JPS57138890A - Constant-speed controlling circuit for dc motor - Google Patents

Constant-speed controlling circuit for dc motor

Info

Publication number
JPS57138890A
JPS57138890A JP56024338A JP2433881A JPS57138890A JP S57138890 A JPS57138890 A JP S57138890A JP 56024338 A JP56024338 A JP 56024338A JP 2433881 A JP2433881 A JP 2433881A JP S57138890 A JPS57138890 A JP S57138890A
Authority
JP
Japan
Prior art keywords
voltage
motor
transistors
capacitor
induced voltage
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
JP56024338A
Other languages
Japanese (ja)
Other versions
JPH0140599B2 (en
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 JP56024338A priority Critical patent/JPS57138890A/en
Publication of JPS57138890A publication Critical patent/JPS57138890A/en
Publication of JPH0140599B2 publication Critical patent/JPH0140599B2/ja
Granted 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
    • H02P7/2855—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 whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Abstract

PURPOSE:To enable the detection of the rotating speed of a motor with a reversely induced voltage by sampling the reversely induced voltage in a time zone when an electric power is not supplied to the motor and holding the reversely induced voltage by a capacitor in the other time zone. CONSTITUTION:A Schmitt trigger circuit 25 interrupts transistors 26, 7 when a current flowing through a motor 9 detected by a resistor 10 becomes higher than the upper slice level and conducts the transistors 26, 7 when it becomes lower than the lower slice level. When an armature current becomes zero, the output of an OP amplifier 15 is raised, transistors 16, 12 are conducted to sample reveresely induced voltage at a capacitor 14, and the transistors 16, 12 are interrupted while the armature current flows. Accordingly, the voltage of a capacitor 14 is held. An OP amplifier 20 produces a reference voltage responsive to the differential voltage between the speed command voltage and the voltage of the capacitor 14.
JP56024338A 1981-02-23 1981-02-23 Constant-speed controlling circuit for dc motor Granted JPS57138890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56024338A JPS57138890A (en) 1981-02-23 1981-02-23 Constant-speed controlling circuit for dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56024338A JPS57138890A (en) 1981-02-23 1981-02-23 Constant-speed controlling circuit for dc motor

Publications (2)

Publication Number Publication Date
JPS57138890A true JPS57138890A (en) 1982-08-27
JPH0140599B2 JPH0140599B2 (en) 1989-08-30

Family

ID=12135387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56024338A Granted JPS57138890A (en) 1981-02-23 1981-02-23 Constant-speed controlling circuit for dc motor

Country Status (1)

Country Link
JP (1) JPS57138890A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619182A (en) * 1984-06-22 1986-01-16 Shinko Electric Co Ltd Speed controller of wire feeding motor
EP0177683A2 (en) * 1984-10-10 1986-04-16 UTP - Schweissmaterial GmbH & Co. Speed control method for DC motors
JPS62138082A (en) * 1985-12-11 1987-06-20 Hitachi Seiko Ltd Control circuit for dc motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510319U (en) * 1978-07-04 1980-01-23

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245158A (en) * 1975-10-07 1977-04-09 Nishihara Environ Sanit Res Corp Method of and apparatus for denitrifying reaction treatment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510319U (en) * 1978-07-04 1980-01-23

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619182A (en) * 1984-06-22 1986-01-16 Shinko Electric Co Ltd Speed controller of wire feeding motor
JP2529936B2 (en) * 1984-06-22 1996-09-04 神鋼電機 株式会社 Speed control device for wire feeding / feeding motive
EP0177683A2 (en) * 1984-10-10 1986-04-16 UTP - Schweissmaterial GmbH & Co. Speed control method for DC motors
JPS62138082A (en) * 1985-12-11 1987-06-20 Hitachi Seiko Ltd Control circuit for dc motor

Also Published As

Publication number Publication date
JPH0140599B2 (en) 1989-08-30

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