Title :
Saturation avoidance method for control moment gyros during spacecraft attitude maneuvers
Author :
Zhao Qian ; Huang Haibing ; Tang Guojin
Author_Institution :
Coll. of Aerosp. Sci. & Technol., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
This article investigates the spacecraft large-angle attitude maneuver control considering control moment gyros (CMGs) saturation. In order to design the control laws to avoid CMGs saturation during attitude maneuvers, novel potential functions for spacecraft are proposed based on the artificial potential function (APF), in which the distance between the present attitude and the aiming attitude is used as an attractive potential function and the saturation state of CMGs is employed as a repulsive potential function. And then, the control laws for stable and unstable terminal attitudes are proposed respectively using Lyapunov method. Numerical examples show that the proposed control laws can avoid CMGs saturation during the large-angle attitude maneuvers.
Keywords :
Lyapunov methods; attitude control; collision avoidance; gyroscopes; APF; CMGs saturation state; Lyapunov method; artificial potential function; attractive potential function; control law design; control moment gyros saturation; repulsive potential function; saturation avoidance method; spacecraft large-angle attitude maneuver control; unstable terminal attitudes; Attitude control; Lyapunov methods; Materials requirements planning; Orbits; Space vehicles; Torque; Artificial Potential Function; Attitude Maneuver; Control Moment Gyros; Saturation Avoidance;
Conference_Titel :
Control and Decision Conference (CCDC), 2015 27th Chinese
Conference_Location :
Qingdao
Print_ISBN :
978-1-4799-7016-2
DOI :
10.1109/CCDC.2015.7162210
