JPS54125418A - Dc motor - Google Patents

Dc motor

Info

Publication number
JPS54125418A
JPS54125418A JP3386178A JP3386178A JPS54125418A JP S54125418 A JPS54125418 A JP S54125418A JP 3386178 A JP3386178 A JP 3386178A JP 3386178 A JP3386178 A JP 3386178A JP S54125418 A JPS54125418 A JP S54125418A
Authority
JP
Japan
Prior art keywords
phase
speed rotation
current
phase coil
low speed
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
JP3386178A
Other languages
Japanese (ja)
Inventor
Makoto Goto
Kazuo Arai
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3386178A priority Critical patent/JPS54125418A/en
Publication of JPS54125418A publication Critical patent/JPS54125418A/en
Pending legal-status Critical Current

Links

Landscapes

  • Brushless Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE: To improve the effect at low speed rotation by providing the first and second control means to control the current flow-in and -out of a multi-phase coil and switching a driving system using the current route switching means of the neutral point of the multi-phase coil and the DC power supply.
CONSTITUTION: The position detecting rotor 5 is mounted around the shaft of the rotor 1 on which a field magnet with a number of poles is magnetized. The phase DC voltage corresponding to the rotary position of the three-phase driving coils X, Y, and Z detected by this rotor 5 is individually applied to the bases of the transistors (Tr) Q1 to Q6. At low speed rotation, in the first flow-in current control circuit the largest potential phase Tr of the base voltage and in the second flow-out current control circuit the smallest potential phase Tr are most activated and switched according to the change of the base voltage. At low speed rotation, TrQ13 turns off and the neutral point potential of the neutral coil in the three-phase coil keeps constant, thus always supplying current to the two-phase coil. At high speed rotation, TrQ13 fully turns on and TrQ10 to Q14 turn off, thus supplying current to the one-phase coil.
COPYRIGHT: (C)1979,JPO&Japio
JP3386178A 1978-03-23 1978-03-23 Dc motor Pending JPS54125418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3386178A JPS54125418A (en) 1978-03-23 1978-03-23 Dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3386178A JPS54125418A (en) 1978-03-23 1978-03-23 Dc motor

Publications (1)

Publication Number Publication Date
JPS54125418A true JPS54125418A (en) 1979-09-28

Family

ID=12398276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3386178A Pending JPS54125418A (en) 1978-03-23 1978-03-23 Dc motor

Country Status (1)

Country Link
JP (1) JPS54125418A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121395A (en) * 1980-02-25 1981-09-24 Sony Corp Driving circuit of dc motor
JPS5893487A (en) * 1981-11-27 1983-06-03 Matsushita Electric Ind Co Ltd Brushless dc motor
JPS5893486A (en) * 1981-11-27 1983-06-03 Matsushita Electric Ind Co Ltd Brushless dc motor
JPS58198187A (en) * 1982-05-13 1983-11-18 Matsushita Electric Ind Co Ltd Motor
US4535276A (en) * 1983-01-12 1985-08-13 Matsushita Electric Industrial Co., Ltd. Output circuit and brushless motor using the same
JPS60129897U (en) * 1984-02-08 1985-08-31 三洋電機株式会社 Capstan motor drive circuit
JPS6169387A (en) * 1984-09-11 1986-04-09 Nippon Kogaku Kk <Nikon> Drive circuit of 3-phase brushless dc motor
JPS62281701A (en) * 1986-05-29 1987-12-07 Tokyo R & D:Kk Speed control unit for electric rolling stock
JP2006238634A (en) * 2005-02-25 2006-09-07 Nsk Ltd Brushless motor and electric power steering device using it
JP2015211549A (en) * 2014-04-25 2015-11-24 三菱電機株式会社 Motor generator

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56121395A (en) * 1980-02-25 1981-09-24 Sony Corp Driving circuit of dc motor
JPH0243437B2 (en) * 1981-11-27 1990-09-28
JPS5893487A (en) * 1981-11-27 1983-06-03 Matsushita Electric Ind Co Ltd Brushless dc motor
JPS5893486A (en) * 1981-11-27 1983-06-03 Matsushita Electric Ind Co Ltd Brushless dc motor
JPH0243438B2 (en) * 1981-11-27 1990-09-28
JPS58198187A (en) * 1982-05-13 1983-11-18 Matsushita Electric Ind Co Ltd Motor
JPH036750B2 (en) * 1982-05-13 1991-01-30 Matsushita Electric Ind Co Ltd
US4535276A (en) * 1983-01-12 1985-08-13 Matsushita Electric Industrial Co., Ltd. Output circuit and brushless motor using the same
JPS60129897U (en) * 1984-02-08 1985-08-31 三洋電機株式会社 Capstan motor drive circuit
JPS6169387A (en) * 1984-09-11 1986-04-09 Nippon Kogaku Kk <Nikon> Drive circuit of 3-phase brushless dc motor
JPS62281701A (en) * 1986-05-29 1987-12-07 Tokyo R & D:Kk Speed control unit for electric rolling stock
JP2006238634A (en) * 2005-02-25 2006-09-07 Nsk Ltd Brushless motor and electric power steering device using it
JP2015211549A (en) * 2014-04-25 2015-11-24 三菱電機株式会社 Motor generator

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