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Robust decoupling of discrete systems using ℒ1 optimization

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2 Author(s)
Choon Kiong Quek ; Nat. Univ. of Singapore, Singapore ; Ai Poh Loh

We address a control design problem related to decoupling, namely robust decoupling. The idea of robust decoupling is defined and shown to be equivalent to robust performance of a Hadamard-weighted L1 performance measure. A necessary and sufficient condition to determine if a compensator satisfies robust performance of a Hadamard-weighted L1 performance measure in the presence of structured uncertainty is given. This condition can be used to determine if a compensator robustly decouples a plant. Finally, an iterative scheme for synthesizing a robust decoupling controller is discussed

Published in:

IEEE Transactions on Automatic Control  (Volume:42 ,  Issue: 4 )