JPS6154074A - Device for controlling spindle rotation - Google Patents
Device for controlling spindle rotationInfo
- Publication number
- JPS6154074A JPS6154074A JP17490084A JP17490084A JPS6154074A JP S6154074 A JPS6154074 A JP S6154074A JP 17490084 A JP17490084 A JP 17490084A JP 17490084 A JP17490084 A JP 17490084A JP S6154074 A JPS6154074 A JP S6154074A
- Authority
- JP
- Japan
- Prior art keywords
- spindle
- motor
- speed
- circuit
- motors
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
Landscapes
- Rotational Drive Of Disk (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、情報の読み出し又は、書込み及び読み出しを
行なう記録媒体を固定したスピンドルを回転させるスピ
ンドルモータ機構に係す、制御性が良く回転精度のすぐ
れた、スピンドルの回転速度制御装置に関する。Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to a spindle motor mechanism that rotates a spindle to which a recording medium on which information is read, written, and read is fixed, and which has good controllability and rotational precision. This invention relates to an excellent spindle rotation speed control device.
磁気ディスク装置に使用されているＤＣモータを使用し
たスピンドルモータ機構は、従来第１図のような構造と
なっており、スピンドルの回転速度制御は一定方向のみ
制御を行なう方法が取られていた。これは、加速方向へ
の回転のみ制御するもので、スピンドルが規準回転以上
の速度になれば、モータへの加速電流がストップされス
ピンドルは、スピンドル等の回転系の粘性制動トルクや
負荷トルク等で減速される。規準回転速度以下になるま
で制御回路は働かない。A spindle motor mechanism using a DC motor used in a magnetic disk device has conventionally had a structure as shown in FIG. 1, and the rotational speed of the spindle has been controlled only in a fixed direction. This controls only the rotation in the acceleration direction, and when the spindle reaches a standard rotation speed or higher, the acceleration current to the motor is stopped and the spindle is controlled by the viscous braking torque, load torque, etc. of the rotating system such as the spindle. Slowed down. The control circuit does not work until the rotational speed falls below the standard rotational speed.
したがって加速と減速において応答特性が極端に違って
おり、回転精度が低い。又一方向しか制御しないため、
制御性も悪い。Therefore, the response characteristics are extremely different between acceleration and deceleration, and rotation accuracy is low. Also, since it only controls one direction,
Controllability is also poor.
本発明の目的は、スピンドルの回転制御の回転精度を向
上させ、制御性の良いスピンドルの回転速度制御装置を
提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a spindle rotation speed control device that improves the rotation accuracy of spindle rotation control and has good controllability.
最近のＣ，Ｓ、Ｓ方式の磁気ディスク装置におけるスピ
ンドルモータは、ヘッドとディスクの接触時間を短くす
るために、より速い立上りが要求される。そのため、起
動時は非常に大きな駆動力を生み出せる■モータが必要
となる。しかし、ＤＣモータにおける回転数とトルクの
関係は反比例しているため、高速回転中は小さな駆動力
のモータで駆動が可能である。そこで、従来のスピンド
ルモータ機構第１図におけるスピンドルモータ１０２を
その半分の駆動力を持つ２個のモータに分け、性能的に
静画である第２図に示す構造とする。Spindle motors in recent C, S, S type magnetic disk drives are required to start up faster in order to shorten the contact time between the head and the disk. Therefore, a motor that can generate a large amount of driving force during startup is required. However, since the relationship between the number of rotations and the torque of a DC motor is inversely proportional, it is possible to drive the motor with a small driving force during high-speed rotation. Therefore, the spindle motor 102 in the conventional spindle motor mechanism shown in FIG. 1 is divided into two motors each having half the driving force, and the structure shown in FIG. 2, which is static in terms of performance, is adopted.
本発明は、起動時はモータ１とモータ２を併用して速い
立上りを得る。定常回転中の回転速度制御は加速方向の
駆動力を出すモータ１と減速方向の駆動力に切替えられ
たモータ２を使用しル１ｊ御をかけると、両方向回転制
御を行なうことができるようにしたものである。The present invention uses motor 1 and motor 2 together at the time of startup to obtain a fast start-up. Rotational speed control during steady rotation uses motor 1, which outputs a driving force in the acceleration direction, and motor 2, which is switched to a driving force in the deceleration direction, and by controlling the motor 1j, bidirectional rotation control can be performed. It is something.
以下第３図により本発明の実施例を示す。 An embodiment of the present invention will be shown below with reference to FIG.
スピンドルを回転させるモータ１．２とモータ１．２の
内部に取付けられロータ位置を検出する位置検出素子３
，４、モータ１，２に励磁電流を流しモータ１，２を駆
動する駆動アンプ５．６、加速用の論理回路７、減速用
の論理回路８、の接続及び切離しを行なうＳＷｌ 、
ＳＷ３、モータ２を加速。A motor 1.2 that rotates the spindle and a position detection element 3 that is installed inside the motor 1.2 and detects the rotor position.
, 4, SWl for connecting and disconnecting the drive amplifier 5.6 that sends excitation current to the motors 1 and 2 to drive the motors 1 and 2, the acceleration logic circuit 7, and the deceleration logic circuit 8;
SW3, accelerate motor 2.
減速に切替えるＳＷ２、スピンドルを一定回転に保つた
めの規定速度発生回路１０の出力と、速度パルスの周波
数を電圧に変換するＦ／Ｖ器１１の出力を比較し、モー
タ速度を判断しＳＷｌ 、 ２ 、５のＯＮ。SW2 switches to deceleration, compares the output of the specified speed generation circuit 10 for keeping the spindle at a constant rotation, and the output of the F/V unit 11 that converts the frequency of speed pulses into voltage, and determines the motor speed. , 5 ON.
ＯＦＦを行なう比較回路９と、比較回路９の出力と５Ｔ
ＡＲＴ？／５ＴＯＰ信号により定常回転ウシ２を減速論
理回路８側に接続固定するラッチ回路１２と、位置検出
素子３．４の出力により転流及び速度パルスを作成する
分配回路１５より成る。モータ１゜２はスピンドルに直
結されているがスピンドルについては図示され【いない
。The comparison circuit 9 that turns off, the output of the comparison circuit 9 and 5T
ART? It consists of a latch circuit 12 that connects and fixes the steady rotating cow 2 to the deceleration logic circuit 8 side in response to the /5TOP signal, and a distribution circuit 15 that creates commutation and speed pulses based on the output of the position detection element 3.4. The motors 1.2 are directly connected to a spindle, but the spindle is not shown.
起動開始前、ＳＷ２はラッチ回路により加速論理側に接
続され、比較回路９によりＳＷｌはＯＮ 。Before starting, SW2 is connected to the acceleration logic side by the latch circuit, and SW1 is turned ON by the comparison circuit 9.
ＳＷ５はＯＦＦとなっている。起動がかかるとモータ１
，２は加速論理回路により駆動アンプ５．６で駆動され
スピンドルを正転方向に回す。規定速度発生回路９の出
力と速度パルスによるｆ器の出力との比較により、モー
タ１，２が規定速度以上になると比較回路９はラッチ回
路１２によりＳＷ２を減速論理側に接続すると共に、Ｓ
ＷｌをＯＦＦ。SW5 is OFF. When starting, motor 1
, 2 are driven by a drive amplifier 5.6 by an acceleration logic circuit to rotate the spindle in the normal rotation direction. By comparing the output of the specified speed generation circuit 9 and the output of the f-unit based on the speed pulse, when the motors 1 and 2 reach a specified speed or higher, the comparator circuit 9 connects SW2 to the deceleration logic side by the latch circuit 12, and
Turn off Wl.
−ＳＷ３をＯＮにし、モータ１の加速駆動力をなくし減
速論理回路８、駆動アンプ６によりモータ２を減速しス
ピンドルの速度を遅くする。モータ１．２の速度が規定
速度以下になると比較回路９ｋｔ ＳＷｌをＯＮ 、
ＳＷ５ ヲＯＦＦ Ｋ ｔ、 （ＳＷ２ ハ５ＴＯＰ信
号が入力されるまでラッチ回路により減速論理側に接続
されたままである。尚、本図には図示していないがモー
タ１，２のブレーキ方式には相間短絡方式をとっている
。）モータ２の減速駆動力をな（し、加速論理回路７、
駆動アンプ５によりモータ１を加速しスピンドルの速度
を上げる。-Turn on SW3 to eliminate the acceleration driving force of the motor 1, decelerate the motor 2 by the deceleration logic circuit 8 and drive amplifier 6, and reduce the speed of the spindle. When the speed of motor 1.2 falls below the specified speed, the comparison circuit 9kt SWl is turned on.
SW5 OFF Kt, (SW2 remains connected to the deceleration logic side by the latch circuit until the 5TOP signal is input.Although not shown in this diagram, the brake system for motors 1 and 2 has a (A short-circuit method is adopted.) The deceleration driving force of the motor 2 (and the acceleration logic circuit 7,
The drive amplifier 5 accelerates the motor 1 to increase the speed of the spindle.
これにより加速及び減速の両方向回転制御が行なわれる
。As a result, rotation control in both directions of acceleration and deceleration is performed.
本発明によれば、スピンドルの回転制御が両方向回転制
御となるため、制御性の改善及び回転精度の向上という
効果がある。According to the present invention, since the spindle rotation control is bidirectional rotation control, there are effects of improved controllability and rotation accuracy.
第１図は従来のスピンドルモータ構造図、第２図は本発
明の一実施例のスピンドルモータ構造図、
第３図は同じく本発明による回路ブロック図である。
１・・・モータ、 ２・・・モータ２．３・・
・モータ１の位置検出素子、
４・・・モータ２の位置検出素子、
５・・・モータ１の駆動アンプ、
６・・・七−夕２の駆動アンプ、
７・・・加速論理回路、 ８・・・減速論理回路、９・
・・比較回路、 １０・・・規定速度発生回路。FIG. 1 is a structural diagram of a conventional spindle motor, FIG. 2 is a structural diagram of a spindle motor according to an embodiment of the present invention, and FIG. 3 is a circuit block diagram according to the present invention. 1...Motor, 2...Motor 2.3...
- Position detection element of motor 1, 4... Position detection element of motor 2, 5... Drive amplifier of motor 1, 6... Drive amplifier of Tanabata 2, 7... Acceleration logic circuit, 8 ...Deceleration logic circuit, 9.
... Comparison circuit, 10... Specified speed generation circuit.
Claims (1)
ドルと、該スピンドルの回転制御を行なうスピンドルモ
ータからなるスピンドルモータ機構において、上記スピ
ンドルモータを２個設け、両方向回転制御を行なうスピ
ンドルの回転制御装置。1. In a spindle motor mechanism consisting of a plurality of recording media, a spindle to which the recording media are fixed, and a spindle motor that controls the rotation of the spindle, two spindle motors are provided to control the rotation of the spindle in both directions. Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17490084A JPS6154074A (en) | 1984-08-24 | 1984-08-24 | Device for controlling spindle rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17490084A JPS6154074A (en) | 1984-08-24 | 1984-08-24 | Device for controlling spindle rotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6154074A true JPS6154074A (en) | 1986-03-18 |
Family
ID=15986651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17490084A Pending JPS6154074A (en) | 1984-08-24 | 1984-08-24 | Device for controlling spindle rotation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6154074A (en) |
-
1984
- 1984-08-24 JP JP17490084A patent/JPS6154074A/en active Pending
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