JPS5725187A - Speed controlling device for motor of sewing machine - Google Patents

Speed controlling device for motor of sewing machine

Info

Publication number
JPS5725187A
JPS5725187A JP9897580A JP9897580A JPS5725187A JP S5725187 A JPS5725187 A JP S5725187A JP 9897580 A JP9897580 A JP 9897580A JP 9897580 A JP9897580 A JP 9897580A JP S5725187 A JPS5725187 A JP S5725187A
Authority
JP
Japan
Prior art keywords
voltage
speed
motor
output
speed 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.)
Pending
Application number
JP9897580A
Other languages
Japanese (ja)
Inventor
Noriyuki Yoshida
Yoshimi Asai
Original Assignee
Brother Ind 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 Brother Ind Ltd filed Critical Brother Ind Ltd
Priority to JP9897580A priority Critical patent/JPS5725187A/en
Publication of JPS5725187A publication Critical patent/JPS5725187A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06Arrangements 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
    • H02P7/18Arrangements 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
    • H02P7/24Arrangements 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
    • H02P7/28Arrangements 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
    • H02P7/285Arrangements 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
    • H02P7/29Arrangements 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
    • H02P7/2913Arrangements 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

Abstract

PURPOSE:To enhance the accuracy of speed control and also to extend a speed control range by comparing an actual speed voltage with a reference voltage of a triangular waveshape with a fixed frequency and by ON/OFF controlling a feed control transistor with this output. CONSTITUTION:Connecting an oscillator 2 to an integrating circuit consisting of a resistor 8 and a capacitor 9, a triangular waveshaped reference voltage SB which is repeated in synchronism with a pulse signal SA falls which down at a fixed frequency is obtained. Besides, a speed voltage SC is obtained by rectifying and smoothing an output of a speed voltage generator circuit 13 connected with a DC motor 12, to be controlled, and further a speed voltage SC1 is obtained by adjusting this speed voltage SC with a speed controller 16. The reference voltage SB and the speed voltage SC1 are fed into a comparator circuit 19 for level comparison to obtain its output signal SD1, with which (SD1) a transistor 23 for feed control is ON-OFF controlled.
JP9897580A 1980-07-18 1980-07-18 Speed controlling device for motor of sewing machine Pending JPS5725187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9897580A JPS5725187A (en) 1980-07-18 1980-07-18 Speed controlling device for motor of sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9897580A JPS5725187A (en) 1980-07-18 1980-07-18 Speed controlling device for motor of sewing machine

Publications (1)

Publication Number Publication Date
JPS5725187A true JPS5725187A (en) 1982-02-09

Family

ID=14234026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9897580A Pending JPS5725187A (en) 1980-07-18 1980-07-18 Speed controlling device for motor of sewing machine

Country Status (1)

Country Link
JP (1) JPS5725187A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53817A (en) * 1976-06-23 1978-01-07 Matsushita Electric Ind Co Ltd Speed controller for motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53817A (en) * 1976-06-23 1978-01-07 Matsushita Electric Ind Co Ltd Speed controller for motor

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