JPH0297896U - - Google Patents
Info
- Publication number
- JPH0297896U JPH0297896U JP1989003361U JP336189U JPH0297896U JP H0297896 U JPH0297896 U JP H0297896U JP 1989003361 U JP1989003361 U JP 1989003361U JP 336189 U JP336189 U JP 336189U JP H0297896 U JPH0297896 U JP H0297896U
- Authority
- JP
- Japan
- Prior art keywords
- pulse signal
- phase
- rotor
- pulse
- stator coils
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は、本考案の実施例に係るブラシレスモ
ータの騒音低減装置を示す回路図、第２図は、前
記実施例の作用を説明するための、各部波形の齢
を示す線図、第３図は、一般的なブラシレスモー
タの構成を示す回路図、第４図は、従来のブラシ
レスモータの駆動パルス回転位置信号の例を示す
線図である。
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、５……オーバラ
ツプパルス形成部、６……オア回路、８……微分
回路、９……シユミツトトリガ回路、ＴｒＡ，Ｔ
ｒＢ，ＴｒＣ……パワートランジスタ。
FIG. 1 is a circuit diagram showing a noise reduction device for a brushless motor according to an embodiment of the present invention, FIG. The figure is a circuit diagram showing the configuration of a general brushless motor, and FIG. 4 is a diagram showing an example of a drive pulse rotation position signal of a conventional brushless motor. 1A, 1B, 1C...Stator coil, 2...
Rotor, 3A, 3B, 3C...Power circuit, 4A,
4B, 4C... Rotational position detector, 5... Overlap pulse forming section, 6... OR circuit, 8... Differential circuit, 9... Schmitt trigger circuit, TrA, T
rB, TrC...Power transistor.
Claims (1)
該ステータコイル１Ａ，１Ｂ，１Ｃにより駆動さ
れるロータ２と、各相ステータコイル１Ａ，１Ｂ
，１Ｃに第１のパルス信号に基づき電源を供給す
る各相の電源回路３Ａ，３Ｂ，３Ｃと、該第１の
パルス信号を各相の電源回路３Ａ，３Ｂ，３Ｃに
入力して各相のステータコイル１Ａ，１Ｂ，１Ｃ
を順次励磁し、前記ロータ２を回転させる手段と
を有するブラシレスモータにおいて、前記ロータ
２の回転位置を検出するための回転位置検出器４
Ａ，４Ｂ，４Ｃと、検出回路位置信号に基づき、
前記第１のパルス信号に同期しかつ前記第１のパ
ルス信号のオン状態が終了した後に所定時間オン
状態の第２のパルス信号を形成するための第２パ
ルス形成手段５と、前記第１のパルス信号と第２
のパルス信号の和を前記電源回路３Ａ，３Ｂ，３
Ｃに入力して、所定相のスタータコイルへの電源
の供給時期を次相のステータコイルへの電源の供
給時期にオーバーラツプさせるための手段６とを
備えたことを特徴とするブラシレスモータの騒音
低減装置。 Multi-phase stator coils 1A, 1B, 1C,
A rotor 2 driven by the stator coils 1A, 1B, 1C, and stator coils 1A, 1B of each phase.
, 1C based on the first pulse signal, and input the first pulse signal to the power supply circuits 3A, 3B, 3C of each phase to Stator coil 1A, 1B, 1C
a rotational position detector 4 for detecting the rotational position of the rotor 2 in a brushless motor having means for sequentially exciting the rotor 2 and rotating the rotor 2;
Based on A, 4B, 4C and the detection circuit position signal,
a second pulse forming means 5 for forming a second pulse signal in synchronization with the first pulse signal and in an on state for a predetermined time after the on state of the first pulse signal ends; Pulse signal and second
The sum of the pulse signals of the power supply circuits 3A, 3B, 3
Noise reduction of a brushless motor, characterized in that it is provided with a means 6 for inputting the power to the starter coil of a predetermined phase into overlap with the time of supplying power to the stator coil of the next phase. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989003361U JPH0297896U (en) | 1989-01-13 | 1989-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989003361U JPH0297896U (en) | 1989-01-13 | 1989-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0297896U true JPH0297896U (en) | 1990-08-03 |
Family
ID=31204929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989003361U Pending JPH0297896U (en) | 1989-01-13 | 1989-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0297896U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123790A (en) * | 1980-02-29 | 1981-09-29 | Sony Corp | Driving circuit for two phase |
| JPS5727794B2 (en) * | 1979-02-05 | 1982-06-12 | ||
| JPS62171489A (en) * | 1986-01-21 | 1987-07-28 | Sanyo Electric Co Ltd | Brushless motor driving controller |
-
1989
- 1989-01-13 JP JP1989003361U patent/JPH0297896U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727794B2 (en) * | 1979-02-05 | 1982-06-12 | ||
| JPS56123790A (en) * | 1980-02-29 | 1981-09-29 | Sony Corp | Driving circuit for two phase |
| JPS62171489A (en) * | 1986-01-21 | 1987-07-28 | Sanyo Electric Co Ltd | Brushless motor driving controller |
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