JPS5475521A - Speed control device of motor - Google Patents

Speed control device of motor

Info

Publication number
JPS5475521A
JPS5475521A JP14271077A JP14271077A JPS5475521A JP S5475521 A JPS5475521 A JP S5475521A JP 14271077 A JP14271077 A JP 14271077A JP 14271077 A JP14271077 A JP 14271077A JP S5475521 A JPS5475521 A JP S5475521A
Authority
JP
Japan
Prior art keywords
speed
motor
control
value
basic
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
JP14271077A
Other languages
Japanese (ja)
Inventor
Kazuhiko Hasegawa
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 JP14271077A priority Critical patent/JPS5475521A/en
Publication of JPS5475521A publication Critical patent/JPS5475521A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE: To prevent overload, and at the same time, facilitate to control acceleration, by making memory of predetermined speed signal which is coresponded to armature current in basic speed of a motor, and limiting speed instruction value in this memory content.
CONSTITUTION: Automatic speed control series which control speed of electric motor M, coresponded to speed instruction No and automatic field weakening control series which control field weakening control over basic speed of the motor M are prepared, when speed is controlled, signal of armature current detector 6 is inverted to revolution number by a calculator 17, is memorized in an integrated circuit 18, and output of an amplifier 1 of speed instruction value is limited through limiter circuit 19. Therefore, overload of the motor can be prevented and working efficiency can be improved, because limiter is acted to a value which is equivalent to rated revolution number upto basic speed in the amplifier 1, and when basic speed is reached, load is limited to memory value of the integrated circuit 18.
COPYRIGHT: (C)1979,JPO&Japio
JP14271077A 1977-11-30 1977-11-30 Speed control device of motor Pending JPS5475521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14271077A JPS5475521A (en) 1977-11-30 1977-11-30 Speed control device of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14271077A JPS5475521A (en) 1977-11-30 1977-11-30 Speed control device of motor

Publications (1)

Publication Number Publication Date
JPS5475521A true JPS5475521A (en) 1979-06-16

Family

ID=15321761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14271077A Pending JPS5475521A (en) 1977-11-30 1977-11-30 Speed control device of motor

Country Status (1)

Country Link
JP (1) JPS5475521A (en)

Similar Documents

Publication Publication Date Title
JPS5475521A (en) Speed control device of motor
JPS5468609A (en) Tape running control method
JPS534947A (en) Controller for elevator
JPS5759493A (en) Overcurrent detecting system at variable frequency controlling time
JPS51150020A (en) Automatic load adjusting device of generator
WIMMER Experimental evaluation of a volts-per-hertz reference circuit for the isotope Brayton system(Experimental evaluation of volts-per-hertz reference curcuit incorporated in voltage regulator to control turbine-driven alternator with application to Brayton cycle space power system)
JPS5537866A (en) Speed controller for motor
JPS53123831A (en) Hunting protection device of hysteresis motors
JPS5442638A (en) Circuit breaker
JPS5274814A (en) Speed limiter for motor
JPS52146818A (en) Device for restricting shaft torque variation in rotary shaft system
JPS5361024A (en) Power-off reset device for inverter
JPS5494628A (en) Governor device of alternating current generator
JPS541847A (en) Setting reset current in automatic current limiter
JPS5419111A (en) Controlling motor with shunt field winding
JPS57102577A (en) Wind power generator
JPS52120353A (en) Protective device for dc power transmission system
JPS5425246A (en) Speed control apparatus for welding wire feeding motor
JPS5532436A (en) Inverter
JPS5362151A (en) Checking circuit for circuit breaker
JPS5289701A (en) Controlling circuit for the number of rotations of turbine
JPS53135001A (en) Driving system for turbo-machines
JPS5391357A (en) Digital protective relay device
JPS5332321A (en) Acceleration and deceleration control system for ac motor
JPS52135033A (en) Generator protective device