简介:Calibrationofaccelerometerswithimpactexcitationandreferencemethod;CalibrationofSub-lO-nmFlyingHeightUsingtheBumpResponse;COMPRESSORTESTRIGFORMEMS-BASEDTURBOMACHINERY;Designandcontrolofasphericalair-bearingsystemformulti-d.o.f,ball-joint-likeactuators;Designconsiderationforsingle-pole-typewriteheads;Designofa3DCMMwithelasticallyguidedz-axisandx,yaxiswithlessthan2mmABBEoffset
简介:ABSDESIGNANDFLYHEIGHTMODULATIONOFFEMTOSLIDERS;Achievementofnanometricaccuracywithstepper-drivenmachine;AFM/Opticalmetrologyandapplicationforheadanddisk;AIR-BEARINGDESIGNBASEDONGLOBALAPPROXIMATIONCONCEPTS;Air-bearinglinearactuatorforhighlyprecisetracking;Anactiveheadsliderusingapiezoelectriccantileverforinsituflying-heightcontrol……
简介:ACOMPARISONOFGENETICALGORITHMANDSUBREGIONAPPROACH1NTHEOPTIMIZATIONOFSLIDERAIRBEARINGFORSUB-7nmFLYINGHEIGHT;AComparisonoftheGeneticAlgorithmandtheSubregionApproachintheOptimizationofSliderAirBearingsforSub-7-nmFlyingHeight;ALOWTEMPERATURETURBO-BRAYTONCRYOCOOLERFORSPACEAPPLICATIONS;ANEWHELIUMGASBEARINGTURBOEXPANDER;Anewtypeofdisplacementsensorwithpneumaticfeedbacksystem……
简介:空调系统是乘用车一个主要能量消耗部件。相比于传统乘用车,电动汽车缺少用于乘员舱加热的足够的余热,主要采用电能实现乘员舱冬季加热和前挡风玻璃的除霜除雾功能,因而在低温环境下,电动汽车用于乘员舱加热的电能消耗尤为明显,大幅度缩减电动车续驶里程。另外,对于电动汽车,动力电池可能需要在高温环境下进行冷却。相反,在低温环境下,如果采用热泵空调系统,动力电池和动力电子设备的余热则可被回收用于乘员舱加热。从不同方面对车用空调系统采用热泵技术和采用电加热技术进行优势对比。最后基于电动汽车全年的空调系统能量消耗,对两种空调暖通系统(HVAC)拓扑结构进行比较,介绍电动汽车热泵空调系统的节能效果。