A dynamic error index evaluation method for inertial devices based on high dynamic centrifuge

By designing the dynamic error index evaluation method of inertial devices on a high dynamic centrifuge, using the overall standard deviation of overload value and the absolute error calculation of time domain, the lack of dynamic error evaluation of inertial devices in a high dynamic environment is solved, and dynamics of inertial devices are realized Effective evaluation of errors and improvement of accuracy.

CN114964312BActive Publication Date: 2024-12-24GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS
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Patent Information

Application Number
CN202210540511.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-05-17
Publication Date
2024-12-24
Estimated Expiration
2042-05-17

AI Technical Summary

Technical Problem

The existing high-dynamic centrifuge lacks appropriate inspection indicators and evaluation methods in the dynamic error calibration of inertial devices, and cannot effectively improve the accuracy of inertial devices in high-dynamic overload environments.

Method used

A method for evaluating dynamic error index of inertial devices based on high dynamic centrifuge is designed. By calculating the overall standard deviation of overload value and the absolute error of overload value time domain, combined with the dual-axis overload and high-precision output of high dynamic centrifuge, the inertial devices are realized. Specific evaluation of dynamic errors.

Benefits of technology

It provides suitable dynamic error verification indicators and calculation methods for inertial devices under dynamic overload conditions, solves the problem of no relevant quantization indicators in the existing technology, realizes the credibility evaluation of the dynamic error of inertial devices, and improves the inertial devices. Accuracy in high dynamic environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a method for evaluating the dynamic error index of an inertial device based on a high-dynamic centrifuge, belonging to the technical field of inertial devices. Based on the dynamic overload characteristics of the inertial device, the overall standard deviation of the overload value, which reflects the average deviation degree of the overload measurement result of the inertial device relative to the target overload curve, and the absolute error in the time domain of the overload value, which reflects the maximum deviation amplitude of the overload value measurement result of the inertial device relative to the target overload value, are designed as the inspection index of the dynamic error of the inertial device. Based on the overload output principle of the high-dynamic centrifuge, the calculation method of the dynamic error of the inertial device and the quantitative evaluation method of the index are constructed after considering the deviation of the centrifuge main shaft and slave shaft angle measurement, speed measurement, and angular acceleration measurement, as well as the centrifuge working radius measurement deviation, the inertial device installation eccentricity measurement error and other factors.
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