JPS5619393A - Dc motor control circuit - Google Patents

Dc motor control circuit

Info

Publication number
JPS5619393A
JPS5619393A JP9157279A JP9157279A JPS5619393A JP S5619393 A JPS5619393 A JP S5619393A JP 9157279 A JP9157279 A JP 9157279A JP 9157279 A JP9157279 A JP 9157279A JP S5619393 A JPS5619393 A JP S5619393A
Authority
JP
Japan
Prior art keywords
potential
voltage
reference voltages
control circuit
motor 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
JP9157279A
Other languages
Japanese (ja)
Other versions
JPS6217480B2 (en
Inventor
Tadashi Saito
Toshihiko Nakajima
Toshio Osada
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 JP9157279A priority Critical patent/JPS5619393A/en
Priority to US06/169,795 priority patent/US4356437A/en
Publication of JPS5619393A publication Critical patent/JPS5619393A/en
Publication of JPS6217480B2 publication Critical patent/JPS6217480B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • 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
    • H02P6/14—Electronic commutators

Landscapes

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

Abstract

PURPOSE:To remove the affect of an offset of the output voltage and the irregularity of the sensitivity of a magnetic field detector in a DC motor control circuit by limiting the amplified output voltage of the magnetic field detector to upper and lower reference voltages of the upper and lower amplitude arround a neutral potential of the two reference voltages as a center. CONSTITUTION:The output potential VC of a Hall element 42 is a neutral potential of the reference voltage VA and the voltage VB, and is amplified by a differential amplifier 45 around the potential VC as a center to be limited to the upper and lower reference voltages VA and VB at the upper and the lower amplitudes by diodes 48 and 51 and to be applied through power transistors 54, 55 to a stator coil 60. The drive current is switched at the points D, D' where the drive current waveform equals to the central potentials VC, VC'. The potential gradients at the potentials D, D' are increased or decreased in response to the variation of the voltage VA. Accordingly, the drive currents are switched always in minimum speed to cause no turbulence due to the switching of the drive currents.
JP9157279A 1979-07-20 1979-07-20 Dc motor control circuit Granted JPS5619393A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9157279A JPS5619393A (en) 1979-07-20 1979-07-20 Dc motor control circuit
US06/169,795 US4356437A (en) 1979-07-20 1980-07-17 Control circuit for DC motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9157279A JPS5619393A (en) 1979-07-20 1979-07-20 Dc motor control circuit

Publications (2)

Publication Number Publication Date
JPS5619393A true JPS5619393A (en) 1981-02-24
JPS6217480B2 JPS6217480B2 (en) 1987-04-17

Family

ID=14030234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9157279A Granted JPS5619393A (en) 1979-07-20 1979-07-20 Dc motor control circuit

Country Status (1)

Country Link
JP (1) JPS5619393A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126596U (en) * 1983-02-14 1984-08-25 株式会社ケンウッド motor drive circuit
US4760315A (en) * 1985-09-20 1988-07-26 Sony Corporation Brushless motor drive circuit
JP2005292800A (en) * 2004-03-09 2005-10-20 Pentax Corp Image blurring correcting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126596U (en) * 1983-02-14 1984-08-25 株式会社ケンウッド motor drive circuit
US4760315A (en) * 1985-09-20 1988-07-26 Sony Corporation Brushless motor drive circuit
JP2005292800A (en) * 2004-03-09 2005-10-20 Pentax Corp Image blurring correcting device
JP4679171B2 (en) * 2004-03-09 2011-04-27 Ｈｏｙａ株式会社 Image blur correction device

Also Published As

Publication number Publication date
JPS6217480B2 (en) 1987-04-17

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