A Data-Based Direct Design Technique for Approximate I/O Decoupling of Discrete-Time Nonlinear Systems

Abstract In this paper the design of quasi-decoupling controllers for discrete-time non-linear plants is addressed using a recently developed Virtual Input Direct Design (VID 2 ) approach. The resulting technique, based on plant Input/Output/State data, carries the controller design into a standard nonlinear identification problem, without calling for the preliminary identification of any model of the plant.