JPS5496727A - Speed control system of motor - Google Patents
Speed control system of motorInfo
- Publication number
- JPS5496727A JPS5496727A JP305678A JP305678A JPS5496727A JP S5496727 A JPS5496727 A JP S5496727A JP 305678 A JP305678 A JP 305678A JP 305678 A JP305678 A JP 305678A JP S5496727 A JPS5496727 A JP S5496727A
- Authority
- JP
- Japan
- Prior art keywords
- drift
- circuit
- difference
- speed reference
- 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.)
- Pending
Links
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To continue stable speed control operation when the excessive drift of a revolution- indicator generator is generated, by giving an alarm to the outside by detecting the excessive drift while automatically compensating speed reference signals from drift values.
CONSTITUTION: The drift of a revolution-indicator generator 6 is detected by means of drift detecting circuit 9, and speed reference signals are corrected by means of a speed reference correction circuit 10 while an alarm is put out to the outside. The output of a ripple detecting circuit 11 and the output of a ripple reference circuit 12 are compared by means of a comparison circuit 13, and an alarm is put out to the outside when abnormality. When detecting drift, difference between output pulse signals obtained by converting the output voltage of a speed reference set resistor 3 into frequency and the output pulse signals of a pulse oscillator 14 directly connected to a DC generator 5 is detected, difference between reference frequency and feedback frequency is detected by means of a polarity detecting circuit, difference pulse is subtracted at the plus side or the minus side in response to the difference and correction signals corresponding to excessive drift quantity at the plus side or the minus side are given through the speed reference correction circuit 10.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP305678A JPS5496727A (en) | 1978-01-14 | 1978-01-14 | Speed control system of motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP305678A JPS5496727A (en) | 1978-01-14 | 1978-01-14 | Speed control system of motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5496727A true JPS5496727A (en) | 1979-07-31 |
Family
ID=11546658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP305678A Pending JPS5496727A (en) | 1978-01-14 | 1978-01-14 | Speed control system of motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5496727A (en) |
-
1978
- 1978-01-14 JP JP305678A patent/JPS5496727A/en active Pending
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