简介:Accordingtothestudyonseat-backcurvesaboutdifferentpeople,themethodthatusingtwoarc-shapedroofstogivebacksupportingforceofthehumanbodyisproposed.Throughacleverdesignapplicationofpiezoelectricsensor,microcontroller,motors,andarc-shapedroofsformaclosedloopcontrolsystem.Throughthedesignofhorizontalandverticaladjustmentmechanism,aflexibleandadaptivemulti-dimensionalbackcanreducetheharmtohumanspinewhichcausedbypoorpostureandsedentarylifestyle.ModelbuildingandstressanalysisaredonebyInventorsoftwaretoverifythemechanismofstrength.
简介:100piecesof26650-typeLithiumironphosphate(LiFePO4)batteriescycledwithafixedchargeanddischargeratearetested,andtheinfluenceofthebatteryinternalresistanceandtheinstantaneousvoltagedropatthestartofdischargeonthestateofhealth(SOH)isdiscussed.Abackpropagation(BP)neuralnetworkmodelusingadditionalmomentumisbuiltuptoestimatethestateofhealthofLi-ionbatteries.Theadditional10piecesareusedtoverifythefeasibilityoftheproposedmethod.Theresultsshowthattheneuralnetworkpredictionmodelhaveahigheraccuracyandcanbeembeddedintobatterymanagementsystem(BMS)toestimateSOHofLiFePO4Li-ionbatteries.
简介:王老太太买完空调后,一个没留神,空调被出租车司机拉跑了,仅仅这么一件小事,便引出了海尔的“零距离”概念——“零距离”并非只具有比喻意义,它其实预示着一种崭新的生产和销售模式