JPS54110414A - Drive circuit of motor - Google Patents
Drive circuit of motorInfo
- Publication number
- JPS54110414A JPS54110414A JP1827378A JP1827378A JPS54110414A JP S54110414 A JPS54110414 A JP S54110414A JP 1827378 A JP1827378 A JP 1827378A JP 1827378 A JP1827378 A JP 1827378A JP S54110414 A JPS54110414 A JP S54110414A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- interlinkage flux
- flux density
- potential
- motor coil
- 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.)
- Granted
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To obtain constant rotating torque by detecting the interlinkage flux density of DC motor coil and performing an inversion operation of the detected signal to let the current flow in the motor coil corresponding to the output signal thereof.
CONSTITUTION: Hall effect elements 2a ∼ 2c detect the leakage magnet flux of a rotor magnet to obtain sine wave detecting signals Ea ∼ Ec proportional to the interlinkage flux densities of the motor coil 16a to 16c via differential amplifiers 17a ∼ 17c. Said signal potentials are given to logarithmic converter circuit 26 and are input to a substractor circuit 28 together with a referential potential Vs converted to logarithm and then given to a logarithmic reverse converter 29 and potential- current conversion circuit 30. A rotating torque is obtained from a current i and the interlinkage flux density of recpective coil which is determined by speed adjustment potential Vs independent of thd interlinkage flux density of the coil.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1827378A JPS54110414A (en) | 1978-02-20 | 1978-02-20 | Drive circuit of motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1827378A JPS54110414A (en) | 1978-02-20 | 1978-02-20 | Drive circuit of motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54110414A true JPS54110414A (en) | 1979-08-29 |
JPS6111555B2 JPS6111555B2 (en) | 1986-04-03 |
Family
ID=11967034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1827378A Granted JPS54110414A (en) | 1978-02-20 | 1978-02-20 | Drive circuit of motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54110414A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496886A (en) * | 1982-11-08 | 1985-01-29 | Hewlett-Packard Company | Three state driver for inductive loads |
JPH02158479A (en) * | 1988-12-09 | 1990-06-18 | Yamaha Motor Co Ltd | Fuel cap device for scooter type vehicle |
-
1978
- 1978-02-20 JP JP1827378A patent/JPS54110414A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496886A (en) * | 1982-11-08 | 1985-01-29 | Hewlett-Packard Company | Three state driver for inductive loads |
JPH02158479A (en) * | 1988-12-09 | 1990-06-18 | Yamaha Motor Co Ltd | Fuel cap device for scooter type vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPS6111555B2 (en) | 1986-04-03 |
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