系统设计和补偿技术及离散系统和z变换大学毕业论文外文文献翻译及原文

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1、毕业设计（论文）外文文献翻译文献、资料中文题目：1.系统设计和补偿技术2.离散系统和Z变换3.PID控制器的介绍文献、资料英文题目:文献、资料来源：文献、资料发表（出版）日期:院（部）:专业:班级:姓名:学号:指导教师:翻译日期:2017.02.14SystemDesignanCompensationTechniquesControlsystemsaredesignedtoperformspecifictasks.Therequirementsimposedonthecontrolsystemareusuall

2、yreferredasperformanceimposedonthecontrolsystemareusuallyreferredasperformancespecifications.Theygenerallyrelatetoaccuracy,relativestabilityandspeedofresponse.Generally,theperformancespecificationsshouldnotbemorestringentthannecessarytoperformthegiventask.If

3、theaccuraryatsteady-stateoperationisofprimeimportanceinagivencontrolsystem,thenweshouldnotrequireunnecessarilyrigidperformancespecificationsonthetransientresponsesincesuchspecificationswillrequireexpensivecomponents.Weshouldrememberthatthemostimportantpartof

4、controlsystemdesignistostatetheperformancespecificationspreciselysothattheywillyieldanoptimalcontrolsystemforagivenpurpose.Inthislesson,wearegoingtobrieflyintroducethedesignandcompensationprocedureofsingle-input-single-output-(SISO),lineartime-invariant(LTI)

5、controlsystemsbythefrequencyresponseandroot-locusapproaches,Compensationisthemodificationofthemodificationofthesystemdynamicstosatisfythegivenspecifications.Settingthegainisthefirststepinadjustingthesystemforsatisfactoryperformance.Inmanycases，increasingtheg

6、ainvaluewillimprovethesteady-statebehaviorbutwillresultinpoorstabilityoreveninstability,Thenitisnecessarytoredesignthesystem(bymodifyingthestructureorbyincorporatingadditionaldevicesorcomponents)toaltertheoverallbehaviorsothatthesystemwillbehaveasdesired.Fig

7、.8.1showstheconfigurationwherethecompensatorG(s)isplacedinserieswiththeplant.Thisschemeiscalledseriescompensation.Anotherkindorcompensationisfeedbackcompensation.Generally,seriescompensationmaybesimplerthanfeedbackcompensation,Indiscussingcompensators,wefreq

8、uentlyuseterminologyasleadnetwork,andlag-leadnetwork.Ifasinusoidalinputeiisappliedtotheinputofanetworkandthesteady-stateoutputeO(whichisalsosinusoidal)hasaphaselead,thenthenetworkiscalledaleadne