JPS5694993A - Speed control circuit for electromotor - Google Patents

Speed control circuit for electromotor

Info

Publication number
JPS5694993A
JPS5694993A JP16930279A JP16930279A JPS5694993A JP S5694993 A JPS5694993 A JP S5694993A JP 16930279 A JP16930279 A JP 16930279A JP 16930279 A JP16930279 A JP 16930279A JP S5694993 A JPS5694993 A JP S5694993A
Authority
JP
Japan
Prior art keywords
voltage
speed
electromotor
reference voltage
circuit
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
JP16930279A
Other languages
Japanese (ja)
Other versions
JPS6311879B2 (en
Inventor
Michio Hisatake
Kazuji Yamamoto
Toru Hyodo
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.)
Janome Corp
Original Assignee
Janome Sewing Machine 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 Janome Sewing Machine Co Ltd filed Critical Janome Sewing Machine Co Ltd
Priority to JP16930279A priority Critical patent/JPS5694993A/en
Publication of JPS5694993A publication Critical patent/JPS5694993A/en
Publication of JPS6311879B2 publication Critical patent/JPS6311879B2/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
    • H02P7/2805—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 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)
  • Sewing Machines And Sewing (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To enable the maximum speed only to be changed keeping revolving speeds at the start constant by a method wherein a zener diode and a resistance element are provided on the output side of a speed reference voltage generating circuit and the speed reference voltage is changed at the voltage more than a set value. CONSTITUTION:Thyristors CR1 and SCR2 are connected in parallel with the electromotor M, and a series circuit of the zener diode ZD2 and variable resistor VR3 is connected to the output side of a circuit in which the reference voltage ES of a gate pulse is produced, in a circuit in which the speed of the electromotor M is controlled by controlling gate pulse phases of the both thyristors. The speed control can uniformly be performed by controlling with a controller CONT, until the output voltage ER of a transistor TR reaches the zener voltage EZ of the zener diode ZD2. However, if the voltage ER becomes larger than the voltage EZ, a tilt angle of the reference voltage ES changes according to the positions of the variable resistor VR3 and enables the maximum speed to be changed.
JP16930279A 1979-12-27 1979-12-27 Speed control circuit for electromotor Granted JPS5694993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16930279A JPS5694993A (en) 1979-12-27 1979-12-27 Speed control circuit for electromotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16930279A JPS5694993A (en) 1979-12-27 1979-12-27 Speed control circuit for electromotor

Publications (2)

Publication Number Publication Date
JPS5694993A true JPS5694993A (en) 1981-07-31
JPS6311879B2 JPS6311879B2 (en) 1988-03-16

Family

ID=15884001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16930279A Granted JPS5694993A (en) 1979-12-27 1979-12-27 Speed control circuit for electromotor

Country Status (1)

Country Link
JP (1) JPS5694993A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4479077A (en) * 1982-09-15 1984-10-23 Pfaff Haushaltmaschinen Gmbh Sewing machine with a universal motor
JPS61174900U (en) * 1985-04-19 1986-10-31

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4479077A (en) * 1982-09-15 1984-10-23 Pfaff Haushaltmaschinen Gmbh Sewing machine with a universal motor
JPS61174900U (en) * 1985-04-19 1986-10-31
JPH0540719Y2 (en) * 1985-04-19 1993-10-15

Also Published As

Publication number Publication date
JPS6311879B2 (en) 1988-03-16

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