The phase characteristics of harmonic wave of array antennas are analyzed. The harmonic wave emitting characteristics of the array antennas are achieved by the simulation the linear and planar array antennas. The arra...
详细信息
The reliable prediction of state of charge(SOC)is one of the vital functions of advanced battery management system(BMS),which has great significance towards safe operation of electric *** far,the empirical model-based...
详细信息
The reliable prediction of state of charge(SOC)is one of the vital functions of advanced battery management system(BMS),which has great significance towards safe operation of electric *** far,the empirical model-based and data-driven-based SOC estimation methods of lithium-ion batteries have been comprehensively discussed and reviewed in various ***,few reviews involving SOC estimation focused on electrochemical mechanism,which gives physical explanations to SOC and becomes most attractive candidate for advanced *** this reason,this paper comprehensively surveys on physics-based SOC algorithms applied in advanced ***,the research progresses of physical SOC estimation methods for lithium-ion batteries are thoroughly discussed and corresponding evaluation criteria are carefully ***,future perspectives of the current researches on physics-based battery SOC estimation are *** insights stated in this paper are expected to catalyze the development and application of the physics-based advanced BMS algorithms.
Aiming at the demand for predicting the effect of HF whip antenna in high-altitude electromagnetic pulse environment, by modeling the typical HF whip antenna and RF front-end circuit, and using field-path joint simula...
详细信息
Building exit as a bottleneck structure is the last and the most congested stage in building *** is well known that obstacles at the exit affect the evacuation process,but few researchers pay attention to the effect o...
详细信息
Building exit as a bottleneck structure is the last and the most congested stage in building *** is well known that obstacles at the exit affect the evacuation process,but few researchers pay attention to the effect of stationary pedestrians(the elderly with slow speed,the injured,and the static evacuation guide)as obstacles at the exit on the evacuation *** paper explores the influence of the presence of a stationary pedestrian as an obstacle at the exit on the evacuation from experiments and *** use a software,Pathfinder,based on the agent-based model to study the effect of ratios of exit width(D)to distance(d)between the static pedestrian and the exit,the asymmetric structure by shifting the static pedestrian upward,and types of obstacles on *** show that the evacuation time of scenes with a static pedestrian is longer than that of scenes with an obstacle due to the unexpected hindering effect of the static *** ratios of D/d have different effects on evacuation *** the five D/d ratios in this paper,the evacuation efficiency is the largest when d is equal to 0.75D,and the existence of the static pedestrian has a positive impact on evacuation in this *** influence of the asymmetric structure of the static pedestrian on evacuation efficiency is affected by D/*** study can provide a theoretical basis for crowd management and evacuation plan near the exit of complex buildings and facilities.
In this paper, the new test system of coplanar antenna surface wave is realized by skeletonizing two antennas at a certain distance on a metal plate, and placing two double-ridged horn antennas located in the same pla...
详细信息
Due to the imbalance of ground potential between the grounding points of various electrical equipment, current is often formed on the surface of ship, causing electromagnetic compatibility problems. It is necessary to...
详细信息
The frequency interference margin between radars is introduced and its calculating method is presented based on the radar signal detection process. The calculating results show that the frequency interference margins ...
详细信息
Photon-assisted millimeter wave system can improve real-time transmission performance of terahertz radio signals. And wireless communication is the uppermost form in nowadays communication industry. However, it is nec...
详细信息
Columnar grain structure caused anisotropy in mechanical properties,especially in elongation,is an important concern for Ti-6Al-4 V alloy fabricated by directed energy deposition(DED).Several strategies have been prop...
详细信息
Columnar grain structure caused anisotropy in mechanical properties,especially in elongation,is an important concern for Ti-6Al-4 V alloy fabricated by directed energy deposition(DED).Several strategies have been proposed to reduce anisotropy by globularizing the grains,but these conventional approaches are costly and inefficient due to challenges faced during producing the columnarβ-grain ***,understanding the impact of columnar grain-related microstructures on the anisotropic deformation behavior is still *** the recognition of the importance of grain boundary Widmannstättenαcolony(αWGB)as a grain-related microstructure,it has received limited attention in available literature on anisotropy in mechanical *** study employed in-situ induction heating during DED to controlαWGB formation,yielding three Ti-6Al-4 V samples with varyingαWGB *** deforma-tion ofαWGB and its impact on elongation in build and transverse directions were analyzed.αWGB width grew from 0.5μm to 32.4μm via diffusion-controlled growth due to reduced cooling *** deformation led to dislocation movement and accumulation,causing early failure and worsened ductile anisotropy withinα***,largerαWGB size significantly exacerbated anisotropy in *** work underscoresαWGB’s role in anisotropic deformation and offers insights for optimizing mechanical properties in DED-fabricated titanium alloys.
A standalone microgrid plays an important role in supplying power to residential and remote areas by integrating different types of distributed generation. One of the key open issues in both academic and engineering f...
详细信息
暂无评论