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Semidefinite programming duality and linear time-invariant systems

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2 Author(s)
Balakrishnan, V. ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Vandenberghe, L.

Several important problems in control theory can be reformulated as semidefinite programming problems, i.e., minimization of a linear objective subject to linear matrix inequality (LMI) constraints. From convex optimization duality theory, conditions for infeasibility of the LMIs, as well as dual optimization problems, can be formulated. These can in turn be reinterpreted in control or system theoretic terms, often yielding new results or new proofs for existing results from control theory. We explore such connections for a few problems associated with linear time-invariant systems.

Published in:

Automatic Control, IEEE Transactions on  (Volume:48 ,  Issue: 1 )