JPS57162977A - Rotating speed control circuit for motor - Google Patents

Rotating speed control circuit for motor

Info

Publication number
JPS57162977A
JPS57162977A JP56047977A JP4797781A JPS57162977A JP S57162977 A JPS57162977 A JP S57162977A JP 56047977 A JP56047977 A JP 56047977A JP 4797781 A JP4797781 A JP 4797781A JP S57162977 A JPS57162977 A JP S57162977A
Authority
JP
Japan
Prior art keywords
signal
motor
circuit
read
pulse
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
JP56047977A
Other languages
Japanese (ja)
Inventor
Takeo Masuda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56047977A priority Critical patent/JPS57162977A/en
Publication of JPS57162977A publication Critical patent/JPS57162977A/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
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/06—Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
    • 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/04—Arrangements for controlling or regulating the speed or torque of more than one motor
    • H02P2006/045—Control of current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rotational Drive Of Disk (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To remarkably finely control the rotation of a motor by reading out servo information or clock information written in a magnetic disc, comparing the read out signal with a reference frequency signal, and controlling the rotation of a DC motor. CONSTITUTION:Servo information or clock information read out signal by a read-out head 1 is amplified by a preamplifier 2, is inputted to a pulse production circuit 3, and the prescribed pulse signal corresponding to the read-out signal is inputted to a synchronizing circuit 4. The circuit 4 operates in PLO, and output pulse signal from the circuit 4 is compared with a reference frequency signal from a crystal oscillator 6 through a pulse oscillator 7 and a counter 8. Switching elements 101-103 are controlled ON or OFF by the output signals of AND circuits 91-93 which receives the output signal of a frequency comparator 5 and an excitation signal, thereby controlling the energization currents of motor coils 111-113.
JP56047977A 1981-03-31 1981-03-31 Rotating speed control circuit for motor Pending JPS57162977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047977A JPS57162977A (en) 1981-03-31 1981-03-31 Rotating speed control circuit for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047977A JPS57162977A (en) 1981-03-31 1981-03-31 Rotating speed control circuit for motor

Publications (1)

Publication Number Publication Date
JPS57162977A true JPS57162977A (en) 1982-10-06

Family

ID=12790367

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047977A Pending JPS57162977A (en) 1981-03-31 1981-03-31 Rotating speed control circuit for motor

Country Status (1)

Country Link
JP (1) JPS57162977A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140081U (en) * 1984-08-13 1986-03-13 ソニー株式会社 spindle servo device
US6067202A (en) * 1996-12-18 2000-05-23 International Business Machines Corporation Method and apparatus for controlling spindle motor commutation switching times in a disk drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140081U (en) * 1984-08-13 1986-03-13 ソニー株式会社 spindle servo device
JPH0438630Y2 (en) * 1984-08-13 1992-09-09
US6067202A (en) * 1996-12-18 2000-05-23 International Business Machines Corporation Method and apparatus for controlling spindle motor commutation switching times in a disk drive

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