A robust H/sub /spl infin// estimator design for linear uncertain system

In this paper we consider the problem of a robust H/sub /spl infin// optimal estimator design for continuous-time linear systems in the presence of parameter uncertainties. A method that expresses the system uncertainty in the estimator design problem is introduced. This expression for system uncertainty does not change the structure of the standard H/sub /spl infin// optimal problem. Therefore, a complete solution is achieved by using existing results of H/sub /spl infin// optimization theory.