資源描述：
《不同海情下的大型船舶航向、航跡控制方法研究》由會員上傳分享，免費在線閱讀，更多相關內(nèi)容在學術論文-天天文庫。
1、不同海情下的人犁船舶航向、航跡控制方法研究ABSTRACTWiththerapiddevelopmentofworldtrade，porttransportationsarealsoincreasedveryquickly,thenumber,sizeandtonnageofshipsarechangedwithit．Therearealotofshipsinharbourandneararea，itmakestheshipnavigation’Sdensityincreasedandharbour’Senvironmentmakesmoredangerousandc
2、ongested．Shipswastelotsoftimeonenteringanddepartingtheharbour．Soitisimportanttoimprovethemaneuverabilityofshipsforreducetheaccidents．Theautopilotthatusedforshipcontrolsisessentiallyimportantequipmentinshippingmaneuvering．Inourcountry,shipsmountthePIDautopilotbroadly,whichhascoursecontro
3、lfunction．TherearelotsofdisadvantagesinPIDautopilot，justbecausecomplexityofshippingandlimitationofPIDcontroller．ConsideringtheabovesituationtheheadingcontrollerandthetrackcontrollerbasedonGeneticAlgorithmwerebroughtforward．Thisthesisestablishedthethreeunrestrictedmotionmathematicalmodel
4、oflargeshipsbasedontheMMGseparationformula,whichdiscussedandanalyzedthehydrodynamicforcesandmomentsofthemodel，propellerthrustandpropellertorque，thehydrodynamicforcesandmomentsactedontherudderandinterferentialforcesandmomentsproducedbywind，waveandcurrent．Themovementcharacteristicsoflarge
5、shipsandtheaffectofwinds，wavesandcurrentswereconsideredadequatelyinthismodel．ThenappliedthestandardRunge．KuttamethodtocalculatetheequationofmaneuveringmathematicalmodelbyusingVisualCHprogramminglanguageandMATLAB7．0．Basedonthiswork,thesimulationofturningmovementinthestillwaterandthedistu
6、rbofwind，waveandcurrentshadbeenmade．Next，theheadingstabilityoflargeshipsWasdiscussed，andtheinstanceWasshownatlast·Consideringtheeffectonlargeshipsofwind，waveandcurrentindifferentoceancondition，designedtheheadingcontrollerandthetrackcontrollerbycombiningtheGeneticAlgorithmandcontroltheor
7、yofPID，andaccomplishedtheheadingcontrolsimulationandthetrackcontrolsimulationbyusingthismethod．哈爾濱丁程大學碩十學何論文Theanalysisofsimulationresultsshowedthat，theestablishedmotionmathematicalmodeloflargeshipsofthreedegreesoffreedomwascorrectandpractical，thedesignedheadingcontrollerandthe
