›› 2017, Vol. 37 ›› Issue (5): 60-.doi: 10.16708/j.cnki.1000-758X.2017.0068

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Magneticfieldcharacteristicsanalysisandoptimizationdesignof30cmxenonionthruster

 HU  Jing, WANG  Liang, ZHANG  Tian-Ping, JIANG  Hao-Cheng   

  1. NationalKeyLaboratoryofScienceandTechnologyonVacuumTechnologyandPhysicsLaboratory,LanzhouInstituteofSpaceTechnologyandPhysics,Lanzhou730000,China
  • Received:2017-03-20 Revised:2017-07-17 Online:2017-10-25 Published:2017-09-12

Abstract: Themagneticfielddesigndirectlyinfluencesthestabilityandtheinorbitlifeofthedischargechamber.Aimingatthecomplexityofthe30cmxenonionthrustermagneticfielddesigninvarietyofoperatingmodes,themagneticcircuitcharacteristicswasanalyzedduringtheconversionbetweentheelectromagnetandpermanentmagnet.Andthekeyparametersofthepermanentmagnetwereoptimized.Themagneticcircuitmodelofthe30cmxenonionthrusterwasestablished,combinedwiththefiniteelementmethod,theeffectivenessandfeasiblityofthismethodwasvalidatedbycomparedwiththejobsitedata.Basedonthismodel,thekeyparametersofthepermanentmagnetwhichcouldproducerequestedmagneticinductionintensitywereobtained.Thenthekeyparametersofthepermanentmagnetwereoptimizedbyusingmultiobjectiveparticleswarmoptimization(MPSO)algorithm,withthegoaloftheminimumanodeshockvoltage,acceleratorgridcurrent,deceleratorgridcurrentandmagneticcircuitsystemweightsystem,andtherelevantoptimalresultofmagneticcircuitconfigurationfor30cmxenonionthrusterwasobserved.Aboveresearchwillcertainlyprovideamethodforthedesignandoptimizationoftheionthruster.

Key words: ionthruster, electromagnet, permanentmagnet, magneticcircuitmodel, optimizationdesign