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This paper proposes a power-efficient capacitor-array-based digital-to-time converter (DTC) using a constant-slope approach. Fringe-capacitor-based digital-to-analog converter (C-DAC) array is used to regulate starting supply voltage of the constant slope fed to a fixed threshold comparator. The proposed DTC consumes only 15 μW from a 1V supply, while achieving fine resolution of 103 fs when running...
This paper reports the application of a hybrid metaheuristic — a combination of Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) methods, in midscale thermal power dispatch problem with transmission losses. The hybrid technique applies ACO over output obtained by PSO to get an economic load dispatch (ELD) solution close to global optima. In the present study the hybrid technique...
This paper presents a low-power adaptive edge decision feedback equalizer (DFE) for 10 giga-bits-per-second (Gbps) serial links with 4 PAM (pulse-amplitude-modulation) signaling. Optimal tap coefficients are obtained adaptively using a sign-sign least-mean-square (SS-LMS) algorithm that minimizes the jitter of equalized data. Low-voltage-differential-signaling (LVDS) tap generators that double DFE...
A low-power and high-accuracy current driver IC is proposed for portable electrical impedance tomography (EIT) systems. The proposed IC supports active electrode configuration and has three key features. First, high output impedance current driver is implemented with phase compensation scheme through a delay-locked loop (DLL) to significantly alleviate a phase shift and a required power consumption...
This paper presents a multi-purpose built-in selftest circuit to reduce large design overhead in preparing various tests of high-speed links. The proposed circuit can be configured as a pattern generator, a pseudo-random bit sequence generator, a scrambler, a descrambler, or a snapshot, all of which are frequently used in various link tests but also require significant design effort. T o reduce the...
The basic factors and general considerations in selecting the class and means of neutral grounding for synchronous generator systems connected to electrical utility systems are provided in this guide. It also provides the suggested methods and apparatus to be used to achieve the desired grounding. These guidelines apply to both large and small generators found in electrical utility systems. Definitions...
In the view of the complex environment of high altitude areas, a solar chimney power plant experimental setup with a chimney 15 m in height and a collector 15 m in diameter was built. The temperature and velocity of air flow within the collector were tested and analyzed. The results show that the variation of air flow temperature and velocity are similar to the solar radiation. Furthermore, the energy...
Grid connection of distributed generation would have a certain impact on safe and stable operation of receiving-end network, so systematic analysis on it would be significant. The method for comprehensive assessment on effects caused by grid connection of distributed generation on power grid is presented. The assessment system is divided into steady-state operation assessment, reliability assessment,...
In order to improve the safety of the operation of the hydrogen-cooled generator and ensure the stable operation parameters of the hydrogen as the cooling medium, this paper presents a low-cost and high-performance hydrogen quality monitoring system for the hydrogen-cooled generator with ARM microprocessor as the core. The system consists of a data terminal system and a cloud monitoring platform system...
It is difficult to obtain failure data in stability analysis of long lifetime gyro such as hemispherical resonator gyro. Therefore, traditional stability analysis methods based on failure data is useless in stability analysis of long lifetime gyro. A stability analysis method based on probability statistics is proposed in this paper to solve this problem. In this method, Weibull distribution is applied...
In this paper, we present CORT, a factored concolic execution based methodology for high-level functional test generation. Our test generation effort is visualized as the systematic unraveling of the control-flow response of the design over multiple explorations. We begin by transforming the Register Transfer Level (RTL) source for the design into a high-performance C++ compiled functional simulator...
This paper discusses how to achieve high PV penetrations for a hybrid diesel-PV micro-grid via the means of a cloud forecasting system. The micro-grid control system utilizes cloud forecasts to forecast PV transients and manage online diesel generation. Simulation results for the test micro-grid showed that an array size of 2 MW achieved an energy penetration of 30.8% with «11.5 annual faults. Additionally,...
Services provided by distributed generation (DG) to power generation and transmission systems have become an urgent necessity due to increase in load demand in recent years. These services include bridging the lack of central generation, increase the reliability of the network, reduce the inactive power in the system, and improve the margin of voltage for the network. On the other hand, the use of...
Current methods for video description are based on encoder-decoder sentence generation using recurrent neural networks (RNNs). Recent work has demonstrated the advantages of integrating temporal attention mechanisms into these models, in which the decoder network predicts each word in the description by selectively giving more weight to encoded features from specific time frames. Such methods typically...
Multi-person pose estimation in the wild is challenging. Although state-of-the-art human detectors have demonstrated good performance, small errors in localization and recognition are inevitable. These errors can cause failures for a single-person pose estimator (SPPE), especially for methods that solely depend on human detection results. In this paper, we propose a novel regional multi-person pose...
Compression artifacts arise in images whenever a lossy compression algorithm is applied. These artifacts eliminate details present in the original image, or add noise and small structures; because of these effects they make images less pleasant for the human eye, and may also lead to decreased performance of computer vision algorithms such as object detectors. To eliminate such artifacts, when decompressing...
Event-driven controller is designed in this paper on the context of networked communication links. For reducing the network burden, an event generator is employed to reduce the transmitted data in network. Meanwhile, data losses on both sides of the controller are taken into account and captured by random distributions. Considering the time-varying network environment, the probability of the random...
Despite recent advances in face recognition using deep learning, severe accuracy drops are observed for large pose variations in unconstrained environments. Learning pose-invariant features is one solution, but needs expensively labeled large-scale data and carefully designed feature learning algorithms. In this work, we focus on frontalizing faces in the wild under various head poses, including extreme...
A contourn descriptor generator algorithm implemented in embedded system of new generation to obtain shape characterization of manufactured rigid objects is presented in the paper. Acquisition and processing stages to obtain information about the shape of rigid object by way of a descriptor vector are shown in order to be implemented in a single hardware piece processor embedded system to obtain parallel...
The motivation of this research arises from the design of a low scale electric generation project, where a poly-phase generator is designed to harvest the energy from static exercise machines. This article presents the development of a static power electronics scheme based on a rectifier, dc-dc converter and a voltage source inverter (VSI) that enables the efficient energy management between a variable...
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