Automatic test method and device for resolver

Abstract

The invention relates to a rotary transformer automatic testing method and device, and relates to the field of electromagnetic element manufacturing. The automatic test method of the rotary transformer of the present invention efficiently and accurately finds the zero voltage of the stator sinusoidal output by controlling the low-speed rotation of the rotor and fine-tuning the forward and reverse rotations, and intuitively and effectively judges through the range of the zero voltage range and the phase difference The type of problem, by controlling the rotor to rotate at a fixed angle step by step, and after several times of step rotation at a fixed angle, the theoretical peak data set of the stator output voltage is obtained, and the statistical analysis is performed on the theoretical peak data set of the sine and cosine output voltage respectively, and the dispersion coefficient of the data is As a peak voltage consistency indicator, it realizes the quantification of the basis for problem determination and improves the test accuracy.

Description

technical field [0001] The invention provides a rotary transformer automatic testing method and device, which relate to the field of electromagnetic element manufacturing. Background technique [0002] Resolver, referred to as resolver, is a micro-motor for control. It is a measuring device that uses the principle of electromagnetic induction to transform the mechanical rotation angle into an electrical signal that has a certain functional relationship with the rotation angle. Compared with optical encoders, Other position sensing elements such as magnetic encoders have better environmental suitability. The winding of the resolver is extremely complicated, and the stator (rotor) usually contains more than two sets of windings. There are differences in the number of turns of the coil, the position in the slot, and the polarity of the winding, which requires extremely high skill for the operator. The correctness of the winding has an important influence on the performance in...

AI Technical Summary

Problems solved by technology

The two realize the fully automatic test of resolver parameters, but their composition is more complicated, and a computer and large-scale test software are required, which is costly and lacks test flexibility

[0005] Chen Jun's "Computer Test of High-Frequency Dual-Channel Resolver" adopts the method of manually measuring the electrical zero position + automatically determining by computer, reading the mechanical angle and electrical angle position of the test point, and automatically calculating the electrical error to obtain the accuracy of the resolver and realize The automatic reading of angle data is achieved, but the automatic drive of the resolver is not realized, and a high-precision optical dividing head and an advanced dual-channel angular displacement indicator are used, and the cost is relatively high

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