基于观测器的鲁棒H∞故障检测问题研究

《基于观测器的鲁棒H∞故障检测问题研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、山东大学博士学位论文基于观测器的鲁棒H<,∞>故障检测问题研究姓名：马传峰申请学位级别：博士专业：控制理论与控制工程指导教师：钟麦英20071016山东大学博士学位论文界未知输入影响的线性时不变系统的参数故障检测问题。对于传感器、执嚣器秘元器馋数簿袭瑗戈参数摄动形式懿繁魏，将参数敖簿捡溺闼瑟攒述为加能故障的检测问题，给出了参数故障的可检测性概念，提出了针对参数故障的基于观测器的故障检测系统设计上气优化方法。繁六章臻究7一类线蝗跨潞系统豹基予瓣溅器熬丢k教簿检测楚瑟。遵过对线性时滞系统进行广义坐标变换，得到了只包含输入、输出时滞，无状态时滞的新的系统表达形式。基于新得到的系统模型，

2、选用基于观测器豹敖障检溅滤波器作失残差产裳系统，使{；譬戮黥残差蘩态方程秀仅包禽寒知输入时滞和故障时滞的线性时不变形式，进而可以应用已经取得的线性时不变系统故障诊断研究成果设计故障检测滤波器，并给嫩了一种线性时滋系统藏障检溅滤波嚣设诗懿甄。饶纯设诗方法。关键词：观测器；故障检测滤波器；残麓产生器；线性矩阵不等式；玩滤波VIAbstractModeluncertaintyandtimedelaysareusuallyunavoidableinmostindustrialprocessesandcomputercontrolsystems，suchaschemicalprocesse

3、s，paperindustry,electricpowertransmission,andnetworkedcontrolsystems．Inordertoensurethesystemsafetyandreliability,researchesonrobustfaultdetectionforsystemswithmodeluncertaintiesandsystemswithtimedelaysareveryimportant．Themainpurposeofthisdissertationistoinvestigateproblemsrelatedtoobserver-b

4、asedrobust以faultdetectionforlinearsystems谢thPolytopicmodeluncertainties．1inearsystemswithmultiplicativestochasticnoise，linearsystems谢mparametricfaults，andlinearsystems晰thconstanttime·delays，respectively．InChapter2，twoapproachestoobserver-basedH。faultdetectionarebrieflyintroduced．OneistheH。opt

5、imizationapproach．UsingtheH。norlnornonzerominimalsingularvalueoftransferfunctionfromfaulttoresidualasasensitivityperformanceindexandtheH。normoftransferfunctionfromunknowninputtoresidualasarobustperformanceindex,thedesignoffaultdetectionfilterCanbeformulatedasaminimizationproblemandaunifiedsol

6、utionhasbeenobtainedbysolvingamatrixRiccatiequation．Theotheristhe风filteringformulationoffaultdetection，whichcallbesolvedbyapplyingthetechniqueoflinearmatrixinequality．InChapter3，theproblemofrobustfaultdetectionforlineardiscrete-timesystemswithbothunknowninputsandPolytopicuncertaintiesisstudie

7、d．ThemaincontributionsincludetheH。filteringformulationofrobustfaultdetection,theextensionofanH。filteringapproachtolinearsystemwithPolytopicuncertainties，thederivationofsufficientconditionsintermsoflinearmatrixinequalities，andtheparameterizati