简介:Onthebasisoftheprincipleofdielesshydrobulgingtechnology,anovelhydrobulgingtechnologyformanufacturinghyperbolicplatesisproposed.First,atoroidalpipeelboworapartialtoroidalpipeelbowisformed,thenthesinglehydrobulgedstructurecanbecutupintosomedesiredplates.Itisprovedbyexperimentsandfiniteelementsimulationthatmanufacturingtechnologyofhyperbolicplatesadoptingintegratedhydrobulgingformingtechnologyisfeasible.
简介:Threekeyfactorsarediscussed,whichaffectpositioningaccuracyofrange-rangepositioningmodeandhyperbolicpositioningmode.Basedontheerrorellipticaltheory,theexpressionsofpositioningerrorandofpositioninggeometricfactorofrange-rangepositioningmodeandhyperbolicpositioningmodearederived,andthepositioningerrorandtheblindpositioningareaoftwodifferentpositioningmodesareanalyzed.Accordingtotherequirementofnavigationarea,anoptimumpositional