JPS6456031U - - Google Patents
Info
- Publication number
- JPS6456031U JPS6456031U JP15184987U JP15184987U JPS6456031U JP S6456031 U JPS6456031 U JP S6456031U JP 15184987 U JP15184987 U JP 15184987U JP 15184987 U JP15184987 U JP 15184987U JP S6456031 U JPS6456031 U JP S6456031U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- motor drive
- drive circuit
- circuit
- signal
- 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
- 239000002131 composite material Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案に係る磁気記録再生装置におけ
るドラムモータのサーボ系を示す回路図、第２図
は従来例を示すブロツク図である。
Ａ……モータサーボ回路、Ｂ……安全補償回路
、１……サーボ制御回路、２７……ローパスフイ
ルタ、２８，２９……コンパレータ、３０……時
定数設定回路、３１……出力回路。
FIG. 1 is a circuit diagram showing a servo system of a drum motor in a magnetic recording/reproducing apparatus according to the present invention, and FIG. 2 is a block diagram showing a conventional example. A... Motor servo circuit, B... Safety compensation circuit, 1... Servo control circuit, 27... Low pass filter, 28, 29... Comparator, 30... Time constant setting circuit, 31... Output circuit.
Claims (1)
を比較信号として予め決めた基準信号との間で作
成される速度誤差信号と位相誤差信号を合成し、
該合成誤差信号をローパスフイルタ回路を介して
モータドライブ回路に加えて速度制御と位相制御
を行うモータサーボ回路を備えた磁気記録再生装
置において、前記モータのドライブ電流を検出し
、該検出出力を前記ローパスフイルタ回路を介し
てモータドライブ回路に負帰還する手段と、前記
検出出力を所定のレベルと比較し、比較結果によ
つて前記モータドライブ回路の動作を停止制御す
る手段を具備したことを特徴とする磁気記録再生
装置の安全補償回路。 Detecting the rotational speed and phase of the motor, and combining the detected signal with a predetermined reference signal as a comparison signal into a speed error signal and a phase error signal,
In a magnetic recording/reproducing device equipped with a motor servo circuit that applies the composite error signal to a motor drive circuit via a low-pass filter circuit to perform speed control and phase control, the drive current of the motor is detected, and the detected output is transmitted to the motor drive circuit. The present invention is characterized by comprising means for providing negative feedback to the motor drive circuit via a low-pass filter circuit, and means for comparing the detection output with a predetermined level and controlling the operation of the motor drive circuit to be stopped based on the comparison result. Safety compensation circuit for magnetic recording and reproducing devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15184987U JPS6456031U (en) | 1987-10-02 | 1987-10-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15184987U JPS6456031U (en) | 1987-10-02 | 1987-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456031U true JPS6456031U (en) | 1989-04-06 |
Family
ID=31426253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15184987U Pending JPS6456031U (en) | 1987-10-02 | 1987-10-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456031U (en) |
-
1987
- 1987-10-02 JP JP15184987U patent/JPS6456031U/ja active Pending
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