JPS54125418A - Dc motor - Google Patents
Dc motorInfo
- 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
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
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)
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 |
-
1978
- 1978-03-23 JP JP3386178A patent/JPS54125418A/en active Pending
Cited By (13)
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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