JPH0748938B2 - Magnetizing device for frequency generator - Google Patents
Magnetizing device for frequency generatorInfo
- Publication number
- JPH0748938B2 JPH0748938B2 JP59170877A JP17087784A JPH0748938B2 JP H0748938 B2 JPH0748938 B2 JP H0748938B2 JP 59170877 A JP59170877 A JP 59170877A JP 17087784 A JP17087784 A JP 17087784A JP H0748938 B2 JPH0748938 B2 JP H0748938B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pulse
- magnetizing
- reference pulse
- motor
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は周波数発電機のロータマグネットを得るための
周波数発電機用着磁装置に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a magnetizing device for a frequency generator for obtaining a rotor magnet of the frequency generator.
従来よりこの種装置としては、円環状の着磁用鉄心に所
定のピッチでスロットを形成し、そのスロットに着磁用
コイルを巻装し、各スロット間のティース部にＮ極及び
Ｓ極を形成せしめ、該着磁用鉄心によって被着磁体に所
定ピッチパターンの着磁を行なう様にしたものが周知で
ある。Conventionally, as this type of device, slots are formed in a ring-shaped magnetizing core at a predetermined pitch, a magnetizing coil is wound around the slots, and N poles and S poles are provided at the teeth between the slots. It is well known that the magnetized iron core is used to magnetize the magnetized body in a predetermined pitch pattern.
ところが上記従来のものでは、被着磁体に着磁される磁
極の数は着磁用鉄心の極数にて決定されるため、異なる
極数のロータマグネットを得たい場合には、その極数に
合った着磁用鉄心を新たに必要とし、特に多種類のロー
タマグネットを得たい場合には、着磁用鉄心を多種類製
作しなければならず、その製作に多大な経費がかかり、
又、着磁する極数をかえたい場合にはその都度着磁用コ
イルを装着した着磁用鉄心を付け換えなければならず、
極めて面倒であり、総じて、被着磁体の極数変更には多
大な経費及び手間を必要とするのが実情であった。However, in the above-mentioned conventional one, the number of magnetic poles magnetized in the magnetized body is determined by the number of poles of the magnetizing iron core. If you need a new magnetizing core that suits your needs, and especially if you want to obtain many types of rotor magnets, you must make many types of magnetizing cores, and it costs a lot of money to make them.
Also, if you want to change the number of poles to be magnetized, you must replace the magnetizing iron core with the magnetizing coil attached each time.
It is extremely troublesome, and in general, changing the number of poles of the magnetized body requires a great deal of expense and labor.
従って本発明の目的は、被着磁体に対する極数変更を経
費をかけずしかも容易に行ない得る周波数発電機用着磁
装置を提供するにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a magnetizing device for a frequency generator, which can easily change the number of poles of a magnetized body at low cost.
本発明は、円環状をなす周波数発電機用被着磁体を回転
駆動するモータと、このモータの回転速度に応じた検出
パルスを発生する速度検出器と、基準周波数で基準パル
スを発生する基準パルス発生回路と、この基準パルス発
生回路からの基準パルスと前記速度検出器からの検出パ
ルスを比較して、これらの位相が一致するように前記モ
ータの回転速度を制御するモータ用制御回路と、前記速
度検出器で検出した前記モータの１回転当りのパルス数
をＡとしたとき、設定された着磁数に応じた分周比1/
（A/n）（但しｎはＡを割り切れる正の整数）で前記基
準パルスを分周して着磁基準パルスを作成する分周回路
と、この分周回路から得られた着磁基準パルスを任意に
逓倍する可変周波数逓倍回路と、この可変周波数逓倍回
路からの逓倍パルスに基づく速度で前記被着磁体に着磁
する磁気ヘッドを作動させる着磁回路とを具備し、以
て、被着磁体の回転速度に対する磁気ヘッドの着磁動作
速度を適宜設定することにより、所望の極数に着磁でき
る様にしたところに特徴を有する。The present invention is directed to a motor for rotationally driving an annular magnetized body for a frequency generator, a speed detector for generating a detection pulse according to the rotation speed of the motor, and a reference pulse for generating a reference pulse at a reference frequency. A generator circuit, a reference pulse from the reference pulse generator circuit and a detection pulse from the speed detector are compared, and a motor control circuit for controlling the rotation speed of the motor so that these phases match each other; When the number of pulses per revolution of the motor detected by the speed detector is A, the frequency division ratio 1 / according to the set number of magnetizations
(A / n) (where n is a positive integer that divides A) divides the reference pulse to generate a magnetization reference pulse, and a magnetization reference pulse obtained from this division circuit. A variable frequency multiplying circuit for arbitrarily multiplying; and a magnetizing circuit for operating a magnetic head that magnetizes the magnetized body at a speed based on the multiplied pulse from the variable frequency multiplying circuit. The magnetic recording head is characterized in that it can be magnetized to a desired number of poles by appropriately setting the magnetizing operation speed of the magnetic head with respect to the rotation speed.
以下本発明の一実施例につき図面を参照して説明する。
１はモータであり、これは非同期形モータから成り、モ
ータ回転速度に応じたパルスを発生する速度検出器２を
有する。この速度検出器２はロータリエンコーダから成
り、モータ１の１回転につきＡ個（例えば3600個）のパ
ルスを発生する。３は磁性体４を有する取付盤で、これ
はモータ１の回転軸にフライホイール５と共に直結され
ている。６は基準パルス発生回路であり、これは基準周
波数ｆ（Hz）で基準パルスP1を発生する様になってい
る。７はモータ用制御回路であり、これは位相同期化制
御回路８及び駆動回路９を有する。上記位相同期化制御
回路８は、位相比較器10,ローパスフィルター11及び電
圧・周波数変換器12を有し、基準パルス発生回路６から
の基準パルスP1と速度検出器２からの検出パルスとが与
えられると、その両入力パルスを比較してこれらの位相
差に応じた速度信号を駆動回路９に与えるようになって
おり、この駆動回路９はモータ１をその速度信号に応じ
て前記両入力パルスの位相が一致するように速度制御す
るようになっている。一方、13は分周回路で、これは基
準パルス発生回路６からの基準パルスP1を分周してその
分周パルスを着磁基準パルスP2として後述の着磁用制御
回路14に与える様になっている。この分周回路13の分周
比は例えば1/A（Ａは速度検出器２の１回転当りのパル
ス数）に定められている。14は着磁用制御回路であり、
これは可変周波数逓倍回路15及び着磁回路16を有する。
そして可変周波数逓倍回路15は位相比較器17,ローパス
フィルター18,電圧制御発振器19及び可変分周回路20を
有して成り、従って可変分周回路20の分周比を適宜変更
することにより逓倍数を例えば50〜500の範囲で任意に
設定し得る様になっていて、前記分周回路13からの着磁
基準パルスP2（分周パルス）を任意に逓倍してその逓倍
パルスを上記着磁回路16に与える様になっている。又、
着磁回路16は、第２図に示す如く、可変周波数逓倍回路
15からの逓倍パルスを波形整形してデューティ比50％の
矩形波もしくは正弦波を出力する波形整形回路21と、こ
の出力波の直流分をカットするコンデンサ22と、着磁レ
ベルを調節するボリューム23と、上記出力波を増幅する
増幅回路24とを有して成り、従ってこの着磁回路16は、
入力された逓倍パルスの有無の一周期にて磁気ヘッド25
の着磁用コイル25aにＮ極着磁用及びＳ極着磁用の交番
電流を与える。尚、上記磁気ヘッド25は位置調節装置26
により径方向に移動調節される様になっている。以上に
対し、27は周波数発電機被着磁体28を備えたロータで、
これは保持用マグネット29を取付盤３の磁性体４に吸着
させて該取付盤３に取付けられており、以て、上記被着
磁体28をモータ１により回転駆動せしめる様にしてい
る。An embodiment of the present invention will be described below with reference to the drawings.
Reference numeral 1 denotes a motor, which is composed of an asynchronous motor and has a speed detector 2 for generating a pulse according to the motor rotation speed. The speed detector 2 is composed of a rotary encoder and generates A (for example, 3600) pulses per one rotation of the motor 1. Reference numeral 3 denotes a mounting plate having a magnetic body 4, which is directly connected to the rotary shaft of the motor 1 together with the flywheel 5. Reference numeral 6 is a reference pulse generating circuit, which is adapted to generate a reference pulse P 1 at a reference frequency f (Hz). Reference numeral 7 is a motor control circuit, which has a phase synchronization control circuit 8 and a drive circuit 9. The phase synchronization control circuit 8 has a phase comparator 10, a low pass filter 11 and a voltage / frequency converter 12, and the reference pulse P 1 from the reference pulse generation circuit 6 and the detection pulse from the speed detector 2 are When given, the two input pulses are compared and a speed signal corresponding to these phase differences is given to the drive circuit 9, which drives the motor 1 according to the speed signals. The speed is controlled so that the phases of the pulses match. On the other hand, 13 is a frequency dividing circuit, which divides the reference pulse P 1 from the reference pulse generating circuit 6 and supplies the frequency-divided pulse as a magnetizing reference pulse P 2 to a magnetizing control circuit 14 described later. It has become. The frequency division ratio of the frequency dividing circuit 13 is set to, for example, 1 / A (A is the number of pulses per rotation of the speed detector 2). 14 is a magnetizing control circuit,
It has a variable frequency multiplier circuit 15 and a magnetizing circuit 16.
The variable frequency multiplying circuit 15 includes a phase comparator 17, a low-pass filter 18, a voltage controlled oscillator 19 and a variable frequency dividing circuit 20, and therefore the frequency dividing ratio of the variable frequency dividing circuit 20 can be changed as appropriate. Can be arbitrarily set within a range of 50 to 500, for example. The magnetizing reference pulse P 2 (dividing pulse) from the frequency dividing circuit 13 can be arbitrarily multiplied and the multiplied pulse can be used as the magnetizing pulse. It is designed to be applied to the circuit 16. or,
The magnetizing circuit 16 is a variable frequency multiplier circuit as shown in FIG.
A waveform shaping circuit 21 that shapes the multiplied pulse from 15 to output a rectangular wave or a sine wave with a duty ratio of 50%, a capacitor 22 that cuts the DC component of this output wave, and a volume 23 that adjusts the magnetization level. And an amplifier circuit 24 for amplifying the output wave, and thus the magnetizing circuit 16 is
The magnetic head 25 in one cycle with or without the input multiplied pulse
Alternating currents for N-pole magnetizing and S-pole magnetizing are applied to the magnetizing coil 25a. The magnetic head 25 is a position adjusting device 26.
The movement is adjusted in the radial direction. On the other hand, 27 is a rotor equipped with a frequency generator magnetized body 28,
This is because the holding magnet 29 is attached to the magnetic body 4 of the mounting board 3 and attached to the mounting board 3, so that the magnetized body 28 is rotated by the motor 1.
さて上記構成の作用を説明する。今、取付盤３をＮ（r.
p.s）で回転させるものとして、基準パルス発生回路６
の基準周波数ｆをＡ・Ｎ（HZ）に設定してあるものとす
る。而して、基準パルス発生回路６から出力される基準
パルスP1はモータ制御用回路７の位相同期化制御回路８
に与えられるので、モータ１は、該基準パルスP1と速度
検出器２からの検出パルスとの位相が一致する速度即ち
Ｎ（r.p.s）で回転駆動され、又、基準パルスP1は分周
回路13に与えられて分周され、この分周回路13から着磁
基準パルスP2が出力される。ここでこの分周回路13の分
周比が1/Aであるから、この分周回路13からＮ（HZ）即
ち被着磁体28の１回転当り１パルスの着磁基準パルスP2
が可変周波数逓倍回路15に与えられ、この可変周波数逓
倍回路15の逓倍数を例えば50とすると50N（HZ）の逓倍
パルスが着磁回路16に与えられる。従ってこの場合、被
着磁体28の１回転当り50（50N/N）パルス分従って極数
としてはＮ極・Ｓ極で100極の着磁が行なわれる。この
ことから判る様に、可変周波数逓倍回路15の逓倍数を50
〜500の範囲で任意に設定することにより、被着磁体28
に対し所望数の着磁を行なうことができる。Now, the operation of the above configuration will be described. Now, attach the mounting board 3 to N (r.
ps) to rotate the reference pulse generator circuit 6
It is assumed that the reference frequency f of is set to A · N (HZ). Thus, the reference pulse P 1 output from the reference pulse generation circuit 6 is the phase synchronization control circuit 8 of the motor control circuit 7.
Therefore, the motor 1 is rotationally driven at a speed where the phase of the reference pulse P 1 and the detection pulse from the speed detector 2 match, that is, N (rps), and the reference pulse P 1 is divided by a frequency dividing circuit. The frequency is given to the frequency division circuit 13, and the frequency division circuit 13 outputs a magnetizing reference pulse P 2 . Since the frequency dividing ratio of the frequency dividing circuit 13 is 1 / A, the frequency dividing circuit 13 outputs N (HZ), that is, a magnetizing reference pulse P 2 of 1 pulse per one rotation of the magnetized body 28.
Is given to the variable frequency multiplication circuit 15, and when the multiplication number of the variable frequency multiplication circuit 15 is 50, for example, a multiplication pulse of 50 N (HZ) is given to the magnetizing circuit 16. Therefore, in this case, magnetization of 50 (50 N / N) pulses per rotation of the magnetized body 28, that is, 100 poles with N and S poles is performed. As can be seen from this, the multiplication number of the variable frequency multiplication circuit 15 is 50
By setting any value within the range of up to 500
A desired number of magnets can be magnetized.
この様に本実施例によれば、基準周波数で基準パルスP1
を発生する基準パルス発生回路６を設けると共に、この
基準パルス発生回路６からの基準パルスP1に基づく速度
でモータ１を回転させるモータ用制御回路８を設けて、
被着磁体28を基準パルスP1に応じた速度で回転駆動させ
る様にする一方、前記基準パルスP1に基づく着磁基準パ
ルスP2を任意に逓倍する可変周波数逓倍回路15を有しこ
の可変周波数逓倍回路15からの逓倍パルスに応じた速度
で磁気ヘッド25による着磁を行なう様にしたので、被着
磁体28の回転速度に対する磁気ヘッド25の着磁動作速度
を適宜設定することができ、即ち、被着磁体28に対する
着磁数を適宜設定でき、よって、被着磁体に対する着磁
数を変更する場合に新たな着磁用鉄心を作製しなければ
ならなかった従来とは違って、極数変更に際して経費を
かけずにこれを達成でき、しかも着磁用鉄心の付け換え
等といった面倒な作業も要さず、即ち、簡単に極数変更
を行ない得る。さらに、上記従来では円環状の着磁用鉄
心を用いるため、そのティース部の製作精度によっては
着磁精度が悪くなる不具合があるが、本実施例では、磁
気ヘッド25を用いてこれを着磁用のパルスで動作させる
ので、所定ピッチの着磁パターンを正確に得ることがで
き、よって着磁精度の向上も図り得る。Thus, according to this embodiment, the reference pulse P 1
And a motor control circuit 8 for rotating the motor 1 at a speed based on the reference pulse P 1 from the reference pulse generation circuit 6,
While the manner is rotated at a speed corresponding to the magnetized body 28 to the reference pulse P 1, the variable has a variable frequency multiplying circuit 15 for arbitrarily multiply the magnetized reference pulse P 2 that is based on the reference pulse P 1 Since the magnetic head 25 magnetizes the magnetic head 25 at a speed corresponding to the multiplied pulse from the frequency multiplication circuit 15, the magnetizing operation speed of the magnetic head 25 with respect to the rotational speed of the magnetized body 28 can be appropriately set. That is, the number of magnetizations to the magnetized body 28 can be appropriately set, and therefore, when changing the number of magnetizations to the magnetized body, a new magnetizing iron core has to be produced, which is different from the conventional method. This can be achieved at a low cost when changing the number, and the troublesome work such as changing the magnetizing iron core is not required, that is, the number of poles can be easily changed. Furthermore, in the above-mentioned conventional method, since the annular magnetizing iron core is used, there is a problem that the magnetizing accuracy is deteriorated depending on the manufacturing accuracy of the tooth portion, but in the present embodiment, the magnetic head 25 is used to magnetize this. Since it is operated with a pulse for a magnetic field, it is possible to accurately obtain a magnetizing pattern with a predetermined pitch, and thus to improve the magnetizing accuracy.
又、本実施例によれば、モータ１を非同期形モータから
構成したが、この場合、モータ回転速度に応じたパルス
を発生する速度検出器２を該モータ１に設け、モータ用
制御回路７に、基準パルスP1と上記速度検出器２からの
検出パルスとを比較してこれらの位相が一致する様に制
御する位相同期化制御回路８を設けたので、モータ１の
速度制御を容易に図り得ると共に、モータ１の回転を安
定させ得、しかもモータ１を駆動せしめるパルスと着磁
を行なわせしめるパルスとを同期化できて、着磁パター
ンにずれ等が発生することを確実に防止でき、着磁精度
を一層高め得る。特にこの場合基準パルスP1を分周して
着磁基準パルスP2を出力する分周回路13の分周比を1/A
に設定したので、被着磁体28の１回転に対し１パルス分
の着磁基準パルスP2を可変周波数逓倍回路15に与えるこ
とになって、可変周波数逓倍回路15による設定逓倍数を
そのまま被着磁体28に対する着磁数とすることができ、
着磁数設定を極めて容易ならしめ得る。Further, according to the present embodiment, the motor 1 is composed of an asynchronous motor, but in this case, the motor 1 is provided with the speed detector 2 for generating a pulse according to the motor rotation speed, and the motor control circuit 7 is provided with the speed detector 2. , The reference pulse P 1 and the detection pulse from the speed detector 2 are compared, and the phase synchronization control circuit 8 for controlling the phases to match each other is provided, so that the speed control of the motor 1 can be easily performed. At the same time, the rotation of the motor 1 can be stabilized, and the pulse for driving the motor 1 and the pulse for magnetizing can be synchronized, and it is possible to reliably prevent the deviation of the magnetization pattern from occurring. The magnetic accuracy can be further improved. In particular the frequency division ratio of the frequency divider 13 for outputting a magnetized reference pulse P 2 the reference pulse P 1 in this case by dividing 1 / A
Since the magnetized reference pulse P 2 for one rotation is applied to the variable frequency multiplication circuit 15 for one rotation of the magnetized body 28, the number of multiplications set by the variable frequency multiplication circuit 15 is applied as it is. It can be the number of magnetizations to the magnetic body 28,
Setting the number of magnetizations can be extremely easy.
さらに本実施例によれば、位置調節装置26を設けて磁気
ヘッド25を移動調整し得る様にしたので、被着磁体28の
大きさ（径方向の大きさ）が異なる場合にこれに対処し
得、従って被着磁体28の大きさの変更にも容易に対処し
得る。Further, according to the present embodiment, the position adjusting device 26 is provided so that the magnetic head 25 can be moved and adjusted. Therefore, it is possible to cope with the case where the size of the magnetized body 28 (the size in the radial direction) is different. Therefore, it is possible to easily deal with the change of the size of the magnetized body 28.
尚、上記実施例では分周回路13の分周比を1/Aに設定し
たが、その分周比を1/（A/n）（但しｎはＡを割り切れ
る正の整数）に設定してもよく、この場合、可変周波数
逓倍回路15における設定逓倍数のｎ倍のパルスを着磁回
路16に与えることができて着磁数の増加を図り得る。さ
らに上記実施例では着磁基準パルスP2を、基準パルスP1
を分周して得る様にしたが、基準パルスP1に基づいて所
定数のパルスを発生する速度検出器（例えば２）の検出
パルスをもって着磁基準パルスとしてもよい。Although the frequency division ratio of the frequency dividing circuit 13 is set to 1 / A in the above embodiment, the frequency division ratio is set to 1 / (A / n) (where n is a positive integer divisible by A). Of course, in this case, n times as many pulses as the set multiplication number in the variable frequency multiplication circuit 15 can be applied to the magnetization circuit 16 to increase the number of magnetizations. Further, in the above-described embodiment, the magnetizing reference pulse P 2 is the reference pulse P 1
However, the magnetization reference pulse may be a detection pulse of a speed detector (for example, 2) that generates a predetermined number of pulses based on the reference pulse P 1 .
その他本発明は上記し且つ図面に示す実施例のみに限定
されず、要旨を逸脱しない範囲内で種々変更して実施で
きる。Others The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.
本発明は以上説明した様に、円環状をなす周波数発電機
用被着磁体を回転駆動するモータと、このモータの回転
速度に応じた検出パルスを発生する速度検出器と、基準
周波数で基準パルスを発生する基準パルス発生回路と、
この基準パルス発生回路からの基準パルスと前記速度検
出器からの検出パルスを比較して、これらの位相が一致
するように前記モータの回転速度を制御するモータ用制
御回路と、前記速度検出器で検出した前記モータの１回
転当りのパルス数をＡとしたとき、設定された着磁数に
応じた分周比1/（A/n）（但しｎはＡを割り切れる正の
整数）で前記基準パルスを分周して着磁基準パルスを作
成する分周回路と、この分周回路から得られた着磁基準
パルスを任意に逓倍して実際の着磁数に対応した逓倍パ
ルスを得る可変周波数逓倍回路と、この可変周波数逓倍
回路からの逓倍パルスに基づく速度で前記被着磁体に着
磁する磁気ヘッドを作動させる着磁回路とを具備してな
るものであり、これにて、被着磁体に対する極数変更
を、経費をかけずにしかも極めて容易に行ない得るとい
う優れた効果を奏する。INDUSTRIAL APPLICABILITY As described above, the present invention provides a motor for rotationally driving a magnetized body for an annular frequency generator, a speed detector for generating a detection pulse according to the rotational speed of the motor, and a reference pulse for a reference frequency. A reference pulse generation circuit for generating
The reference pulse from the reference pulse generation circuit and the detection pulse from the speed detector are compared, and the motor control circuit for controlling the rotation speed of the motor so that these phases match each other, and the speed detector. Assuming that the detected number of pulses per rotation of the motor is A, the frequency division ratio 1 / (A / n) (where n is a positive integer divisible by A) according to the set magnetization number is used as the reference. Divider circuit that divides the pulse to create a magnetized reference pulse, and variable frequency that obtains a multiplied pulse corresponding to the actual number of magnetization by arbitrarily multiplying the magnetized reference pulse obtained from this divider circuit. It comprises a multiplier circuit and a magnetizing circuit for operating a magnetic head which magnetizes the magnetized body at a speed based on the frequency-multiplied pulse from the variable frequency multiplier circuit. No change in the number of poles for Also it exhibits the excellent effect that can perform very easily.
図面は本発明の一実施例を示し、第１図は被着磁体の駆
動部部分と共に示すブロック線図、第２図は着磁回路の
ブロック線図である。 図中、１はモータ、２は速度検出器、６は基準パルス発
生回路、７はモータ用制御回路、８は位相同期化制御回
路、13は分周回路、14は着磁用制御回路、15は可変周波
数逓倍回路、25は磁気ヘッド、26は位置調節装置、28は
被着磁体である。The drawings show an embodiment of the present invention. FIG. 1 is a block diagram showing the drive part of a magnetized body, and FIG. 2 is a block diagram of a magnetizing circuit. In the figure, 1 is a motor, 2 is a speed detector, 6 is a reference pulse generating circuit, 7 is a motor control circuit, 8 is a phase synchronization control circuit, 13 is a frequency dividing circuit, 14 is a magnetizing control circuit, 15 Is a variable frequency multiplication circuit, 25 is a magnetic head, 26 is a position adjusting device, and 28 is a magnetized body.
フロントページの続き (56)参考文献 特開 昭50−129997（ＪＰ，Ａ) 特開 昭53−88195（ＪＰ，Ａ) 特開 昭55−127874（ＪＰ，Ａ) 実開 昭58−27911（ＪＰ，Ｕ) 実開 昭59−127229（ＪＰ，Ｕ) 特公 昭56−928（ＪＰ，Ｂ２)Continuation of the front page (56) Reference JP-A-50-129997 (JP, A) JP-A-53-88195 (JP, A) JP-A-55-127874 (JP, A) Actual development Sho-58-27911 (JP , U) Actual Development Sho 59-127229 (JP, U) Japanese Patent Sho 56-928 (JP, B2)
Claims (2)
転駆動するモータと、このモータの回転速度に応じた検
出パルスを発生する速度検出器と、基準周波数で基準パ
ルスを発生する基準パルス発生回路と、この基準パルス
発生回路からの基準パルスと前記速度検出器からの検出
パルスを比較して、これらの位相が一致するように前記
モータの回転速度を制御するモータ用制御回路と、前記
速度検出器で検出した前記モータの１回転当りのパルス
数をＡとしたとき、設定された着磁数に応じた分周比1/
（A/n）（但しｎはＡを割り切れる正の整数）で前記基
準パルスを分周して着磁基準パルスを作成する分周回路
と、この分周回路から得られた着磁基準パルスを任意に
逓倍する可変周波数逓倍回路と、この可変周波数逓倍回
路からの逓倍パルスに基づく速度で前記被着磁体に着磁
する磁気ヘッドを作動させる着磁回路とを具備して成る
周波数発電機用着磁装置。1. A motor for rotating and driving an annular magnetized body for a frequency generator, a speed detector for generating a detection pulse according to the rotation speed of the motor, and a reference for generating a reference pulse at a reference frequency. A pulse generator circuit, a reference pulse from the reference pulse generator circuit and a detection pulse from the speed detector are compared, and a motor control circuit for controlling the rotation speed of the motor so that these phases match each other, When the number of pulses per revolution of the motor detected by the speed detector is A, the frequency division ratio 1 /
(A / n) (where n is a positive integer that divides A) divides the reference pulse to generate a magnetization reference pulse, and a magnetization reference pulse obtained from this division circuit. A magnetizing circuit for a frequency generator comprising a variable frequency multiplying circuit for arbitrarily multiplying, and a magnetizing circuit for operating a magnetic head for magnetizing the magnetized body at a speed based on a multiplying pulse from the variable frequency multiplying circuit. Porcelain device.
な構成であることを特徴とする特許請求の範囲第１項に
記載の周波数発電機用着磁装置。2. The magnetizing device for a frequency generator according to claim 1, wherein the magnetic head is configured to be movable and adjustable with respect to the magnetized body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59170877A JPH0748938B2 (en) | 1984-08-16 | 1984-08-16 | Magnetizing device for frequency generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59170877A JPH0748938B2 (en) | 1984-08-16 | 1984-08-16 | Magnetizing device for frequency generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6149639A JPS6149639A (en) | 1986-03-11 |
| JPH0748938B2 true JPH0748938B2 (en) | 1995-05-24 |
Family
ID=15912966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59170877A Expired - Lifetime JPH0748938B2 (en) | 1984-08-16 | 1984-08-16 | Magnetizing device for frequency generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0748938B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656261B (en) * | 2016-03-16 | 2018-01-26 | 南通冠优达磁业有限公司 | The high-voltage pulse magnetizing apparatus of counter electromotive force of motor k-factor drops |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934092Y2 (en) * | 1981-08-13 | 1984-09-21 | 住友特殊金属株式会社 | Assembly magnetizing device |
-
1984
- 1984-08-16 JP JP59170877A patent/JPH0748938B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6149639A (en) | 1986-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0564608B1 (en) | Apparatus and related method to compensate for torque ripple in a permanent magnet electric motor | |
| US4507590A (en) | Brushless DC motor | |
| US5036264A (en) | Brushless motor with no rotor-position sensor | |
| US7141945B2 (en) | Method and apparatus for controlling motor drive | |
| US5084663A (en) | Control arrangement for a reluctance motor | |
| US5006774A (en) | Torque angle control system for controlling the torque angle of a permanent magnet synchronous motor | |
| US7282878B1 (en) | Systems for brushless DC electrical drive control | |
| US4717864A (en) | Speed control method and apparatus for electronically commutated motors | |
| CA1057352A (en) | Brushless phase locked servo drive | |
| JPS58500146A (en) | Chart drive device with micro-stepping controlled by microprocessor | |
| JPH0748938B2 (en) | Magnetizing device for frequency generator | |
| JPS6316689B2 (en) | ||
| US6204625B1 (en) | Driving apparatus for stepping motor | |
| JP2003204692A (en) | Pwm drive circuit for motor | |
| JP4201886B2 (en) | DC brushless motor speed control device | |
| JP2007336653A (en) | Motor speed control circuit | |
| JP3584622B2 (en) | Motor control device | |
| JP3240789B2 (en) | Brushless motor | |
| JPH01156603A (en) | Rotational signal generating device | |
| JPS62141998A (en) | Driving method of brushless motor | |
| JPS62460B2 (en) | ||
| JPH0759378A (en) | Method and device for controlling brushless motor | |
| JPH0757114B2 (en) | Brushless DC motor drive | |
| SU817895A1 (en) | Rotor postion sensor | |
| JPS63213494A (en) | Low-speed high-torque motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |