Multimodel analysis and control of multivariable systems

The use of the multimodel approach in the modeling, analysis and control of nonlinear complex and/or ill-defined systems was advocated by many researchers. This approach supposes the definition of a set of local models valid in a given region or domain. Different strategies exist in the literature and are generally based on a portioning of the nonlinear system´s full range of operation into multiple smaller operating regimes each of which is associated with a locally valid model or controller. The global control may be a fusion between the partials laws. The purpose of the paper is to pay attention to interesting aspects of the multimodel approach thus revealing some answers to problems not yet resolved for multivariable systems