Calibration compensation method for rotating transformer angle observation error based on velocity rotating platform

Abstract

A calibration compensation method of angle-measurement error of a rotating transformer based on a rate rotary table; the calibration method obtains the dynamic continuous output of the rotating transformer through a dynamic calibration test of a digital calibration system, so as to calibrate the cycle error term coefficient of the rotating transformer; calibrates the one degree term and zero degree term errors of the rotating transformer through a static calibration test; completes precise error calibration of the rotating transformer through the dynamic and the static tests; and later, builds a model to compensate the calibrated rotary error. The invention integrates the advantages of the dynamic and the static calibration methods, is not restricted by precision of an angle measuring device, is easy and simple; the built error compensation model of the rotating transformer greatly improves the angle-measuring precision of the rotating transformer. The method is also applicable in calibration and compensation of all other shaft angle sensors as well as the angle-measuring precision.

Description

technical field [0001] The invention relates to a method for calibrating and compensating the angle measuring error of a resolver, which is also suitable for calibrating and compensating other various shaft angle sensors, and can greatly improve the angle measuring precision. Background technique [0002] As a shaft angle sensor, the resolver is used in various fields, especially in occasions that require relatively high accuracy of angle measurement. However, due to the limitation of the manufacturing process, there are a series of problems, such as the eccentric installation of the resolver stator and rotor and the relative inclination on the installation, as well as the low stiffness of the shaft itself, resulting in a slight bending of the geometric axis of the shaft system, which will produce rotor and stator disks The eccentricity and relative inclination of the resolver, and the internal winding harmonics of the resolver, the saturation of the magnetic circuit, the cr...

AI Technical Summary

Problems solved by technology

The original calibration method adopts the static position calibration test, which can obtain the absolute error of the resolver, but the test data can only be a limited number of sampling points, intermittent and discontinuous, and cannot describe the short-term change law of the resolver, and the calibration results are not ideal

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