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Contactless power transmission system can supply power in non-contact way for many electronic equipments, it has become a hot topic in recent research. Take topological structure of serial-parallel CPT system for example, the optimal values of the compensation capacitors which can solve the poor coupling problem of the separable transformer are determined. A frequency tracking control system based...
In order to reduce the complexity of traditional multithreaded parallel programming, this paper explores a new task-based parallel programming using the Microsoft .NET Task Parallel Library (TPL). Firstly, this paper proposes a custom data partitioning optimization method to achieve an efficient data parallelism, and applies it to the matrix multiplication. The result of the application supports the...
A demonstration is made of the high-speed real-time image processing capabilities of the SCAMP-5 vision chip. The device provides a software-programmable 256×256 pixel-parallel SIMD processor array. In the example application, the IC can determine dimensions and the location of a single object, at a sustained rate of 100,000fps. At 30,000fps, the chip can return the same metrics from 5 objects. This...
This paper has proposed a novel (Integral-Proportional) I-P controller in speed control of a permanent magnet synchronous machine (PMSM) drive system, it removes the side effects such as slow dynamic response of the conventional I-P controller and maintains the advantages in the meantime. Theoretical studies for the conventional P-I, I-P and the proposed controllers in the s-domain and z-domain are...
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 problem of trip planning has received wide concerns in recent years. More and more people require the service of automatically confirming the optimal tour route. When users assign the source and the destination, and the time limit of the tour, how can automatically decide the optimal tour route with the highest sum of the popularity scores of scenic spots. Current methods for trip planning are...
In this paper, a system identification method based on BP-network is proposed to realize the study of dynamic characteristics of high power LED luminaire. LED input-output characteristic relations are obtained according to the lighting system structure, and response curves are received using the method of input isolation. A Back Propagation network model is established to simulate input and output...
This paper proposes an integrated approach to the VNE problem, in which different virtual nodes of a virtual network could be assigned to a physical node as long as this node's available resources can satisfy the total resource requirements of these virtual nodes. We carry out extensive simulations to investigate the benefits of sharing physical nodes. The simulation results demonstrate that (1) Compared...
The article is to demonstrate a way to detect moving objects in dynamic scene. This method integrates the means of background difference and level set. First, we adopt background difference, which is to connect the color of video image and movement mode, and then we can renew the dynamic scene by judging the threshold so that the foreground contour initial model can be obtained. Next, the level set...
Atmospheric-pressure cold plasma jets are very useful tools for the advanced materials processing due to their outstanding features, such as low gas temperature, high concentrations of chemically reactive species, flexible operation procedures, resulting from the vacuum-free configuration of the plasma generation system and the separation of the discharge region and the materials treatment region...
Due to the outstanding features of the radio-frequency atmospheric-pressure glow discharge (RF PAGD) plasma sources produced using a plasma generator with a pair of water-cooled bare-metallic electrode configuration, such as the low capital cost, low and controllable gas temperature, high number densities of chemically reactive species, flexible operation procedure, etc., it would have bright prospects...
A nonlinear-feedforward-feedback controller is designed for an electric clutch actuator, which adopts ball screw as the speed reduction mechanism. Ball screw has high transmission efficiency. However, it does not self-lock. Moreover, the nonlinear friction force, load force, and the nonlinear characteristics of the motor drive circuit increase the difficulty of the position control of the actuator...
The study on artificial intelligence (AI) is highly interdisplinary, which involves increasing number of researchers from different academic fields. In order to provide an overview for the researchers on recent publications in related fields, we conducted a statistic analysis using bibliometric methods. Using the data source from Web of Science (ISI), we have studied the articles published in the...
Evaluation is significant tool for contractor equipment maintenance support construction, and also a primary mean to reflect construction effect objectively and accurately. This paper presents basic theory and methods of System Dynamics at first. Then the elements and structure of contractor equipments maintenance support construction system are analyzed, which is help to describe the control relationship...
In China, wind power industry has undergone great development in the last few years, while several cascading faults happened in 2011, reveal that terminal voltage of wind turbine generator (WTG) should be monitored and controlled. Furthermore WTGs and static var compensators/generators (SVC/SVGs) need to be coordinated to provide voltage service for the whole network. In this paper, a network model...
Objective: This study aims to construct the imaging network teaching system based on picture archiving and communication system (PACS). Material and methods: Taking image storage and communication system from GE medical system as the basic platform, this study attempts to design the teaching service unit in accordance with teaching requirements of the university. In addition, with the basis of multimedia...
The communication between the power supplier and power customers is a key issue in smart grid. Current power systems are based on a solid information and communication infrastructure, while the wireless communication environments of the smart grid face much more new challenges in terms of reliability, efficiency and so on. This paper addresses critical issues on smart grid technologies primarily in...
A secure two-party hamming distance computing protocol is proposed based on the secure two-party matrix product protocol; a secure four-party addition protocol, a secure three-party addition protocol and a secure two-party number protocol are proposed based on the additive homomorphic encryption and secure two-party compare protocol. A secure multi-party closest string protocol is presented based...
The inheritance of family-business directly affects the development of the enterprise. Based on questionnaire of 235 family businesses in Taizhou, the empirical analysis on the impact of the enterprise characteristics on intergenerational inheritance plan was investigated. First, in the enterprise scale, the family business with sales revenue being over 0.1 billion RMB is more prospective on the criterion...
A new modeling method which compounds Multilevel Flow Model (MFM) with Petri-net is put forwards in order to solve the difficulty problem in fault locating for batch process of flow industry. The first step in modeling is to create a Petri-net which also can be used as an information network in MFM. The goal of the Petri-net set up is to describe the system status as being a no fault goal of MFM....
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