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JPS56157291A - Control system for motor - Google Patents

Control system for motor

Info

Publication number
JPS56157291A
JPS56157291A JP5980280A JP5980280A JPS56157291A JP S56157291 A JPS56157291 A JP S56157291A JP 5980280 A JP5980280 A JP 5980280A JP 5980280 A JP5980280 A JP 5980280A JP S56157291 A JPS56157291 A JP S56157291A
Authority
JP
Japan
Prior art keywords
motor
frequency
rising time
output
rotating 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
Application number
JP5980280A
Other languages
Japanese (ja)
Inventor
Isamu Shibata
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP5980280A priority Critical patent/JPS56157291A/en
Publication of JPS56157291A publication Critical patent/JPS56157291A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To smoothly operate a motor by varying the frequency of a reference signal at the rising time of the motor in response to the rotating speed of the motor when controlling the motor with a PLL, thereby maintaining the state of the phase synchronizing step at the rising time. CONSTITUTION:When an optical system, a photosensitive unit of a copying machine are individually driven, the output of a clock oscillator 21 is supplied to a frequency divider 22, and the frequency dividing ratio is varied with the time responsive to the rotating speed of the motor 23 at the rising time of the motor 23. The output signal and the output from a rotary encoder 24 shaped in waveform are applied to a phase comparator 26 to operate the motor 23 through a loop filter 27 and a power amplifier 28. When the motor 23 rotates slowly, the frequency of the reference signal applied to the comparator 26 decreases with the result that the frequencies of the two input signals approach to each other. Accordingly, it is always maintained in the state of phase synchronizing step, thereby performing the smooth operation.
JP5980280A 1980-05-06 1980-05-06 Control system for motor Pending JPS56157291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5980280A JPS56157291A (en) 1980-05-06 1980-05-06 Control system for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5980280A JPS56157291A (en) 1980-05-06 1980-05-06 Control system for motor

Publications (1)

Publication Number Publication Date
JPS56157291A true JPS56157291A (en) 1981-12-04

Family

ID=13123757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5980280A Pending JPS56157291A (en) 1980-05-06 1980-05-06 Control system for motor

Country Status (1)

Country Link
JP (1) JPS56157291A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190293A (en) * 1982-04-26 1983-11-07 Sanyo Electric Co Ltd Speed control circuit for motor
JPS59185187A (en) * 1983-04-01 1984-10-20 Fuji Xerox Co Ltd Speed controller of copying machine
JPS60238854A (en) * 1984-05-11 1985-11-27 Fuji Xerox Co Ltd Alarm buzzer driving circuit of electronic copying machine
EP0489375A2 (en) * 1990-11-30 1992-06-10 Victor Company Of Japan, Limited A drum servo system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190293A (en) * 1982-04-26 1983-11-07 Sanyo Electric Co Ltd Speed control circuit for motor
JPS59185187A (en) * 1983-04-01 1984-10-20 Fuji Xerox Co Ltd Speed controller of copying machine
JPS60238854A (en) * 1984-05-11 1985-11-27 Fuji Xerox Co Ltd Alarm buzzer driving circuit of electronic copying machine
EP0489375A2 (en) * 1990-11-30 1992-06-10 Victor Company Of Japan, Limited A drum servo system
US5751509A (en) * 1990-11-30 1998-05-12 Victor Company Of Japan, Ltd. Drum servo system using a PLL with frequency divided reference clock signals as an input

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