JPS6480817A - Abnormality detecting device for sine wave encoder - Google Patents
Abnormality detecting device for sine wave encoderInfo
- Publication number
- JPS6480817A JPS6480817A JP23937387A JP23937387A JPS6480817A JP S6480817 A JPS6480817 A JP S6480817A JP 23937387 A JP23937387 A JP 23937387A JP 23937387 A JP23937387 A JP 23937387A JP S6480817 A JPS6480817 A JP S6480817A
- Authority
- JP
- Japan
- Prior art keywords
- sine wave
- encoder
- signal
- wave encoder
- detecting device
- 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
- Transmission And Conversion Of Sensor Element Output (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To detect abnormality of the sine wave encoder by finding the sum of squares of a 1st sine wave signal and a 2nd sine wave signal having pi/2 phase difference from the 1st one outputted by the encoder. CONSTITUTION:The sine wave encoder 10 which is coupled with a motor 9 generates the 1st sine wave signal and the 2nd signal which has pi/2 phase difference from the 1st signal. Those signals are inputted to a microcomputer 5 through comparators 13 and 14, a four-multiplying circuit 3, and an up/down counter 4, and further sample holding circuit 15 and 16, an analog switch 17, and an A/D converter 18. This microcomputer 5 calculates the rotating speed and rotational angle of the motor 9 from the integral value of the up/down counter 4, calculates the sum of squares of the two signals from the A/D converter 18, and detects abnormality of the sine wave encoder 10 when the arithmetic result deviates from a range close to a positive number '1'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23937387A JPS6480817A (en) | 1987-09-24 | 1987-09-24 | Abnormality detecting device for sine wave encoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23937387A JPS6480817A (en) | 1987-09-24 | 1987-09-24 | Abnormality detecting device for sine wave encoder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6480817A true JPS6480817A (en) | 1989-03-27 |
Family
ID=17043808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23937387A Pending JPS6480817A (en) | 1987-09-24 | 1987-09-24 | Abnormality detecting device for sine wave encoder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6480817A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002090183A (en) * | 2000-09-14 | 2002-03-27 | Samutaku Kk | Multi-rotation type absolute value encoder |
JP2014199182A (en) * | 2013-03-29 | 2014-10-23 | Tdk株式会社 | Magnetic sensor system |
-
1987
- 1987-09-24 JP JP23937387A patent/JPS6480817A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002090183A (en) * | 2000-09-14 | 2002-03-27 | Samutaku Kk | Multi-rotation type absolute value encoder |
JP2014199182A (en) * | 2013-03-29 | 2014-10-23 | Tdk株式会社 | Magnetic sensor system |
US9297635B2 (en) | 2013-03-29 | 2016-03-29 | Tdk Corporation | Magnetic sensor system including two detection circuits |
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