Method for realizing high-precision engineering of spherical airbag with position marker

Abstract

The invention discloses a method for realizing high-precision engineering of a spherical airbag with a position marker, which comprises the following steps of: establishing a spherical model by usinga processor, and respectively establishing a Cartesian right-handed coordinate system and a spherical coordinate system on the spherical model by taking the sphere of the spherical model as an original point; establishing a feature point model of the marker on the spherical surface; dividing the spherical model into a plurality of airbag valves with the same characteristics; finding out an airbagvalve with feature points; establishing a airbag valve coordinate system on the airbag valves; solving the longitude opening angle of the feature point relative to the central ridge of the airbag valve and the opening angle of the feature point relative to the XOY surface of the airbag valve coordinate axis; solving a coordinate value of the feature point affine to a airbag valve plane and a airbag valve boundary curve by utilizing the longitude field angle and the field angle of the XOY surface of the feature point relative to the airbag valve coordinate axis through a Gaussian affine transformation formula; and manufacturing the spherical air bag with the position marker by utilizing the airbag valve coordinate system coordinate values of the feature points and the airbag valve boundarycurve.

Description

Technical field [0001] The invention relates to a method for realizing a spherical airbag project. More specifically, it relates to a high-precision engineering realization method of a spherical airbag with position markers. Background technique [0002] Spherical airbags and their derivatives are widely used in aerospace and other scientific research fields due to their simple system, low price and good quality. Aerospace: The Echo series balloon satellites of the United States in the 1960s were the originator of communication satellites. In the 1980s, the No. 2B passive radar calibration balloon satellite of the Second Academy of Aerospace created a precedent in the application research of balloon satellites in my country. The "Atmosphere-1" and "Atmosphere-2" balloon satellites are used for atmospheric density retrieval and detection. In 2019, the BP-1B balloon satellite of BIT aims to carry out solar sail technology verification and radio communication testing. Aviation fiel...

AI Technical Summary

Problems solved by technology

[0004] 1) The method of using 3D modeling software has a large workload and difficult modeling when there are a large number of position markers;

[0005] 2) The method of using instruments for positioning or casting special molds is expensive, and it is difficult to meet the positioning requirements of large and different-scale spherical airbags, and the versatility is poor

And due to the easy shrinkage and expansion of the spherical airbag, the system error is relatively large during positioning

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