JPS6450787A - Brushless motor - Google Patents

Brushless motor

Info

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
Application number
JP62206013A
Other languages
Japanese (ja)
Inventor
Hiroshi Iwai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP62206013A priority Critical patent/JPS6450787A/en
Publication of JPS6450787A publication Critical patent/JPS6450787A/en
Pending legal-status Critical Current

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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.
JP62206013A 1987-08-19 1987-08-19 Brushless motor Pending JPS6450787A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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