控制系统的介绍英文翻译

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1、IntroductiontoControlSystem1.1HISTORICALPERSPECTIVEThedesiretocontroltheforcesofnaturehasbeenwithmansinceearlycivilizations.Althoughmanyexamplesofcontrolsystemsexistedinearlytimes,itwasnotuntilthemid-eighteenthcenturythatseveralsteamengine,andperhapsthemostnoteworthyinventionwasth

2、espeedcontrolflyballgovernorinventedbyJamesWatt.Theperiodbiginnignabouttwenty-fiveyearsbeforeWorldWarTwosawrapidadvancesinelectronicsandespeciallyincircuittheory,aidedbythenowclassicalworkofNyquistintheareaofstabilitytheory,Therequirementsofsophisticatedweaponsystems,submarines,ai

3、rcraftandthelikegavenewimpetustotheworkincontrolsystemsbeforeandafterthewarTheadventoftheanalogcomputercoupledwithadvancesinelectronicssawthebeginningoftheestablishmentofcontrolsystemsasascience.ByThemid-fifties,theprogressindigitalcomputershadgiventheengineersanewtoolthatgreatlye

4、nhancedtheircapabilitytostudylargeandcomplexsystems.Theavailabilityofcomputersalsoopenedtheeraofdata-logging,computercontrol,andthestatespaceofmodernmethodofanalysis.Thesputnikbeganthespaceraceandlargegovernmentalexpendituresinthespaceaswellasmilitaryeffort.Duringthistime.circuits

5、becameminiaturizedandlargesophisticatedsystemscouldbeputtogetherverycompactlytherebyallowingacomputationalandcontroladvantagecoupledwithsystemsofsmallphysicaldimensions.Wewerenowcapableofdesigningandflyingminicomputersandlandingmenonthemoon.Thepostsputnikagesawmucheffortinsystemop

6、timizationandadaptivesystems.Finally,therefinementofthechipandrelatedcomputerdevelopmenthascreatedanexplosionincomputationalcapabilityandcomputer-controlleddevices.Thishasledtomanyinnovativemethodsinmanufacturingmethods.suchascomputer-aideddesignandmanufacturing,andthepossibilityo

7、funprecedentedincreasesin11industrialproductivityviatheuseofcomputer-controlledmachinery,manipulatorsandrobotics.Todaycontrolsystemsisasciencewiththeartstillplayinganimportantrole.Muchmathematicalsophisticationhasbeenachievedwithconsiderableinterestinoptimalcontrolsystem.Themodern

8、approach,havingbeenestablishedasa