Common excitation coarse-fine coupling radial magnetic resistance type rotary transformer

Abstract

The invention provides a common excitation coarse-fine coupling radial magnetic resistance type rotary transformer, belonging to the technical field of rotary transformers. A rotor of the transformer is of a radial salient pole structure, and radial salient poles are distributed in a wavy form along the external circle of the rotor in the peripheral direction; the inner side of a stator is axially provided with 4P stator teeth and 4P slots, wherein P is an integer and is more than or equal to 2; excitation windings are arranged on the 4P stator teeth and in the 4P slots; signal windings comprise fine signal windings and coarse signal windings, the fine signal windings comprise a first fine signal winding and a second fine signal winding, and the coarse signal windings comprise a first coarse signal winding and a second coarse signal winding. The magnetic resistance type rotary transformer with the radial magnetic path resistance variable structure is high in mechanical strength, does not need compensation windings or helical teeth, can provide absolute position information and high-precision relative position information simultaneously by virtue of the structure specificity, and can eliminate errors caused by installation eccentricity furthest.

Description

technical field [0001] The invention relates to a co-excitation coarse-fine coupling radial reluctance rotary transformer, which belongs to the technical field of rotary transformers. Background technique [0002] Traditional resolvers include contact resolvers, resolvers with coupling transformers, and vernier resolvers. Although the traditional rotary transformer has been gradually realized brushless, its structure is still relatively complicated, and its error is large, which is not conducive to high-precision measurement. Contents of the invention [0003] The purpose of the present invention is to solve the existing problems in the prior art, that is, although the traditional rotary transformer gradually realizes the brushless, the structure is still relatively complicated and the error is large, which is not conducive to high-precision measurement. Furthermore, a co-excitation coarse-fine coupling radial reluctance rotary transformer is provided. [0004] The...

AI Technical Summary

Problems solved by technology

Although the traditional resolver has gradually realized brushless, its structure is still relatively complicated, and the error is large, which is not conducive to high-precision measurement

Images