JPS5475516A - Speed limit device of electric motor - Google Patents
Speed limit device of electric motorInfo
- Publication number
- JPS5475516A JPS5475516A JP14278577A JP14278577A JPS5475516A JP S5475516 A JPS5475516 A JP S5475516A JP 14278577 A JP14278577 A JP 14278577A JP 14278577 A JP14278577 A JP 14278577A JP S5475516 A JPS5475516 A JP S5475516A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- pulse generator
- deviation
- electric motor
- counts
- 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
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE: To improve capacity of speed control, by counting output pulse row of revolving position pulse generator with two counters whose counting times are different, improving responsibility with one side counter and improving accuracy with another counter.
CONSTITUTION: Output of revolving position pulse generator 2 which is connected to an motor 1 is input to the first counter 7 which counts in each constant time T1 by reset pulse of pulse generator 8 and the second counter 6 which counts in each constant time T2 which is greater than T1, these outputs are take difference between velocity instruction through A-D converters 9, 10, are connected to switching circuit 15 which is switched in zero deviation detecting circuit 16, and operates the electric motor 1. Therefore, when deviation is big, sampling period whose speed feedback amount is small controls high speed response, and when deviation is small, sampling period is made to be longer, and high accuracy speed control can be done.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14278577A JPS5475516A (en) | 1977-11-30 | 1977-11-30 | Speed limit device of electric motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14278577A JPS5475516A (en) | 1977-11-30 | 1977-11-30 | Speed limit device of electric motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5475516A true JPS5475516A (en) | 1979-06-16 |
Family
ID=15323536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14278577A Pending JPS5475516A (en) | 1977-11-30 | 1977-11-30 | Speed limit device of electric motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5475516A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5972891U (en) * | 1982-11-05 | 1984-05-17 | 三菱電機株式会社 | Electric motor speed control device |
-
1977
- 1977-11-30 JP JP14278577A patent/JPS5475516A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5972891U (en) * | 1982-11-05 | 1984-05-17 | 三菱電機株式会社 | Electric motor speed control device |
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