Patent ID: 7268537
Filing Date: 2007-09-11
Classification: G01D

Abstract:
1. A rotation angle detection device comprising: a stator provided with a one-phase excitation winding and two-phase output windings; and a rotor having salient poles, wherein the two-phase output windings are wound around a plurality of teeth of the stator, and respective numbers of turns of the two-phase output windings are obtained by using m-phase windings, where m is an integer of 3 or more, the m-phase windings being defined in advance to convert the numbers of turns of the m-phase windings into those of two-phase windings, wherein, when the number of teeth of the stator is an odd number, a winding pattern of the excitation winding is a pattern repeated by a number which is the same as a value of a divisor of the number of teeth.