JPS54102507A - Motor drive circuit - Google Patents

Motor drive circuit

Info

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
Application number
JP866578A
Other languages
Japanese (ja)
Inventor
Hiroyuki Yamauchi
Hiroyuki Uchida
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP866578A priority Critical patent/JPS54102507A/en
Publication of JPS54102507A publication Critical patent/JPS54102507A/en
Pending legal-status Critical Current

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
JP866578A 1978-01-27 1978-01-27 Motor drive circuit Pending JPS54102507A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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