JPS5592591A - Controller for operation of induction motor - Google Patents

Controller for operation of induction motor

Info

Publication number
JPS5592591A
JPS5592591A JP16413678A JP16413678A JPS5592591A JP S5592591 A JPS5592591 A JP S5592591A JP 16413678 A JP16413678 A JP 16413678A JP 16413678 A JP16413678 A JP 16413678A JP S5592591 A JPS5592591 A JP S5592591A
Authority
JP
Japan
Prior art keywords
circuit
induction motor
slip frequency
speed
output
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
JP16413678A
Other languages
Japanese (ja)
Other versions
JPS5930039B2 (en
Inventor
Shigeki Kawada
Hiroshi Ishida
Yutaka Koiwai
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
Fujitsu Fanuc 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 Fanuc Corp, Fujitsu Fanuc Ltd filed Critical Fanuc Corp
Priority to JP53164136A priority Critical patent/JPS5930039B2/en
Publication of JPS5592591A publication Critical patent/JPS5592591A/en
Publication of JPS5930039B2 publication Critical patent/JPS5930039B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To operate an induction motor stably when the motor rotates at a low speed by a system wherein the induction motor is driven by means of a pulse width modulation type inverter while a clamp circuit for clamping slip frequency instruction signals is mounted to the control system.
CONSTITUTION: Instruction speed and actual speed are compared and supplied to a slip frequency instruction signal generator 7, and the output passes through a clamp circuit 21 clamped by means of a slip frequency set circuit 23, is added to the acutal speed and is given to a pulse width modulation circuit 16 through a V-F converter 10. Meanwhile, comparison signals are transmitted to a multiplying circuit 14 through a limiter circuit 13, and the output is composed with the output of the converter 10 by means of a composite circuit 15. Consequently, operation in case of low speeds can be stabilized while slip frequency instruction signals are clamped, thus softening impact force in case of the orientation of a machine tool, then optimally controlling an induction motor.
COPYRIGHT: (C)1980,JPO&Japio
JP53164136A 1978-12-30 1978-12-30 Induction motor operation control device Expired JPS5930039B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53164136A JPS5930039B2 (en) 1978-12-30 1978-12-30 Induction motor operation control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53164136A JPS5930039B2 (en) 1978-12-30 1978-12-30 Induction motor operation control device

Publications (2)

Publication Number Publication Date
JPS5592591A true JPS5592591A (en) 1980-07-14
JPS5930039B2 JPS5930039B2 (en) 1984-07-24

Family

ID=15787422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53164136A Expired JPS5930039B2 (en) 1978-12-30 1978-12-30 Induction motor operation control device

Country Status (1)

Country Link
JP (1) JPS5930039B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0246273U (en) * 1988-09-21 1990-03-29

Also Published As

Publication number Publication date
JPS5930039B2 (en) 1984-07-24

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