JPS5610087A - Driving device for variable speed electric motor - Google Patents

Driving device for variable speed electric motor

Info

Publication number
JPS5610087A
JPS5610087A JP8369379A JP8369379A JPS5610087A JP S5610087 A JPS5610087 A JP S5610087A JP 8369379 A JP8369379 A JP 8369379A JP 8369379 A JP8369379 A JP 8369379A JP S5610087 A JPS5610087 A JP S5610087A
Authority
JP
Japan
Prior art keywords
frequency
dividing
electric motor
output
voltage control
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
Application number
JP8369379A
Other languages
Japanese (ja)
Other versions
JPS6137872B2 (en
Inventor
Yoshio Koga
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8369379A priority Critical patent/JPS5610087A/en
Publication of JPS5610087A publication Critical patent/JPS5610087A/en
Publication of JPS6137872B2 publication Critical patent/JPS6137872B2/ja
Granted 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
    • H02P23/16—Controlling the angular speed of one shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To make the number of revolutions optionally adjustable through the setting of a frequency-dividing ratio by frequency-dividing of the rotary speed signal with the first frequency-dividing ratio, and at the same time, frequency-dividing of the output of a voltage control variable frequency oscillator with the second frequency-dividing ratio, then controlling the oscillation-frequency so that they may be equal. CONSTITUTION:The speed signal pulse's frequency of a capstan motor 1 for VTR, etc. is frequency-divided into 1/N by means of the first frequency divider 7. In addition, the output frequency of the voltage control variable frequency oscillator 8 is frequency-divided into 1/M by means of the second frequency-divider 9. These both outputs are applied to a comparison circuit 10 and its difference is sought and supplied to the voltage control variable frequency oscillator 8 through low-pass filter 11. After this process, its output is input to servo circuit 5, to control the electric motor 1. Consequently, it is possible to optionally adjust the electric motor 1's number of revolutions by setting the first and second frequency-dividing ratios and thus effect stable variable speed control.
JP8369379A 1979-06-29 1979-06-29 Driving device for variable speed electric motor Granted JPS5610087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8369379A JPS5610087A (en) 1979-06-29 1979-06-29 Driving device for variable speed electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8369379A JPS5610087A (en) 1979-06-29 1979-06-29 Driving device for variable speed electric motor

Publications (2)

Publication Number Publication Date
JPS5610087A true JPS5610087A (en) 1981-02-02
JPS6137872B2 JPS6137872B2 (en) 1986-08-26

Family

ID=13809567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8369379A Granted JPS5610087A (en) 1979-06-29 1979-06-29 Driving device for variable speed electric motor

Country Status (1)

Country Link
JP (1) JPS5610087A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971456U (en) * 1982-11-01 1984-05-15 ソニー株式会社 capstan control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5971456U (en) * 1982-11-01 1984-05-15 ソニー株式会社 capstan control device

Also Published As

Publication number Publication date
JPS6137872B2 (en) 1986-08-26

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