机床静压导轨油膜厚度的控制方案研究

(,276005):,,2,2:,,,:;;;:TH70314:A:100320794(2008)0220159203StudyonControlSchemesofOilFilmThicknessforHydrostaticSlideCHENPei-jiang(EngineeringCollege,LinyiNormalUniversity,Linyi276005,China)Abstract:Thecontrolofoilfilmthicknessforhydrostaticslideisnecessaryimprovedtheperformanceofmove2mentprecisionandlow-speedstabilityeffectivelywhentheloadofhydrostaticslideistime-varied.Twocontrolschemesofoilfilmthicknessbasedondirectcurrentvelocitymodulated(DCVM)andalternatingcur2rentfrequencyconversionvelocitymodulated(ACFCVM)areproposedrespectivelyandtheirperformanceareanalyzedcontrastively.StudiesshowthatACFCVMhastheadvantageoflowercosts,convenientformainte2nanceandbetterenergysaving.Keywords:hydrostaticslide;oilfilmthickness;ACFCVM;DCVM0,2,,,,;,,,,,,,,,,,,,,11.12,,,()1,1,,,pQ,=h0-e,,,Q,p0p=p0+p,95129220082CoalMineMachineryVol129No12Feb.2008;111213141511.22,n;,2Ae=14(L+l)(B+b)(1)LBlbQ=h3P6u(L+lB-b+B+bL-l)(2)P=WmPAeWm;h;u,n=QPq(3)qU=Ea+IaRa+2us(4)U;Ea,Ea=Cen,Ce=pNP60a;N;a;;Ia;Ra;2us2n=Qq=U-IaRa-2usCe(5)h,(2),(5),,,:,,;22.1,,,,vPf3vPf,vPf;,,,()061Vol129No12292(),,,(iAiBiC)(ii),(iTim)2,im,iT,Te,332.2,,,,44,(iAiBiC),3P2,(Te);,,Te(2)(5),;,:,3,,,:[1].[J].,2003,101(5):26-28.[2],.VB[J].,2004,(5):40-42.[3]StansfieldFM.HydrostaticBearingforMachineTool[M].MachineryPublishingCoLtd,1997.[4].[J].,2004(4):68-70.[5],.[J].,2006,27(1):27-28.:(1977-),,,,:,,:0539-2068817,:[e-mail].:2007208231,,(),,,;,,,,,,,;,,,;,:;,161292Vol129No12