 3 and has the same height as the side surface of the pedestal portion 3.
【００２１】静止アーム４は上下方向のみ移動可能であ
り、ロック機構を解除すると、静止アーム４は上下に動
き、静止アーム４の動きにしたがい、台座部３も上下に
動く。静止アームを上方に動かすことで、永久磁石回転
台６と台座部３との間隔が十分に開き、この間隔にリン
グ状永久磁石１０を永久磁石回転部６に配置する。その
後、静止アーム４を下げることで、リング状永久磁石１
０の内側に台座部３を移動する。この時の永久磁石回転
台６の中心と、リング状永久磁石１０の中心と、台座部
３の中心とは同一であり、リング状永久磁石１０の内側
側面と、台座部３の側面との間隔も常に一定である。よ
って、永久磁石回転台を回転駆動することで、永久磁石
回転台６に配置したリング状永久磁石１０も同時に回転
する。この時の、リング状永久磁石１０と台座部３との
間隔は常に一定である。The stationary arm 4 can move only in the vertical direction. When the lock mechanism is released, the stationary arm 4 moves up and down, and the pedestal 3 moves up and down according to the movement of the stationary arm 4. By moving the stationary arm upward, the space between the permanent magnet rotating table 6 and the pedestal section 3 is sufficiently widened, and the ring-shaped permanent magnet 10 is arranged on the permanent magnet rotating section 6 at this space. Then, by lowering the stationary arm 4, the ring-shaped permanent magnet 1
The pedestal part 3 is moved to the inside of zero. At this time, the center of the permanent magnet rotating table 6, the center of the ring-shaped permanent magnet 10, and the center of the pedestal portion 3 are the same, and the distance between the inner side surface of the ring-shaped permanent magnet 10 and the side surface of the pedestal portion 3 Is always constant. Accordingly, by rotating the permanent magnet rotating table, the ring-shaped permanent magnet 10 arranged on the permanent magnet rotating table 6 also rotates at the same time. At this time, the distance between the ring-shaped permanent magnet 10 and the pedestal portion 3 is always constant.
【００２２】永久磁石評価装置１を用いて、アウターロ
ータのモータで利用するリング状の永久磁石１０を測定
する場合、静止アーム６のロック機構を解除して台座部
３を動かし、リング状永久磁石１０を永久磁石回転台６
に配置する。そして、台座部３をリング状永久磁石１０
の内側に配置して静止アーム６を止め、ロック機構によ
り固定する。その後、永久磁石回転台６を回転駆動する
と、台座部３は静止アームにより停止しており、この台
座部３を中心としてリング状の永久磁石が回転する。こ
の時、図３に示すようにエアギャップ１１が実際に利用
するモータの永久磁石とコア間のエアギャップと同じ値
にすることにより、モータに組み込んだ場合と同じ磁気
回路が構成される。したがって、実際にモータに永久磁
石を組み込んだ状態で永久磁石を評価するためモータの
特性と相関がとれた評価ができる。When the ring-shaped permanent magnet 10 used in the motor of the outer rotor is measured using the permanent magnet evaluation device 1, the locking mechanism of the stationary arm 6 is released, and the pedestal 3 is moved. 10 is a permanent magnet turntable 6
To place. Then, the pedestal portion 3 is connected to the ring-shaped permanent magnet 10.
, The stationary arm 6 is stopped, and fixed by a lock mechanism. Thereafter, when the permanent magnet rotating table 6 is rotationally driven, the pedestal portion 3 is stopped by the stationary arm, and the ring-shaped permanent magnet rotates around the pedestal portion 3. At this time, as shown in FIG. 3, by setting the air gap 11 to the same value as the air gap between the permanent magnet and the core of the motor actually used, the same magnetic circuit as when the motor is incorporated is formed. Therefore, since the permanent magnets are evaluated in a state where the permanent magnets are actually incorporated in the motor, it is possible to perform an evaluation in correlation with the characteristics of the motor.
【００２３】よって、本願の永久磁石の評価装置は、リ
ング状永久磁石が回転した状態で、且つ磁気回路を形成
した状態でリング状永久磁石の磁束密度を測定できるの
で、精度の高い永久磁石の磁束密度の測定ができる。Therefore, the apparatus for evaluating a permanent magnet according to the present invention can measure the magnetic flux density of the ring-shaped permanent magnet while the ring-shaped permanent magnet is rotating and the magnetic circuit is formed. Measurement of magnetic flux density is possible.
【００２４】また、磁電変換素子は金属製治具にて固定
されているため、評価装置等の影響を受けない。したが
って、永久磁石表面からホール素子までの距離、ホール
素子の傾きを常に一定して精度良く評価できる。Further, since the magnetoelectric conversion element is fixed by a metal jig, it is not affected by the evaluation device or the like. Therefore, the distance from the surface of the permanent magnet to the Hall element and the inclination of the Hall element can be constantly and accurately evaluated.
【００２５】なお、リング状磁石と台座部との間で磁気
回路を構成する場合、台座部は磁性体金属とする必要が
あるが、ロッド部は磁性体金属であっても、アルミ材等
の非磁性体金属であってもよい。また、磁性体回路を必
要としない場合は、台座部を特に磁性体金属としなくて
も、アルミ材等の非磁性体金属であってもよい。また、
台座部としてモータのロータコア（円柱体に複数のスロ
ット部を備える磁性体）を用いることで、実際のモータ
駆動に近い永久磁石の評価を行うことができる。When a magnetic circuit is formed between the ring-shaped magnet and the pedestal, the pedestal needs to be made of a magnetic metal. It may be a non-magnetic metal. If a magnetic circuit is not required, the pedestal portion may not be made of a magnetic metal, but may be a non-magnetic metal such as an aluminum material. Also,
By using a rotor core of a motor (a magnetic body having a plurality of slots in a cylindrical body) as a pedestal portion, it is possible to evaluate a permanent magnet that is close to an actual motor drive.
【００２６】（実施例２）図４において、真鍮、鉄材な
どからなる台座部４１は、３個のホール素子４２をはめ
込める溝４３を３本有し、その溝部はそれぞれホール素
子４２が直交するように形成している。また、ホール素
子４２の中心位置は、台座部４１の中心からの距離と端
面からの距離が等しくなるように形成されている。(Embodiment 2) In FIG. 4, a pedestal portion 41 made of brass, iron, or the like has three grooves 43 into which three Hall elements 42 can be fitted. It is formed as follows. The center position of the Hall element 42 is formed such that the distance from the center of the pedestal portion 41 is equal to the distance from the end face.
【００２７】したがって、この永久磁石評価装置を利用
して永久磁石を評価すると、磁束密度の３次元測定がで
き、従来の１次元での評価に比べて高精度に表面磁束密
度測定ができる。Therefore, when the permanent magnet is evaluated using this permanent magnet evaluation device, the magnetic flux density can be measured three-dimensionally, and the surface magnetic flux density can be measured with higher accuracy than the conventional one-dimensional evaluation.
【００２８】[0028]
【発明の効果】本願請求項１、２、３、１１記載の永久
磁石の評価装置は磁電変換素子を金属製治具に取り付け
ているために、磁電変換素子を高精度で固定し、高い精
度で磁束密度を測定することができる。According to the apparatus for evaluating a permanent magnet according to the first, second, third, and eleventh aspects of the present invention, since the magnetoelectric conversion element is mounted on a metal jig, the magnetoelectric conversion element is fixed with high accuracy, and high accuracy is achieved. Can measure the magnetic flux density.
【００２９】更に、請求項４、５、１１、１２記載の永
久磁石の評価装置は永久磁石の着磁状態を３次元的に評
価することができる。Further, the permanent magnet evaluation device according to the fourth, fifth, eleventh and twelfth aspects can three-dimensionally evaluate the magnetized state of the permanent magnet.
【００３０】本願請求項６、７、８、９記載の発明は永
久磁石をモータに組み込んだことと同じ磁気回路が構成
できるため、モータ特性と相関のとれた永久磁石の着磁
状態の評価ができる。According to the present invention, since the same magnetic circuit as that in which the permanent magnet is incorporated in the motor can be constructed, the magnetized state of the permanent magnet correlated with the motor characteristics can be evaluated. it can.
【００３１】更に、請求項１１記載の発明は、よりモー
タ特性と相関のとれた永久磁石の着磁状態の評価ができ
る。Further, according to the eleventh aspect of the present invention, it is possible to evaluate the magnetization state of the permanent magnet which is more correlated with the motor characteristics.
【図１】本願実施例１の永久磁石の評価装置を示す図FIG. 1 is a diagram showing a permanent magnet evaluation device according to a first embodiment of the present invention.
【図２】同永久磁石評価装置の台座部の組立方法を示す
図FIG. 2 is a view showing a method of assembling a pedestal portion of the permanent magnet evaluation device.
【図３】同永久磁石評価装置の台座部を示す図FIG. 3 is a diagram showing a pedestal portion of the permanent magnet evaluation device.
【図４】同実施例２を示す図FIG. 4 is a view showing the second embodiment.
【図５】従来の永久磁石評価装置を示す図FIG. 5 is a diagram showing a conventional permanent magnet evaluation device.
２ ホール素子 ３ 台座部 ４ アーム部 １０ リング状永久磁石 2 Hall element 3 Base 4 Arm 10 Ring permanent magnet
Claims (12)
変換素子を取り付けた永久磁石の評価装置。1. An evaluation device for a permanent magnet in which a magnetoelectric conversion element is attached to a metal jig fixed to a stationary arm.
り連結した請求項１記載の永久磁石の評価装置。2. The permanent magnet evaluation device according to claim 1, wherein the magnetoelectric conversion element and the display device are connected by a connection line.
座部と、この台座部と静止アームとを連結するロッド部
とからなる請求項１記載の永久磁石の評価装置。3. The permanent magnet evaluation device according to claim 1, wherein the metal jig includes a pedestal portion for fixing the magnetoelectric conversion element and a rod portion connecting the pedestal portion and the stationary arm.
けた請求項２記載の永久磁石の評価装置。4. The permanent magnet evaluation device according to claim 2, wherein a plurality of magneto-electric conversion elements are mounted on the base.
ように台座部に配置した請求項４記載の永久磁石の評価
装置。5. The permanent magnet evaluation device according to claim 4, wherein the three magnetoelectric conversion elements are arranged on the pedestal so as to be orthogonal to each other.
を固定した永久磁石の評価装置。6. An evaluation device for a permanent magnet in which a magnetoelectric conversion element is fixed to a base made of a magnetic metal.
載の永久磁石の評価装置。7. The apparatus for evaluating a permanent magnet according to claim 6, wherein the pedestal has a cylindrical shape.
記載の永久磁石の評価装置。8. The shape of the pedestal portion is a polygonal column.
An evaluation device for a permanent magnet as described.
６記載の永久磁石の評価装置。9. The permanent magnet evaluation device according to claim 6, wherein a motor core is used as the pedestal portion.
転台の中心点と台座部の中心点とが同一になるように、
前記回転台の上方で台座部を固定する静止アームとを備
えた請求項６記載の永久磁石の評価装置。10. A turntable on which a permanent magnet is mounted, and a center point of the turntable and a center point of a pedestal portion are the same.
7. The permanent magnet evaluation device according to claim 6, further comprising: a stationary arm for fixing a pedestal portion above the turntable.
る請求項１又は請求項６記載の永久磁石評価装置。11. The permanent magnet evaluation device according to claim 1, wherein the magnetic flux density is measured by a magnetoelectric conversion element.
り、永久磁石と磁電変換素子との間隔を一定の状態で保
持し、永久磁石の磁束密度を測定する永久磁石の測定方
法。12. A method for measuring a permanent magnet, wherein the distance between the permanent magnet and the magnetoelectric conversion element is kept constant by the permanent magnet evaluation device according to claim 6, and the magnetic flux density of the permanent magnet is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9309798A JPH11295403A (en) | 1998-04-06 | 1998-04-06 | Apparatus for evaluating permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9309798A JPH11295403A (en) | 1998-04-06 | 1998-04-06 | Apparatus for evaluating permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11295403A true JPH11295403A (en) | 1999-10-29 |
Family
ID=14073029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9309798A Withdrawn JPH11295403A (en) | 1998-04-06 | 1998-04-06 | Apparatus for evaluating permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11295403A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308458A (en) * | 2004-04-19 | 2005-11-04 | Dmt:Kk | Magnet analysis system and magnet analysis program |
| JP2009052963A (en) * | 2007-08-24 | 2009-03-12 | Denso Corp | Magnetic vector distribution measuring probe |
| CN102540109A (en) * | 2010-12-21 | 2012-07-04 | 富泰华工业（深圳）有限公司 | Magnetic field measuring instrument |
| CN102565703A (en) * | 2011-06-17 | 2012-07-11 | 江苏省电力公司 | Method for on-line recognizing and obtaining characteristic parameters of direct-drive permanent magnet synchronous wind turbine |
| JP2015099053A (en) * | 2013-11-18 | 2015-05-28 | 株式会社日立産機システム | Selection method of magnet material, magnetic measuring device used in the same, and permanent magnet motor configured by using the selection method |
| CN115586472A (en) * | 2022-11-10 | 2023-01-10 | 南通鑫磁机械制造有限公司 | Test platform with interference simulation function for testing performance of electromagnet |
-
1998
- 1998-04-06 JP JP9309798A patent/JPH11295403A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308458A (en) * | 2004-04-19 | 2005-11-04 | Dmt:Kk | Magnet analysis system and magnet analysis program |
| JP2009052963A (en) * | 2007-08-24 | 2009-03-12 | Denso Corp | Magnetic vector distribution measuring probe |
| CN102540109A (en) * | 2010-12-21 | 2012-07-04 | 富泰华工业（深圳）有限公司 | Magnetic field measuring instrument |
| CN102565703A (en) * | 2011-06-17 | 2012-07-11 | 江苏省电力公司 | Method for on-line recognizing and obtaining characteristic parameters of direct-drive permanent magnet synchronous wind turbine |
| JP2015099053A (en) * | 2013-11-18 | 2015-05-28 | 株式会社日立産機システム | Selection method of magnet material, magnetic measuring device used in the same, and permanent magnet motor configured by using the selection method |
| CN115586472A (en) * | 2022-11-10 | 2023-01-10 | 南通鑫磁机械制造有限公司 | Test platform with interference simulation function for testing performance of electromagnet |
| CN115586472B (en) * | 2022-11-10 | 2023-12-29 | 上海字含玫技术开发有限公司 | Electromagnet performance test platform with interference simulation function |
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