Robust Controller Synthesis is Convex for Systems without Control Channel Uncertainties



We consider an uncertain generalized plant whose control channel is not affected by uncertainties. It is shown that these configurations emerge in various concrete problems such as robust estimator or feed-forward controller design. Under the mere hypothesis that the (possibly non-linear) uncertainties are described by integral quadratic constraints, we reveal how one can translate robust controller synthesis to a problem of designing parametric and dynamic components in a standard plant configuration, and how this can be turned into a semi-definite program.


Transfer Matrix Linear Matrix Inequality Convex Optimization Synthesis Problem Linear Matrix Inequality Constraint 
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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Delft Center for Systems and ControlDelft University of TechnologyDelftThe Netherlands

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