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The energy density of the inductive energy storage systems is one order of magnitude higher than that of the capacitive ones. The STRETCH meat grinder with ICCOS put forward by Tsinghua University is a typical inductive pulsed power supply for electromagnetic launch system, which has remarkable current amplification ability as a single module. But one module can not provide enough amplitude and width...
This paper illustrates theoretical analysis and simulative verification on the performance of the llnear-varlatlonalinequality based primal-dual neural network (LVI-PDNN), which was designed originally for static quadratic programming (QP) problem solving but Is now applied to time-varying QP problem solving. It Is theoretically proved that the LVI-PDNN for solving the time-varying QP problem subject...
In this brief, exponential synchronization problem is investigated for an array of delayed coupled complex networks under impulsive control. In previous literature, it is well known that impulsive control has been proved to be simple and effective for synchronization control of continuous-time complex networks. We will show that impulsive control is also simple and effective for synchronization control...
Pattern recognition system is frequently applied in many security applications, for example, intrusion detection, face recognition, spam mail filtering, etc. These applications may potentially face different kinds of attacks from an adversary. Some studies showed Multiple Classifier Systems (MCSs) is more robust than single classifiers under an adversarial attack. This paper investigates the robustness...
In the modern wind power generation system, because of the large number of the high frequency power electronic devices, it brings the bearing current problems to the entire system, affecting the safe operation of the system and the life of generator bearing and other mechanical parts seriously. Precise analysis of distributed capacitance parameter is very important to predict shaft voltage and bearing...
Recurrent neural network language models have solved the problems of data sparseness and dimensionality disaster which exist in traditional N-gram models. RNNLMs have recently demonstrated state-of-the-art performance in speech recognition, machine translation and other tasks. In this paper, we improve the model performance by providing contextual word vectors in association with RNNLMs. This method...
DFIG wind turbine systems are attractive renewable resources in distributed generation units and micro-grids. Due to the direct-connection of its stator windings to the single point of common coupling, DFIG is vulnerable to the unequally-distributed loads at low voltage and arises various hazardous complex dynamic behavior in reliability and harmonics. This paper studies the dynamic behavior of this...
To improve the jumping performance and reduce the modeling complexity, a pneumatic wheeled typed jumping robot is designed, the takeoff angle of which can be adjusted while it starts jumping. The double-acting cylinder with the power source of liquid carbon dioxide is used as jumping mechanism. The changes of the precise equations of the internal pressure in the cylinders are established and a cylinder...
Fruit information perception and nondestructive picking method are the key technologies for harvesting robot. In this paper, the kiwifruit automatic identification method and nondestructive picking end-effector were studied. Firstly, a method of obtaining image from the bottom of fruit was proposed based on the clustering characteristics of fruit and the method of elliptic Hough transform was used...
The 802.11ac WLAN standard can provide wireless throughput up to several Gbps by employing wide signal bandwidth, high-order modulation, and multi-user MIMO. However, these new physical layer characteristics bring significant challenges in RF transceiver design. In this paper, system-level simulation platform based on 802.11ac standard is constructed, and error vector magnitude (EVM) degradation due...
Carbon nanotube field-effect transistor (CNTFET) is envisioned as a promising device to overcome the limitations of traditional CMOS based MOSFETs due to its favourable physical properties. This paper presents a novel six-transistor (6T) static random access memory (SRAM) bitcell design using CNTFETs. Extensive validations and comparative analyses are carried out with the proposed SRAM design using...
We investigate an automatic method for classifying which regions of sequential programs could be parallelized, using dynamic features of the code collected at runtime. We train a supervised learning algorithm on versions of the NAS Parallel Benchmark (NPB) code hand-annotated with OpenMP parallelization directives in order to approximate the parallelization that might be produced by a human expert...
This paper proposed a novel dual-threshold computation method of Canny edge detector based on gradient magnitude histogram (GMH), targeting with the adaptive acquisition of low-/high-threshold for unimodal hysteresis thresholding. With the introduction of the bowstring concept, which accurately measures the tendency of the GMH on the whole, the dual-threshold computation is implemented by adaptive-searching...
FPGA performance is limited by transistor switching time and power dissipation defined by the CMOS technology. Similarly to the case of interconnects, silicon photonics can also be leveraged to replace traditional, slow and power consuming, electrical computing circuits. In this paper we propose an all Optical LUT, an optical core implementation of LUT, which has the potential for low latency and...
Although multicore CPUs are dominating the market of desktops and servers, writing programs that utilize the available hardware parallelism on these architectures still remains a challenge. In this paper, we present a dynamic approach for automatically identifying potential parallelism in sequential programs. Our method is based on the notion of computational units, which are small sections of code...
LEACH is a hierarchical routing protocol special for WSN. Many researchers have proposed many improved algorithms based on LEACH, such as LEACH-C, LEACH-M and so on, and these algorithms have much improvements on efficiency of energy in certain extent. Within the lifetime of networks, based on the shortcomings of LEACH that each node is frequently repeated several times elected cluster-head and consumed...
BACR is a new hierarchical routing protocol based on LEACH designed for WSN. It introduced energy-involved voting and back-off announcement to control the number of cluster-heads to vary within a small range and evenly locate the cluster-heads thus to prolong the network lifetime. This work also employed the technology of cluster reappointment to minimize the energy consumed in cluster set-up phase...
The biggest challenge faced by the distributed classification in wireless sensor networks (WSNs) is how to reduce the energy consumption in sensors for improving their service capacities. In this paper, an incremental Support Vector Machine (SVM) training method based on redundant data removing is proposed. Applying this method, distributed clustering is firstly performed on the data of sensors. Then...
ZY-3 (Ziyuan 3—Resouces 3) is the first three-array high resolution mapping satellite in China and was launched in 2012 spring, providing 2.1 meter resolution panchromatic image product and 5.8 meter multispectral image product for implementing topographical mapping and observation on land resource. A number of evaluations have been taken in the aspects of its imagery method, geometric quality and...
Maintenance tools present a difficult problem in the complex support system, for the considerable varieties to be integrated and optimized. In this paper, a maintenance tools category integration method was developed, which minimizes the support burden and costs. In order to obtain the solution, a maintenance tools category integration analysis method and an integrated decision-making method were...
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