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1、中文摘要本文主要研究帶有外部擾動的廣義線性時滯系統(tǒng)有限時間穩(wěn)定及鎮(zhèn)定問題.首先,在外部擾動范數(shù)有界情況下,給出了廣義線性時滯系統(tǒng)有限時間穩(wěn)定的兩種定義.根據(jù)兩種定義,通過構造Lyapunovi函數(shù)的方法,應用線性矩陣不等式,相應地給出了使得帶有外部擾動的廣義線性時滯系統(tǒng)有限時間穩(wěn)定的兩個判據(jù).然后,在給出的帶有外部擾動的廣義線性時滯系統(tǒng)有限時間穩(wěn)定的定義以及穩(wěn)定性判據(jù)的基礎上,給出了使得帶有外部擾動的閉環(huán)廣義線性時滯系統(tǒng)有限時間穩(wěn)定的充分條件,設計了相應的狀態(tài)反饋控制器.然而,在使用線性矩陣不等式方法時,不
2、等式中存在的非線性約束阻礙了狀態(tài)反饋增益矩陣的求解.因此,本文采用最大特征值與最小特征值的方法對相應矩陣進行估計,同時應用錐補線性化方法將非線性約束條件轉化成可解的線性矩陣不等式,從而設計出使得閉環(huán)系統(tǒng)有限時間穩(wěn)定的狀態(tài)反饋控制器.數(shù)值例子與仿真結果表明了本文所提出的設計方法的有效性.關鍵詞:廣義線性時滯系統(tǒng);有限時間穩(wěn)定;有限時間鎮(zhèn)定;狀態(tài)反饋;外部擾動;線性矩陣不等式:錐補線性化黑龍江大學碩士學位論文AbstractInthispaperfinite-timestabilityandfinite-tim
3、estabilizationproblemsforaclassofsingularlineartime-delaysystemswithtime-varyingexogenousdisturbancesarestu出ed.Firstofall,twodifferentdefinitionsoffinite-timestabilityforsingularlineartime-delaysystemsalegivenwhentheexogenousdisturbancesarenorn'lbounded.Ac
4、cordingtothesetwodefinitions,twosufficientconditionsofthefinite-timesta.bilityforthiskindofsystemsarepresentedbycombiningLyapunovapproachandlinearmatrixinequalitytechnique.Then,basedonthedefinitionsandsufficientconditionsofthefinite-timesta-bilityforthiski
5、ndofsystems,onefinite-timestabilizationconditionforthisl【indofsystemsispresentedandthecorrespondingstatefeedbackcontrollerisdesigned.However,thenonlinearproblemswhichpreventUStogetthestatefeedbackgaininthelinearmatrixinequalitiesaxesolvedbymaximum-eigenval
6、ueand.m......i...n....i...m.——u.....m.—.-eigenvalueapproachaswellasanalgorithmso-calledconecomplementaritylin-eaxization.Thereby,theconsideredfinite-timestabilizationproblemviastatefeed-backcontrollerissolved.Theeffectivenessoftheapproachesproposedinthispa
7、perarepresentedbynumericalexamples.Keywords:singularlineartime-delaysystems;finite-timestability;fmite-timestabilization;statefeedback;exogenousdisturbance;linearmatrixinequality;conecomplementaritylinearizationII—目錄中文摘要..............。.....................
8、IAbstract.....................................II目錄.......................................III符號說明....................................V第1章緒論...................................1i.I有限時間穩(wěn)定及鎮(zhèn)定問題的研究現(xiàn)狀..............1