Properties of H2 Optimality for Two-Degree of Freedom Control Systems

L. Keviczky and Cs. Bányász (Hungary)


Optimal sensitivity, error decomposition, robustness, YOULA parametrization


The control error has three major parts in a control system: design-, realizability- and modeling-loss. This new decomposition opens useful ways for practical optimization of a generic two-degree of freedom (TDOF) system and helps the construction of new algorithms for robust identification and control. The paper investigates the H2 optimality of the realizability-loss.

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