JPH02142996U - - Google Patents
Info
- Publication number
- JPH02142996U JPH02142996U JP1989052802U JP5280289U JPH02142996U JP H02142996 U JPH02142996 U JP H02142996U JP 1989052802 U JP1989052802 U JP 1989052802U JP 5280289 U JP5280289 U JP 5280289U JP H02142996 U JPH02142996 U JP H02142996U
- Authority
- JP
- Japan
- Prior art keywords
- rotational position
- pulse signal
- pulse
- rotor
- excitation
- 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
- 230000005284 excitation Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図は、本考案に係るブラシレスモータの騒
音低減装置の構成図、第２図は、第１図に示した
装置から出力される各部のパルスを示すタイムチ
ヤート、第３図〜第６図は、従来のブラシレスモ
ータ制御の説明図である。
１Ａ，１Ｂ，１Ｃ…ステータコイル、２…ロー
タ、３Ａ，３Ｂ，３Ｃ…電源回路、４Ａ，４Ｂ，
４Ｃ…回転位置検出器、１０…制御用ＩＣ、２０
…パルス出力手段、２１…駆動手段、ＴＡ，Ｔｒ
Ｂ，ＴｒＣ…パワートランジスタ。
Fig. 1 is a block diagram of a brushless motor noise reduction device according to the present invention, Fig. 2 is a time chart showing pulses of each part output from the device shown in Fig. 1, and Figs. 3 to 6. FIG. 1 is an explanatory diagram of conventional brushless motor control. 1A, 1B, 1C...Stator coil, 2...Rotor, 3A, 3B, 3C...Power supply circuit, 4A, 4B,
4C...Rotational position detector, 10...Control IC, 20
...Pulse output means, 21...Drive means, TA, Tr
B, TrC...power transistor.
Claims (1)
動される２と、 当該ロータ２の回転位置を検出する回転位置検
出器４Ａ，４Ｂ，４Ｃと， 当該回転位置検出器４Ａ，４Ｂ，４Ｃによつて
検出された前記ロータ２の回転位置に基づいて発
生する第１のパルス信号に同期し、かつこの第１
のパルス信号のオン状態の終了と同時に引き続き
一定時間オン状態の第２のパルス信号を出力する
パルス出力手段２０と、 当該パルス出力手段２０から出力されたパルス
信号に基づいて所定相のステータコイルの励磁時
期を次相のステータコイルへの励磁時間にオーバ
ーラツプさせた高周波励磁パルスを出力する駆動
手段２１とを有することを特徴とするブラシレス
モータの騒音低減装置。[Claims for Utility Model Registration] Multi-phase stator coils 1A, 1B, and 1C, 2 driven by the stator coils 1A, 1B, and 1C, and a rotational position detector 4A that detects the rotational position of the rotor 2. 4B, 4C, and a first pulse signal generated based on the rotational position of the rotor 2 detected by the rotational position detectors 4A, 4B, 4C, and
a pulse output means 20 that outputs a second pulse signal that remains on for a certain period of time simultaneously with the end of the on state of the pulse signal; and a stator coil of a predetermined phase based on the pulse signal output from the pulse output means 20. 1. A noise reduction device for a brushless motor, comprising a drive means 21 for outputting a high-frequency excitation pulse whose excitation timing overlaps with the excitation time for the next phase stator coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052802U JPH02142996U (en) | 1989-05-08 | 1989-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052802U JPH02142996U (en) | 1989-05-08 | 1989-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02142996U true JPH02142996U (en) | 1990-12-04 |
Family
ID=31573421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989052802U Pending JPH02142996U (en) | 1989-05-08 | 1989-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02142996U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63316689A (en) * | 1987-06-19 | 1988-12-23 | Fujitsu General Ltd | Brushless dc motor |
-
1989
- 1989-05-08 JP JP1989052802U patent/JPH02142996U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63316689A (en) * | 1987-06-19 | 1988-12-23 | Fujitsu General Ltd | Brushless dc motor |
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