JPS568553A - Automatic switching device for input signal of pulse generator - Google Patents
Automatic switching device for input signal of pulse generatorInfo
- Publication number
- JPS568553A JPS568553A JP8472379A JP8472379A JPS568553A JP S568553 A JPS568553 A JP S568553A JP 8472379 A JP8472379 A JP 8472379A JP 8472379 A JP8472379 A JP 8472379A JP S568553 A JPS568553 A JP S568553A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- generator
- output voltage
- measuring
- 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
Links
Landscapes
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE: To increase the measuring accuracy over the entire measuring range, by securing the automatic switching between the two pulse generators having different generating coefficients after detecting their revolving speeds.
CONSTITUTION: The output voltage of comparator 6 is turned to the zero voltage from the constant voltage if the pulse duration is long enough for the time during which the output voltage of low-speed range measuring pulse generator 2 is at a certain level. When the time elapses and the output voltage of generator 2 lowers down to the zero voltage with the output voltage of comparator 6 kept at the zero level, the output of flip-flop FF8 selects high-speed range measuring pulse generator 1. In case the pulse duration of generator 2 is short, the output voltage of comparator 6 is kept at a certain level. And the output of FF8 selects generator 2. Here the voltage of the external control input terminal is changed to the zero level from a certain level, and thus the control input of FF8 is locked with the output kept as it is. Accordingly, the measuring accuracy can be increased over the entire measuring range.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54084723A JPS5938546B2 (en) | 1979-07-03 | 1979-07-03 | Pulse generator input signal automatic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54084723A JPS5938546B2 (en) | 1979-07-03 | 1979-07-03 | Pulse generator input signal automatic switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS568553A true JPS568553A (en) | 1981-01-28 |
| JPS5938546B2 JPS5938546B2 (en) | 1984-09-18 |
Family
ID=13838595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54084723A Expired JPS5938546B2 (en) | 1979-07-03 | 1979-07-03 | Pulse generator input signal automatic switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5938546B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967458A (en) * | 1982-10-12 | 1984-04-17 | Mitsubishi Electric Corp | Digital speed detection system |
| JPS60169709A (en) * | 1984-02-13 | 1985-09-03 | Tokyo Seimitsu Co Ltd | Scale reading and counting device |
| JPS63253886A (en) * | 1987-04-08 | 1988-10-20 | Fanuc Ltd | Rotational speed controller for motor |
-
1979
- 1979-07-03 JP JP54084723A patent/JPS5938546B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967458A (en) * | 1982-10-12 | 1984-04-17 | Mitsubishi Electric Corp | Digital speed detection system |
| JPH0565827B2 (en) * | 1982-10-12 | 1993-09-20 | Mitsubishi Electric Corp | |
| JPS60169709A (en) * | 1984-02-13 | 1985-09-03 | Tokyo Seimitsu Co Ltd | Scale reading and counting device |
| JPH0477842B2 (en) * | 1984-02-13 | 1992-12-09 | Tokyo Seimitsu Co Ltd | |
| JPS63253886A (en) * | 1987-04-08 | 1988-10-20 | Fanuc Ltd | Rotational speed controller for motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5938546B2 (en) | 1984-09-18 |
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