Robust Stability and an Estimation of PRD for Nonlinear Composite Large-Scale Systems with Uncertain Parameters

In this paper, nonlinear large-scale composite systems with uncrtain parameters are investigated. By applying differential geometric theory, the prolbem of robust stability of nonlinear composite systems is transformed to the corresponding problem of a class of nonlinear composite systems in which each isolated subsystems is linear. Then, soing criteria of robust stability for the nonlinear large-scale composite systems with uncertain parameters are presented. Finally, an example is introduced to illustrate the result of this paper and the method of finding the parametric robust domain (PRD) of large-scale composite systems.