Abstract
Approximate solutions to a weighted mixed-sensitivity H-x-control problem for an irrational transfer matrix are obtained by solving the same problem for a reduced-order (rational) transfer matrix. Upper and lower bounds for the sensitivity are obtained in terms of the sensitivity for the reduced-order model and the approximation error, Moreover, rational suboptimal controllers for the irrational transfer matrix are constructed which achieve a sensitivity close to the minimum.
Original language | English |
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Pages (from-to) | 1312-1321 |
Number of pages | 10 |
Journal | IEEE Transactions on Automatic Control |
Volume | 41 |
Issue number | 9 |
DOIs | |
Publication status | Published - Sep-1996 |
Keywords
- DIMENSIONAL SYSTEMS
- DELAY SYSTEMS
- ROBUST STABILIZATION
- COPRIME FACTORS
- APPROXIMATION
- PLANTS
- MODEL