“…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.…”