Abstract

This paper presents a simple method to design a robust controller for a bridge tower under construction using static state and output feedback. The parameter variations due to the constructional progress are considered to be system uncertainties and taken into account in the time of design. System uncertainties of the bridge tower are represented by a set of linear systems and each system corresponds to a particular stage of work. With in the framework of quadratic stabilization, controller which guaranteed a specified damping are obtained by solving a set of Linear Matrix Inequalities (LMI). Controller is shown to be robust with the changes of bridge tower by constructional progress through simulation studies.

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