Electricity: measuring and testing – Magnetic – Displacement
Patent
1990-07-13
1991-11-12
Wieder, Kenneth A.
Electricity: measuring and testing
Magnetic
Displacement
324225, G01B 714, G01B 730
Patent
active
050650955
ABSTRACT:
A position detecting apparatus detects the position of an object and includes a sensor device which outputs first and second AC detection signals which have a predetermined phase relationship and which correspond to a detected position of the object. An instantaneous value detecting unit detects and outputs instantaneous values of the first and second AC detection signals. A DC component detecting unit processes the instantaneous values to obtain first and second DC components of the first and second AC detection signals, respectively. A position calculating section calculates the position of the object based on a difference between the first DC component and the first AC detection signal, and a difference between the second DC component and the second AC detection signal.
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Edmonds W. S.
Kabushiki Kaisha Okuma Tekkosho
Wieder Kenneth A.
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