JPS5662081A - Controlling circuit for speed of direct current motor - Google Patents

Controlling circuit for speed of direct current motor

Info

Publication number
JPS5662081A
JPS5662081A JP13666779A JP13666779A JPS5662081A JP S5662081 A JPS5662081 A JP S5662081A JP 13666779 A JP13666779 A JP 13666779A JP 13666779 A JP13666779 A JP 13666779A JP S5662081 A JPS5662081 A JP S5662081A
Authority
JP
Japan
Prior art keywords
speed
motor
circuit
signals
inputted
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
JP13666779A
Other languages
Japanese (ja)
Inventor
Toshio Hoshino
Masami Furuta
Susumu Yamamoto
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP13666779A priority Critical patent/JPS5662081A/en
Publication of JPS5662081A publication Critical patent/JPS5662081A/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
    • H02P7/291—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 with on-off control between two set points, e.g. controlling by hysteresis

Landscapes

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

Abstract

PURPOSE:To turn a motor stably even in a low-speed mode by a method wherein back electromotive voltage generated during each OFF period of the motor is detected, and the detecting signals are smoothed and equalized by means of a capacitor and compared with reference signals. CONSTITUTION:When output from an AC power source 1 is rectified by means of a rectifying circuit 2 and applied to a DC motor 3 through a phase controlling switch 6, the back electromotive voltage of the DC motor 3 is detected by means of a detecting circuit 4 during an OFF period of the phase controlling switch 6, and the detecting signals are inputted to a terminal A of a speed controlling circuit 5. Input signals at the terminal A of the speed controlling circuit 5 are smoothed and uniformalized by means of a capacitor C2, inputted to a differential amplifying circuit, and compared with saw-tooth waves as reference speed signals from a capacitor C1. The results of the comparison are inputted to the phase controlling switch 6 from a terminal B, and the speed of the DC motor 3 is controlled.
JP13666779A 1979-10-23 1979-10-23 Controlling circuit for speed of direct current motor Pending JPS5662081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13666779A JPS5662081A (en) 1979-10-23 1979-10-23 Controlling circuit for speed of direct current motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13666779A JPS5662081A (en) 1979-10-23 1979-10-23 Controlling circuit for speed of direct current motor

Publications (1)

Publication Number Publication Date
JPS5662081A true JPS5662081A (en) 1981-05-27

Family

ID=15180670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13666779A Pending JPS5662081A (en) 1979-10-23 1979-10-23 Controlling circuit for speed of direct current motor

Country Status (1)

Country Link
JP (1) JPS5662081A (en)

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