Patent ID: 7340345
Filing Date: 2008-03-04
Classification: G01D

Abstract:
1. A method for evaluating phase signals for determining an angle or a path of a linearly or rotationally displaced component, the method comprising: scanning a number (N) of measured phase values (Δ) at at least one phase sensor arranged on the linearly or rotationally displaced component; transforming mathematically the measured phase values (Δ) into a new range using a linear transformation with a matrix (M determining a quality level (R) by producing a vector (T) followed by the result of a quantization operation (V) regarding the vector (T); producing a further vector (X) from the difference (t) between the vector (T) and the result of the quantization operation (V) after a transformation has been carried out with a further matrix (M calculating a minimum value from the components (x evaluating the phase signals and determining the angle or path of the linearly or rotationally displaced component based on the value of the quality level (R).