JPS6450787A - Brushless motor - Google Patents
Brushless motorInfo
- Publication number
- JPS6450787A JPS6450787A JP62206013A JP20601387A JPS6450787A JP S6450787 A JPS6450787 A JP S6450787A JP 62206013 A JP62206013 A JP 62206013A JP 20601387 A JP20601387 A JP 20601387A JP S6450787 A JPS6450787 A JP S6450787A
- Authority
- JP
- Japan
- Prior art keywords
- induced voltage
- circuit
- signals
- combining
- voltage
- 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
PURPOSE:To smooth the starting acceleration of a motor, by arranging a rotor position detecting means, an induced voltage detecting means, and a combining means. CONSTITUTION:A brushless motor is provided with a Hall element 7 for directing the output of voltage according to a driving magnet 6 for detecting the position of a rotor, and a controller is composed so that current flowing to a driving coil 8 according to the output voltage of the element 7 may be switched by a driving circuit 9, and so that a continuous rotational force may be generated. A combining circuit 21 for combining the FG signals with each other and for feeding the signals to a speed controlling circuit 11 is composed of the amplifier A1 of the output signal of the Hall element 7, the amplifier A2 of the induced voltage of the driving coil 8, and a flipflop circuit FF. Then, the FF is set by any rise edge of shaping induced voltage rising in a ringing state, and is retained. At this result, also at the time of a low-speed rotation with turbulent induced voltage, the frequency of the FG signals is exactly in proportion to rotational frequency, and smooth starting acceleration characteristic is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206013A JPS6450787A (en) | 1987-08-19 | 1987-08-19 | Brushless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206013A JPS6450787A (en) | 1987-08-19 | 1987-08-19 | Brushless motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6450787A true JPS6450787A (en) | 1989-02-27 |
Family
ID=16516462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62206013A Pending JPS6450787A (en) | 1987-08-19 | 1987-08-19 | Brushless motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6450787A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0454499U (en) * | 1990-09-11 | 1992-05-11 | ||
WO2010023538A2 (en) * | 2008-08-28 | 2010-03-04 | Melexis Nv | Improvements of accuracy of rotor position detection relating to the control of brushless dc motors |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180491A (en) * | 1984-02-24 | 1985-09-14 | Matsushita Electric Ind Co Ltd | Drive device for motor |
-
1987
- 1987-08-19 JP JP62206013A patent/JPS6450787A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180491A (en) * | 1984-02-24 | 1985-09-14 | Matsushita Electric Ind Co Ltd | Drive device for motor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0454499U (en) * | 1990-09-11 | 1992-05-11 | ||
WO2010023538A2 (en) * | 2008-08-28 | 2010-03-04 | Melexis Nv | Improvements of accuracy of rotor position detection relating to the control of brushless dc motors |
WO2010023538A3 (en) * | 2008-08-28 | 2010-04-22 | Melexis Nv | Improvements of accuracy of rotor position detection relating to the control of brushless dc motors |
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