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Frequency Response of Uncertain Systems: Strong Kharitonov-Like Results | | Long Wang
; | | Date: |
16 Feb 2002 | | Subject: | Optimization and Control; Dynamical Systems MSC-class: 93C80 | math.OC math.DS | | Abstract: | In this paper, we study the frequency response of uncertain systems using Kharitonov stability theory on first order complex polynomial set. For an interval transfer function, we show that the minimal real part of the frequency response at any fixed frequency is attained at some prescribed vertex transfer functions. By further geometric and algebraic analysis, we identify an index for strict positive realness of interval transfer functions. Some extensions and applications in positivity verification and robust absolute stability of feedback control systems are also presented. | | Source: | arXiv, math.OC/0202151 | | Services: | Forum | Review | PDF | Favorites | |
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