Patent ID: 6754610
Filing Date: 2004-06-22
Classification: G01D,H03M

Abstract:
An apparatus for measuring angular position of a rotor, comprising:a resolver having a rotor, and having a first output for outputting a first signal representative of the sine of the rotor angle and a second output for outputting a second signal representative of the cosine of the rotor angle; an analog to digital converter having an input coupled to said first and second outputs of said resolver, and having a output; a digital signal processor having an input coupled to said output of said analog to digital converter, and wherein said digital signal processor repeatedly samples said output of said analog to digital converter and accumulates a plurality of data points representative of the output signal present on said first and second outputs of said resolver, and wherein said digital signal processor calculates the rotor angle by averaging a plurality of resultant values derived from said plurality of data points.