Patent ID: 6628038
Filing Date: 2003-09-30
Classification: G01B,G01D,G01P,Y10S

Abstract:
A resolver including a disk-shaped rotor and two disk-shaped stators between which said rotor is placed with air gaps in the axial direction thereof, wherein said rotor is such that a rotor side sheet coil is attached to both sides of a disk-shaped soft magnetic material on which are formed a secondary side pattern of a rotary transformer and a resolver excitation phase pattern, and a stator side sheet coil having a rotary transformer primary side pattern formed on a disk-shaped soft magnetic material is attached to one of said stators opposed to said rotary transformer secondary pattern, and a stator side sheet coil having a resolver detection phase pattern formed on a disk-shaped soft magnetic material is attached to the other of said stators opposed to said resolver excitation phase pattern,wherein said stator side sheet coil is formed of a single sheet composed of a disk having said resolver detection phase pattern formed, a disk having said rotary transformer primary side pattern formed, and a linear portion that links the corresponding two disks with each other.