航天器軌道轉(zhuǎn)移與交會(huì)最優(yōu)控制研究.pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文航天器軌道轉(zhuǎn)移與交會(huì)最優(yōu)控制研究姓名：李亮申請學(xué)位級別：碩士專業(yè)：一般力學(xué)與力學(xué)基礎(chǔ)指導(dǎo)教師：和興鎖20050301西北工業(yè)大學(xué)碩士學(xué)位論文摘要AbstractThispaperinvestigatesproblemsofoptimumorbittransferandrendezvous.AccordingtooptimalcontroltheoryandthePontryaginmaximumprinciple

2、kineticvariablesandkinematicvariablesareselectedasstatevariablesrespectively.Kineticvariablesaredisplacementandvelocityvectors.Firstlytheoptimalcontrolequationsarefoundedincartesiancoordinatesystem.Theanalyticsolutionsof

3、impulseorbitareanalyzeddetailedlyandtheoptimalcontrolsolutionsofcoplanarimpulsetransferorbitaredetermined.Secondlytheoptimalcontrolequationsoflimitedpowertransferanditsnumericalsolutionaredeveloped.Finallytheoptimalcontr

4、olequationsinpolarcoordinatesanditsnumericalsolutionareintroduced.Kinematicvariablesareorbitelementsofspacecraft.Theanalyticsolutionsaredeterminedforoptimumlowthrustpowertransferandrendezvousbetweenarbitraryneighboringor

5、bitsinstronggravityfields.AfterapplyingmeanelementmethodtheanalyticsolutionsaredeterminedforoptimumlowthrustpowertransfertransferandrendezvousbetweenarbitraryneighboringorbitsinconsideringtheEarthsoblateness.Thechangesof

6、optimaltrajectorycausedbyEarthsoblatenessarecomputed.Severalconclusionsaresummarizedfromthispaper:theoptimalcontrolequationsbasedonkineticvariablescanexpedientlydevelopthecoplanaranalyticsolutionswhichhaveclearkineticmea

7、ningtheoptimalcontrolequationsbasedonkinematicvariablescangetitsanalyticsolutionofspaceorbittransferandcangettheanalyticsolutionwhenconsideringtheEarthsoblateness.Inactualapplicationwecanusetheoptimalcontrolsolutionsofth