资源描述：
《12春电大机电控制工程基础作业习题答案2》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、12春电大机电控制工程基础作业习题答案2Thesecondchapterof〃thebasicofelectromechanicalcontrolengineering〃istheanswertotheproblemofthepaperWhatisamathematicalmodel?Themathematicalexpressionoftherelationbetweenthevariablesinthesystemiscalledthemathematicalmodelofthesystem・correctWh
2、atarethemainmethodsofestablishingamathematicalmodelforthecontrolsystem?Themainmethodsofestablishingthemathematicalmodelofcontrolsystemareanalyticalandexperimenta1.Whatisthetransferfunctionofthesystem?Inzeroinitialconditions,theratiooftheLaplacetransformoftheou
3、tputtotheLaplacetransformoftheinputiscalledalinearsystem(orcomponent)Recursivefunctions・TheopenlooptransferfunctionoftheunitnegativefeedbacksystemisG(s),andwhatistheclosedlooptransferfunction?TheopenlooptransferfunctionoftheunitnegativefeedbacksystemisG(s),and
4、theclosedlooptransferfunctionisGG)s)Whatisthecanonicalformofthesecondorderclosedloopsystem?Whatdoesthevariablemean?Thestandardtypeofthesecondorderclosedloopsystemiswn2overs2plus2xwnspluswn2),whichiscalledthedampingratioofthesystem,wnUndampedself-oscillationang
5、ularfrequency.Whatarethefunctionsofthetransferfunctionofthedifferentialandintegralparts?Differential:G(s)二s.Theintegralpart()=1Gss.Theoscillationsarecomposedoftwoformsofenergystorage,andthestoredenergyisconverted,andtheoutputhasoscillationsQuality・Theoutputoft
6、heoscillationisxc,theinputquantityisxr,andwhatistheequationofmotionandthetransferfunction?EquationofmotionT2DDT2x2C+TkDXDTC+xc二KxrThetransferfunctioniszeroK.G(s)二22TsTk+s+1A,judgment,Thetransferfunctiononlyhastodowiththesystem'sstructuralparameters,nottheoutpu
7、tquantityortheinputquantity・correctTherearetwomethodsforlinearizationofnonlinearfunctions:onemethodistoignorenon-linearfactorsundercertainconditions・OntheotherOnewayisthetangentmethod,orthesmalldeviationmethod・correctInautomaticcontrolsystems,mathematicalmodel
8、susedtodescribetherulesofthesystemhavemanydifferentforms,insingleinput,Intheclassiccontroltheoryofsingleoutputsystem,thecommonmodelhasdifferentialequation,transferfunction,dynamics
