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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...
In this paper, considering the traditional reactive power optimization cannot realize the continuous voltage adjustment and voltage stability, a dynamic reactive power optimization strategy is proposed in order to achieve both the minimization of network loss and high voltage stability with wind power. Due to the fact that wind power generation is fluctuant and uncertain, electrical equipments such...
In view of the shortages of Price forecast for power device, a new forecast model GPCR was proposed in this paper. By analyzing the main problems in the current procurement of Power Grid Corp, this paper uses grey relational analysis (GRA) and principal component regression (PCR) to forecast the price of power device. In the experiments, we prove that the proposed method is effective, and show the...
This paper is aimed to study on engine start-stop control strategy in series-parallel hybrid system. Firstly, working principle of hybrid vehicle is introduced, especially on series-parallel hybrid system and engine start-stop technology. Secondly, control algorithm of engine start-stop is developed; we discuss different transition conditions in engine states. The control algorithm is validated on...
Dynamic adaptive streaming over HTTP (DASH) has been a research hotspot, and the current studies focus on the DASH transmission optimization using unicast mode. However, DASH streaming also could be transmitted by multicast mode, which could effectively reduce transmission resource consumption especially when multiple DASH clients request the same video program in parallel. In this paper, we propose...
As low-power electronics and miniaturization conspire to populate the world with emerging devices, one appealing approach is to power these multi-core/many-core-based devices with energy harvested from various environments. Of the most important issues concerning these devices is how to effectively allocate power budget among the cores competing for power, which is formulated as one specific type...
Independent component analysis has become a predominant method for blind source separation problem. And the FastICA algorithm is widely used due to its rapid convergence property. However, the performance of this algorithm is sensitive to its initial values for the input weight of separation matrix. This paper proposes approaches to improve this algorithm from two aspects. First, performance comparison...
Fault detection and location are important steps in the design and production of reversible circuits. However, there is little research work has been done on fault location for reversible circuits. In this paper, two algorithms labeled LRCMD and MSDA are proposed to locate the single missing gate fault into a small module. LRCMD divides the circuit into several large models from the lateral based...
Power consumption of many-core chips increases in such a rapid pace that it will soon exceed the chip's affordable power budget. As a result, design of a many-core chip has to address a significant performance challenge under a tight power budget constraint. This problem becomes more prevalent as more of the frequencies and/or voltages of on-chip resources in a many-core chip can be tuned, where heuristics...
Electric Vehicle (EV) bi-directional charger as an important part of the industrial chain for EV can realize two-way power conversion and interaction between EV power battery and power grid. In this paper, a scientific integrated approach to data management in the process of implementing test system for EV bi-directional charger is presented. Combined with the file system and database technology in...
During the past decade, using genetic algorithm (GA) to design circuit, which called as evolvable hardware (EHW) technology, had attracted many experts' attention. In this paper, EHW based on variant-length cellular automata (CA) to designed combination logic circuit is described. The state of cell in CA is no longer as ‘0’ or ‘1’ but a bits string that indicates an embryonic circuit. The length of...
Based on the work flow of steel rolling process, the water flow chart was built and its valuation index of water-use was confirmed by using the tracking observation principle of the material flow analysis theory combined with medium and small cycle theory of system energy conservation. The water-use status of steel rolling process was analyzed. A case study on a plant, its water-using situation and...
Many scholars have realized the importance of view in traditional Chinese garden design. However, subject to limitations of research methods, the visual structure of traditional garden space has not been fully understood yet. Take the Lingering Garden in Suzhou as a case, this paper attempts to use the newly developed syntactic analysis techniques, to explore the hidden structure of visual perception...
The steady and uniform Alpha discharge phenomenon between all metal slab waveguide were clearly recorded with Nikon camera, the variation of the luminous intensity was firstly analyzed and studied for the Alpha discharge experiment, in which the discharge is taking place between the parallel all metal plate electrodes with the two bright glows, the visible emission intensity is greatest near the parallel...
The exchange of 2502 circuit breaker, 220 kV side, II main transformer, Wuxi JiangXi electric substation(CIRCUIT BREAKER2502), works as an engineering example, through concrete projects and plans for presentation and analysis, demonstrating the construction technology feasibility of implanting chemical anchor bolts into the original foundation. Practical application in engineering and the test results...
Wireless sensor networks (WSNs) is always consist of stationary and mobile sensor nodes, sensor node deployment is one of the key topics addressed in the researches of WSNs, traditional virtual force (VF) algorithm is presented. This paper proposes a method of improved particle swarm optimization to solve the problem. The simulation results show that the improved particle swarm optimization has better...
Construction enterprises win the project by construction project bidding .In present system of biding ,the threshold bidding cost directly impacts on bidding for quotation price of winning the tender, so it is very critical to design reasonable cost threshold in completive-bidding .There are many factors that influence the construction cost, which make construction cost to have the character of the...
Non-premixed combustion flow with C16H29 fuel in gas turbine combustor was simulated by commercial software fluent. Under a design condition, the turbulence was solved by the RNG k - epsiv two-equation model, the physical nozzle was simulated by the discrete phase model (DPM) and discrete random walk (DRW) model, the reaction and NOx exhaust were analyzed by different reaction models as eddy dissipation...
Planar-gate type carbon nanotubes field emission electron sources were fabricated with special electrophoretic method. The simulation and experiment results showed electron emission from the nanotubes could be controlled effectively by the gate voltage. The easy fabrication process and simple structure will lead to the electron sources used in many practical vacuum microelectron devices
Generalized Gaussian distribution is a class of symmetry distribution with the Gaussian and Laplacian distribution as the special cases, with delta distribution and uniformity distribution as limit. It is widely applied a great many fields. In this paper, we first deduce the Generalized Gaussian parameter ratio function, and then present a fast parameter estimation of generalized Gaussian distribution;...
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