Patent ID: 6512589
Filing Date: 2003-01-28
Classification: G01D

Abstract:
A method for measuring a position of a sensing head with respect to a scale embodiment, the method which comprises:providing a sensing head including at least one sensor; providing a scale embodiment including a linear code; obtaining, with at least a given resolution, an absolute value of an initial position of the scale embodiment with respect to the sensing head; moving the sensing head and the scale embodiment relative to one another for deriving sensor signals of a relative movement from the linear code; and measuring, with the given resolution, a position of the scale embodiment with respect to the sensing head by obtaining information from a first number of the sensor signals of the relative movement, the first number of the sensor signals of the relative movement being smaller than a second number of sensor signals required for a position measurement with the given resolution at a relative speed of zero of the scale embodiment with respect to the sensing head.