Multi-redundancy dual-channel non-contact rotary transformer

Abstract

A multi-redundancy dual-channel non-contact rotary transformer comprises a dual-redundancy ring transformer, a first dual-channel rotary transformer and a second dual-channel rotary transformer. A first ring transformer body and a second ring transformer body share the same iron core and have the same winding parameters completely; the multi-redundancy dual-channel non-contact rotary transformer is of a split magnetic path structure, a magnetic path of the first dual-channel rotary transformer is impendent from a magnetic path of the second dual-channel rotary transformer, and the single-pole dual-channel rotary transformer and the multiple-pole dual-channel rotary transformer are of a common magnetic path structure; two lead wires are led out of each of the input point, the output point and the earth point of the multi-redundancy dual-channel non-contact rotary transformer and connected with two electric connectors. According to the multi-redundancy dual-channel non-contact rotary transformer, the single-pole rotary transformer and the multiple-pole rotary transformer are combined, non-contact is achieved, multiple redundancies are achieved by adopting the dual-redundancy structural form, the dual-redundancy magnetic path form and the dual-redundancy circuit form, reliability of the multi-redundancy dual-channel non-contact rotary transformer is improved to a greater degree, the service life of the multi-redundancy dual-channel non-contact rotary transformer is prolonged to a greater degree, the failure rate of a system is reduced greatly, reliability of the system is improved greatly, angle measuring precision of the system is improved, and the service life of the system is prolonged.

Description

technical field [0001] The invention relates to a non-contact rotary transformer, in particular to a high-reliability, high-precision redundant dual-channel non-contact rotary transformer. Background technique [0002] The resolver is a kind of angular position sensing motor that works according to the principle of electromagnetic induction. When a certain AC voltage is applied to the input winding, during the rotation of the motor, the input winding and the output winding will change the turns between them due to the relative position change. As the linkage flux changes, an output voltage that is a function of the rotor angle will be generated on the output winding. The most widely used is the sine-cosine resolver whose output voltage has a sine-cosine function relationship with the rotor angle. [0003] The early resolver was a pair of pole products, and the product accuracy was tens of arc minutes, which could not meet the product accuracy requirements of several arc min...

AI Technical Summary

Problems solved by technology

[0004] The brushes and slip rings used to transmit signals in the traditional resolver are the weakest link in reliability, the service life is not high, and radio interference will be generated, which greatly limits the working life and reliability of the system, and the design adopts Reasonable brushless technology eliminates contact links such as brushes and collector rings, which can double the reliability and life of the resolver, eliminate interference to other devices, and improve system reliability. Brushed resolvers will occupy an increasingly important position

Images