Outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer with redundant winding

The invention discloses an outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer with a redundant winding and relates to the technical field of outer rotor axial magnetic circuit multi-pole reluctance type rotary transformers with redundant windings. The outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer with the redundant winding aims at solving the problem that a current rotary transformer used for measuring angles is complicated in structure and large in error. One end face of a first ring of the outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer is in butt joint with one end face of a second ring, and the other end face of the second ring is in butt joint with one end face of a third ring. The second ring is a magnetism conduction ring in the shape of a sinusoidal waveform, and a first sinusoidal signal winding, a second sinusoidal signal winding, a first cosine signal winding and a second cosine signal winding are arranged on an upper teeth and a lower teeth at intervals in a winding mode. A first exciting winding and a second exciting winding are arranged in a through annular groove in a winding mode. When the outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer rotates to work, the spatial position of the exciting windings and the spatial position of the two signal windings differ by 90 degrees, and therefore the coupling area of the exciting windings and the two signal windings is small, the distributed capacitance is little, the little residual potential is achieved, and therefore errors are reduced.