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Energy efficiency is considered a critical technical parameter for the performance evaluation, sizing, and design of control strategies of grid-connected battery systems. Therefore, measurement of the energy efficiency of grid-connected battery systems is necessary. In this paper, the experimental evaluation and measurement of the energy efficiency of a small-scale grid-connected NiMH battery system...
Active center of gravity control can transfer fuel among many fuselage fuel tanks to effectively optimize aircraft center of gravity and gain the potential economic performance benefits. In-flight possible failures in the fuel system may generate direct influences on aircraft center of gravity control. The aim of this article is to investigate the influence of partial fuel transfer line leak on the...
Infrared videos from transmission line inspection of UAV have a large amount of data with low SNR (Signal to Noise Ratio). Identifying heat defects automatically using infrared videos is difficult and inefficient. In this paper, an advanced method is proposed. Firstly, points with excessive value of the component regions according to conductors are analyzed in their neighbors to obtain defect points...
Spectrum prediction, as one enabling technique for dynamic spectrum access (DSA), has recently been received ever-increasing research attention. Most related studies (explicitly or implicitly) assume that spectrum prediction is useful for DSA. However, it does't fundamentally clear when spectrum prediction is really beneficial. To address this issue, this paper firstly provides a high-level review...
This paper presents the investigation of the effects of Silicon-Carbide Schottky Barrier Diodes (SiC SBDs) on the switching transient performance of a SiC MOSFETs-based Bidirectional Switching Power Pole (BSPP). The investigation was focused on the contribution of the SiC SBDs in reducing the overshoot in the drain current when they are connected as freewheeling diodes. A double pulse test (DPT) is...
Aircraft center of gravity control is an important technology to gain potential performance benefits. In-flight center of gravity control is usually based on a fuel transfer system which enables fuel to be transferred among fuselage fuel tanks and then adjust aircraft center of gravity. The aim of this article is to systematically investigate the influences of partial fuel pump failures on the CG...
Spectrum data, which is usually characterized by many dimensions, such as location, frequency, time and signal strength, presents formidable challenges in terms of acquisition, processing and visualization. In practice, a portion of spectrum data entries may be unavailable due to the interference during the acquisition process or the compression during the sensing process. However, the completion...
Aircraft centre of gravity (C.G.) is important for aircraft safety and performance. This paper proposes the use of Gaussian process regression (GPR) models for the estimation of the C.G. location of fixed-wing aircraft. The major benefit of using a GPR model is that it is a data-based approach explicitly tackling uncertainties caused by the quality and quantity of the data as well as sensor measurement...
In this paper, the Motion Filter for moving target tracking detection is modified for UWB(ultra-wideband) TWR (through wall radar). A modification of the tracking point cohesion method for strongly offset targets is proposed as well. The configuration of the TWR prototype is described and moving target detection experiment behind wall is performed and the measured data is obtained to be analyzed....
In this paper, a wall parameters measurement method is proposed for UWB(ultra-wideband) TWR (through wall radar). Then a wall compensation cross-locating detection method with impulse UWB radar is proposed as well to locate moving human. The configuration of the TWR prototype is described and moving target detection experiment behind wall is performed and the measured data is obtained to be analyzed...
To improve the precision of reliability assessment on shipborne weapon, the stochastic on environment, function, status, evolvement of shipborne weapon were studied, and a synthetic reliability assessment method for shipborne weapon based on dynamic population statistics was proposed. According to the character of the weapon system, the theory of dynamic population statistics was introduced to describe...
This paper is an overview of low dielectric constant (low-k) materials developed for advanced interconnects and also presents recent innovative solutions for integration of ultra low-k dielectrics in ULSI devices. The innovative approaches include exploration of new candidate materials and technological solutions for interconnects integration in advanced technology nodes.
Vehicle detection has been applied in many fields, such as intelligent transportation, video surveillance, driving assistance system and so on. In the case of fine weather, the state-of-the-art vehicle-detection systems may achieve good performance. However, the performance has a substantial decline in bad weathers, such as fog, night and so on. Therefore, improving the performance of vehicle-detection...
The local features or the inner information of the signs are used in the most traffic sign recognition(TSR) systems for recognition. Such as histograms of oriented gradients (HOG), local binary pattern histogram (LBP), scale-invariant feature transform (SIFT), and so forth. However these features in the treatment of the rotation, strongly illumination, and deformation situations still has limitations...
With the security situation in Cyberspace constantly becoming worse, Cyber threat detection has attracted a lot of researching attentions. In this paper, existing detection technologies are firstly reviewed. Secondly, a framework of capturing the abnormal traffic of botnets is proposed. Major modules and key detection techniques are presented at the same time. The hidden threat detection in physically...
The paper focuses on the communication mechanism of butterfly mating optimization. The functions and influence facts of UV update, distribution and local mate selection are analyzed. The pattern of the binary array model of half wave oscillator is also calculated by butterfly mating optimization, and the simulation results also point the peak value of main lobe. Compared with the operation results...
for improving the present situation in the quality detection of plate making product line, a simplified homocentric square filter (SHSF) is proposed and implemented based on machine vision. Firstly, a hardware platform including camera, lens, light source, and encoder is designed to acquire high quality images. In order to automatically detect defects from the acquired images, the SHSF is designed...
The computer-aided diagnostic (CAD) system can greatly influence the early detection of lung cancer in radiographs and computed tomography (CT) images. And the automatic nodule detection plays an important role in the CAD systems. This paper proposed a new enhancement filter (3D multi-scale Block LBP Filter) to detect the nodules in the lung regions. By taking advantages of the nodule regions' pixel...
In order to obtain the influence of metallic particles on the insulating performance of vegetable insulating oil, copper particles were chosen to contaminate the vegetable insulating oil. The AC breakdown voltage of rapeseed insulating oil with different copper particle concentrations was measured. The dielectric properties i.e. relative permittivity, dielectric loss tangent and volume resistivity...
The dielectric properties of transformer oil are greatly threatened by particles especially the metallic particles. In order to obtain the influence of metallic particles on frequency domain spectroscopy (FDS) of mineral oil, we chose copper particles to contaminate the mineral oil artificially. The dielectric properties such as relative permittivity, dielectric loss tangent and volume resistivity...
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