JPS6488116A - Magnetic encoder - Google Patents
Magnetic encoderInfo
- Publication number
- JPS6488116A JPS6488116A JP24365487A JP24365487A JPS6488116A JP S6488116 A JPS6488116 A JP S6488116A JP 24365487 A JP24365487 A JP 24365487A JP 24365487 A JP24365487 A JP 24365487A JP S6488116 A JPS6488116 A JP S6488116A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- element wires
- angle
- equation
- phase
- 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)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE:To measure a fine angle of rotation by measuring the quantity of displacement from the phase difference between an applied AC signal and an AC signal generated by adding the output of a magneto-resistance element composed of element wires to a position shown by a specific equation while advancing or delaying the output by a specific angle. CONSTITUTION:The contents of a ROM 33 are read out by an oscillator 31 and a counter 32 and converted by a DA converter 34 into an AC signal, which is applied to N element wires 36-1-36-4 of the magneto-resistance element provided at a position shown by the equation I (where K is an integer between 1 and N, lambda is magnetic pole width, and theta0 is an optional reference position). The element wires 36-1-36-4 form a voltage dividing circuit with fixed resistors 371--37-4 and a neutral potential varies with the resistances and applied voltages of the element wires 36-1-36-4; and a shift in phase is made by an angle shown by an equation II and addition is performed to generate the AC signal which shifts in phase from a source signal by the angle of rotation. Then the phase difference from the AC signal applied to the respective element wires 36-1-36-5 is measured to measure the displacement quantity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24365487A JPS6488116A (en) | 1987-09-30 | 1987-09-30 | Magnetic encoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24365487A JPS6488116A (en) | 1987-09-30 | 1987-09-30 | Magnetic encoder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6488116A true JPS6488116A (en) | 1989-04-03 |
Family
ID=17107027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24365487A Pending JPS6488116A (en) | 1987-09-30 | 1987-09-30 | Magnetic encoder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488116A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011059103A (en) * | 2009-08-11 | 2011-03-24 | Asahi Kasei Electronics Co Ltd | Rotational angle detector, position detector, and detection method of the same |
-
1987
- 1987-09-30 JP JP24365487A patent/JPS6488116A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011059103A (en) * | 2009-08-11 | 2011-03-24 | Asahi Kasei Electronics Co Ltd | Rotational angle detector, position detector, and detection method of the same |
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