Double-channel axial magnetic circuit reluctance type rotary transformer

Abstract

The invention provides a double-channel axial magnetic circuit reluctance type rotary transformer. The transformer is characterized in that a fine machine stator exciting winding and a fine machine stator signal winding are wound on a fine machine stator iron core; a coarse machine stator exciting winding and a coarse machine stator signal winding are wound on a coarse machine stator iron core; both the plane where the fine machine stator exciting winding and the fine machine stator signal winding are positioned and the plane where the coarse machine stator exciting winding and the coarse machine stator signal winding are positioned are in an orthogonal state; the exciting magnetic circuit adopts an axial magnetic circuit structure; and uniform air gaps are arranged between the external surface of the rotor and the internal surface of the stator. With the adoption of the rotary double-channel axial reluctance type design, high precision position signals and absolute position signals can be provided; the orthogonal arrangement of the exciting winding and signal winding can be used for controlling the constant component of the rest potential as much as possible; the multi-peak magnetic guiding tape of the rotor adopting an optimal function can be used for ensuring sinusoidal change of the air gap magnetic flux, thereby ensuring the sine function and cosine function requirements that the induction electric potential amplitude value of the two-phase orthogonal signal winding is changed with the change of the position.

Description

technical field [0001] The invention relates to a dual-channel axial magnetic circuit reluctance rotary transformer, which belongs to the technical field of rotary transformers. Background technique [0002] The dual-channel reluctance multi-pole resolver is suitable for high-precision position closed-loop systems because of its high position measurement accuracy, good anti-vibration performance, and strong anti-electromagnetic interference ability, as a closed-loop position and speed sensor. At the same time, the absolute position of the system can be provided. [0003] The multi-pole resolver is used as a high-precision position testing element, and the complementarity of its magnetic circuit structure can offset the measurement error caused by eccentricity and the like. Traditional wire-wound resolver, because its input and output windings are respectively placed on the rotor and stator, in order to achieve brushless, it is necessary to add a coupling transformer, which ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing reluctance rotary transformer has a large air gap, so that the output and input impedances are small, and the load is greatly affected.

At the same time, when the number of pole pairs increases to a certain value, it is necessary to increase the diameter correspondingly, which leads to the problem of increasing the diameter of the resolver, and then provides a dual-channel axial magnetic circuit reluctance resolver

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