JPS57177289A - Constant-speed control circuit for dc motor - Google Patents

Constant-speed control circuit for dc motor

Info

Publication number
JPS57177289A
JPS57177289A JP56059230A JP5923081A JPS57177289A JP S57177289 A JPS57177289 A JP S57177289A JP 56059230 A JP56059230 A JP 56059230A JP 5923081 A JP5923081 A JP 5923081A JP S57177289 A JPS57177289 A JP S57177289A
Authority
JP
Japan
Prior art keywords
motor
transistors
induced voltage
capacitor
conducts
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
JP56059230A
Other languages
Japanese (ja)
Inventor
Itsuki Ban
Manabu Shiraki
Ikumasa Ikeda
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.)
Sekoh Giken KK
Secoh Giken Co Ltd
Original Assignee
Sekoh Giken KK
Secoh Giken 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 Sekoh Giken KK, Secoh Giken Co Ltd filed Critical Sekoh Giken KK
Priority to JP56059230A priority Critical patent/JPS57177289A/en
Publication of JPS57177289A publication Critical patent/JPS57177289A/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
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
    • H02P7/2913—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To enable detection of the rotating speed of a DC motor with an induced voltage of the motor by providing a time zone in which no current flows through the motor and sampling an inverted induced voltage during this time zone. CONSTITUTION:A Schmitt trigger circuit 26 blocks transistors 27, 7 when a current flowing through a motor 9 detected by a resistor 10 rises over the upper side slice level and conducts the transistors 27, 7 when the currnet drops below the lower side slice level. A Schmitt trigger circuit 31 interrupts the transistor 7 when the output voltage of a bridge diode 2 becomes the prescribed level. An operational amplifier 15 conducts transistors 16, 12 when the armature current of the motor 9 is zero and charges the inverted induced voltage of the motor 9 in a capacitor 14. The terminal voltage of the capacitor 14 is applied to an operational amplifier 20 as a rotating speed signal of the motor 9.
JP56059230A 1981-04-21 1981-04-21 Constant-speed control circuit for dc motor Pending JPS57177289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56059230A JPS57177289A (en) 1981-04-21 1981-04-21 Constant-speed control circuit for dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56059230A JPS57177289A (en) 1981-04-21 1981-04-21 Constant-speed control circuit for dc motor

Publications (1)

Publication Number Publication Date
JPS57177289A true JPS57177289A (en) 1982-10-30

Family

ID=13107362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56059230A Pending JPS57177289A (en) 1981-04-21 1981-04-21 Constant-speed control circuit for dc motor

Country Status (1)

Country Link
JP (1) JPS57177289A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403684A2 (en) * 1989-06-22 1990-12-27 Rosen, Howard Antenna positioning system
JPH0360392A (en) * 1989-07-25 1991-03-15 Windings Inc Speed control circuit of dc motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510319B2 (en) * 1975-10-07 1980-03-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510319B2 (en) * 1975-10-07 1980-03-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403684A2 (en) * 1989-06-22 1990-12-27 Rosen, Howard Antenna positioning system
EP0403684A3 (en) * 1989-06-22 1991-04-24 Rosen, Howard Antenna positioning system
JPH0360392A (en) * 1989-07-25 1991-03-15 Windings Inc Speed control circuit of dc motor

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