Satellite autonomous orbit control system for achieving distributed formation flight

Abstract

The invention discloses a satellite autonomous control system for achieving a distributed formation flight. The satellite autonomous control system is composed of six channels, is embedded in satellite controllers, and can generate orbit control commands in advance in an existing satellite management and control system to provide readiness time for engine catalyzing bed heating, attitude maneuver, ground verification and the like. The satellite autonomous control system is characterized in that channel control command sets are stored in RAMs of the satellite controllers, the channel control command sets which are circularly called are stored in a dynamic data flow, and therefore on-satellite resources such as databases and data inquiring are prevented from being occupied. The satellite autonomous control system is embedded in the satellite controllers to be called in the mode of a relatively-independent subprogram, in other words, the management and control system polls the autonomous orbit control progress at each moment. The satellite autonomous control system can serve as supplement of the existing satellite management and control system, an original on-satellite management and control software system is not required to be redesigned, and the satellite autonomous control system can achieve tasks such as formation structure capturing, structure reconstituting and structure keeping of a satellite, and take part in the function that fault satellites in a formation are evacuated.

Description

technical field [0001] The present invention relates to a satellite formation flight control system under the existing satellite platform technology and equipment system, more particularly, refers to the design of satellite formation flight in order to realize the formation flight of satellites without changing the existing on-board management and control software. An autonomous satellite orbit control system. Background technique [0002] The horizontal speed of satellite flight is called the first cosmic speed, that is, the orbital speed. As long as the satellite obtains the speed in this horizontal direction, it can fly around the earth without further power. At this time, the flight path of the satellite is called the satellite orbit. Satellite orbit parameters are various parameters used to describe the position, shape and orientation of satellites in space. [0003] Chinese patent application number CN201310036399.4, date of application: January 30, 2013, title of i...

AI Technical Summary

Problems solved by technology

[0007] According to the analysis of aerospace dynamics, the characteristic frequency of orbital change is the orbital angular velocity; while the frequency of attitude control largely depends on the setting of gain parameters (such as: magnetic torquer capacity, thruster pulse width, etc.); Considering the nature of satellites, for the earth's artificial satellites, the failure of orbit control only affects the overhead plan of the satellite, while the failure of attitude control directly leads to the power failure of the satellite and the disconnection of the uplink and downlink, which directly threatens the survival of the satellite.

Therefore, the attitude control must rely on the feedback loop, and the control task is handed over to the computer, and the manpower is limited by factors such as geography and cost, which will not be realized; while the orbit control is just the opposite, because the change frequency is relatively slow, giving the ground sufficient time to formulate the control task

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