Multi-unit torque distribution method for spacecraft takeover control

Abstract

The invention relates to a multi-unit torque distribution method for spacecraft takeover control. According to the multi-unit torque distribution method, each actuator can output control torque according to energy storage conditions of the corresponding actuator through energy storage information interaction of the actuators, so that the total output of all the actuators can track control signals; and in the description of the subsequent steps, each actuator for independent energy supply is called an actuating node. Output amplitude limit and energy balance limit are controlled while tracking of the control signals is guaranteed. The multi-unit torque distribution method for spacecraft takeover control disclosed by the invention is suitable for the control torque distribution under situations of pure thrusters, pure reaction flywheels or mixed configurations and the like, and fuel consumption can be adjusted according to actual needs. Considering that normally implementation of output cannot lead to limit exceeding in a short time, and regular communication does not need to be too frequent, so that communication pressure can be reduced.

Description

technical field [0001] The invention belongs to the field of control distribution, and relates to a multi-unit torque distribution method for spacecraft takeover control, in particular to a control distribution method for multiple independent energy supply execution units in consideration of energy balance and output amplitude limitation. Background technique [0002] With the increasing number of satellites in orbit, many high-value satellites cannot perform effective attitude control due to fuel exhaustion or control system failure, and high-value payloads cannot work normally. In order to restore the functions of high-value satellites and prolong their service life, countries around the world have proposed a variety of in-orbit service methods, among which takeover control is one of the most feasible solutions. By docking the service spacecraft with the target spacecraft, the attitude and orbit control system of the service spacecraft is used to take over the attitude and...

AI Technical Summary

Problems solved by technology

[0003] In the spacecraft takeover control task, since the high-value target spacecraft are usually relatively large satellites, multiple sets of actuators are usually required, so it is necessary to control multiple sets of actuators and distribute the control signals of the tracking service spacecraft, especially Space cell robot, because a single space cell robot usually has limited execution ability, and each cell in the space cell robot is powered independently, so in addition to considering multiple actuator tracking control signals, it is also necessary to consider the load in each cell Equilibrium issues to avoid rapid energy depletion of individual cells due to long hours of work, affecting functional integrity

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