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ID:57666399
大小:649.00 KB
页数:12页
时间:2020-08-31
《信号与系统复习.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、SignalsandSystemsSectionIFundamentalsContinuoussignalsanddiscretesignalsPeriodicsignalsandaperiodicsignals★Transformationsoftheindependentvariable★Theunitimpulseandunitstepfunction★Linearity,timeinvariance,causalityandstability★PropertiesofunitimpulsefunctionSec
2、tionIILTISystemsDescribesystemswithdifferentialanddifferenceequationsZero-stateandzero-inputresponse★Concept★Solution:LaplacetransformResponsestounitimpulseandunitstepfunctionsConvolutionintegralandconvolutionsumCalculationandgraphicdemonstration★Convolutionandu
3、nitimpulseSectionIIITheFourierTransformRepresentperiodicsignalswithFourierSeries★Why?Spectrumofperiodicsignals;RepresentaperiodicsignalswithFourierTransformConvergenceofFSorFTFTofsomespecialsignals★Unitimpulse,rectangularpulse,exponentialsignal…★PropertiesofFTDu
4、ality,scaling,shiftintimeandinfrequency,convolution,differentialintime★FTofperiodicsignals★FrequencyresponseofLTIsystems★Idealow-passfilterTimedomainandfrequencydomain★SamplingSectionIVTheLaplaceTransformWhatistheLaplaceTransformofaconcernedsignal?★WhatistheROCo
5、ftheLT?★PropertiesofROCForcausalandstablesystemsPropertiesofLT★DifferentiationintheTime-domain,Initialvalue★ILTbypartial-fractionalexpansion;UnilateralLT★SolvingDifferentialequations☆Systemfunctionins-domain☆TherelationshipbetweenLTandFTSectionVTheZ-Transform★Th
6、eZ-transformandcorrespondingROCThepropertiesofROCThepropertiesoftheZT★TheIZTbypartial-fractionalexpansion★SolvingdifferenceequationsbytheZT☆SystemsfunctionsintheZ-domain☆FrequencyresponseindiscretesystemsThanksforyourcooperationinthissemester!
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