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Thispaper proposes dilated LMI characterizations of admissibility, D-admissibility, H ∞ and H 2 norms for continuous-time descriptor systems. These dilated LMIs achieve less conservative results when dealing with robust admissibility/performance analysis of affine parameterdependent descriptor systems. Furthermore, based on these conditions, the paper presents an iterative design procedure for multiobjective state feedback control of parameter dependent descriptor systems. The main idea underlying the proposed method is to linearize the products of controller parameter K and the auxiliary variable G by assigning a part of G . When initializing the proposed algorithm, the assignment takes into account an explicit characterization of G . The effectiveness of the proposed conditions and design method is shown through some numerical examples.

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