The worst-case effect of a disturbance system on the H 2 norm of the system is analyzed. An explicit expression is given for the worst-case H2 norm when the disturbance system is allowed to vary over all nonlinear, time-varying and possibly noncausal systems with bounded L2-induced operator norm. An upper bound for this measure, which is equal to the worst-case H2 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
Published in:
Automatic Control, IEEE Transactions on
(Volume:38
,
Issue:
9
)
Date of Publication:
Sep 1993
- Page(s):
-
1358
-
1371
- ISSN :
-
0018-9286
- INSPEC Accession Number:
-
4561550
- Digital Object Identifier :
-
10.1109/9.237647
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
06 August 2002
- Issue Date :
-
Sep 1993
- Sponsored by :
-
IEEE Control Systems Society