Position measuring device with a phase adjust circuit and...

Details Position measuring device with a phase adjust circuit and... Position measuring device with a phase adjust circuit and...

G - Physics

08

C

340/135, 333/29,

G08C 21/00 (2006.01) G01D 5/244 (2006.01)

Patent

CA 2040190

380-90-005 POSITION MEASURING DEVICE WITH A PHASE ADJUST CIRCUIT AND PROCESS FOR PHASE ADJUSTMENT ABSTRACT A position measuring device with a phase adjust circuit and phase adjust circuit process in which errors in the phase relationship between a pair of nominally 0° and 90° phase related quadrature signals may be corrected, by deriving a correction signal comprised of a selectively scaled and signed form of the 0° signal and vectorially adding the correction signal to the 90° signal. The circuit allows for electronic correction of the skew angle of a reading head grating in an optical type distance transducer. (FIGURE 2)

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