Method for reducing disturbance torque of orbital transfer engine by adjusting discharge of parallel storage tanks in real time

Abstract

The invention relates to a method for reducing disturbance torque of an orbital transfer engine by adjusting discharge of parallel storage tanks in real time. The method comprises the following steps: acquiring satellite input information; obtaining a matrix reflecting a storage tank mounting position and a system mixing ratio, a thrust vector under a satellite mechanical coordinate system and engine thrust action point information under the satellite mechanical coordinate system; determining a storage tank propellant filling amount, a satellite centroid, an engine thrust vector and coordinates of an intersection point of an XY plane at the satellite centroid when orbital transfer begins; the X-direction and Y-direction centroid adjustment target values and the like of the satellite in the orbital transfer process are iteratively calculated step by step according to time steps; and during orbital transfer of the satellite, related valves are operated on orbit according to the determined falling pressure / constant pressure mode of the storage tank, and discharge of the parallel storage tanks is adjusted in real time, so that the disturbance torque of an orbital transfer engine is reduced. The method comprehensively considers factors such as performance parameters and satellite loading precision errors of the engine, is close to engineering practice, facilitates engineering application and facilitates improvement of calculation precision.

Description

technical field [0001] The invention relates to a method for adjusting the discharge of parallel storage tanks in real time to reduce the disturbance torque of orbit-changing engines, and belongs to the technical field of satellite orbit-changing. Background technique [0002] The orbit changing engine of the satellite is installed on the outer surface of the deck of the satellite, and its thrust vector generally coincides with a certain geometric central axis of the satellite, and the direction of the orbit changing flight of the satellite is also the direction of the thrust vector. [0003] In recent years, with the increase of satellite propellant carrying capacity and the optimization of satellite configuration, more and more dual-component chemical propulsion system satellites have adopted the parallel storage tank scheme, that is, the oxidant and combustion agent are each filled in two storage tanks, and the satellite variable When orbiting, the two storage tanks disch...

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Problems solved by technology

[0006] In the prior art method for adjusting the balanced discharge of parallel storage tanks, only the discharge of parallel storage tanks can be adjusted and balanced, and the relationship between the balanced discharge, the center of mass of the satellite and the disturbance moment cannot be established. Method of Disturbance Moment of Orbit-changing Engine

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