JPH0242255U - - Google Patents
Info
- Publication number
- JPH0242255U JPH0242255U JP12131988U JP12131988U JPH0242255U JP H0242255 U JPH0242255 U JP H0242255U JP 12131988 U JP12131988 U JP 12131988U JP 12131988 U JP12131988 U JP 12131988U JP H0242255 U JPH0242255 U JP H0242255U
- Authority
- JP
- Japan
- Prior art keywords
- spindle motor
- voltage value
- output
- outputting
- rotational speed
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Rotational Drive Of Disk (AREA)
Description
第１図は本考案の一実施例における起動時の信
号発生タイミングを示すタイミングチヤート、第
２図は同実施例の起動時のスピンドルモータに対
する電流変化を示す図、第３図は回転制御装置の
構成を示す図、第４図は従来の起動時のスピンド
ルモータに対する電流変化を示す図である。
１……スピンドルモータ、２……ＰＬＬ回路、
３……差動増幅器、４……トランジスタ、５……
電磁リレー、６……電流−電圧変換部、７……主
制御部。
FIG. 1 is a timing chart showing signal generation timing at startup in an embodiment of the present invention, FIG. 2 is a diagram showing current changes to the spindle motor at startup in the same embodiment, and FIG. 3 is a diagram of the rotation control device. FIG. 4, which is a diagram showing the configuration, is a diagram showing a change in current applied to the spindle motor at the time of starting the conventional motor. 1...Spindle motor, 2...PLL circuit,
3...Differential amplifier, 4...Transistor, 5...
Electromagnetic relay, 6... current-voltage conversion section, 7... main control section.
Claims (1)
このスピンドルモータに駆動電圧を印加する電磁
リレーと、 上記スピンドルモータに流れる電流を電圧値に
変換する変換手段と、 上記スピンドルモータの回転数に対応したパル
スと基準パルスの位相とを比較することにより、
スピンドルモータの回転数に追従した電圧値を出
力する出力手段と、 この出力手段により出力された電圧値と上記変
換手段により変換された電圧値との差に応じた電
流値で上記スピンドルモータを駆動する駆動手段
と、 動作開始時、上記電磁リレーにリレーオン信号
を出力し、この出力から所定時間経過後に上記出
力手段にスタート信号を出力する処理手段と、 を具備したことを特徴とする回転制御装置。[Claims for Utility Model Registration] A spindle motor that rotates a magnetic recording medium;
An electromagnetic relay that applies a drive voltage to the spindle motor, a conversion means that converts the current flowing through the spindle motor into a voltage value, and a pulse that corresponds to the rotational speed of the spindle motor and the phase of the reference pulse are compared. ,
output means for outputting a voltage value that follows the rotational speed of the spindle motor; and driving the spindle motor with a current value corresponding to the difference between the voltage value output by the output means and the voltage value converted by the conversion means. A rotation control device comprising: a drive means for outputting a relay-on signal to the electromagnetic relay at the start of operation, and a processing means for outputting a start signal to the output means after a predetermined period of time has elapsed from this output. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12131988U JPH0242255U (en) | 1988-09-16 | 1988-09-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12131988U JPH0242255U (en) | 1988-09-16 | 1988-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0242255U true JPH0242255U (en) | 1990-03-23 |
Family
ID=31368219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12131988U Pending JPH0242255U (en) | 1988-09-16 | 1988-09-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0242255U (en) |
-
1988
- 1988-09-16 JP JP12131988U patent/JPH0242255U/ja active Pending
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