Flexible part orientation acquiring method under attitude orbit control maneuvering action

Abstract

A flexible part orientation acquiring method under attitude orbit control maneuvering action includes: performing structural finite element modeling on a reflective plane antenna to build a satellite rigid-flexible coupling dynamics model, and acquiring a vibration mode vector of the reflective plane antenna; building a satellite attitude control action model, and enable the same and the satellite rigid-flexible coupling dynamics model to form a satellite dynamics model; establishing an expression formula of antenna radiation field intensity under antenna vibration mode space, and building a whole satellite system on-orbit state dynamics-attitude control-antenna radiation comprehensive model; simulating according to satellite on-orbit working excitation data to acquire time change mode coordinates of antenna vibration, substituting the time change mode coordinates into the radiation field mode space expression formula, and acquiring dynamic influence change of on-orbit working mode on antenna radiation field intensity.

Description

technical field [0001] The invention relates to a method for acquiring the pointing of a flexible component under the action of an attitude-orbit control maneuver, aiming at the on-orbit working process of a large-scale expandable cable net reflector antenna, and is used in the technical field of analyzing antenna pointing changes caused by antenna vibration caused by satellite on-orbit work. Background technique [0002] With the continuous improvement of spacecraft mission requirements, the complexity of spacecraft is constantly rising, and more and more large flexible components have been implemented in orbit on spacecraft. In recent years, space-borne antennas, which are important payloads of satellites, have shown a development trend towards high precision and large-scale structures. Spaceborne large-aperture reflector antennas are typical large-scale flexible components, and my country is also developing various new spacecraft with large-scale reflector antennas. This...

AI Technical Summary

Problems solved by technology

For the beam pointing analysis of the free-floating platform and the vibration process of the antenna structure, only the beam pointing analysis under the static antenna profile cannot give the beam pointing changes of the antenna during the entire vibration process, and cannot efficiently give the worst antenna Beam pointing error, which obviously cannot meet engineering requirements

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