采样系统鲁棒稳定性分析的新方法

？Theliftingtechniqueisnowthemostpopulartoolfordealingwithsampled-datacontrolsystems.However,fortherobuststabilityproblemthesystemnormisnotpreservedbytheliftingasexpected.Andtheresultisgenerallyconservativeunderthesmallgaincondition.Thereasonforthenormdifferencebytheliftingisthatthestatetransitionoperatorintheliftedsystemiszerointhiscase.Anewapproachtotherobuststabilityanalysisisproposed.Itistouseanequivalentdiscrete-timeuncertaintytoreplacethecontinuous-timeuncertainty.Thenthegeneraldiscretizedmethodcanbeusedfortherobuststabilityproblem,anditisnotconservative.Examplesaregiveninthepaper.