JPS5775585A - Motor speed control system - Google Patents

Motor speed control system

Info

Publication number
JPS5775585A
JPS5775585A JP55150059A JP15005980A JPS5775585A JP S5775585 A JPS5775585 A JP S5775585A JP 55150059 A JP55150059 A JP 55150059A JP 15005980 A JP15005980 A JP 15005980A JP S5775585 A JPS5775585 A JP S5775585A
Authority
JP
Japan
Prior art keywords
time
output signal
error amplifier
firing
firing phase
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
JP55150059A
Other languages
Japanese (ja)
Other versions
JPS6223551B2 (en
Inventor
Katsuo Kobari
Keiji Sakamoto
Shinji Seki
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 JP55150059A priority Critical patent/JPS5775585A/en
Publication of JPS5775585A publication Critical patent/JPS5775585A/en
Publication of JPS6223551B2 publication Critical patent/JPS6223551B2/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
    • H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To suppress excessive current in addition to the time shortcircuit at the switching time by clampling the firing phase at a predetermined time when the output signal of an error amplifier is code converted. CONSTITUTION:When a speed command S1 is switched from positive to negative, the output signal S3 of an adder 41 is inverted, and the output signal of an error amplifier 42 is also inverted. Thus, an output signal S5 is not delivered from a code discriminator 44 during a predetermined period of time, thereby inhibiting the firing of a thyristor. Simultaneously, an absolute value limiter 48 is operated by a clamping command signal S10 during the time of this time plus the predetermined period of time. An absolute value circuit 43 is operated by the operation of the limiter 48, the output of the circuit 43 and hence the firing phase is limited to the limiting value alpha0 determined in response to the rotating speed of the motor 1, and accordingly the firing phase does not exceed alpha0 even when the output signal S4 of an error amplifier 42 is increased.
JP55150059A 1980-10-28 1980-10-28 Motor speed control system Granted JPS5775585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150059A JPS5775585A (en) 1980-10-28 1980-10-28 Motor speed control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150059A JPS5775585A (en) 1980-10-28 1980-10-28 Motor speed control system

Publications (2)

Publication Number Publication Date
JPS5775585A true JPS5775585A (en) 1982-05-12
JPS6223551B2 JPS6223551B2 (en) 1987-05-23

Family

ID=15488605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150059A Granted JPS5775585A (en) 1980-10-28 1980-10-28 Motor speed control system

Country Status (1)

Country Link
JP (1) JPS5775585A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4828914A (en) * 1971-08-20 1973-04-17
JPS5574389A (en) * 1978-11-27 1980-06-04 Fanuc Ltd Drive circuit for permanent magnet type dc motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4828914A (en) * 1971-08-20 1973-04-17
JPS5574389A (en) * 1978-11-27 1980-06-04 Fanuc Ltd Drive circuit for permanent magnet type dc motor

Also Published As

Publication number Publication date
JPS6223551B2 (en) 1987-05-23

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