用前向神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)純飽和液體的物性.pdf

1、廣西大學(xué)碩士學(xué)位論文用前向神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)純飽和液體的物性姓名：黃瑞華申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：韋藤幼2001.5.1￡墮查蘭堡主蘭笪絲苧!旦塑塑塑絲嬰竺堡型絲塑塑!!苧塑塑絲生——————一USINGFEEDFORWARDNEURALNETWORKPREDICTPURESATURATEDLIQUID’SPHYSICALPRoPERTYABSTRACTSaturatedliquid’Sthermodynamicsandtra

2、nsferpropertyaleindispensabletochemicalengineeringespeciallytherelevancyofphysicalpropertyandtemperatureiSimportantinchemicalresearchandproductionAtpresent，becausetherealemanyshortagesinvariousestimatedmethods，usingArtif

3、icialNeuralNetwork(ANN)topredictrelationshipofphysicalpropertyandtemperaturearepresentinthispaperInthispaperwestudylearningmethodofusingANNmodeltopredictrelationshipofphysicalpropertyandtemperatureChoosinguniversalthreel

4、ayerfeedforwardANNmodelasworknetworkputtingforwardanimprovedlearningarithmeticvizDampedNewtonMethodatthesametimewestudymeasurestoimproveprecisionexperimentresultsshow：lesseningnon—linerextentoffunction；choosingappropriat

5、eworkrange；appropriatemiddlecellnumberandsystematicallyorganizingdatacanquickenconvergenceofnetworkandimproveestimationUsingANNtoestimatethermodynamicspropertyofsaturatedliquid，andreceivegoodresult，usingtrainednetworktop

6、redictstylebook，theaverageestimatederrorofheatcapacity、heatofevaporation、densityandsteampressurearerespectively00123％、0018％、0022％、O125％Westudyrelationshipoftransferpropertyandtemperaturefurther，forthedataofstylebook，thea

7、verageestimatederrorofcoefficientofheatconductivity、surfacetension、viscosityarerespectivelyO089％、0037％、O125％comparingtheestimateddata、Ⅳitlltheoriginalliteratedatatheyarenearlyidenticalthisresultshowsthatitissuccessfultou

8、singANNtopredictthephysicalpropertyAtlast，inordertoconveniencequeryandestimation，wedevelopPetroleumChemicalPhysicalPropertyEstimatedSystem(PCPPES)UserCanqueryandestimatephysicalpropertyaccordingtoneedsKeyword：ArtificialN