Diseño Integrado con Realimentación Robusta de Estados vía Desigualdades Lineales Matriciales (Integrated System's Design with Robust State Feedback via Linear Matrix Inequalities)

Omar Pérez López (operez@usb.ve)1, Pastora Vega Cruz (pvega@usal.es)2, Williams R. Colmenares M. (williamc@usb.ve)1, Mario Francisco Sutil (mfs@usal.es)2


1Centro de Automatización Industrial, Sección de Control, Departamento de Procesos y Sistemas, Universidad Simón Bolívar, Venezuela
2Departamento de Informática y Automática, Universidad de Salamanca, España

This paper appears in: Revista IEEE América Latina

Publication Date: Sept. 2004
Volume: 2,   Issue: 3 
ISSN: 1548-0992


Abstract:
Integrated system design is a methodology that incorporates dynamic constraints in the early stages of process design. Hence assuring not only the production goals but also good dynamic performance. In this work we present an approach to integrated system design that considers non linear processes with non linear static constriants and one implicit constraint. The latter, the existance of a state feedback controller that satisfies performance requierements such as stability, robustness to disturbance and parametric uncertainty, and pole location. The controller is calculated for the set of systems obtained when linearizing the non linear plant calculated at each iteration of the non linear static optimization. The approach is applied to a pilot hidraulic system, and the results of the simulations are features including those where simply stability is requiered and those where more demanding performace criteria are requested.

Index Terms:
integrated design, non linear system, system's optimization, robust control, state feedback   


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