Satellite high-precision centroid measurement method combined with laser tracker

Abstract

The invention discloses a satellite high-precision centroid measurement method combined with a laser tracker, and the method comprises the steps: obtaining the centroid position I1 of a combination ofa satellite and a centroid measurement tool in a centroid measurement platform coordinate system in a vertical state of the satellite through the measurement of a centroid measurement platform duringthe measurement of the transverse centroid of the satellite; using the mass center position of the no-load mass measurement tool in the vertical state to obtain the transverse mass center of the satellite through calculation; when satellite longitudinal centroid measurement is carried out, the centroid position I5 of a combination of a satellite and a quality measurement tool in a horizontal state under a quality measurement table coordinate system is obtained through measurement of a quality measurement table, and the satellite longitudinal centroid is obtained through calculation in combination with the centroid position of the no-load quality measurement tool in the horizontal state. By means of the method, the satellite installation error and the tool deformation error are reduced, and the measurement precision of the satellite mass center is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of satellite centroid measurement, in particular to a satellite high-precision centroid measurement method combined with a laser tracker. Background technique [0002] With the rapid development of the aerospace field in the world, countries are paying more and more attention to the measurement of spacecraft quality characteristic parameters, and the measurement accuracy of quality characteristics is also getting higher and higher. The measurement of quality characteristics of spacecraft is an important link in the process of spacecraft assembly integration and testing (AIT), which has a crucial impact on the launch, orbit entry and on-orbit operation of launch vehicles and spacecraft. For gravity gradient test satellites and gravitational wave measurement test satellites, the measurement results of the center of mass of the whole star directly affect the success or failure of the model mission, so relevant ...

AI Technical Summary

Problems solved by technology

However, machining and positioning errors cannot be completely eliminated. For high-precision centroid measurement, this error still has an important impact on centroid measurement

[0006] (2) Regarding the measurement error of the center of mass, when measuring the longitudinal center of mass of the satellite, the researchers often overcome the tooling deformation error caused by the horizontal installation of the satellite on the L-shaped flip bracket by improving the machining accuracy, and do not consider the use of relevant precision measurements in the process of measuring the center of mass Technology to eliminate tooling manufacturing errors and tooling deformation errors

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