JPS63176368U - - Google Patents
Info
- Publication number
- JPS63176368U JPS63176368U JP1987065549U JP6554987U JPS63176368U JP S63176368 U JPS63176368 U JP S63176368U JP 1987065549 U JP1987065549 U JP 1987065549U JP 6554987 U JP6554987 U JP 6554987U JP S63176368 U JPS63176368 U JP S63176368U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- motor
- current flowing
- detection element
- 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 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000005405 multipole Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図は本考案による速度制御装置のブロツク
図、第２図はブラシレスモータの原理を説明する
ためにローターと界磁コイルとの関係を示した図
、第３図はホール素子の出力電圧及び界磁コイル
に流れる電流波形を示した図、第４図はＤＣブラ
シレスモータのローターマグネツトを示した図、
第５図はＦＧコイルを示した図。
図中、１は速度制御装置、ＲＭはローターマグ
ネツト、Ｃ１〜Ｃ３，Ｃ１′〜Ｃ３′は界磁コイ
ル。
Fig. 1 is a block diagram of the speed control device according to the present invention, Fig. 2 is a diagram showing the relationship between the rotor and the field coil to explain the principle of a brushless motor, and Fig. 3 is a diagram showing the output voltage and voltage of the Hall element. Figure 4 shows the current waveform flowing through the field coil. Figure 4 shows the rotor magnet of a DC brushless motor.
FIG. 5 is a diagram showing the FG coil. In the figure, 1 is a speed control device, RM is a rotor magnet, and C 1 to C 3 and C 1 ' to C 3 ' are field coils.
Claims (1)
を磁気検出素子により検出し、該磁気検出素子の
出力により複数組の界磁コイルに流れる電流を切
換えてモータの回転駆動力を発生させるＤＣブラ
シレスモータにおいて、前記複数組の界磁コイル
のうち少なくとも１組の界磁コイルに印加される
電圧から回転速度に対応する周波数の回転速度検
出信号を取り出す回路と、この回路の出力を周波
数に対応した直流電圧に変換する回路と、該変換
回路の直流直圧とあらかじめ設定した基準電圧と
を比較する回路と、該比較回路の差電圧に対応し
て界磁コイルに流れる電流を制御してモータの回
転数を一定に制御する回路とを含む速度制御装置
を備えたことを特徴とするＤＣブラシレスモータ
。 A DC brushless motor that detects the rotational position of a multi-pole magnetized rotor magnet using a magnetic detection element, and uses the output of the magnetic detection element to switch the current flowing through multiple sets of field coils to generate rotational driving force for the motor. a circuit for extracting a rotational speed detection signal having a frequency corresponding to the rotational speed from a voltage applied to at least one field coil among the plurality of field coils; A circuit that converts the DC voltage into a voltage, a circuit that compares the direct current voltage of the conversion circuit with a preset reference voltage, and a circuit that controls the current flowing through the field coil in response to the voltage difference between the comparison circuit and rotates the motor. A DC brushless motor, characterized in that it is equipped with a speed control device including a circuit for controlling the number of motors to a constant value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987065549U JPS63176368U (en) | 1987-04-30 | 1987-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987065549U JPS63176368U (en) | 1987-04-30 | 1987-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63176368U true JPS63176368U (en) | 1988-11-15 |
Family
ID=30902726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987065549U Pending JPS63176368U (en) | 1987-04-30 | 1987-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63176368U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925413A (en) * | 1972-06-30 | 1974-03-06 | ||
| JPS5167907A (en) * | 1974-12-10 | 1976-06-12 | Matsushita Electric Ind Co Ltd |
-
1987
- 1987-04-30 JP JP1987065549U patent/JPS63176368U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4925413A (en) * | 1972-06-30 | 1974-03-06 | ||
| JPS5167907A (en) * | 1974-12-10 | 1976-06-12 | Matsushita Electric Ind Co Ltd |
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