Method for constructing belt-shaped tethered satellite release kinetic model

Abstract

The invention discloses a method for constructing a belt-shaped tethered satellite release kinetic model, relates to the field of spacecraft control, can accurately describe complex configuration changes of the space band-shaped tether in the release process, effectively reveals the influence of the band-shaped tether with different bending stiffness on system dynamics, and accurately reflects theconfiguration changes of the band-shaped tether in the release process. The present invention comprises: a constraint equation used for uniformly dispersing the space band-shaped tether into a plurality of rigid body units, establishing a kinetic equation of a single rigid body unit and a constraint equation between the rigid body units, wherein the release length of the tether is continuously changed according to the release stage; constraint equations among rigid body units are divided into three classes of constraints between units which are not released in the main satellite, constraintsbetween rigid body units which are released and previous units, and constraints between released units, and then according to a constraint equation between the rigid body units in the releasing process, a dynamic equation of the releasing process of the belt-shaped tethered satellite system is obtained through final derivation.

Description

Technical field [0001] The invention relates to the field of spacecraft control, and in particular to a method for constructing a release dynamics model of a ribbon tethered satellite. Background technique [0002] The space ribbon tethered satellite is different from the traditional tethered satellite system. It is composed of a ribbon metal rope with a width far greater than its thickness, a certain bending moment and torque, and a connection function, an on-orbit spacecraft and a terminal load. The ribbon tethered satellite greatly improves the space survival rate of the system. At the same time, it has a wide range of applications in the fields of space exploration, satellite maneuvering, and space junk cleaning. It is worth noting that due to the complexity of the system model, Masakazu et al. studied the dynamic characteristics of ribbon tethers considering bending and torsion, and used numerical calculations to study the nonlinear behavior of ribbon tethers. Sanmartín et ...

AI Technical Summary

Problems solved by technology

[0003] Through the discussion of the previous research results, it can be found that researchers in western developed countries have paid attention to the importance of the ribbon-tethered satellite system, but the dynamic modeling of the system is not mature enough to truly reveal the dynamic phenomena of the system

In particular, it is impossible to accurately describe the configuration changes during the release process of the space ribbon tether

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