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The ship-rocking is a crucial factor which affects the accuracy of the ocean-based aerospace vehicle measurement. Here we have analysed groups of ship-rocking time series in horizontal and vertical directions utilizing a Hilbert based method from statistical physics. Based on these results we could predict certain amount of future values of the ship-rocking time series based on the current and the...
The electrical resistivity of cemented soil is the basic parameter for describing its physical property, and closely related with its engineering mechanic indexes. It may be used to reflect the pollution characteristic of cemented soil. The relations between various parameters of cemented soil polluted by different vitriol solution concentration were studied. The result indicated that the electrical...
In this letter, we analyze the nonsaturating upturns of capacitance under strong accumulation bias in MOS capacitors with high-k dielectrics. By comparing the electrical properties of dielectric samples with and without HfO2 and by varying the ambient temperature, it is found that the conduction through the shallow trap levels in the HfO2 bulk produces not only a steady-state current but also a dynamic...
Si-tunneling field effect transistors (TFETs) with a record Ion >100 μA/μm and high Ion/Ioff ratio (> 105) at Vds=1V are reported. Using an optimal spike and millisec flash anneal coupled with an engineered source-gate overlap through a gate-last process, Si TFETs have been demonstrated with 10 to 1000 times greater current than previously reported. The devices exhibit negative differential...
We report a novel tunneling field effect transistor (TFET) fabricated with a high-k/metal gate stack and using nickel silicide to create a special field-enhancing geometry and a high dopant density by dopant segregation. It produces steep subthreshold swing (SS) of 46 mV/dec and high ION/IOFF ratio (~108) and the experiment was successfully repeated after two months. Its superior operation is explained...
Active power filter(APF) based on power electronic technology is currently considered as the most competitive equipment for mitigation of power harmonics.Usually, the configuration of APF is referred to one based on voltage source inverter due to easy implementation.Researches on APF mainly focus on two fields: topologies and control strategies. The topology of APF is decided in the harmonics current...
In this paper, a digital controlled battery charger based on microprocessor for high power UPS application is presented. A two-stage charging strategy along with the control method is analyzed. A new DC current measuring method using current transformer is put forward in this design, which can both reducing the cost of current sensor component and fulfilling the requirement of current detecting, simply...
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