Applications of non-uniform in time robust global asymptotic output stability to robust partial state feedback stabilization

The problem of adding an integrator is considered for time-varying control systems. Sufficient conditions for the solution of this problem are given, which are weaker than the corresponding conditions given in the literature. To this end, the notion of non-uniform in time robust global asymptotic output stability (RGAOS) is used. Applications to problems of partial state feedback global stabilization are considered.