Kybernetika

In this paper, we treat the class of nonlinear uncertain dynamic systems that was considered in [D.\,M. Dawson, Z. Qu and J.\,C.Carroll: On the state observation and output feedback problems for nonlinear uncertain dynamic systems. Sysems Control Lett. {\mi 18} (1992), 217--222.]. We consider continuous-time dynamical systems whose nominal part is linear and whose uncertain part is norm-bounded. We study the problems of state observation and obtaining stabilizing controller for uncertain nonlinear systems, where the uncertainties are characterized by known bounds.