The robust H/sub 2/ control problem: a worst-case design
- 1 January 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Automatic Control
- Vol. 38 (9) , 1358-1371
- https://doi.org/10.1109/9.237647
Abstract
The worst-case effect of a disturbance system on the H/sub 2/ norm of the system is analyzed. An explicit expression is given for the worst-case H/sub 2/ norm when the disturbance system is allowed to vary over all nonlinear, time-varying and possibly noncausal systems with bounded L/sub 2/-induced operator norm. An upper bound for this measure, which is equal to the worst-case H/sub 2/ norm if the exogeneous input is scalar, is defined. Some further analysis of this upper bound is done, and a method to design controllers which minimize this upper bound over all robustly stabilizing controllers is given. The latter is done by relating this upper bound to a parameterized version of the auxiliary cost function studied in the literature.Keywords
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