磁懸浮系統(tǒng)的變結(jié)構(gòu)控制研究.pdf

1、哈爾濱理工大學(xué)碩士學(xué)位論文磁懸浮系統(tǒng)的變結(jié)構(gòu)控制研究姓名：方燕申請學(xué)位級別：碩士專業(yè)：控制理論與控制工程指導(dǎo)教師：張靜20090301哈爾濱理T大學(xué)工學(xué)碩十學(xué)位論文StudyonvariablestructurecontrolofmagneticlevitationsystemAbstractMagn以csuspensionhasbeenpaidmoreandmoreattentionbccauseofitsmanymeritssuch

2、asnomechanicalcontactrioWeallowpowerlossnoneedoflubricationandlongservicelife，etcTheperformanceofmagneticsuspensionisdeterminedmainlybyitscontrolsystemThereforeSOithasgreatsignificancetostudycontrolmethodofsuspensionsyst

3、emRisdifficultforamagneticsuspensionsystemwimtraditionalmethodtosolvetheproblemoftheuncertaintiescausedbytheparametervarietyanddisturbanceAndvariablestructurecontrolmethodhasfastresponseandsystemparameterperturbationande

4、xternalinterferencebytheinvariancepropertiesofgreatimportancetoscholarsThereforethisarticlefocuses011variablestructurecontroltheoryinthemagneticlevitationsystemThisarticleintroducethemaglevsystemcompositionandworkingprin

5、cipleandanalyzesthesystemisunstableandnonlinearcharacteristicsThetraditionalcontrollinearizesthesystempartiallyinthebalancepIDintnearbymostlywhenthedisturbanceistoobigitwillmakethesystemdeviateabalancepointfarawayresulti

6、nginthecontrollerdeterioratingquicklyandinfluencingthesystem’SstabilizationpossiblySointhisarticlemakeuseofsingularperturbationmethodascertainnonlinearcontrolsystemmodelofthemagneticlevitationsystemAlthoughthevariablestr

7、ucturecontrolmethodisrapid，robustnessandeasyimplementationetc，buttheyarebringtohigh—frequencybuffetingofcontrolsignalandthebuffetingnotonlyaffectstheaccuracyandincreasethecapacityofconsumptionevensuchhigllfrequencyinputv

8、eryeasilygiverisetosystematicunmoldedcharacteristics，therebyunderminingtheperformanceofthesystemThispaperintegralslidingsurfacedesignoftheswitchfunctionandcombinedwiththemethodofadaptivecontrolandslidingmodecontrol，adopt