JPS54101120A - Controller for motor - Google Patents

Controller for motor

Info

Publication number
JPS54101120A
JPS54101120A JP773878A JP773878A JPS54101120A JP S54101120 A JPS54101120 A JP S54101120A JP 773878 A JP773878 A JP 773878A JP 773878 A JP773878 A JP 773878A JP S54101120 A JPS54101120 A JP S54101120A
Authority
JP
Japan
Prior art keywords
motor
pulses
speed
frequency
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.)
Pending
Application number
JP773878A
Other languages
Japanese (ja)
Inventor
Yoshifumi Matsuoka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP773878A priority Critical patent/JPS54101120A/en
Publication of JPS54101120A publication Critical patent/JPS54101120A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stopping Of Electric Motors (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE: To change a driving quantity of the motor in accordance with the difference caused in such manner that, counting a period of detected pulses of the rotational speed in one section with a different reference pulse used, the counted result be compared with a number of pulses of the set rotatinal speed.
CONSTITUTION: If assuming A for a number of the slits in a slit-disc 10, n rotations of a motor 9 at every minute will make a frequency fn of output pulses from an amplifier 13 to be An/60. And if assuming fs for the reference pulse frequency of a frequency divider 3, a number of the reference pulses X in one cycle of the rotational frequency fn of the motor 9 becomes fs/fn = 60fs/An, being a read in a memory circuit 5. With a set rotatinal speed N inputted to an arithmetic circuit 15 from a digital key 14, an operation of Y = 60fs/An is processed with this value set in a memory circuit 16. A subtracter circuit 17 makes an operation of Z = Y - X. If rapidly lowered the set speed, because of becoming N<n, Z>O, an input to a switching circuit 18 becomes positive, with transistors 22, 23 conducted, and the motor 9 is driven in a reverse direction with a brake operation applied.
COPYRIGHT: (C)1979,JPO&Japio
JP773878A 1978-01-25 1978-01-25 Controller for motor Pending JPS54101120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP773878A JPS54101120A (en) 1978-01-25 1978-01-25 Controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP773878A JPS54101120A (en) 1978-01-25 1978-01-25 Controller for motor

Publications (1)

Publication Number Publication Date
JPS54101120A true JPS54101120A (en) 1979-08-09

Family

ID=11674033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP773878A Pending JPS54101120A (en) 1978-01-25 1978-01-25 Controller for motor

Country Status (1)

Country Link
JP (1) JPS54101120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04127899A (en) * 1990-09-18 1992-04-28 Fujitsu Ltd Pulse driving system for dc servo motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977120A (en) * 1972-10-30 1974-07-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977120A (en) * 1972-10-30 1974-07-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04127899A (en) * 1990-09-18 1992-04-28 Fujitsu Ltd Pulse driving system for dc servo motor

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