Realization of Modal Excitation Method for On-orbit Solar Array Using Thrusters

Abstract

The invention provides a method using a thruster to realize in-orbit solar array modal excitation method. The method comprises the steps that 1 the main reference coordinate system of satellite body layout and the self-reference coordinate system of the thruster are established; 2 according to the air injection feature of the thrust, excitation in X, Y and Z directions and based on the main reference is constructed, and one-direction excitation is applied to a satellite; 3 an appropriate reverse excitation method is selected for the excitation in each direction; when the satellite safety deflection angle exceeds a safety range during in-orbit excitation, the reversely applied thrust makes the satellite to be stable; when the satellite safety deflection angle is in the safety range, the current deflection angle is maintained. According to the invention, adaptability revision is carried out on the solar wing layout scheme of different satellites; the requirement of solar wing modal identification of different models of satellites is met; the versatility is high; and the method is suitable for satellite solar wing in-orbit modal measurement and is highly targeted.

Description

technical field [0001] The invention relates to a modal excitation method, in particular to a method for realizing on-orbit solar array modal excitation by using a thruster. Background technique [0002] The mode identification of satellite solar arrays in orbit adopts the thruster excitation for attitude and orbit control. The identification experiment in the early stage of orbit operation is a kind of safety must be considered, that is, the impact on spaceborne missions must be controlled to a minimum and fully considered. Therefore, it is hoped to adopt an incentive method that can not only control the risk to a minimum, but also effectively achieve experimental identification in a steady state as much as possible. [0003] At present, using the thruster to realize the modal excitation method of the solar array in orbit has the following problems: [0004] (1) In the solar array on-orbit modal parameter excitation method, the characteristics of the excitation source are ...

AI Technical Summary

Problems solved by technology

Due to the limitation of ground test conditions, it is impossible to accurately and reliably display the in-orbit status of the solar wing, resulting in high or low reliability in the design process, making the process parameters inconsistent with the actual situation in orbit, and there are reliability problems;

[0005] (2) There is a lack of modal excitation methods for on-orbit solar arrays using thrusters

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