On slowly varying systems - l-infinity to l-infinity performance and implications to robust adaptive controlThe authors present a result on the l-infinity to l-infinity performance of slowly time varying systems. In particular, it is shown that the performance of such systems cannot be much worse than that of the frozen-time systems which are time invariant. This result is used to characterize a class of indirect adaptive controllers that can stabilize a time-invariant system subjected to both parametric and l-infinity to l-infinity bounded unstructured uncertainty. Pertaining to this class of controllers, a particular indirect adaptive scheme is proposed that provides the greatest upper bound on the size of the unstructured uncertainty for which stability is ensured.
Document ID
19930038865
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Voulgaris, Petros G. (Illinois, Univ. Urbana, United States)
Dahleh, Munther A. (NASA Ames Research Center Moffett Field, CA, United States)
Valavani, Lena S. (MIT Cambridge, MA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: 1992 American Control Conference, 11th, Chicago, IL, June 24-26, 1992, Proceedings. Vol. 2 (A93-22776 07-63)
Publisher: Institute of Electrical and Electronics Engineers