简介：Duetothelimitationofenergyresources,energyefficiencyisakeyissueinwirelesssensornetworks(WSNs).Clusteringisprovedtobeanimportantwaytorealizehierarchicaltopologycontrol,whichcanimprovethescalabilityandprolongthelifetimeofwirelesssensornetworks.Inthispaper,anenergy-drivenunequalclusteringprotocol(EDUC)forheterogeneouswirelesssensornetworksisproposed.EDUCincludesanunequalclusteringalgorithmandanenergy-drivenadaptiveclusterheadrotationmetho...

简介：Magneticsensorarraysareproposedtomeasureelectriccurrentinanon-contactway.Inordertoachievehigheraccuracy,signalprocessingtechniquesformagneticsensorarraysareutilized.Simulationtechniquesarenecessarytostudythefactorsinfluencingtheaccuracyofcurrentmeasurement.Thispaperpresentsasimulationmethodtoestimatetheimpactofsensingareaandpositionofsensorsontheaccuracyofcurrentmeasurement.Severalerrormodelsarebuiltuptosupportcomputer-aideddesignofmagneticsensorarrays.

简介：自从它为决策和控制打基础，州的评价在许多真实应用程序起一个不能替代的作用。这份报纸为一个基于竞争的不可靠的无线网络学习多传感器评价问题。在每次走，仅仅，一个传感器能由于潜在的竞争和碰撞与基础车站交流。另外，自从无线隧道是不可靠的，数据包可以在传播期间被失去。一个新奇的包到达模型被建议它同时考虑上述二个问题。无线传感器网络(WSN)的二种情形被考虑：传感器直接播送未加工的大小，传感器相反送本地评价。基于获得的包到达模型，在基础车站方面的评价的必要、足够的稳定性条件被为两种网络情形提供。特别地，所有提供的稳定性条件被简单不平等以包到达率表示并且光谱系统矩阵的半径。他们与存在相关结果的关系也被讨论。最后，建议结果被监视原型系统的模拟例子和环境表明。

简介：Reliabilityandreal-timerequirementsbringnewchallengestotheenergy-constrainedwirelesssensornetworks,especiallytotheindustrialwirelesssensornetworks.Meanwhile,thecapacityofwirelesssensornetworkscanbesubstantiallyincreasedbyoperatingonmultiplenonoverlappingchannels.Inthiscontext,newrouting,scheduling,andpowercontrolalgorithmsarerequiredtoachievereliableandreal-timecommunicationsandtofullyutilizetheincreasedbandwidthinmultichannelwirelesssensorne...

简介：Basedonthemulti-sensoroptimalinformationfusioncriterionweightedbymatricesinthelinearminimumvariancesense,usingwhitenoiseestimators,anoptimalfusiondistributedKalmansmootherisgivenfordiscretemulti-channelARMA(autoregressivemovingaverage)signals.Thesmoothingerrorcross-covariancematricesbetweenanytwosensorsaregivenformeasurementnoises.Furthermore,thefusionsmoothergiveshigherprecisionthananylocalsmootherdoes.

简介：Duetotheenergyandresourceconstraintsofawirelesssensornodeinawirelesssensornetwork(WSN),designofenergy-efficientmultipathroutingprotocolsisacrucialconcernforWSNapplications.Toprovidehigh-qualitymonitoringinformation,manyWSNapplicationsrequirehigh-ratedatatransmission.Multipathroutingprotocolsareoftenusedtoincreasethenetworktransmissionrateandthroughput.Althoughlarge-scaleWSNcanbesupportedbyhighbandwidthbackbonenetwork,theWSNremainsthebot...

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简介：基于结构化的内核主管部件，分析(KPCA)为非线性的进程被建议的一个新传感器差错诊断方法。由在变量的子集上执行KPCA，一套结构化的剩余，即，KPCA的放大力量，能以象部分PCA的一样的方法被获得。结构化的剩余在为传感器差错诊断填写一个隔离计划被利用，根据一个适当地设计的发生矩阵。传感器差错敏感和批评敏感被定义，基于哪个一个发生矩阵优化算法被建议改进结构化的KPCA的表演。建议方法的有效性在模仿的连续搅动的坦克反应堆(CSTR)上被表明过程。

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简介：AMonteCarloAnalysisofnodesdeploymentforlarge-scaleandnon-homogeneouswirelesssensornetworks,hasbeendone.Throughsimulationsofrandomdeploymentsofnodesoverasquareareausingdifferentdensities,assumingthatournetworkiscomposedbyAnchornodes(specialsensorswithknownposition)andsimpleSensornodes,thelatteraresupposedtoestimatetheirownpositionafterbeingplacedwithinthecoverageareawiththeminimumAnchornodesneededto'feed'themwiththenecessaryinformation.Thegoalisthentoassistdecision-makersinselectingamongdifferentalternativestodeploythenetworks,accordingtoresourcesfeaturesandavailability,hencethismethodprovidesanestimatevalueofhowmanyAnchornodesshouldbedeployedinagivenareatotriggerthelocationalgorithminthegreatestpossiblenumberofSensornodesinthenetwork.

简介：Theproblemofair-fuelratio(AFR)controloftheportinjectionsparkignition(SI)engineisstillofconsiderableimportancebecauseofstringentdemandsonemissioncontrol.Inthispaper,thestaticAFRcalculationmodelbasedonin-cylinderpressuredataandontheadaptiveAFRcontrolstrategyispresented.Themodelutilisestheintakemanifoldpressure,enginespeed,totalheatrelease,andtherapidburnangle,asinputvariablesfortheAFRcomputation.Thecombustionparameters,totalheatrelease,andrapidburnangle,arecalculatedfromin-cylinderpressuredata.ThisproposedAFRmodelcanbeappliedtothevirtuallambdasensorforthefeedbackcontrolsystem.Inpracticalapplications,simpleadaptivecontrol(SAC)isappliedinconjunctionwiththeAFRmodelforport-injectedfuelcontrol.TheexperimentalresultsshowthattheproposedmodelcanestimatetheAFR,andtheaccuracyoftheestimatedvalueisapplicabletothefeedbackcontrolsystem.Additionally,theadaptivecontrollerwiththeAFRmodelcanbeappliedtoregulatetheAFRoftheportinjectionSIengine.

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