JPS54101120A - Controller for motor - Google Patents
Controller for motorInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4977120A (en) * | 1972-10-30 | 1974-07-25 |
-
1978
- 1978-01-25 JP JP773878A patent/JPS54101120A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4977120A (en) * | 1972-10-30 | 1974-07-25 |
Cited By (1)
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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