JPS54102507A - Motor drive circuit - Google Patents
Motor drive circuitInfo
- Publication number
- JPS54102507A JPS54102507A JP866578A JP866578A JPS54102507A JP S54102507 A JPS54102507 A JP S54102507A JP 866578 A JP866578 A JP 866578A JP 866578 A JP866578 A JP 866578A JP S54102507 A JPS54102507 A JP S54102507A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- amplitude
- amplifiers
- speed
- output
- 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 adjust the speed of the motor by feeding drive current to the coil of the motor according to a detected output regulated in the amplitude through adjustment of amplitude of detection output of a position detection means adapted to detect the rotating position of the rotor according to a speed regulating signal or control.
CONSTITUTION: A sine wave position detecting signal with a constant amplitude obtained from the respective terminals 4b, 4c, 5b and 5c of position detecting elements 4 and 5 are fed to input terminals I of corresponding voltage controlled amplifier (VCA) and the amplification degree of amplifiers 34 and 35 is controlled according to the voltage fed to the control terminal K. A comparison circuit 13 compares a speed detection signal with a reference signal of a reference speed setting circuit 14 and provided an error output signal Vs to the terminal of the amplifiers 34 and 35. Accordingly, the gain of the amplifiers 34 and 35 is controlled according to the signal Vs to yield an amplitude depending on the the error signal Vs for the amplitude the output signal.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP866578A JPS54102507A (en) | 1978-01-27 | 1978-01-27 | Motor drive circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP866578A JPS54102507A (en) | 1978-01-27 | 1978-01-27 | Motor drive circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54102507A true JPS54102507A (en) | 1979-08-13 |
Family
ID=11699222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP866578A Pending JPS54102507A (en) | 1978-01-27 | 1978-01-27 | Motor drive circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54102507A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57163195U (en) * | 1981-04-02 | 1982-10-14 | ||
JPS62203589A (en) * | 1986-02-28 | 1987-09-08 | Otani Denki Kk | Hall motor drive circuit |
-
1978
- 1978-01-27 JP JP866578A patent/JPS54102507A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57163195U (en) * | 1981-04-02 | 1982-10-14 | ||
JPS62203589A (en) * | 1986-02-28 | 1987-09-08 | Otani Denki Kk | Hall motor drive circuit |
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