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JPS56121111A - Phase controlling circuit - Google Patents

Phase controlling circuit

Info

Publication number
JPS56121111A
JPS56121111A JP2275280A JP2275280A JPS56121111A JP S56121111 A JPS56121111 A JP S56121111A JP 2275280 A JP2275280 A JP 2275280A JP 2275280 A JP2275280 A JP 2275280A JP S56121111 A JPS56121111 A JP S56121111A
Authority
JP
Japan
Prior art keywords
revolution
rectangular wave
rotary phase
supplied
duty ratio
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
JP2275280A
Other languages
Japanese (ja)
Inventor
Yasunori Kobori
Isao Fukushima
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2275280A priority Critical patent/JPS56121111A/en
Publication of JPS56121111A publication Critical patent/JPS56121111A/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)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To improve start characteristics by quickening the start of a revolving speed by remarkably increasing the duty ratio of a rectangular wave, generated from a pulse signal expressing the rotary phase of a body of revolution, at the start. CONSTITUTION:Pulse signal A showing the rotary phase of body 1 of revolution is passed through monostable multivibrator 6 and rectangular-wave generator 14 to obtain rectangular wave K with a constant time width at its negative part. This is made by waveform shaping circuit 9 into a trapezoid signal, which is supplied to sample holding circuit 10 supplied with a reference pulse. With the output of holding circuit 10, the rotary phase of the body of revolution is controlled. As a result, since the intervals of pulses A are long when the body of revolution starts, the duty ratio of rectangular wave K is extremely large. Consequently, driving motor 13 is applied with a voltage higher than that in the stationary state and body 1 of revolution is applied with large driving force, quicking the start. Thus, the start characteristics can be improved.
JP2275280A 1980-02-27 1980-02-27 Phase controlling circuit Pending JPS56121111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2275280A JPS56121111A (en) 1980-02-27 1980-02-27 Phase controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2275280A JPS56121111A (en) 1980-02-27 1980-02-27 Phase controlling circuit

Publications (1)

Publication Number Publication Date
JPS56121111A true JPS56121111A (en) 1981-09-22

Family

ID=12091415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2275280A Pending JPS56121111A (en) 1980-02-27 1980-02-27 Phase controlling circuit

Country Status (1)

Country Link
JP (1) JPS56121111A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854885A (en) * 1981-09-25 1983-03-31 Sony Corp Control circuit for direct current motor
US4819113A (en) * 1984-03-29 1989-04-04 Sony Corporation Magnetic transducer head with inclined magnetic gap

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854885A (en) * 1981-09-25 1983-03-31 Sony Corp Control circuit for direct current motor
JPH0318439B2 (en) * 1981-09-25 1991-03-12 Sonii Kk
US4819113A (en) * 1984-03-29 1989-04-04 Sony Corporation Magnetic transducer head with inclined magnetic gap

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