A parametrization approach to optimal H∞ and H2 decentralized control problems

The paper proposes a two-stage design approach to optimal H
_2/
and H
_∞
decentralized control problems. In the first stage, an optimal centralized controller is computed. Then based on the parametrization results for centralized controllers, in the second stage, the parameter that decentralizes the controller is optimized. The design approach is applied to an observer-based decentralized controller. Optimality conditions are derived.