A capacitive wireless power transfer (C-WPT) system uses an electric field to transmit power through a physical isolation barrier which forms a pair of ac link capacitors between the metal plates. However, the physical dimension and low dielectric constant of the interface medium severely limit the effective link capacitance to a level comparable to the main switch output capacitance of the tra...

Wireless power transfer (WPT), which transfers energy without a physical link, has recently received significant research interest. Due to the advantages of small dimension, low operation frequency, and transmission loss, magnetoelectric WPT (ME-WPT) been shown be promising technology for internet things (IoT) implantable medical device (IMD) applications. However, ME-WPT requires direct-curren...

Deep learning has achieved significant advances in the fault diagnosis of rotating machinery. However, it still suffers many challenges such as various working conditions, large environmental noise interference and insufficient effective data samples. Signal time–frequency analysis feature transfer methods can help solve these problems. Combining wavelet packet transform (WPT) multi-kernel maxi...

Abstract Due to its low latency and energy consumption, edge computing technology is essential in processing multi-source data streams from intelligent devices. This article investigates a mobile network aided by wireless power transfer (WPT) for streams, where the channel parameters characteristic of stream are varied. Moreover, we consider practical communication scenario, devices with limite...

In this paper, we propose a fast multi-resolution transform using wavelet packet transform (WPT). This fast algorithm switches between a transform coder and a subband coder on user discretion. The proposed algorithm uses discrete approximate trigonometric expansions, which have previously been proposed for exploiting spatial and spectral correlation in multidimensional signals. Specifically, we...

In this study, vibration based non-destructive testing (NDT) technique is adopted for assessing the condition of in-service timber pole. Timber a natural material, and hence captured broadband signal (induced from impact using modal hammer) greatly affected by uncertainty on wood properties, structure, environment. Therefore, advanced processing essential in order to extract features associated...

We propose a new approach to improve the performance of speech enhancement techniques based on wavelet thresholding. First, space–adaptation of the threshold is obtained by extending the principle of the level–dependent threshold to the Wavelet Packet Transform (WPT). Next, the time–adaptation is introduced using the Teager Energy Operator (TEO) of the wavelets coefficients. Finally, the time–s...

With the improvement of technology, demand for electrical power continues to deepen. Wireless Power Transfer (WPT) technology can transmit without using physical media such as cables, and it has advantages isolation, convenience, safety. At present, miniaturization secondary side is an emerging trend WPT systems, which analyzed in this paper. By introducing interleaved boost converter front sta...

A thorough analysis of slotted ground plane (SGP)-based resonators designed for wireless power transfer (WPT) applications is reported in this paper. For the first time, some new findings that relate a resonator and WPT performance metrics to slot shape, quality factor (Q), radiation loss are presented very comprehensive manner. As case study, single-loop polygonal shape was considered carry ou...