JPS6132793U - Brushless motor drive circuit - Google Patents
Brushless motor drive circuitInfo
- Publication number
- JPS6132793U JPS6132793U JP1984116638U JP11663884U JPS6132793U JP S6132793 U JPS6132793 U JP S6132793U JP 1984116638 U JP1984116638 U JP 1984116638U JP 11663884 U JP11663884 U JP 11663884U JP S6132793 U JPS6132793 U JP S6132793U
- Authority
- JP
- Japan
- Prior art keywords
- back electromotive
- drive coil
- circuit
- brushless motor
- motor drive
- 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
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の実施例を示す回路図、第２図は同上実
施例の分圧合成回路部分の回路図、第３図は上記実施例
の各相の逆起電圧の関係を示す波形図、第４図は同じく
各相の逆起電圧と各分圧合成点における電圧の変化を示
す波形図である。
Ｌａ， Ｌｂ， Ｌｃ−−−駆動コイル、Ｒ７，Ｒ８．
Ｒ９，ＲＩＤ，Ｒｌｌ，Ｒ１２・・・分圧合成回路を構
成する抵抗、Ｃｍｌ，Ｃｍ２，Ｃｍ３・・・逆起電圧比
較回路、ｂ・・・論理回路。Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram of the voltage dividing and combining circuit portion of the above embodiment, and Fig. 3 is a waveform showing the relationship between the back electromotive force of each phase in the above embodiment. Similarly, FIG. 4 is a waveform diagram showing the back electromotive force of each phase and the change in voltage at each division voltage combination point. La, Lb, Lc---drive coil, R7, R8.
R9, RID, Rll, R12...Resistors forming a voltage dividing and combining circuit, Cml, Cm2, Cm3...Back electromotive force comparison circuit, b...Logic circuit.
Claims (1)
イミングを決めるようにした３相ブラシレスモータの駆
動回路において、上記駆動コイルのうち通電中の駆動コ
イル以外の二つの駆動コイルの逆起電圧を抵抗で分圧し
合成することによって通電中の駆動コイルの仮想逆起電
圧を得る分圧合成回路と、抵抗分圧された上記駆動コイ
ルの逆起電圧と上記仮想逆起電圧とを比較してパルス信
号を出力する逆起電圧比較回路と、この逆起電圧比較回
路からのパルス信号に基づいて上記駆動コイルへの通電
タイミングを決める論理回路とを有してなるブラシレス
モータの駆動回路。In a three-phase brushless motor drive circuit that detects the back electromotive force of the drive coil to determine the timing of energizing the drive coil, the back electromotive force of two drive coils other than the currently energized drive coil is detected. A voltage dividing/synthesizing circuit obtains a virtual back electromotive force of the energized drive coil by dividing and combining the voltages with resistors, and a comparison of the resistance-divided back electromotive voltage of the drive coil and the virtual back electromotive voltage. A brushless motor drive circuit comprising a back electromotive voltage comparison circuit that outputs a pulse signal, and a logic circuit that determines the timing of energization of the drive coil based on the pulse signal from the back electromotive voltage comparison circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984116638U JPS6132793U (en) | 1984-07-30 | 1984-07-30 | Brushless motor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984116638U JPS6132793U (en) | 1984-07-30 | 1984-07-30 | Brushless motor drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6132793U true JPS6132793U (en) | 1986-02-27 |
Family
ID=30675574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984116638U Pending JPS6132793U (en) | 1984-07-30 | 1984-07-30 | Brushless motor drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6132793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6402276B1 (en) * | 2018-05-28 | 2018-10-10 | 北斗制御株式会社 | Electric field position detection method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172994A (en) * | 1982-04-02 | 1983-10-11 | Sony Corp | Brushless motor |
-
1984
- 1984-07-30 JP JP1984116638U patent/JPS6132793U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172994A (en) * | 1982-04-02 | 1983-10-11 | Sony Corp | Brushless motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6402276B1 (en) * | 2018-05-28 | 2018-10-10 | 北斗制御株式会社 | Electric field position detection method |
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