Nonlinear Dynamics of a Spacecraft Respinup by a Weak Internal Control

Robust Control of a Spacecraft Respinup by Weak Internal Forces

“…3 in Somov et al (2004)) are direct proofs for large efficiency of the GDs as compared with the RWs. The solution achieved is based on the methods for synthesis of nonlinear robust control (Somov, 2002;Somov et al, 2002) and on rigorous analytical proof for the required SC rotation stability (Somov et al, 2003b(Somov et al, , 2004. These results were verified by computer simulation (Somov et al, 1999a) of strongly nonlinear oscillatory processes at respinuping a flexible SC.…”

“…Fig. 3 in Somov et al (2004) summarizes the simulation results for initial position of the SC AM vector along the unit g(t 0 ) = {0, 0, 1} within the BRF and module g o = 300 Nms, and its final position coincided with the unit f = {0, 1, 0}. For clearness, where the simplest canonical GMC schemes were applied: on 3 RWs (constrains M m = 0.15 Nm and H m = 5 Nms) and the 2-SPE scheme on 4 GDs with h g = 7.5 Nms, see Fig.…”