High-pressure composite material gas cylinder dynamic load high-precision centroid measurement method

Abstract

The invention provides a high-pressure composite material gas cylinder dynamic load high-precision centroid measurement method. Through the method, the centroid of a gas cylinder which expands when pressurized and contracts when decompressed can be precisely positioned, and data support and measure guarantee are provided for ensuring high-speed shooting and stable running of a system. According tothe high-pressure composite material gas cylinder dynamic load high-precision centroid measurement method, firstly, a three-point mass measurement method is utilized to position the centroid of the gas cylinder, namely the actual centroid of the composite material high-pressure gas cylinder of an asymmetric irregular cubic structure; and secondly, a gradient pressurization and gradient decompression centroid measurement mode is utilized to realize centroid skewing caused by an expansion deformation and a contraction deformation under the action of a dynamic load, and the centroid of the gas cylinder which expands when pressurized and contracts when decompressed is precisely positioned. Through the method, a high-precision measurement technology for solving the current problem of centroidfollow-up caused by a large deformation of the high-pressure composite material gas cylinder under the action of the dynamic load is realized, and therefore smooth flight of the satellite system is ensured.

Description

technical field [0001] The invention belongs to the technical field of centroid measurement, and in particular relates to a high-precision centroid measurement method under dynamic load of a high-pressure composite gas cylinder. Background technique [0002] In order to ensure that the small satellite system can supply gas during high-speed operation and fly stably without being affected by the deviation of the center of mass caused by the gas flow, the ultra-static and ultra-stable small satellite system platform is adopted. The system requires extremely high control of the center of mass of the composite gas cylinder during high-speed operation. High, it is required that no matter whether the gas cylinder is in a static state or a continuous gas supply state, the position of the center of mass should be kept within a small range to prevent system instability caused by a large deviation of the center of mass. On the one hand, the structure of the gas cylinder is an asymmetri...

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Problems solved by technology

In addition, for the measurement of high-pressure and high-risk gas cylinders, explosions may occur and there are hidden dangers. Personnel safety must be ensured while measuring

[0004] At present, there is no domestic measurement method specifically for the change of the center of mass of high-pressure composite gas cylinders under dynamic load conditions.

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