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1、FUNdaMENTALSofDesignTopic5PowerTransmissionElementsI©2008AlexanderSlocum1/1/20085-0PowerTransmissionElementsIciencyofthepowertransmissionsystem.Accordingly,thischapterwillfocusonsomeoftheelementsoftrans-Therearemanywaystostoreorgeneratepower,missionsystems,suchaspulleysandwheels,beltsa
2、ndbutallareuselesswithoutatransmissiontotransmitthecouplings.Chapter6willdiscussscrewsandgears.powerfromasourcetotheplacewhereitisneededinaChapter7willdiscussselectionofoptimaltransmissionforminwhichitcanbeused.Furthermore,thebasicratiosandactuatorsthatusetheelementsinChapters5physicso
3、fpowergenerationandtransmissionindicateand6.thathighspeedandlowtorquearemoreefficienttocre-atethanlowspeedandhightorque.Theformerisgen-Thereareanamazingarrayoftransmissioncom-eratedbyhighvoltageandlowcurrentwhichismoreponents,andengineersneedtobecomefamiliarwitheconomicalthanlowvoltage
4、andhighcurrent.Oncewhatisavailable,andwhatnicheeachelementoccu-again,atransmissionisoftenrequiredtotransformpies.ByapplyingFUNdaMENTALprinciplesandpowerintoausefulform.Butwhatcombinationofele-Maudslay’sMaxims,youwillbetterbeabletoseparatementsprovidesthebestprice/performance?Forexam-ma
5、rketinghypefromengineeringrealitywhenyoucon-ple,howshouldhighspeedlowtorquerotarymotionsider:fromamotorbetransformedintolowspeed,highforcelinearmotion?•Kinematics:motion,accuracy,space•Dynamics:forces,speeds,lifeBydesigningmachinesinamodularfashion,an•Economics:design,build,maintaineng
6、ineercanassumepowerwillbeprovidedinacertainmanner.Theengineercanthenproceedwiththedesignofthemodulesandelementsthatwilltransmitanduti-Bycreatingmachinesforrobotdesigncompeti-lizethepower.Thisalsoallowssomeflexibilityinopti-tions,youwillhavetousefundementalprinciplestomizingthepowersour
7、ceasthedesignprecedes.Forhelpcreatethetransmissionsyouneedfromverybasicexample,initialcalculationsmayhaveindicatedthataelementswhichwillgreatlyhoneyourdesignskills.certainsizemotorwasrequired,butindesigningtheRemembertolookattheworldaroundyoufromgardenpowertransmissionsystem,themotor
