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:1009-3486(2003)01-0080-041,1,2(1.,430033;2.,266071):,.,..:;;:TM154.2:AThesectiondegaussingtheoryofcapitalshipsTANGShen2sheng1,ZHOUYao2zhong1,ZHUANGQing2hua2(1.Dept.ofElectricalEng.,NavalUniv.ofEngineering,Wuhan430033,China;2.EquipmentDepartmentofQingdaoNavalBase,Qingdao266071,China)Abstract:Inordertoovercomesomeshortcomingscausedbythesingledegaussingcurrentloopusedintheexistingshipdegaussingsystem,thesectiondegaussingtheoryisfirstpresented.Themodelteststudyismadeonthebasisoftheoreticalanalysiscalculation.Thedataandconclusionshaveimportantreferencevaluesfortheshipdegaussingsystemdesign,building,calibration,etc.Keywords:sectiondegaussing;sectionpartition;ampere2turncalculation1,,,,,.,,:,,;,,,,.,,,;,;..22.1,,.15120032JOURNALOFNAVALUNIVERSITYOFENGINEERINGVol.15No.1Feb.2003:2002205214;:2002206210:(19602),,.,.,..2.2,,,.,,,.2.3,,,.2.4,,,.33.1,1rp1-[1],:dB=0Idlr4r3(1)dH=Idlr4r3(2):0,,0=410-7HPm,BT,HAPm.(2),:H(x0,y0,z0)=I4BAdlrr3=I4x2x1(y0-y)k-(z0-z)j[(x0-x)2+(y0-y)2+(z0-z)2]3P2dx+I4y2y1(z0-z)i-(x0-x)k[(x0-x)2+(y0-y)2+(z0-z)2]3P2dy+I4z2z1(x0-x)j-(y0-y)i[(x0-x)2+(y0-y)2+(z0-z)2]3P2dz(3):r=[(x0-x)2+(y0-y)2+(z0-z)2]1P2(x0,y0,z0)(x,y,z).,.,xOy,(3):H(x0,y0,z0)=I4x2x1(y0-y)kr3dx-I4y2y1(x0-x)kr3dy-I4(z0-z)[x2x1jdxr3-y2y1idyr3](4)181:x,(3):H(x0,y0,z0)=I4[(y0-y)k-(z0-z)j]x2x1dxr3(5),,.23.22,,(x0,y0,z0)[2].,(3)(5),,,.3.3.,.,.44.13:.,(Hd)(Zd),.,..4.2(1)ZHHPHZ,,,.(2),,.(3),,,,,.3(4),,.As,Aw,AwAs,,,(3).ZLZw,ZLZw:ZL-Zw=ZwAw-ZLAsZw=(1+As)ZL(1+Aw)(6)ERA=ZL-(1+As)ZL1+Aw=(Aw-As)ZL1+Aw(7)2815ERA,,..4.34.3.1,m,n.ijaj,i.jHZj,iAWi.,.:aj,i(j=1,2,,m;i=1,2,,n),AWi(i=1,2,,n),HZj(j=1,2,,m).mn,..4.3.2,.(3)..,,.5,,.,.,.:[1].[M].:,1980.[2].[M].:,1984.381: