机械外文文献及翻译.pdf
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1、-与机械相关的外文及翻译与机械相关的外文及翻译MuMutidiscitidisciinarinar DesignDesignOptimiOptimiatioatiof f odularodularIndusIndusal al obotobot y yU Uiliiliinging ighigh l CADl CAD empempatesates1、IntroductonIn th eign o coplex and tit tegrted engineei produt,it is e sti o bbl t andle intrctin between ensubstms of multi
2、iscipliar nature1 oahieve an pima desin,aouct us betrated a a comp sytem inteadf devepingsusyms indepeently2 MD as been eabishedas anvincing conurrentdeigptimizationtechnique i elpmet ofuch comex products3,.Furtermre,t hsbeen pinted outthat,rearlsof dscipline,basically alanlyse reqr iforton thahas t
3、o be extraced fom agometr mde 5.Henc,accordng to Bow-ct 1,in orde to enabl inate esinanaland optmizain i is f vital ipotancto be alentegrae anauomed prametric geomety geneatn sytm in h designfrmewr The atomtdgeometry gneraio iseenalrfsocalle geoeyinthe-loop multdsciarydesi rmeorks,whertheCAD gmeres
4、cnserve a frameork intrtors frohereginerin tos.To eliminat nocreave ork,mehos for creatio ad t-mti genration of LCt ae bensggested by Tarian 7.Thricip of gHLCts milar to igh level primitves(HP)sggste by La occaand van Tooen8,wih excetionthaHLCs are creaed and utilized in a CADenvirnment。Otewie,bsic
5、of boh Pand HC an,ssuggeed yLa Rocca,be compard topaametr LEGOV Rbk contaning set o desn and alysis pramets Ths are prcean store in lraie,vng ngi oacompueaeth posiliy istopolgical sel t th te plat andhn mo ify themorpholoy,mening thsap,ofchemla armetically2、Mtidisiplinr Desin FrameorkMO is a“systema
6、tic approach todegn spc eplorto”1,th implemtation of wich allowst esign o mpthe intrdscipiary reltion tat exist in a system I tis wor,th Dfameworkconsit o geometry mdel,initeeemnt(F)model,dynamic odel n a basic ost del Te gometryodel provide he analysstoos with eometri。The dynammodel reuiresma prope
7、issuchasmss,te o ait,ndrta。Te E ol needshmeshed geometryf therobotas el athe orc n torquenteactibaed on reults dynaicsimlatins。igh fdety modelqire an exteve evautintm hih as be takni acont。Tisortcomingisddsed by applyinguotemodes fr teE and th CADmdels e mode are biefyreente elow.。Hgh evelCA mpte-eo
8、etry MoelTraitinaly,araeric CD is manly focusedon mrpholoicl modifiosoe get.Hower,there i-a limit toophologica aameteraion folows:Thegeometres cannt be radically mdifedIcreaed eoetricmpleiygratlicreases paameterizatio comexit。Thegeomety melf trobot igeneaed withprsavedCts,cretd i CATIA 5eear opologi
9、alysttiated wit unie interaldsig vaibles。Topooiaaraeterzaon lows deltion,modicin,ndaddiion of geomticmns whih lesoamuchgrear desgspace apture.re tesof HLCt re usedto efne the industilobot topoloicall;atm HLCt hchncld wireframerferecesreqired or pcemet forthecuator HLCTs ad ruureHLts,as seen ig2g.2 n
10、 industrialrbt(left)ada mdlrindusrialrobot(right)Theames of e fernc a ube proidefor eac HLCt instatiatin re sored ithe knowldgebae(seeAppendixA4),whh isseced throuh by the ifereceengine.I Apnix A,peudoode eampl desries ho t refeecesae rtrieed andhowhey re stoed ihknwe baseTe prcesarts btheuserdefini
11、ng t mer o-de of freedom(OF)th rt(see Fi.3)n iseeatedunil thenumber o axis(i)sequalt the us deined DF。Inoder oitantiatete frs Stutue Lt,twoDatu and two ctuatorinsanc re neede.Referne ro te wo Dt intace helprenti thesuctue in sace,wie he gemeries of the acuatoritance,oth ends the ink,are usedtocoruct
12、the actutrattacments,see i s.2 ad 3 r teremaining liks,onlone w ntace o bth datum ad cuatr HLCts a required,sine th datu ctatrnste frmadjaentnks arealay valble.Appendix.showsa psedcoexample o an taniation fuction Theirs inntiated datum HLC eied with eernce theabsolue codinat stm.heremaingdtum HLCtns
13、tacare placedin a squentl der,wherethe corintyem of prevous insns uedas rfrece fo defnngh positin in sce accoding usr nuts(see as ppdixA。3)rthemore,t tyo ech actuatorad tructe insane s user defe。-Fi.3Th high eelD telate instantation pocsSinceit is ossible to eateew HLCts in the ut led CDtol,the user
14、s are ntforced to merly coe fom th temptes availabe.ew Htsc be created,lace in the databaseand parmerically nsrte ntothe model。2。Dyaic Mol Theojetve prorn namc simltio oarobt isto valuate ssem performane,uch a predctinaccelerain and meeformance,t t als yel as oach acutdaxs,needed fr atar ifetmcalcla
15、tionsand subsquent sess lysis based on FE ca ulations。The ynmi moel n he ouli fraework-deveopedinModela uingDol,nd icotituts aseven-axis robt arbasedon te Mdelia Standad librar 8.Tdymc mode receives ut fom the eomerymoel,aswel apridngtput tohe F modl,hih iurer descried inSe。2.3.Howeer,tobetter under
16、stand uingsbwen moels,the Netnleformultin will e brielydisussed。In this frmulation,thelinkoitis and a eleation are iterativlycopted,frwar rcurvel Whetheiemat poertesar comp,the frc andtorqe interaonsbetwn he lis areomuedbacward recursly from the lat o h istlink。3 3 urrourroa ae Modele Modelo cote th
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