JPS5878796U - Brushless motor drive circuit - Google Patents
Brushless motor drive circuitInfo
- Publication number
- JPS5878796U JPS5878796U JP1981172965U JP17296581U JPS5878796U JP S5878796 U JPS5878796 U JP S5878796U JP 1981172965 U JP1981172965 U JP 1981172965U JP 17296581 U JP17296581 U JP 17296581U JP S5878796 U JPS5878796 U JP S5878796U
- Authority
- JP
- Japan
- Prior art keywords
- drive circuit
- motor drive
- brushless motor
- resistor
- stator coil
- 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図は周波数発電機を用いた従来のブラシレスモータ
駆動回路における回転速度制御系を示すブロック図、第
２図はステータコイルの逆起電圧に基いて回転速度を制
御するようにした従来のブラシレスモータ駆動回路にお
ける回転速度制御系のブロック図である。第３図〜第８
図は本考案の第１の実施例を示すものであって、第３図
は２相正弦疲駆動ブラシレスモークの縦断面図、第４図
はロータマグネットの平面図、第５図はステータの平面
図、第６図はブラシレスモータ駆動回路の回路図、第７
図は第６図に示すＡ相のステータコイルの駆動回路に関
する等個目略図、第８図はロータの回転角速度と負荷ト
ルクとの関係を示す特性図、第９図は本考案の第２の実
施例を示すものであって、Ａ相のステータコイルの駆動
回路を示す回路図である。
なお図面に用いられている符号において、１０・・・・
・弓−タ、１８・・・・・・演算増幅器、Ｈ，、Ｒ２・
・・・・・ホー／Ｌ’素子、Ｌｌ、 Ｒ２・・曲ステー
タコイル、Ｒ１゜Ｒ２，Ｒ３，Ｒ４・・・・・・抵抗、
Ｒｓ・・・・・・逆起電圧検出用抵抗である。Figure 1 is a block diagram showing the rotational speed control system in a conventional brushless motor drive circuit using a frequency generator, and Figure 2 is a conventional brushless motor drive circuit in which the rotational speed is controlled based on the back electromotive force of the stator coil. FIG. 2 is a block diagram of a rotational speed control system in a motor drive circuit. Figures 3 to 8
The figures show the first embodiment of the present invention, in which Fig. 3 is a longitudinal cross-sectional view of a two-phase sinusoidal fatigue drive brushless smoke, Fig. 4 is a plan view of the rotor magnet, and Fig. 5 is a plan view of the stator. Figure 6 is a circuit diagram of the brushless motor drive circuit, Figure 7 is a circuit diagram of the brushless motor drive circuit.
The figure is a schematic diagram of the A-phase stator coil drive circuit shown in Figure 6, Figure 8 is a characteristic diagram showing the relationship between the rotational angular velocity of the rotor and the load torque, and Figure 9 is the second diagram of the present invention. FIG. 2 is a circuit diagram illustrating an A-phase stator coil drive circuit according to an embodiment. In addition, in the symbols used in the drawings, 10...
・Butter, 18...Operation amplifier, H,, R2・
...Ho/L' element, Ll, R2...Curved stator coil, R1゜R2, R3, R4...Resistance,
Rs...Resistance for detecting back electromotive voltage.
Claims (1)
算増幅器を具備する増幅回路にて増幅してステータコイ
ルに印加するようにしたブラシレスモータ駆動回路にお
いて、前記演算増幅器の反転入力端子と前記磁電変換素
子の出力端子との間に第１の抵抗を接続し、前記増幅回
路の出力端子と前記演算増幅器の反転入力端子との間に
第２の抵抗を接続し、前記ステータコイルに第３の抵抗
を直列に接続すると共に前記ステータコイルと前記第３
の抵抗との接続点を前記演算増幅器の非反転入力嫡子に
接続したことを特徴とするブラシレスモータ駆動回路。In a brushless motor drive circuit, the output of a magnetoelectric transducer that detects the rotational position of a rotor is amplified by an amplifier circuit equipped with an operational amplifier and applied to a stator coil. A first resistor is connected between the output terminal of the conversion element, a second resistor is connected between the output terminal of the amplifier circuit and the inverting input terminal of the operational amplifier, and a third resistor is connected to the stator coil. A resistor is connected in series, and the stator coil and the third
A brushless motor drive circuit characterized in that a connection point with a resistor is connected to a non-inverting input heir of the operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981172965U JPS5878796U (en) | 1981-11-20 | 1981-11-20 | Brushless motor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981172965U JPS5878796U (en) | 1981-11-20 | 1981-11-20 | Brushless motor drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5878796U true JPS5878796U (en) | 1983-05-27 |
Family
ID=29964839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981172965U Pending JPS5878796U (en) | 1981-11-20 | 1981-11-20 | Brushless motor drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5878796U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540649B2 (en) * | 1977-05-09 | 1980-10-20 |
-
1981
- 1981-11-20 JP JP1981172965U patent/JPS5878796U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540649B2 (en) * | 1977-05-09 | 1980-10-20 |
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