Patent ID: 8278915
Filing Date: 2012-10-02
Classification: G01D

Abstract:
1. A variable reluctance resolver signal processing method for minimizing magnetic interference, the method comprising: driving a uni-phase source signal through at, least one capacitive passive element of a resolver, wherein the uni-phase source signal is less than 50,000 hertz, wherein the at least one capacitive passive element is serially connected to each sine and cosine coil winding of the resolver, wherein the driving causes a frequency-dependent reactance phase property of the at least one capacitive passive element on each sine and cosine coil winding of the resolver; phase shifting the resolver rotation current on each sine and cosine coil winding of the resolver by 90 degrees, wherein the frequency of the resolver rotation current is less than a few hundred hertz, wherein the phase shifting consequently reduces magnetic interference by mutual and interactive phase cancelation of induced magnetic flux on each sine and cosine coil winding of the resolver; and outputting a low distortion sine and cosine signal from the resolver.