JPS59198574A - Magnetic disc driving device - Google Patents
Magnetic disc driving deviceInfo
- Publication number
- JPS59198574A JPS59198574A JP7286583A JP7286583A JPS59198574A JP S59198574 A JPS59198574 A JP S59198574A JP 7286583 A JP7286583 A JP 7286583A JP 7286583 A JP7286583 A JP 7286583A JP S59198574 A JPS59198574 A JP S59198574A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- carriage
- disk
- retract
- voltage
- 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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、磁気ディスク駆動装置に関し、特にディスク
回転停止時におけるキャリッジリトラクト方式の改良に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic disk drive device, and more particularly to an improvement in a carriage retraction method when disk rotation is stopped.
磁気ディスク駆動装置において、ディスクの起動時、磁
気ヘッドは最初ディスクに接触しており、ディスクの回
転が上昇するに従って浮動を開始する。また、停止時は
ディスクの回転が下降するに従ってディスク接触しそい
く。これはＣ５５（コンタクト・スタート・ストップ）
方式と呼ばれている。ディスク回転中にディスクとヘッ
ドが接触する為、ディスク上のデータ保護を考慮して、
ヘッドはディスク上の特定エリアにおいてディスクの起
動、停止を行なう必要がある。一方ディスク停止は一般
に電源を切断した時に行なわれ、ヘッドを特定位置（リ
トラクト位ｆ）に戻すには通常電源を使用することがで
きない。そこで従来のキャリッジリトラクト方式は第１
図に示す様に、キャリッジ本体１にスブリンク２を用い
て引っばりキャリッジリトラクトを行なっているが、通
常のヘッド位置決め制御時、矢印の方向に常時力が加わ
っている為順方向移動制御時と逆方向移動制御時の力が
異なり、ヘッド位置決め制御時、ＶＣＭに印加すべき゛
１流に差が生じたり、またトラック追従制御時、定常的
に外力が加わっているため、トラック中心よりオフセッ
トしてしまう等悪影響をおよぼす。In a magnetic disk drive, when the disk is started, the magnetic head is initially in contact with the disk, and begins to float as the rotation of the disk increases. Furthermore, when the disk is stopped, as the rotation of the disk decreases, it becomes more likely that the disk will come into contact with the disk. This is C55 (contact start stop)
It is called a method. Since the disk and head come into contact with each other while the disk is rotating, we have taken into consideration the protection of the data on the disk.
The head needs to start and stop the disk in a specific area on the disk. On the other hand, the disk is generally stopped when the power is turned off, and the power cannot normally be used to return the head to a specific position (retract position f). Therefore, the conventional carriage retract method is the
As shown in the figure, a pull carriage retraction is performed using a sublink 2 on the carriage body 1, but during normal head positioning control, force is constantly applied in the direction of the arrow, which is opposite to that during forward movement control. The force during directional movement control is different, and there is a difference in the first flow that should be applied to the VCM during head positioning control.Also, during track following control, external force is constantly applied, resulting in offset from the track center. etc. will have an adverse effect.
本発明の目的は、ディスク回転停止動作時、ディスク回
転慣性でモータより発生する電圧を利用してキャリッジ
リトラクトを行なう磁気ディスク駆動装置を提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic disk drive device that performs carriage retraction using voltage generated by a motor due to inertia of disk rotation when the disk rotation is stopped.
本発明の特徴とするところは、ディスク回転停止動作時
、ディスク回転慣性でモータより発生する電圧を利用し
てキャリッジリトラクトを行なうものである。A feature of the present invention is that when the disk rotation is stopped, the carriage is retracted by using the voltage generated by the motor due to the inertia of the disk rotation.
以下、本発明の一実施例を第２図および第３図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.
第２図はディスクの回転慣性でキャリッジリトラクトを
行なう為の構成図である。第３図（ａ）乃至（ｄ）は各
巻線より発生する電圧を表わしたものである。FIG. 2 is a block diagram for performing carriage retraction using the rotational inertia of the disk. FIGS. 3(a) to 3(d) represent the voltages generated from each winding.
また、ディスク回転停止時、入力のリレー３は破線で記
す状態となり、モータ４はディスク回転慣性により、巻
線より各々Ｖｔ、Ｖ２．Ｖ３の電圧を発生し発電機の役
目を来たす。モータ４より発生するＶｌ、￥２．Ｖ３を
整流回路５により平滑し出力電圧■の電源を作り、ボイ
スコイルモータ６のコイル両端に印加することによりキ
ャリッジリトラクトを行なうものである。Furthermore, when the disk rotation is stopped, the input relay 3 is in the state indicated by the broken line, and the motor 4 is activated by the windings Vt, V2. Generates V3 voltage and acts as a generator. Vl generated by motor 4, ¥2. V3 is smoothed by a rectifier circuit 5 to create a power source with an output voltage of 2, which is applied to both ends of the coil of a voice coil motor 6 to perform carriage retraction.
本発明によれば、キャリッジにバネ等、付加物がない為
、通常動作時におけるヘッド位置決め制御に影響をおよ
ぼさ１よい。また従来よりあるモータの発電効果を活用
している為、簡単な回路で、通常電源がない状態で、キ
ヤＩＪ ツジリ゛トラクト動作を行うことができる。According to the present invention, since there is no additional material such as a spring on the carriage, there is no influence on head positioning control during normal operation. In addition, since it utilizes the power generation effect of conventional motors, it is possible to carry out the carrier IJ retract operation with a simple circuit even in the absence of a normal power source.
また、本発明の基本的な考え方、即ちディスクの慣性エ
ネルギーを、電気エネルギーに変換して他の動作に利用
できることは言うまでもない。Furthermore, it goes without saying that the basic idea of the present invention is that the inertial energy of the disk can be converted into electrical energy and used for other operations.
第１図は従来のキャリッジリトラクト構造を示す図、第
２図は本発明の一実施例であるディスク回転慣性による
キャリとシリトラクト方式の構成図、第３図（ａ）乃至
（ｄ）は第２のモータより発生する電圧波形図である。
符号の説明
１・・・キャリッジ本体 ２・・・スプリツタ３・・
・リレー ４・・・モータ５・・・整Ｒａ
６・・・ボイスコイルモア１第 ３ 冒
（ｄ）FIG. 1 is a diagram showing a conventional carriage retract structure, FIG. 2 is a configuration diagram of a carry and retract method using disc rotational inertia, which is an embodiment of the present invention, and FIGS. FIG. 3 is a diagram of voltage waveforms generated by the motor of FIG. Explanation of symbols 1... Carriage body 2... Splitter 3...
・Relay 4...Motor 5...Adjustment Ra
6...Voice coil more 1 3rd adventure (d)
Claims (1)
ィスク回転停止動作時、ディスク回転慣性エネルギーを
、嘔気工不ルキーに変換してキャリッジリトラクトを行
なうことを特徴とする磁気ディスク駆動装置。What is claimed is: 1. A magnetic disk drive device using a DC motor, which is characterized in that when the disk rotation is stopped, the disk rotational inertia energy is converted into vomiting energy to perform carriage retraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7286583A JPS59198574A (en) | 1983-04-27 | 1983-04-27 | Magnetic disc driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7286583A JPS59198574A (en) | 1983-04-27 | 1983-04-27 | Magnetic disc driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59198574A true JPS59198574A (en) | 1984-11-10 |
Family
ID=13501653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7286583A Pending JPS59198574A (en) | 1983-04-27 | 1983-04-27 | Magnetic disc driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59198574A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4831469A (en) * | 1987-07-29 | 1989-05-16 | International Business Machines Corporation | Disk drive head retract and motor braking method and apparatus |
-
1983
- 1983-04-27 JP JP7286583A patent/JPS59198574A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4831469A (en) * | 1987-07-29 | 1989-05-16 | International Business Machines Corporation | Disk drive head retract and motor braking method and apparatus |
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