JPH0412152U - - Google Patents
Info
- Publication number
- JPH0412152U JPH0412152U JP4884190U JP4884190U JPH0412152U JP H0412152 U JPH0412152 U JP H0412152U JP 4884190 U JP4884190 U JP 4884190U JP 4884190 U JP4884190 U JP 4884190U JP H0412152 U JPH0412152 U JP H0412152U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- detection means
- rotation speed
- rotational speed
- speed detection
- 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
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 3
- 230000007613 environmental effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Rotational Drive Of Disk (AREA)
Description
第１図は本考案を適用する光デイスク駆動装置
の全体ブロツク図、第２図はデイスク駆動用モー
タの一例を示す側面断面概要構成図、第３図ａ、
ｂ、ｃ夫々はモータ制御用信号を示す波形図、第
４図ａ、ｂは温度とモータ回転位相遅れとの関係
及び、温度とＰＬＬ電圧との関係を示す図、第５
図ａ、ｂはスピンドルモータコントロール部（モ
ータ制御部）の具体例を示す回路図である。
１……スピンドルモータ、２……スピンドルモ
ータ・コントロール部、３……電源ライン、４…
…コントロールボツクス、５……ＳＶＣＴＬ、２
１……モータ回転軸、２２……ホルダ、２３……
モータ基板、２４……ステータ、２５……コイル
、２６……ロータ、２７……マグネツト、２８…
…カバー、２９……ロータの水平周縁面、３０…
…反射センサ。
FIG. 1 is an overall block diagram of an optical disk drive device to which the present invention is applied, FIG. 2 is a schematic side cross-sectional configuration diagram showing an example of a disk drive motor, and FIGS.
Figures b and c are waveform diagrams showing motor control signals, Figures 4a and b are diagrams showing the relationship between temperature and motor rotation phase delay, and diagrams showing the relationship between temperature and PLL voltage.
Figures a and b are circuit diagrams showing specific examples of a spindle motor control section (motor control section). 1...Spindle motor, 2...Spindle motor control unit, 3...Power line, 4...
...Control box, 5...SVCTL, 2
1...Motor rotating shaft, 22...Holder, 23...
Motor board, 24... stator, 25... coil, 26... rotor, 27... magnet, 28...
... Cover, 29 ... Horizontal peripheral surface of rotor, 30 ...
...reflection sensor.
Claims (1)
ータの回転速度に応じた周波数の信号を発生する
回転速度検出手段を備え、且該回転速度検出手段
には前記信号と基準パルスとを比較して回転数が
所定値になるように前記モータの回転速度を制御
するＰＬＬ回路を有した光デイスク駆動装置等に
おいて、モータ駆動用パルスと前記回転速度検出
手段にて得た回転周波数信号との位相遅延量が環
境温度によつて変化することを利用して、当該環
境温度を検出したことを特徴とする光デイスク駆
動装置等の温度検出器。 A rotor attached to a rotating shaft of the motor and a rotation speed detection means for generating a signal of a frequency corresponding to the rotation speed of the rotor, and the rotation speed detection means compares the signal with a reference pulse to detect rotation. In an optical disk drive device or the like having a PLL circuit that controls the rotational speed of the motor so that the rotational speed of the motor becomes a predetermined value, the phase delay amount between the motor driving pulse and the rotational frequency signal obtained by the rotational speed detection means. 1. A temperature detector for an optical disk drive device, etc., which detects the environmental temperature by utilizing the fact that the temperature changes depending on the environmental temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4884190U JPH0412152U (en) | 1990-05-10 | 1990-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4884190U JPH0412152U (en) | 1990-05-10 | 1990-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0412152U true JPH0412152U (en) | 1992-01-31 |
Family
ID=31566012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4884190U Pending JPH0412152U (en) | 1990-05-10 | 1990-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412152U (en) |
-
1990
- 1990-05-10 JP JP4884190U patent/JPH0412152U/ja active Pending
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