简介：ForTDMAMACprotocolsinwirelesssensornetworks(WSNs),redundancyandretransmissionaretwoimportantmethodstoprovidehighend-to-endtransmissionreliability.Sincereliabletransmissionswillleadtomoreenergyconsumption,thereexistsanintrinsictradeoffbetweentransmissionreliabilityandenergyefficiency.Foreachlink,wenamethenumberofitsreservedtimeslotsineachMACsuperframeasareplicatorfactor.Inthefollowingpaper,weproposeareliability-lifetimetradeoffframework(...

简介：Thispaperpresentsasymmetriccooperationstrategyforwirelesssensornetworks,aimingtoimprovethetransmissionefficiencyofthenetwork.Thecooperationstrategyisimplementedbypartitioningthenodesintoseveralcooperativegroups.Then,ineachgroup,theoptimalcooperativebandwidthallocationisobtainedbasedonRaiffa-KalaiSmorodinskybargainingsolution(RBS).Numericalresultsshowthatthesymmetriccooperationstrategycanimprovethesensornode'stransmissionefficiencydramatically.

简介：当前的传感器是在正式就职马达的控制系统的关键元素之一。反映马达操作地位的变量的精确测量是否能被做，将直接在马达系统上并且因此影响控制效果传感器差错的及时、精确察觉是必要的。这份报纸向前根据正式就职马达的数学模型带剩余产生和差错察觉的一个observerbased方法。当非线性的部分是否满足Lipschitz条件，不限制观察员设计，如此的一个观察员的申请被扩展。同时，在柔韧的错误之间的矛盾和差错敏感也被解决。如此的方法的正确性和有效性被在也阐明工程实践的模仿的差错上的试验性的测试验证。

简介：Thepaperproposesacooperativedistributedtargettrackingalgorithminmobilewirelesssensornetworks.Therearetwomaincomponentsinthealgorithm:distributedsensor-targetassignmentandsensormotioncontrol.Inthekeyideaofthesensor-targetassignment,sensorsareconsideredasautonomousagentsandthedefinedobjectivefunctionofeachsensorconcentratesontwofundamentalfactors:thetrackingaccuracyandthetrackingcost.Comparedwiththecentralizedalgorithmandthenoncooperativedistrib...

简介：Ahybridmethodologyisproposedforuseinlowpower,safetycriticalwirelesssensornetworkapplications,wherequality-of-serviceorientatedtransceiveroutputpowercontrolisrequiredtooperateinparallelwithradiofrequency-basedlocalization.Thepracticalimplementationisframedinanexperimentalproceduredesignedtotrackamovingagentinarealisticindoorenvironment.Anadaptivetimesynchronizedapproachisemployedtoensurethepositioningtechniquecanoperateeffectivelyinthepres...

简介：在这份报纸，一个新可靠H无穷过滤器设计问题与传感器浸透和失败为连续时间的系统的一个班被建议。注意集中于分析和一份完整的订单的合成问题可靠H无穷过滤器以便过滤错误动力学与保证骚乱拒绝变细水平是asymptotically稳定的。加过滤器从原来的系统获得的过滤错误动力学能被一个线性系统与扇区建模，这被显示出围住的非线性。设计条件以一套线性矩阵不平等(LMI)的答案被给。这些条件然后与LMI限制处于一个凸的优化问题被考虑以便设计一个最佳的可靠H无穷过滤器。一个数字例子被给说明建议结果的有效性。

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

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...

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。

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.