State Blocking Systems: Modeling and behavior

This paper deals with a specific category of systems called State Blocking Systems (SBS). Time evolution of such processes is characterized by time intervals where some state components are kept constant, so that classical models are not generally available. The state components can be found in two statuses, namely: active or blocked. Such systems are a particular case of Variable Structure Systems (VSS). The main idea in this paper is to model SBS by using so called blocking functions and to realize a parameterization based on time intervals. Different cathegoruy of SBS are presented. A time variable decomposition is proposed. Examples obtained by numerical simulation point out the advantages of this approach.