Robust Nonlinear Gyromoment Control of Agile Remote Sensing Spacecraft

Physical hysteresis of the piezoelectric drive in precise image velocity stabilization system built into the Earth observing orbit telescope

“…In this paper we consider an Earth-surveying satellite equipped with a telescope [Somov et al, 1999;Somov et al, 2022] and CCD matrices of the optoelectronic converters (OECs) into its focal surface. These matrices work in mode of the time delay and integration (TDI) when an observing given the Earth surface parts by a set of routes for their scanning [Somov et al, 2021].…”

Methods for attitude guidance and precise robust gyromoment control of large-scale agile observation spacecraft

“…Simultaneously the VFL υ(E,ω) is analytically constructed for close-loop system (14) and (15). Discrete measured error quaternion is are E s =(e 0s , e s )=Λ p (t s )•Λ m s and the attitude error filtering is executed by the relations x s+1 =Ãx s +Be s ; e f s =Cx s +De s , where matricesÃ,B,C andD have some general turning parameters.…”

“…Increased requirements to such information satellites (lifetime up to 10 years, exactness of spatial rotation maneuvers with effective damping the SC flexible structure oscillations, robustness, fault-tolerance as well as to reasonable mass, size and energy characteristics) have motivated intensive development the gyro moment clusters (GMCs) based on excessive number of gyrodines (GDs) -single-gimbal control moment gyros. Mathematical aspects of the SC nonlinear gyromoment control were represented in a number of research works [1,2] et al including the authors' papers [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The paper suggests new results on attitude guidance and nonlinear robust gyromoment attitude control of the agile observation spacecraft.…”