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Aiming at the solar photovoltaic characteristics and the lower transformation efficiency problem in grid-connected photovoltaic power generation, a maximum power point tracking (MPPT) algorithm is put forward. According to the changes of amplitude and frequency of power-grid voltage, the proposed algorithm...

Because of the effects of the wind-noise, sound-noise, strong electromagnetic interfere, sensor itself, and the magnified circuit etc. at the survey spot, the received transducer signals often include noise signals of multi-frequency disturbance. Under serious circumstances, such noise signals would...

Blind channel estimation for MIMO-OFDM systems was discussed, and a subspace based blind channel estimation algorithm by re-constructing the received signal and its simplified one were proposed. The algorithm changed the channel matrix of the transfer function into a block Toeplitz high matrix exploiting...

Through the analysis of the surface of the gear machining program, describes the characteristics and applications of various processing methods, the view of the article describes have a guiding role in the design and processing gears.

Online learning is a learning way to use online education platform for learners. It could let the learners start learning at anytime from anywhere by removing the traditional education's time and space limit. As the online learning style becomes more and more popular, its main base environment has gradually...

Study of motion control of underwater vehicle is deeply undertaken here. S-plane control is verified to be effective and validity in the control of UVs, but there are still problems in steady precision and parameter adjustments. To obtain higher steady precision, intelligent integral method is brought...

Using WDM technology to solve the problem of the reuse addressing the fiber grating sensing network, the system USES a reference grating for temperature compensation, the reference grating was put in the same temperature field as the measuring grating array, but does not suffer the effect of strain,...

Reflective spectrum of sampled grating was analyzed using transfer matrix method. Dispersion compensator was designed by selecting the length of sampled grating, sampled period, sampled rate, chirp coefficient and some kind of appropriate parameters. In multi-channel dispersion compensation simulation...

This paper changed temperature conditions to simulate by finite element software. We can observe the simulation results of the BLDC (brushless director current motor) stator resistance. Then we applied formula to calculate the BLDC stator resistance. At last, measuring the stator resistance of different...

The transmission of real-time video need a stable link and is also very sensitive to delay and packet loss, this is a huge challenge to wireless ad hoc network[1,2,3] which has dynamic network topology and limited bandwidth. In this paper, a method to transmit video streams in multi-hop network is proposed...

The paper proposed a new model by applying bio-inspired theory into intrusion detection system in cloud computing. Dendritic Cell algorithm (DCA) based on Danger Theory get involved in the model designation in allusion to the existing problem, high false negative rate, low detection efficiency, low real-time...

Transformer winding deformation is common in transformer faults. Offline monitoring is mostly used in diagnosis of winding deformation, which has some limitations. So an online detecting method based on extraction of current is proposed. The method increases the higher harmonic of the current that flows...

In order to solve the contradiction between real-time and accuracy of collision detection in virtual battlefield, we divided the terrain into three types according to its average curvatureand different matching algorithms were used in different types of terrain. In virtual battlefield, collision detection...

According to the characteristics of military supply chain, we design the indicator of performance evaluation based on the key factors of supply chain strategy in this paper. When talking about estimating performance evaluation, in order to materialize the punitive or stimulant request that decision-maker...

With the rise of the Internet Web 2.0, the paper studies a use of B-tree index technology supported by Oracle 11gin mass data retrieval. B-tree index scanning mode use the index selectivity, histogram etc to select the best execution path to improve query performance. Put forward the solutions to avoid...

the development of electric power and communication technology promotes the apply of cable widely, the trouble of cable become more and more. establish the measure cable breakpoint location range system to locate the breakpoint rapidly, the location of cable breakpoint can be calculated by the interval...

In cognitive radio system, secondary user’s self-sensing properties to the spectrum occupy is the start and basis of the whole cognitive process. The classical analysis of self-sensing properties has the hypothesis that the Primary user signal occupies the whole sensing slot. However, in the actual,...

The wind tunnel test control is the key to the wind tunnel tests. This article Studied 0.75m × 0.75m With backflow wind tunnel measurement and control technology, through the transformation of the wind tunnel motor to improve the stability and uniformity of the airflow and reduce turbulence degree; through...

Rarefied gas effects have to be considered when doing the research and design of hypersonic flight vehicle in near space, in which accurate prediction of flow field and surface properties such as pressure, shear stress and heat flux are needed. Research on the mechanism of hypersonic slip flow must consist...

Virtual laboratory is a practical teaching assisted instruction with high efficiency. This paper analyzes the characteristics, classification of virtual laboratory and the design of virtual instrument. It discusses the construction and system structure of network-based virtual laboratory. This paper...

A nonlinear dynamic model of a spur gear transmission system is developed with consideration of gear mesh stiffness, backlash, internal and external excitation. Lagrange equation is used which is derived for the vibration of the drive system differential equations. Time process diagram, frequency spectrum...

Materials and the related manufacturing industry involve every area of the economy, and the corresponding talent demand ranks in the forefront of all industry professionals. However, the defects of current talent training mode and curriculum system limit the quality of talent training. In this paper,...

In order to solve special shape pipe automatic welding problem,a new decoupling control system has been introduced,which is constructed on PID and RBF neural network.Input data is from non-contact displacement sensor and angle sensor,and output data has been used to control servo motor which always used...

Evaluation of equipment `support distribution `plan in wartime scientifically and accurately is crucial to improve the efficiency of distribution and meet the demand of war timely. In this paper Topsis is adopted to conduct comprehensive evaluation of the equipment support distribution plan at war time....

As the device in general inspection maintenance, can only carry on the system static parameter measurement, and dynamic performance of the system only can be judged by qualitative observation. In this paper, we adopt modular design scheme and the method based on synchronous sampling and real-time data...

The ground fissure is hidden hazards of ground deformation.Survey work to crackisthe basicofcontrol measures. Geological radar detection as an emerging technology has advantages of rapid, continuity and visibility; according to a practical example of the detection mechanism of landslide cracks, summed...

In this paper we analysis aircraft dynamic characteristic on relaxed static stabillity control from the concept of active control technology point of view, and calculate the dynamic characteristic of longitudinal. Through calculation, further reseaerch on the influencing of relaxed static stability on...

Based on the analysis of problems encountered by PulsON@ 410 RCM modules when used in substation accurate locating, such as automatic discovery of beacons, a self-organizing protocol is put forward to support the creation, maintenance of beacons network. Also solutions from different aspects are presented...

This paper illustrates the main features and structure of the armored vehicle engineering simulator (AVES). Considering high cost and long cycle development problem of the traditional armored vehicle design, the AVES has been developed for purposes to test rationality of design, to investigate different...

Key problems in view of the urgent long-endurance uav, the research of the application of bionics to no one wing design. With the wings of a certain unmanned aerial vehicle as the research object, is good at gliding gull for bionic prototype. Design imitation airfoil seagull flat wings and wing tip winglet...

Charging, discharge, maintenance and energy management technology for electric vehicle power battery is relatively backward, An advanced and reasonable method is presented for battery state of charge( SOC ), used simple rough set attribute ,simplified battery charging related parameters, the simplified...

With the development of information technology, textile machinery manufacturing enterprises (TMME) are facing the new situation of “Two Integration”, in order to better responding to market customer demand (CD), the order prediction is becoming more and more important. The background of product model...

Several different Li+-imprinted gels were prepared by different precursors. And the gels were characterized by textual properties and point of zero charges (PZCs). The adsorption of Li+ from their aqueous solutions by the gels was investigated. The surface areas of the gels were found to range from 60...

The placement of the wireless sensor networks in the wild or the unpopulated area makes it difficult for energy supplement, and vulnerable to damage, so it is of great importance to improve the overall network energy efficiency and prolong the maximum life cycle. In consideration of the energy consumption...

Logistic distribution is one the most important parts in logistic industry, its core is to get the shortest transportation route of car. This paper makes mathematical modeling on distribution route of logistic car, constructs target function and constraint condition. It makes analysis on realization...

This paper presents an integrated passive sensor tag for intelligent concrete temperature control. The sensor tag is based on EPC Generation-2 UHF communication protocol and operates in passive node. Except the antenna and matching network, the other blocks including RF/analog frontend, digital baseband,...

QKD (quantum key distribution) is core of quantum communication, it is not only the most extensive range of applications, and can also be served as a basis for other branches. In this paper, the theoretical basis and the basic idea of quantum key distribution has been described. Focus on several quantum...

Today’s Internet remains its original design that dates back more than three decades. In spite of tremendous heterogeneous networks and large scale of mobility devices, it still provides a single, basic, unreliable service offering. While this legacy architecture seemed so hard to support the requirements...

In view of the shortcomings of the test data generation algorithm including particle swarm optimization algorithm and ant colony algorithm, a new algorithm is proposed, which is based on the combination of particle swarm algorithm and parameter adjustment. This algorithm can dynamically adjust its search...

The services carried by the Internet have undergone tremendous change over the past decades, along with the emergence of multimedia services and cloud computing, etc. However, there is little change in the framework of network designed primarily for reliable end-to-end communication, which is not suitable...

Mobility pattern of users is decided by people themselves. However, in the daily life, mobile users often repeat regular routes in certain periods. To effectively mine the mobile rules of users and allocate the resource among mobile telecommunication operators and Internet Service Providers (ISP), grasping...

With the advent of the smart clothing, wireless body area network(WBAN) has became particularly important as the information perception stage of smart clothing. Firstly, we introduced the conception of the smart clothing and the wireless body area network briefly. And then we analyzed many traits about...

In this article, a new method is proposed for the parallel of digital image processing algorithms. The method will transplant parallel the image matching algorithm based on cross correlation to the digital image processing platform.

To transmit data reliably and effectively in deep space network, a protocol called NCSTP was proposed, introducing network coding mechanism into space communication. However, the NCSTP cannot make an effective response to the burst packet loss characteristic in InterPlaNetary (IPN) network. Therefore,...

Aiming at exploration and development capacity, it is usually hard to achieve effective utilization and balance by using just one algorithm, which will influence the solving accuracy and efficiency of the algorithm accordingly. This thesis applies particle swarm optimization (PSO) to discrete multi-objective...

This paper researches the integrated optimization of flexible job shop scheduling problem (FJSP) and equipment maintenance plan. The object of the integrated optimization model is to pursue the minimum of makespan. The paper proposed a two-stage algorithm based on the genetic algorithm to solve the problem....

We investigated the effect of lactoalbumin on the processing properties of vulcanized rubber by adding lactoalbumin protein. We found that G’ and G’’ of vulcanized rubber were increased and tan was decreased by adding lactoalbumin. The addition of lactoalbumin can improve the processing properties of...

Ammonia and HTT were compounded and tested as a novel preservative system for concentrated natural rubber latex (CNRL) to replace traditional preservatives. The preservation effects and the viscosity of prevulcanized CNRL were measured. After preservation treatment, the drying characteristics, the mechanical...

On the basis of cadre management business requirements analysis in colleges and universities, this paper designed and developed one colleges and universities cadres management system with a set of user management, cadres management, cadres ability evaluation and system management based on J2EE platform...

In the process of surface reconstruction, the least squares fitting surface often produces singular matrix and it will cause a failure surface fitting. In this paper, we propose a new surface reconstruction method based on hierarchical surface. We first construct a low-order surface to interpolate data...