Stability analysis of the extended state observers by Popov criterion

(整期优先)网络出版时间:2012-04-14
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Theanalysisanddesignoftheextendedstateobserver(ESO)involvesacontinuousnon-smoothstructure,thusthestudyoftheESOdynamicrequiresmathematicaltoolsofthenonlinearsystemsanalysis.ThispaperestablishesthesufficientconditionsforabsolutestabilityoftheESO.Basedonthisstudy,amethodologytoestimateseveralnonlinearfunctionsindynamicssystemsisproposed.