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This paper presents a method to calculate the core losses in SiFe laminations under magnetizations with DC bias and harmonics. DC bias is usually generated by the ground return current of high voltage direct current (HVDC) system intrude into the windings of neutral-grounded transformers, which leads to increase of harmonics and core loss. For accurate calculation of core losses under DC bias, the...
This paper presents a model for scheduling resources in a mobile photo enforcement (MPE) program. An MPE program deploys operators driving vehicles equipped with radar and photo equipment to roadway locations where speeding and collision problems are significant. We developed a binary integer linear programming model to allocate MPE shifts over the course of a month to selected enforcement locations...
A variety of applications (App) installed on mobile systems such as smartphones enrich our lives, but make it more difficult to the system management. For example, finding the specific Apps becomes more inconvenient due to more Apps installed on smartphones, and App response time could become longer because of the gap between more, larger Apps and limited memory capacity. Recent work has proposed...
This paper addresses one of the most advanced technologies that meet the demand for the miniaturization of modules and devices with increased performance. In this paper, the glass-based inductor whose Q factor is up to 60 can be prepared by picking glass as the substrate and using the trough glass via technology to form the three-dimensional glass inductor to reduce MOS parasitic capacitor losses...
In this paper, for a silicon-based fan-out package, through the method of finite element simulation, simulated the distribution of residual stress of the passivation layer after curing process, and analyzed the influence of the change of filling rate and the chip thickness to the passivation layer stress. The simulation results show that the maximum stress distribution on the passivation layer fill...
Driving safety and traffic efficiency have always been the research focuses for signalized intersection. This study proposes a braking assistance algorithm, which is developed to help driver brake with a smooth braking process and appropriate stopping distance at signalized intersection as human driver does. The system is required to take human driver's individual differences into consideration. Thus,...
The Halbach array is applied in the skewed brushless DC motor for improving electromagnetic torque. The paper analytical calculate the open circuit field and the armature field in the motor with Halbach arrays. There are two types in the Halbach arrays, one is each pole with two segments of magnet(1P2s) and another is each pole with three segments of magnet(1P3s). The electromagnetic torque is calculated...
Now-a-days security is a challenging task in different types of networks, such as Mobile Networks, Wireless Sensor Networks (WSN) and Radio Frequency Identifications Systems (RFIS) etc, to overcome these challenges we use sincryption. Signcryption is a new public key cryptographic primitive that performs the functions of digital signature and encryption in single logical step. The main contribution...
This paper presents a rotary table-mounted synthetic aperture radar (SAR) system with linear frequency modulated continuous wave (LFMCW) for target detection. A SAR imaging algorithm and a spatial processing procedure are combined to detect drones at unknown positions. The beat signal at the receiver is used to alleviate the high-speed sampling and the high resolution requirements for signals with...
Diastolic time (DT) may reflect the functioning status of cardiac relaxation/diastolic filling. Previous studies shown that beat-to-beat variation in RR interval (i.e., HRV) is preferentially expressed in the variation in DT series, raising up a question that whether DT possesses intrinsic variation, or whether the DT variation is simply a surrogate of HRV without additional information. In this study,...
Ionospheric clutter is the primary factor that affecting High Frequency Surface Wave Radar (HFSWR) detection performance. In order to draw up an adaptive detection strategy suitable in various environment, a novel algorithm is proposed in this paper to recognize ionospheric clutter. The algorithm firstly extracts a series of features, after that, it takes advantage of Genetic Algorithm (GA) to select...
The RD (Range-Doppler) spectrum of signal received from high frequency OTHR (over-the-horizon radar) consists of two Bragg peaks. However, contaminated by ionosphere, both two Bragg peaks will be shifted. A method based on Kullback-Leibler (KL) divergence and centroid, named Mode-Kullback-Leibler-Centroid (MKLC), is proposed to get a better estimate of the center frequency of RD spectrum. In the real...
In this paper, the adaptive robust control (ARC) algorithm is proposed for tracking control of the electric cylinder position. According to the analysis of the working principle of the electric cylinder servo system, the model of the system is established on the modified Lugre friction model, and single observer is designed for calculating friction as well. Then the ARC controller and adaptive law...
In this study, a general U-model based design procedure is expanded to super twisting control of nonlinear polynomial systems, which is named as U-super twisting control in short. A discrete time super twisting reference model is proposed with proper convergence precision and convergence time for nonlinear dynamic plants including non-affine systems. Two bench test examples (non-affine plants which...
An Iteration Strong Tracking Square-root Cubature Kalman Filter (IST-SCKF) is proposed and applied to the autonomous optical navigation system which has the problem of the non-linear for the state equation and the observation equation of the spacecraft cruise phase, and the orbit of the spacecraft was determined real-time. The algorithm introduces the method of iterative updating. In the update phase,...
In this paper, the influences of sandwiched structure trench on the latch-up reliability of the LIGBT with thick SOI substrate are investigated. Based on the influence mechanisms, a novel device structure with trench grounded is proposed, which can enhance the latch-up voltage by 24% with the other performance maintained. Further studies illustrate that the latch-up voltage would decrease dramatically...
The issue of remaining useful life (RUL) prediction has already become a quite interesting topic in industrial product. The data driven RUL prediction has been applied to the current research by taking advantage of a long-short term memory (LSTM)-recurrent neural network (RNN) approach. This means that even in a specified long-short term memory bound and limited available data sets, the RUL predictions...
Vision-based traffic light detection has been widely studied over the past decade. However, it is still a challenging task to build a real-time and robust classifier-based detector without a high dependency on prior knowledge. In this paper, we have a deep look at the design of features and detection mechanism in the domain of traffic light detection; propose a multi-scale and multi-phase detector...
The current attempt is to propose a theoretical Model for Cognitive Skills (CS) formulation based on semantic analysis of comprehensive psychological and neuroscience literature studies. Secondly, the semantical investigation able us to proposed statistical estimation and mathematical formulation of the relationship among CS and Human Factors (HF). As to detect the level of CS during critical tasks,...
In this paper, exponential stability of switched positive linear systems (SPLSs) composed of all unstable modes is first investigated. Through minimum dwell time and fast average dwell time (ADT) approach, sufficient conditions of exponential stability of SPLSs without stable subsystems are derived. The main idea is to utilize the decrement of energy functions caused by switching to compensate the...
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