JPH02103797U - - Google Patents
Info
- Publication number
- JPH02103797U JPH02103797U JP706489U JP706489U JPH02103797U JP H02103797 U JPH02103797 U JP H02103797U JP 706489 U JP706489 U JP 706489U JP 706489 U JP706489 U JP 706489U JP H02103797 U JPH02103797 U JP H02103797U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- drive circuit
- brushless motor
- rotor
- signal
- 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
- 230000010363 phase shift Effects 0.000 claims 2
- 239000000696 magnetic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
は本考案の実施例においてその進相回路部分の作
用を説明するブロツク図とその進相角度−進相指
令電圧特性図、第３図はセンサ信号の位相角を電
気的に操作してトルクコントロールされる従来の
ブラシレスモータとその駆動回路を示すブロツク
図、第４図はセンサ信号の位相角を制御する従来
の進相回路のブロツク図、第５図はその特性図、
第６図は従来の進相回路を用いたブラシレスモー
タにおいてその進相係数を変化させた時のトルク
の変化を実測したデータを示す図である。
２……回転子、３ａ，３ｂ，３ｃ……３相コイ
ル、４……非接触センサ、７……３相正弦波駆動
回路、１４，１６……進相回路、１５……アンプ
、１７……可変利得型アンプ。
Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a block diagram explaining the operation of the phase advance circuit portion in the embodiment of the present invention, and its phase advance angle-phase advance command voltage characteristic diagram. Figure 3 is a block diagram showing a conventional brushless motor whose torque is controlled by electrically manipulating the phase angle of the sensor signal and its drive circuit, and Figure 4 shows a conventional phase advance circuit that controls the phase angle of the sensor signal. Block diagram, Figure 5 is its characteristic diagram,
FIG. 6 is a diagram showing data obtained by actually measuring the change in torque when the phase advance coefficient is changed in a brushless motor using a conventional phase advance circuit. 2... Rotor, 3a, 3b, 3c... 3-phase coil, 4... Non-contact sensor, 7... 3-phase sine wave drive circuit, 14, 16... Phase advancing circuit, 15... Amplifier, 17... ...Variable gain amplifier.
Claims (1)
子と空〓を介して対向する固定子コアに少なくと
も複数個のコイルを備えた固定子と、前記固定子
に装着され、前記回転子の位置の変化を検出しこ
れを電気信号に変換し、互いに位相の異なる略正
弦波状の位置信号を出力する非接触センサを備え
たブラシレスモータに於いて、前記位置信号の位
相は前記コイルに誘起される逆起電力波形の位相
と電気的に９０゜の位相差を有することを基準と
し、前記９０゜の基準の位相差から指令信号に応
じて、前記位置信号の位相を電気的に操作ならし
める移相手段を有する駆動回路を備え、前記指令
信号を利得固定又は、可変可能なアンプを介して
前記移相手段に入力するブラシレスモータの駆動
回路。 a rotor made of a magnetic material or a magnet; a stator having at least a plurality of coils in a stator core that faces the rotor through the air; In a brushless motor equipped with a non-contact sensor that detects a change, converts it into an electrical signal, and outputs substantially sinusoidal position signals with mutually different phases, the phase of the position signal is opposite to that induced in the coil. A phase shift that electrically operates the phase of the position signal based on a reference phase difference of 90 degrees from the phase of the electromotive force waveform in accordance with a command signal. A drive circuit for a brushless motor, comprising a drive circuit having a means for inputting the command signal to the phase shift means via an amplifier with a fixed gain or a variable gain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP706489U JPH02103797U (en) | 1989-01-25 | 1989-01-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP706489U JPH02103797U (en) | 1989-01-25 | 1989-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02103797U true JPH02103797U (en) | 1990-08-17 |
Family
ID=31211763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP706489U Pending JPH02103797U (en) | 1989-01-25 | 1989-01-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02103797U (en) |
-
1989
- 1989-01-25 JP JP706489U patent/JPH02103797U/ja active Pending
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