Rotating shaft monitoring device suitable for magnetometer and attitude measurement instrument installation matrix calibration

Abstract

The invention provides a rotating shaft monitoring device suitable for magnetometer and attitude measurement instrument installation matrix calibration. The device comprises a support column (1), a laser autocollimator (2), an optical path conversion reflector (3), a portal frame (4), a receiving reflector (5), a connecting rod (6), an attitude measurement instrument (7), a non-magnetic clamp (8),a non-magnetic turntable (9), a mounting platform (10), an attitude measurement instrument electronics box (11), a magnetometer electronics box (12) and a magnetometer (13). According to the invention, active monitoring of the rotation precision of the non-magnetic turntable is realized through the laser autocollimator, and high-precision calibration of the magnetometer and attitude measurement instrument installation matrix is realized through subsequent error compensation. The attitude measurement instrument electronics box, the magnetometer electronics box and the laser autocollimator arearranged far away from the non-magnetic turntable, so that the interference of residual magnetism of the attitude measurement instrument electronics box, the magnetometer electronics box, the laser autocollimator, a background magnetic field and the like is effectively avoided, and a high-precision test environment is guaranteed.

Description

technical field [0001] The invention relates to the technical field of aerospace precision measurement, in particular to a rotating axis monitoring device suitable for calibration of the installation matrix of a magnetometer and an attitude measuring instrument, especially an outdoor calibration suitable for the installation matrix of a magnetometer and an attitude measuring instrument Rotary axis monitoring equipment. Background technique [0002] Geomagnetism is an important part of geophysics and space physics, and it is a bridge connecting solid geophysics and space physics. It is composed of two parts, the basic magnetic field and the changing magnetic field. The basic magnetic field originates from the interior of the earth, and studying its change and origin is one of the important contents of geodynamics research; the changing magnetic field is related to changes in the ionosphere and solar activities. The study of changing magnetic fields is a hot topic in solar-t...

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Problems solved by technology

[0004] Patent ZL201420617200 mentions an eddy current sensor detection method, which overcomes the problem of low precision of traditional contact measurement. CN204052940U mentions a method for detecting the rotation accuracy of a rotating shaft using a capacitive sensor, which has the characteristics of high precision, but the above methods are all It adopts the principle of electromagnetic measurement and is not suitable for outdoor calibration that requires extremely high residual magnetism.

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