The thesis have introduced the operating principle of frequency control, analyzed mechanical character, under and above basic frequency proportion of constant voltage-frequency control character, adapted vector control method to frequency control system design, the simulation model of the motor is given,...

The stability of the output of power generation systems plays an important role in the production efficiency of the power grid. As the research on control method progresses, new theory appeared, and the output control has greatly improved. Boiler steam temperature control process related to how much...

For the problem of aircraft attitude estimation system, Unscented Kalman Filter (UKF) algorithm is easy to be disturbed. Therefore, an improved adaptive UKF algorithm which can overcome disturbance well by introducing adaptive factors to adjust the state gain matrix is proposed in this paper. The simulation...

Mine hoist disc braking system, by dynamically adjusting the overflow pressure of the electro-hydraulic proportion relief valve, could control the oil pressure of the disc brake to achieve the safety brake of mine hoist equipment. According to the working features of mine hoist brake system, the author...

Aiming at the problem of voltage reduction and voltage distortion due to the extensive use of inductive loads, and some shortcomings of existing reactive power compensation devices, a new AC-AC chopper based var compensator is proposed. The basic principles, compensation characteristics and topology...

This article discusses the security assessment methodology of mobile internet. Above all, the impact of risk environment on network security is analyzed. In accordance with the actual situation of mobile internet, each risk factor is identified and measured by 3 dimensional indexes including its probability,...

Sunlight is one of useful energy harvesting sources that can be found everywhere. In spite of this ubiquitous availability, sunlight intensity is dynamically changing. Thus Maximum Power Point Tracking (MPPT) circuits are needed to harvest the maximum available energy from the solar cell, regardless...

In this paper, an improved single-phase H bridge rectifier controller with high power factor, and low DC ripple is presented. After introduction the working principle and electrical circuit topology of single-phase rectifier with the H bridge, the design method of its essential parts of controller, phase...

Joint estimation of clock offset and skew is a very important research for time synchronization. In this paper, we develop a set of energy-efficient clock synchronization algorithms of Wireless Senor Networks(WSNs) based on Pairwise Broadcast Synchronization Protocol(PBS). We formulate the clock offset...

Improvement of power factor can reduce resistive power losses, increase the bus voltage and in many cases improve motor performance in an industrial enterprise power network. The regulating elements implemented in the network include transformer tap changers, generators regulators, static shunt capacitors....

To improve the overhead transmission line online monitoring device power utilization rate, the online monitoring device is not always collecting data, according to the different operational characteristics of the device units, proposed a comprehensive efficient energy-saving control scheme. Scheme given...

PLC in twentieth Century 60 and along with the development of microelectronics and computer technology, PLC technology has been continuously developing. PLC technical indicators continue to improve, function continuously improved, has been widely used in industrial control system to realize the automation...

Electronic textbook(E-textbook) resources include reading resources in the field of digital reading, and learning resources in the field of digital learning. The emergence of cloud service efficiently supports the construction of the e-textbook resource management. Cloud service is a suitable architecture...

Because of modern air combat is fierce, the air combat situation vary from minute to minute, air combat opportunity transient, and the biggest threat to air combat comes from the tail, so the air combat both are considering how to directly attack the rear target missile, OTSL(over the shoulder launch)...

This paper simulates the assembly and processing of automotive body based on eM-Plant platform, considering the characteristics of the layout of integrated automobile processing station and the machining time arrangement of workers. It analyzes the bottleneck problem of the producing process and finds...

Order-picking is a common operation in AS/RS (Automatic Storage and Retrieval System), and it is an effective method to optimize the order-picking for improving the efficiency of the automated warehouse. In this paper, we use a hybrid particle swarm optimization (Hybrid PSO) algorithm to optimize the...

Image matching is a key technology to be solved in the fields of digital image processing and computer vision.Matching based on feature points is most widely used now.How to locate the right feature points is a vital issue.Only accurate feature points can lead right matching results. The corner is one...

As rapid development of economy and IT in China, logistics facing new environment, railway container freight station is bound to the large-scale, centralized, large-scale, modern direction. However, development of container transport is restricted due to excessive freight station, limited investment...

In order to improve the level of safety management and decision-making of Controlled Flight Into Terrain (CFIT), a CFIT risk assessment model based on an adaptive genetic algorithm and wavelet neural network technology is propose. In the model, wavelet neural network can dynamically adjust the parameters...

This article proposes a new method for prediction of public transit passenger volume based on phase space reconstruction and support vector machine (SVM); applies mutual information method in calculating the optimal time delay of time series of public transit passenger volume; applies Cao’s method in...

In this paper, we designed an internship evaluation system by ASP.NET technology, conducted a detailed analysis and design of the proposed development system function, the establishment of ER model diagram, database structure, analysis of the B / S three-tier architecture model framework to build a model...

The article introduces the total design and implementation of teaching management system based on JSP technology. The system took Brower/server as web access model, Tomcat as Web server and SQL Server 2000 as data access software. The web function implement of system was developed by using the technique...

With the development trend and rapid increase of the power grid capacity, short-circuit current level is increasing rapidly. How to make sure the steady and reliable operation of the power system is a big challenge. So it is of great importance to limit the short-circuit current effectively. A new kind...

In order to solve the problems of the veracity of the topical web crawler which can not get the information interrelated with the given topical. A design framework and algorithm of the ontology-based adaptive topical crawling is brought forwards. We use the ontology technology to reduce the topical web...

In this paper, we consider the Archimedean properties of t-norms. We summarize some Archimedean properties and characterize some new Archimedean properties of triangular norms on [0,1].

In this paper, we consider the definitions of the BCK and BCI Algebra. We put out four examples in order to prove that any one of the four conditions in the definition of BCK algebra cannot be proofed by other three conditions. Next we simplify the definitions of the BCK and BCI Algebra by giving new...

According to the present situation, this paper have developed a mechanical characteristics on-line monitoring system of vacuum circuit breakers with TMS320F2812 chip from TI Company as the central processing unit. It can work on-line for a long time and can communicate with upper computer by RS-485 which...

This paper chooses rice container transportation as the case, studies on the relationship between container packing and container shipping, analyse the main operation players, such as packaging provider, cargo owners, port & shipping company, to find its impact on container supply chain’s KPI, identify...

The meaning of software support and its all actions are expounded in this paper. And software support is classified to three classes. The model of software support is built. The Software Supportability and its affected factors are discussed. The software support problem and its solution methods of command...

Based on the reusable components, this article developed a remote maintenance system software. Essence of the process is a reusable component extraction process and development. Under the guidance of the field of engineering analysis in the field of remote systems, identify reusable components, and achieve...

PLC is a kind of special order to the industrial control microcomputer system.In order to adapt to the requirement of sequence control,Out the microcomputer some Numbers of PLC function, and strengthen the function of logic control,Is a kind of between relay control and computer control automatic control...

To predict the production scheduling performance in a shop floor, an intelligent method based on a modified league championship algorithm is proposed. The method overcomes the problems like premature, being stuck to local minima, etc. A new match schedule is introduced to enhance the competition capability...

With the rapid development of mobile communication technology, mobile electronic- commerce as a new type of electronic-commerce is attracting widespread attention and use because of his advantages, such as simple, usable, fast, convenient and suitable cost. but how to ensure fast and convenient transactions,...

In order to help network managers better grasp the situation of network security, and timely respond to major network security incidents, as well as reduce the loss of network attacks bring to the target network, network security situation analysis system has been studied and the overall design is proposed,...

According to the problem that the single phase grounding fault location is difficult to detect, a novel method of identifying fault line for single phase grounding fault is presented, based on the detailed analysis of the transient zero sequence network’s fault characteristics in the small current neutral...

In this paper, a patch-based super-resolution (SR) method is proposed to hallucinate facial images. Two steps are involved in this method. In the first step, semi-kernel partial least squares (semi-KPLS) algorithm is used to generate a nonlinear correlative space. In the second step, we use collaborative...

An adaptive single-block hash function was designed and realized for short message in this paper to effectively solve the drawbacks of MD5 or SHA, such as the padding redundancy and fixed message digest. It took 128, 256 or 512 bits as input, and 128, 160, 192, 224 or 256 bits as output. Its characteristic...

As information technology philosophy of life is gradually recognized, smart home system as a new consumer demand will have broad market space. Based on the ZigBee wireless communication technology and embedded systems, a wireless smart home control system is build. In this paper, the inside networking...

With the maturing of big data, big collaboration, large platform technology, the library' pattern becomes one of the hot issue in the library domain experts. This article reviews the main idea about the future library at home and abroad. Then, based on the trends of big data, big collaboration, large...

Some problems are existed in confirming the weighted value in the software quality model, for example, the method is relatively rough and how the abnormal value is rejected while judging the weighted value. Aiming at these problems, it is pointed out that the scientific hierarchy structure of quality...

With the development of economy, the level of science and technology has improved greatly. People’s demand of the Internet information is increasing in their daily work and life, so people’s demand of the Internet technology is even higher. The current mobile Internet technology is developing, as a result...

Based on ASP.Net technology and SQL Server 2000 database ,Press release management system development of three layer architecture. The paper introduces the ASP.Net technology characteristic, The realization process of system architecture design, function module design and system are introduced in detail....

In order to implement the optimal utilization of energy and stable running of system in the stand-alone PV generation system of microgrid,the control mode of DC-DC converter has to switch frequently between MPPT control and constant voltage control.And the two modes have its own control strategy and...

As the core components of high-speed machining center, Electric spindle realizes “zero transmission machine”, the main content of this paper is the response and stability analysis ofcritical speed, unbalance of spindle unit, and the transient excitation system in a variety of response and thetorsional...

The paper presents the design and implementation of Online-test System Based on J2EE, the application of B/S and C/S model to a combination of design, and divides the system based on module. Then the paper provides the design of data program, followed by a discussion of the ap-proach of automatically...

Li-air battery is considered as a promising alternative in the future to replace the current battery technologies. It can eliminate the common range anxiety in electric vehicles for its compelling high energy density. However the extremely low power density becomes its deadly drawback which makes it...

It is well-known that writing an error-free floating-point program is very difficult. Thus, detecting unacceptable errors of a floating-point program is important. In this paper, we develop a system named SpaceAED. The main function of this system is to automatically detect unacceptable errors of a floating-point...

In this paper, a missile test simulation and training system based on CPLD is designed to implement the test and other training mission of a missile. The implement project is given; the hardware structure and software of the system are introduced. The research of this system has greatly developed the...

The current mine personal positioning is not precise. An improved RSSI is present in this paper to improve the precise of mine personal positioning. The personal positioning system will be completed with trilateral localization algorithm and differential correction algorithm finally.

In order to complete a realistic strong body crushing process and has some high ground real-time, simulation methods was proposed to simulate impact on the destruction of the object-based process. Firstly, the physical properties of different materials of glass, concrete and marble, through continuous...

This paper introduced a kind of digital signal processor (DSP) control system of several ( 2) dc motors, and described the development of dc motor control interface using C# language based on Visual Studio 2010 (VS2010) software platform. The mechanism of serial communication as well as its control on...

We Propose PSO-BP network traffic prediction algorithm which based on BP neural network and improved by the particle swarm optimization. Use PSO algorithm to optimize the initial weight and threshold values of BP network, and use history to train BP neural network and realize the simulation by MATLAB....

With the development of mobile payment is more and more widely applied, as mobile payment technology mainstream NFC technology, has gradually been concerned because of its advantages compared with Bluetooth and infrared payment technology, is widely used in the field of mobile payment. This paper mainly...

The decision of the inflection point is the key to ensure automatic section cutting precision using a boom-type road header. In this paper, cutting precision model was set up for the first time to trapezoidal section and a method determining inflection point is given. Considered the cutting head’ projection...

Compared with single robot system, multi-robot system has many outstanding advantages, such as parallelism, redundancy and spatial distribution characteristics. And at present, multi-robots system is already successfully applied in aerospace, automotive assembly welding, disaster relief and other fields....

The paper proposed a model of automatic test paper generation system since the traditional test was time-consuming, labor-intensive and unstable. Based on the demand of the automatic test paper generation system the model explored the setting of the initial value information of the ant colony optimization...

Many programming languages provides non-local exit. In C language, it is implemented by setjump and longjump functions in its standard library. In Java, a try-catch-finally statement is equipped as non-local exit with control capturing. The try-catch-finally mechanism can be categorized into two parts:...

Driving status recognition, driving route tracking and traffic flow detection application, and so on, are strict with the smartphone orientation. In order to achieve a good performance, we should learn its orientation in advance. In this paper, we propose a new approach to estimate the smartphone orientation...

Plenoptic camera provides us with the capability of refocusing photograph and extending the depth of field(DOF) after exposure. But when we render image patch by patch, the output image is rendered with visible artifacts because of mismatch of the adjacent patch boundaries. The paper introduce a novel...

In this paper, the maintenance training characteristics and rules of a certain type of missile equipment is researched, and a framework for integrated maintenance training system for enhancing maintenance training effectiveness is constructed. The system can be equipped for teaching, information querying,...

This paper proposes a new one-stop blind source separation analysis method by combining wavelet transform, FastICA and self-organization mapping network. Firstly, we suppress the Gauss noises by using wavelet transform. Secondly, we separate the mixed signals utilizing FastICA to get the independent...

Moodle is open source software and it can build course management and teaching platform for teachers. This paper, according to the latest network teaching theory and teaching practice, discusses the development and implementation of teaching system based on Moodle platform. Based on combination with...

In the power information collection networking, the design of the routing protocol has a great impact on network performance. This paper proposes increase routing redundancy tree in the basis of low-power lossy network RPL routing protocols, and study the multicast trickle algorithm and complete the...

Because the number of electric industry end-users is tremendous and spot environment is complex, traditional meter reading pattern can’t satisfy. In this paper, multicast routing algorithm based on IPv6 wireless communication module and RPL routing protocol is proposed. It is used to construct network...

This paper introduced a design of infrared remote and self-balancing car.STM32 is master control chip on this system. Infrared remote control devices serve as the control devices. Firstly, the MPU6050 sensor acquire data of the car’s attitude. Then, using Kalman filter algorithm and Data fusion technology...

The suspended particulate matters are one source of the main pollutants in poultry housing and corral. There are also lots of serious pathogens in the air as suspended particles. It is harmful to the health of animals and workers when the density of suspended particulate matter is high. It is significant...

Commercial thermal infrared imager with large volume and high cost usually captured the infrared thermal image with automatic gain in order to enhance contrast of the image. The infrared thermal image captured with automatic gain could not represent the original image information corresponding to the...

A parking management system based on embedded system and GSM network for stereo garage is proposed to solve the current parking problems in the cities. This system, using an ARM processor, advanced RFID and GSM communication technology, achieves effective automation management of the stereo garage. Moreover,...

The development of Computational Fluid Dynamics (CFD) technology make people found the good point of compromise on the conflict of experiment and analysis,and air-lift artificial upwelling for deep ocean water efficiency is simulated with a simplified CFD model of two-phase flow in an upward pipe. The...

For image segmentation and recognition problems of moving target in the image, a humanoid intelligently cognitive method has been discovered. The thesis adopts an improved three-step search algorithm to improve the search speed of gray projection algorithm, through improved HSI difference model, adaptive...

This paper introduces the definition of maximum entropy,the principle of one-dimensional and 2-D maximum entropy. This paper solves the image segmentation problem by using the maximum entropy algorithm.The image gray value is divided into two regions of the background and the object.The key problem associated...

Analyzed the relationship between cloud computing and the internet of things,Cloud computing has unique advantages, so it becomes the main supporting technologies of large-scale, cross regional development,and study on network framework based on cloud computing, and proposed the key technology to realize...

A time domain (TD) hybrid solution based on uniform theory of diffraction-physical optics (UTD-PO) is presented to analyze the multiple diffraction under nonline-of-sight (NLOS) environment where an obstacle causes shadowing of the transmitter from the receiver in wireless sensor networks (WSNs). The...

with the high speed EMU project of technology import in our country, and the vigorous development of the urban rail transit construction, puts forward higher requirements for the reliability of the vehicle. Urgent need in order to realize the normal operation of the train in the rolling stock fast real-time...

The role of technology is becoming increasingly apparent during the development of education. Development of education has experienced many processes in the history of human social development, which affect the development of information technology to education has brought the most obvious. Further analysis,...

To solve the problem of energy waste caused by fixed luminance of common lamps, a new fluorescent lamp system is designed which is based on STC SCM. In this system, Light gathering is used to collect and analyzes the light luminance outside by STC; the circuit composed by the PWM is controlled the fluorescent...

With the rapid development of Chinese economic, the effect of supervision and inspection of fire has become more and more important. According with the workflow and requirements of supervision and inspection, this system is from the actual needs of firefighting work, operated easily and is suitable for...

This paper proposes a novel approach but efficient algorithm for the edge details and regional characteristics preserving halftoning. While the gray image turns to halftone image using proposed algorithm, binary watermark is embedded in the edge position. In order to enhance the ability to resist cropping...

The termination problem of a class of simple while program: While (constraints) do {updates} end is proven to be decidable by computing periodic orbit of nonlinear updating function over the reals. The termination problem of such a program with open constraint domain which have periodic orbit on the...

Aiming at virtual machine load balance evaluation, this paper proposes an evaluation algorithm based on quadratic equilibrium entropy. Firstly, we propose the computational methods for linear equilibrium and quadratic equilibrium entropy. Secondly, we analyze the physical meanings of linear equilibrium...

As the consumption of the true radio set is high and the communication interference grade is undistinguishable, a set of communication jamming simulation training system was developed in this paper. A broad-band communication module is used in this training system, and through the frequency domain equivalent...

We presents a new method for color printers. Our algorithm applies to both a color printer model and a model for the human visual system (HVS). The method strives to minimize the perceived error between the continuous original image and the halftone image. The color printer models can account for a variety...

This paper enables robust foreground segmentation by sorting target proposals over a assumption space to achieve consistent target candidates and binary segmentation of a video sequence. This is followed by sorting the target candidates over a specific hypothesis space to yield consistent and dense object...

The push-pull power boost and full-bridge inverter levels change in the control circuit, the first-stage booster circuit using SG3525 chip push-pull control, closed loop feedback; inverter part EG8010 complete SPWM modulation driver chip IR2110 be full-bridge inverter; after level output is sampled using...

The lightning produces a powerful lightning current, and it caused the electromagnetic fields, the optical radiation, the shock wave and the thunder and so on physical effects. Electromagnetic fields generated by lightning are divided into horizontal electric field and vertical electric field. The accurate...

Lightning, not only on the ground of buildings and electronic equipments but also for the aerospace, defense and military fields, equipment, facilities, has a great threat. In view of this situation, the deduced lightning electromagnetic field calculated expressions at any point in space is of great...

In this paper, we investigate the problem of reliability of RPL (IPv6 Routing Protocol for Low power and Lossy Networks) when applied to route traffic in Wireless Sensor Networks (WSNs). RPL is a routing protocol adapted for information routing with low power, low storage and processing sensor devices....

Beidou satellite navigation system is used as the primary means of fire brigade vehicle management technology, which receives incoming data, coordinate conversion, map matching, display the appropriate vehicle location, speed and direction of travel of the vehicle and other information on the monitor,...

The accuracy of economic evaluation on equipment demonstration projects directly affects the selection of development schemes and the amount of the investment.By analyzing the influencing factors of equipment economy,this paper established the evaluation index system and comprehensive evaluation model...

According to the feasibility and necessity of our military equipment procurement bidding,and also the limitation of the traditional equipment procurement bidding method,this paper describes in detail the basic principle and the main steps in the bidding by using fuzzy comprehensive evaluation method.And...

On account to the restriction of basic ant colony algorithm when the working platform is smaller and the block is approximately the same size as the target, the improved ant colony algorithm is put forward to the path planning of servo mechanical arm. In this paper, the effect of the compartmentalize...

The system uses STC12C5A60S2 microcontroller as control core of the system, the use of special ADE7763 energy metering IC to collect data to construct a developed a high precision, small water treatment equipment data acquisition.Collect real-time data storage and transmission timing via GSM network...

Articles on energy metering performed via remote communications platform to explore new technologies and designed measurement system software, hardware and implementation methods.Energy metering system design includes selection of components, hardware design and software programming and debugging.This...

During the design of harvesting machinery chassis, a lot of factors should be considered, such as the standard data, expert experience, design formulas and the components’ 3D models. It is very difficult to use and manage so many kinds of design data reasonably. Accordingly, the knowledge base system...

The main function of corn harvester frame is to bear loads from working parts, such as engine, cab, transmission, chopped header, husking machine. In this paper, three kinds of typical working conditions of corn harvester, namely, driving on uneven road at relatively high speed, braking and unloading,...

To predict the safety situation of air traffic control, it is inadequate to only use some quantitative prediction method, which can not take into account the knowledge and experience of the experts. We should also pay attention to the important role of some qualitative prediction method. Delphi analysis...

This paper aims to numerically investigate the overall cooling efficiency of a closed-loop steam cooling scheme with 3 separated cooling circuits designed for an inlet guide vane. Conjugate heat transfer simulation is carried out with the Shear Stress Transport (SST) turbulence model. The result indicates...

To overcome the disadvantages of the open loop seawater source heat pump (SWHP), a closed loop SWHP system with casted heat exchangers (CHEs) is presented in this paper. Consisting of closed-loop of pipes immersed in seawater, CHEs are devised for extraction or injection of thermal energy from/into the...

To solve the expression difficulties of the basic principle of asynchronous motor, and the faults to understand the relevant knowledge not fully, the asynchronous motor intuitive to express the basic principle of the experiment device was designed by analyzing the existing mechanical structures of asynchronous...

The driving date of hybrid bus which can be represent the city driving cycle is fully collected, the original data is divided into several kinematic sequences according to the velocity information, and the city hybrid bus driving cycle is built by using principal component analysis and cluster analysis....