Tooth groove matching and winding selection method of small-size rotation transformer

Abstract

The invention provides a tooth groove matching and winding selection method of a small-size rotation transformer. The method comprises the following steps of firstly, determining a stator tooth number and a rotor tooth number, wherein the stator tooth number is 13, and the rotor tooth number is 16; secondly, allowing a stator winding to employ a winding mode with a pitch being 1 under all pole pair numbers, allowing all winding components to be wound around a certain fixed tooth, wherein the components are not crossed and are not intersected, the component number of each phase winding is equal to the groove number, namely, each phase is provided with 13 components, and the turns of each component are distributed according to a set rule; and finally, allowing a rotor winding to employ a folded equal-pitch distributed winding, and determining the corresponding pitch according to the set rule on the condition of different pole pair numbers. By the method, a product with various pole pair numbers, machine winding and automatic manufacturing can be conveniently achieved on the basis of achieving miniaturization.

Description

technical field [0001] The invention relates to the technical field of angle position sensors based on the principle of electromagnetic induction, in particular to a cogging fit and winding selection method of a small-sized rotary transformer. Background technique [0002] In principle, the resolver can be classified as a motor, which belongs to the principle of electromagnetic induction. However, the resolver is not connected with power and torque like a motor, but as a sensing component, it outputs an electrical signal (a two-phase quadrature positive and cosine voltage signal related to the rotation angle) to sense or measure angle. Therefore the accuracy of the signal is very important. In order to improve the accuracy, it is usually achieved through the following aspects: ①Precise machining; ②Selecting a reasonable number of slots for the stator and rotor; The winding coefficient of the wave; ④ Increase the size and increase the number of slots, in order to improve t...

AI Technical Summary

Problems solved by technology

This kind of cogging fit is unreasonable, and it has limitations in terms of the ability to eliminate harmonics and the need to increase the number of pole pairs.

There are too few stator 11 slots, and it is inconvenient to change the number of pole pairs; 20 slots are not capable of eliminating harmonics, and it is not convenient to form pole pairs that are multiples of 2

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