Outer rotor axial magnetic circuit reluctance type rotary transformer with multiple pairs of poles for space manipulator

Abstract

The invention provides an outer rotor axial magnetic circuit reluctance type rotary transformer with multiple pairs of poles for a space manipulator. An equivalent air gap is arranged between a stator and a rotor; and a wavy magnetic conduction material is arranged at the middle part of the rotor, P wave crests and P wave troughs are distributed on the magnetic conduction material along the circumferential direction of the rotor, non-magnetic conduction materials are arranged at the two end parts of the rotor, 4NP tooth grooves are axially formed on the outer surface of the stator, a through groove is formed in the circumferential direction, 4NP pairs of upper teeth and lower teeth are further formed on the outer surface of the stator, every adjacent N upper teeth and the corresponding N lower teeth sequentially form one group of winding teeth, and the outer rotor axial magnetic circuit reluctance type rotary transformer has 4P groups of the winding teeth in total. According to the outer rotor axial magnetic circuit reluctance type rotary transformer provided by the invention, the wavy magnetic conduction material and the vertical winding way of an excitation winding and signal windings are adopted, thus induced electromotive force of the two phases of the signal windings can change according sine and cosine laws, and a constant component in an electromotive force waveform is weakened; and the axial magnetic circuit structure is adopted, thus the volume is reduced, and the load performance of the rotary transformer is also improved.

Description

technical field [0001] The invention relates to an outer rotor axial magnetic circuit multi-pole reluctance rotary transformer for a space manipulator, and belongs to the technical field of rotary transformers. Background technique [0002] The space manipulator works in a space environment, and conditions such as vibration, high precision, and volume and weight are demanding. The existing rotary transformers have developed from contact rotary transformers to rotary transformers with coupling transformers, and then to vernier rotary transformers. Although brushless has been gradually realized, the structure is still relatively complicated and the error is large, which is not conducive to high-precision measurement. . The existing reluctance rotary transformer further simplifies the structure, and generally uses a variable air gap between the stator and the rotor to realize the reluctance change, so that the potential amplitude of the output signal changes. When the air gap...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of increasing the air gap caused by the variable reluctance design of the existing reluctance rotary tr...

Images