JPS5634162A - Control system for drum motor - Google Patents

Control system for drum motor

Info

Publication number
JPS5634162A
JPS5634162A JP10862879A JP10862879A JPS5634162A JP S5634162 A JPS5634162 A JP S5634162A JP 10862879 A JP10862879 A JP 10862879A JP 10862879 A JP10862879 A JP 10862879A JP S5634162 A JPS5634162 A JP S5634162A
Authority
JP
Japan
Prior art keywords
error voltage
revolutions
motor
input
drum motor
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
JP10862879A
Other languages
Japanese (ja)
Inventor
Masao Ishikura
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP10862879A priority Critical patent/JPS5634162A/en
Publication of JPS5634162A publication Critical patent/JPS5634162A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE: To decrease the lock-in time up to the phase lock of drum motor at start, by discriminating the number of revolutions of durm with the numbr of revolution discriminator and controlling the drum motor with error voltage after stationary state of number of revolutions.
CONSTITUTION: The system is added with the signal selection switch 18 having the moving contact 18a, fixed contact 18b to which the phase error voltage 4 is input, and fixed contact 18c connected to ground, number of revolution discriminating circuit 20 outputting the output signal 21 with the input of the frequency errie voltage 6, and signal selection switch drive circuit 22. The number of revolution discriminator 20 discriminates whether the number of revolutions of the motor 12 is at stationary state or not, and until the number of revolutions reaches the steady state from start, the input of the phase error voltage 6 to the adder 5 is interrupted, and the motor is controlled only with the frequency error voltage obtained at the frequency discriminator 17, the phase error voltage 6 is input to the adder 5 after the number of revolutions reaches the steady state and the motor 12 is controlled with the error voltage. Thus, the lock-in time of the drum motor can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
JP10862879A 1979-08-28 1979-08-28 Control system for drum motor Pending JPS5634162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10862879A JPS5634162A (en) 1979-08-28 1979-08-28 Control system for drum motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10862879A JPS5634162A (en) 1979-08-28 1979-08-28 Control system for drum motor

Publications (1)

Publication Number Publication Date
JPS5634162A true JPS5634162A (en) 1981-04-06

Family

ID=14489607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10862879A Pending JPS5634162A (en) 1979-08-28 1979-08-28 Control system for drum motor

Country Status (1)

Country Link
JP (1) JPS5634162A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100216A (en) * 1983-11-04 1985-06-04 Sony Corp Phase controller
JPS614479A (en) * 1984-06-19 1986-01-10 Fuji Xerox Co Ltd Speed control circuit of motor
JPS63265578A (en) * 1987-04-20 1988-11-02 Hitachi Ltd Speed control system for motor
JPH0423259A (en) * 1990-05-18 1992-01-27 Hitachi Ltd Cylinder revolving speed controller for magnetic recording and reproducing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100216A (en) * 1983-11-04 1985-06-04 Sony Corp Phase controller
JPS614479A (en) * 1984-06-19 1986-01-10 Fuji Xerox Co Ltd Speed control circuit of motor
JPS63265578A (en) * 1987-04-20 1988-11-02 Hitachi Ltd Speed control system for motor
JPH0834702B2 (en) * 1987-04-20 1996-03-29 株式会社日立製作所 Motor speed controller
JPH0423259A (en) * 1990-05-18 1992-01-27 Hitachi Ltd Cylinder revolving speed controller for magnetic recording and reproducing device

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