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LMI optimization for nonstandard Riccati equations arising in stochastic control

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2 Author(s)
Ait Rami, M. ; Ecole Nationale Superieure de Tech. Avancees, Paris, France ; El Ghaoui, L.

We consider coupled Riccati equations that arise in the optimal control of jump linear systems. We show how to reliably solve these equations using convex optimization over linear matrix inequalities (LMIs). The results extend to other nonstandard Riccati equations that arise, e.g., in the optimal control of linear systems subject to state-dependent multiplicative noise. Some nonstandard Riccati equations (such as those connected to linear systems subject to both state- and control-dependent multiplicative noise) are not amenable to the method. We show that we can still use LMI optimization to compute the optimal control law for the underlying control problem without solving the Riccati equation

Published in:

Automatic Control, IEEE Transactions on  (Volume:41 ,  Issue: 11 )