A method for measuring the axial center of mass of a two-degree-of-freedom gyroscope rotor assembly

Abstract

The invention discloses a method for measuring the axial center of mass of a dual-degree-of-freedom gyroscope rotor assembly, which belongs to the technical field of angular rate sensors, and is characterized in that it comprises the following steps: S1, making the gyroscope in a horizontal posture in an open circuit state, at this time, the gyroscope axis is in contact with the ground The plumb line is parallel, adjust the zero position of the gyro sensor to the minimum; S2, make the gyro open circuit state in the azimuth attitude, at this time, the gyro axis is perpendicular to the ground vertical line, adjust the zero position of the gyro sensor to the minimum for the input current of the gyro torquer, Record the current value at this moment as I X ; S3, the gyro is in a closed-circuit state to measure the axial unbalance of the gyro D(y) y ; S4, establish current value I X and unbalance D(y) y The linear relationship; S5, by measuring the current value I X ;Use the linear relationship to calculate the unbalance D(y) y . The present invention builds a gyro rotor mass center measurement system by means of a gyro test system of a force feedback rebalance circuit, and focuses on the precise measurement of the axial mass center position of a gyro rotor assembly.

Description

technical field [0001] The invention belongs to the technical field of angular rate sensors, in particular to a method for measuring the axial center of mass of a dual-degree-of-freedom gyroscope rotor assembly. Background technique [0002] In the field of inertial navigation and measurement and control technology, centroid measurement is a very important test process. For example, for an aircraft in high-speed motion, when the position of its center of mass is out of tolerance, it will be difficult to adjust its flight direction and attitude, which may easily cause the aircraft to deviate from the track or crash. Therefore, the measurement of the center of mass is of great significance. [0003] The measurement of the center of mass of large objects including rockets, aircraft, missiles and other aircraft, as well as the measurement of the center of mass of small objects including motor rotors, gyro rotors and other parts, all belong to the category of center of mass measu...

AI Technical Summary

Problems solved by technology

[0008] When the weight removal method is used for static balancing, although there is no problem of expansion of the glue on the rotor assembly, it is still often encountered that the static balance is too large, beyond the range that the static balance can remove, and the entire gyro must be disassembled for repair. The strength of the epoxy resin glue is very strong, so it is very easy to cause the gyro-related parts to be scrapped during the disassembly process, so the function of measuring the center of mass is still very important

[0009] Since gyroscopes require precision assembly to obtain high precision, the measurement accuracy of the centroid of the gyroscope rotor assembly needs to reach the micron level, and custom-made special measurement equipment cannot meet the requirements

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