JPH0164997U - - Google Patents
Info
- Publication number
- JPH0164997U JPH0164997U JP1987157721U JP15772187U JPH0164997U JP H0164997 U JPH0164997 U JP H0164997U JP 1987157721 U JP1987157721 U JP 1987157721U JP 15772187 U JP15772187 U JP 15772187U JP H0164997 U JPH0164997 U JP H0164997U
- Authority
- JP
- Japan
- Prior art keywords
- charging
- discharging
- comparator
- output
- phase
- 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
- 238000007599 discharging Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 2
- 230000005405 multipole Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図は本考案の一実施例としてのブラシレス
モータの電気回路図、第２図は同じくその正常回
転時の各部分の波形を示す説明図、第３図は同じ
く異常停止時の各部分の波形を示す説明図、第４
図は従来例としてのブラシレスモータの電気回路
図である。図において、２はホール素子、３は入
力アンプ、４は波形整形コンパレータ、５は相切
換回路、６，７は出力アンプ、８，９は固定子コ
イル、１１はウインドウ・コンパレータ、１２は
タイマ用コンデンサ、１３はタイマ用コンパレー
タ、１４は充放電回路である。なお、図中同一符
号は、同一又は相当部分を示す。
Fig. 1 is an electric circuit diagram of a brushless motor as an embodiment of the present invention, Fig. 2 is an explanatory diagram showing the waveforms of each part during normal rotation, and Fig. 3 is an illustration of the waveforms of each part during abnormal stop. Explanatory diagram showing waveforms, 4th
The figure is an electrical circuit diagram of a conventional brushless motor. In the figure, 2 is a Hall element, 3 is an input amplifier, 4 is a waveform shaping comparator, 5 is a phase switching circuit, 6 and 7 are output amplifiers, 8 and 9 are stator coils, 11 is a window comparator, and 12 is for a timer. 13 is a timer comparator, and 14 is a charging/discharging circuit. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
、この回転子を単相又は多相で駆動させる固定子
コイルと、上記回転子の磁極を検知する磁極検知
素子と、この磁極検知素子の出力を増幅する入力
アンプと、この入力アンプの出力を２値信号に波
形整形する波形整形コンパレータと、この波形整
形コンパレータの出力によつて駆動する相を切り
換える相切換回路と、この相切換回路により駆動
され、上記固定子コイルへ通電する出力アンプと
、タイマ用のコンデンサと、上記相切換回路から
電源を供給され、上記入力アンプの出力が中間電
位にある時を検知して上記コンデンサを放電させ
るウインドウ・コンパレータと、上記コンデンサ
を徐々に充電及び放電させる充放電回路と、上記
コンデンサの電圧とヒステリシスのある比較電圧
とを比較し、２つの時間を形成して上記充放電回
路の充放電を切換えるとともに、上記相切換回路
及び上記ウインドウ・コンパレータの動作の実行
・停止を切換えるタイマ用コンパレータとを具備
してなるブラシレスモータ。 (2) 充放電回路が、定電流源を切換えることに
よつて充電及び放電電流を作る構成で、かつ充電
電流が放電電流より大きくなるように設定されて
いることを特徴とする実用新案登録請求の範囲第
１項記載のブラシレスモータ。[Claims for Utility Model Registration] (1) A rotor having multi-pole magnetized permanent magnets, a stator coil that drives this rotor in single phase or multi-phase, and detecting the magnetic poles of the rotor. A magnetic pole detection element, an input amplifier that amplifies the output of this magnetic pole detection element, a waveform shaping comparator that shapes the output of this input amplifier into a binary signal, and a phase to be driven is switched by the output of this waveform shaping comparator. A phase switching circuit, an output amplifier that is driven by this phase switching circuit and energizes the stator coil, a timer capacitor, and is supplied with power from the phase switching circuit, and the output of the input amplifier is at an intermediate potential. A window comparator detects the time and discharges the capacitor, a charging/discharging circuit gradually charges and discharges the capacitor, and compares the voltage of the capacitor with a comparison voltage with hysteresis to form two times. A brushless motor comprising: a timer comparator that switches charging and discharging of the charging and discharging circuit, and a timer comparator that switches execution/stop of the operation of the phase switching circuit and the window comparator. (2) A request for utility model registration characterized in that the charging/discharging circuit is configured to generate charging and discharging currents by switching constant current sources, and the charging current is set to be larger than the discharging current. The brushless motor according to the range 1 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987157721U JPH0164997U (en) | 1987-10-15 | 1987-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987157721U JPH0164997U (en) | 1987-10-15 | 1987-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0164997U true JPH0164997U (en) | 1989-04-26 |
Family
ID=31437414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987157721U Pending JPH0164997U (en) | 1987-10-15 | 1987-10-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0164997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555798U (en) * | 1991-12-20 | 1993-07-23 | 松下電器産業株式会社 | Coil burnout prevention device for brushless motor with speed control |
-
1987
- 1987-10-15 JP JP1987157721U patent/JPH0164997U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555798U (en) * | 1991-12-20 | 1993-07-23 | 松下電器産業株式会社 | Coil burnout prevention device for brushless motor with speed control |
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