JPS55112570A - Position detector - Google Patents
Position detectorInfo
- Publication number
- JPS55112570A JPS55112570A JP2036079A JP2036079A JPS55112570A JP S55112570 A JPS55112570 A JP S55112570A JP 2036079 A JP2036079 A JP 2036079A JP 2036079 A JP2036079 A JP 2036079A JP S55112570 A JPS55112570 A JP S55112570A
- Authority
- JP
- Japan
- Prior art keywords
- outputs
- luminous
- luminous element
- elements
- taken out
- 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
Abstract
PURPOSE: To make it possible to cancel fluctuation of a temperature, etc., by not only preventing a signal from being broken even for low-speed operations but also controlling the light quantity of a luminous element by synthesizing electrically a speed signal from position detection pulses.
CONSTITUTION: Luminous elements 3W5 and light receiving elements 6W9 are provided with slit disc 1 interposed, and outputs A and B of an approximate sine waveform, which are different in phase from detection outputs of light receiving elements 6W9 by π, and outputs of an approximate sine waveform, which are different in phase from outputs A and B by π/2, are taken out. Outputs of these differential amplifiers 13W16 are differentiated by 18, and parts near the maximum value of respective sine wave outputs are taken out successively by π/2 by analogue switch 19 which is controlled by analogue switch control circuit 20, and the parts above are added to obtain a speed signal. Luminous element 10 detects the light quantity of luminous element 5 to control currents of luminous elements 3W5 by 12.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2036079A JPS55112570A (en) | 1979-02-21 | 1979-02-21 | Position detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2036079A JPS55112570A (en) | 1979-02-21 | 1979-02-21 | Position detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55112570A true JPS55112570A (en) | 1980-08-30 |
Family
ID=12024921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2036079A Pending JPS55112570A (en) | 1979-02-21 | 1979-02-21 | Position detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112570A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5780562A (en) * | 1980-11-10 | 1982-05-20 | Fuji Electric Co Ltd | Phase detecting binarizing device |
JPS59122909A (en) * | 1982-12-29 | 1984-07-16 | Mitsubishi Electric Corp | Rotary phase detector |
JPS59210322A (en) * | 1984-03-24 | 1984-11-29 | Canon Inc | Photoelectric position detection system |
-
1979
- 1979-02-21 JP JP2036079A patent/JPS55112570A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5780562A (en) * | 1980-11-10 | 1982-05-20 | Fuji Electric Co Ltd | Phase detecting binarizing device |
JPS59122909A (en) * | 1982-12-29 | 1984-07-16 | Mitsubishi Electric Corp | Rotary phase detector |
JPS59210322A (en) * | 1984-03-24 | 1984-11-29 | Canon Inc | Photoelectric position detection system |
JPH0445763B2 (en) * | 1984-03-24 | 1992-07-27 | Canon Kk |
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