Apparatus and method for generating two-phase signals for use with a resolver to digital converter.

摘要

Two-phase voltage signals Vx, Vy for use with a resolver-to-digital converter (RDC) are produced as a periodic function of permeance developed across an air gap between a rotor 44 and stator 26 wherein the permeance varies as a periodic sinusoidal function which can be related to the electrical angle of the position of the rotor. The two-phase voltage signals are developed as a function of inductive reactance and follow the form <MATH> wherein the phase angle between Vx and Vy is exactly 90 DEG and the term [A+An + B+Bn] is completely free of second harmonics.