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Robustness analysis of control systems with disc uncertainties

Robustness analysis of control systems with disc uncertainties
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摘要 For a class of control systems with disc uncertainties, robust performance anaysis is developed. On the strictly positive realness and H-infinity-norm of uncertain systems, from the geometric point of view, two new sufficient and necessary conditions are given. The largest H-infinity-norm bound, containing the coefficients of only stable polynomials and centered at a nominal stable point in the coecient space is found. The results obtained in the paper are tractable and concise, which is illustrated by some numerical examples. For a class of control systems with disc uncertainties, robust performance anaysis is developed. On the strictly positive realness and H-infinity-norm of uncertain systems, from the geometric point of view, two new sufficient and necessary conditions are given. The largest H-infinity-norm bound, containing the coefficients of only stable polynomials and centered at a nominal stable point in the coecient space is found. The results obtained in the paper are tractable and concise, which is illustrated by some numerical examples.
出处 《控制理论与应用(英文版)》 EI 2005年第4期327-333,共7页
基金 TheresearchworkwassupportedbyNationalNaturalScienceFoundationofChina(No.60204006,69925307).
关键词 Robusmess Disc polynomial Strictly positive realness Hurwitz stability H-infinity-norm Robusmess Disc polynomial Strictly positive realness Hurwitz stability H-infinity-norm
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