Abstract: In this paper, a single-stage rotary inverted pendulum system is set up by using rotary encoder, servo motor and some mechanical structures. Lagrange equation is used to build up the mathematic model of single-stage rotary inverted pendulum. Linear quadratic regulator (LQR) and fuzzy control...

Objective: To study the buffering effect of the green buffering cushion to LCD designed by the finite element analysis technology. Methods: The corrugated cardboard formed by folding was used to design the buffering cushion of the liquid crystal display. The solid model of liquid crystal display and...

Air drag can affect the cruising ability of pure electric vehicles, especially in the case of high-speed driving. In this project, using 3D laser scanner, we can acquire the point cloud data of the Model S vehicle of Tesla, and the STAR-CCM+ software of Siemens is used to analyse the aerodynamic performance[1]...

Fracture mechanics, began in the 1950s, is a new branch of solid mechanics. In this paper, we first talk about the history of fracture mechanics at home and abroad. Then the basic theory of fracture mechanics is briefly described in the second part, in which the basic theory and fracture criteria of...

Based on the actual engineering requirements, this paper puts forward a robot weld position tracking based on laser sensor ranging technology, and the laser sensor is installed at the end of the robot welding gun. DTPS off-line programming software pre-programmed path, robot welding gun drives sensor...

The CAN bus module used in passenger cars has the potential problems of short service life, maloperation and control inaccuracy, etc. In order to improve the reliability and operational stability of the module, the following issues are investigated: (1) Using PWM output to improve the service life of...

Sensors are widely used in all aspects of our daily life including factories, hospitals and even our homes. Discovering time series association rules from sensor data can reveal the potential relationship between different sensors which can be used in many applications. However, the time series association...

Control of chaos in a dual-ring erbium-doped fiber laser is studied by modulating the laser pump and its physical model is presented to induce the dual-ring erbium-doped fiber laser to a cyclic state and other dynamics states via adding a periodic signal to the pump. When one pump is modulated by a periodic...

The power electronics control system can be designed in the discrete domain or continuous domain. In consideration of the digitally control and delay of actual system, it is more accurate to design the system control parameters in discrete domain. This paper firstly establishes the discrete domain model...

Current Statistical (CS) model is a good adaptive filtering model for maneuvering target tracking. While, the performance of CS model depends on the maneuvering frequency, and becomes poor when tracking weak maneuvering targets. Firstly, the innovation of the filtering is used to reduce the dependence...

In this paper, a high precision lighting control system based on TPS92640 is proposed, which meet the requirements of image acquisition in light source. The whole system adopts modular design, including STM32 master module, human-computer interaction interface, light-driven module based on TPS92640,...

With the development of society, all the industrial fields are now dependent on electric energy. An energy electric meter is a special instrument for measuring electric energy, its accuracy and reliability have a huge impact on people's lives. To ensure the reliability and accuracy of electric energy...

To improve performance for integrated exploration algorithms of multi-robot systems, a two-stage coordinated strategy is proposed in this paper. In the first stage, all robots explore unknown environments by a kind of forth and back trajectories which are shaped by social entropy and a voting mechanism....

In this paper, we investigate the scalability of OpenFOAM for the viscoelastic solver which is implemented in our previous study on HPC platforms. Results show that the solver scales reasonably well up to 256 cores. Further profiling shows that the scalability is greatly restricted by global reduction,...

This paper takes "The research and application of scheduling clock synchronization system" science project of Jilin province electric power company control center. This paper develops a time synchronization management module based on VxWorks embedded system in the end station dispatching automation clock...

Reliable CNC machine tools can make the industrial production efficient and stable. The reliability of CNC system is a hot topic in the field of mechanical engineering. It is very meaningful to make suggestions to improve the reliability of CNC machine tools by collecting and analyzing the operation...

The power electronics control system can be designed in the discrete domain or continuous domain. In consideration of the digitally control and delay of actual system, it is more accurate to design the system control parameters in discrete domain. This paper firstly establishes the discrete domain model...

Using the traditional phase-shift angle, the differential delta-connected transformer is not able to boost voltage. Broadening the phase-shift angle of the autotransformer can boost its output voltage. But the greater phase-shift angle will increase the equivalent kilovolt ampere (KVA) rating as well....

The train storage batteries are mainly providing power for train control system and emergency ventilation system. The performance of the vehicle battery status directly affects the safety of the train. Because the cell of batteries is difference, leading to a sharp drop in battery performance and cycle...

Four coils magnetic resonant wireless power transmission system was constructed, and the efficiency model was established by using the theory of mutual inductance. The analysis of the maximum efficiency is based on two part factors, which are driving source and coils. The adjustment strategy of load...

Abstract: The measurement accuracy of the electronic current transformer are susceptible to environmental factors and interference of external magnetic field. Based on analyzing the effect of temperature, primary wiring and harmonic factor on the measurement accuracy of current transformer of rogowski...

The RSC is generally controlled by using PI controller, but its narrow bandwidth and slow transient response speed limit the LVRT capability of DFIG. So, a LVRT strategy-based multi-controller switching is proposed in this paper. According to different rotor current setting value, the corresponding control...

According to the problem that difficult to build accurate model of equipment due to DFIG complex operation condition and strong coupling characteristics of multi state variables , a intelligent data mining method was applied to the early fault warning and diagnosis of wind turbine equipment. The wind...

In this paper, a concept of self-healing of high-voltage power grids and their research status are first introduced. Based on that, a new high-voltage power grid self-healing scheme is proposed. The collections of protective trip information, i.e. action set of each fault point, are initially utilized...

The structure of Pulse load is complicated and the load characteristics is closely related to the work mode, in order to study the micro grid operation characteristics under pulse load and the different parameters of pulse load on the influence of the micro grid operation characteristics. This paper...

In this paper,we investigate the relationship between the outage capacity and the transmit power.Finally,we derived the energy efficiency(EE) based on outage capacity for the distributed multiple-input multiple-output(MIMO) systems under the idealistic power model and the realistic power model,respectively.Then...

The fluctuation and intermittence of renewable energy sources power poses a great challenge to the stable operation of power system, which needs power conversion system(PCS) to provide spare power to achieve dynamic balance of supply and demand for the power grid. Cascaded H-bridge converter is a main...

In order to estimate the scales and subsidies of China's offshore wind power before 2020, the annual generation of China's total planned offshore wind power projects was analyzed and calculated based on existing engineering data as well as offshore wind resource data, performance parameters of wind turbines...

With the rapid development of PV charging station with storage system, due to the inadequate utilization of solar energy in traditional off-gird charging stations and grid-connected charging stations, this paper present a novel connecting and off-grid PV charging station with storage system, which with...

ABSTRACT: The Development of Power Supply Scheme for Industry Expansion is an important business of power supply company's external service. With the continuous improvement of electricity demand, the traditional model relying on paper files and on-site exploration has been difficult to meet the needs...

According to the main business situation of the current enterprise management of power grid enterprises, we divided the identified key coordination points of business into five categories: the process of implementation, the timeliness of implementation, the accuracy of implementation, the compliance...

With the rapid development of China's national economy, the increasing trend of global economic integration is becoming more and more obvious. The competition of various industries is becoming more and more intense. As the pillar industry in China's national economy, the development of electric power...

Using small commercial UAV equipped with a simple visible light camera, to obtain the depth information of power line and the ground by monocular or binocular vision is the focus of research. Among them, how to use digital image processing method to extract the power line quickly, accurately, automatically...

A video data sampling and transmission system is designed for video monitoring based on wireless mesh network. Discussion is made on the use of standards, working frequency, network infrastructure, coverage solutions, link budget, frequency planning, power supply, supporting transmission and AC design....

Abstract.Underwater localization are an importantpart of underwater sensor networks (USNs). USNs attracted significant attention, they are widely used for many applications, such as tsunami before the reaching inhabited areas, pollution monitoring, civilian and military applicationsOcean resource exploration,...

The switching equipment on traditional networks have limited capabilities and the exchange of the switching equipment is often associated with long time frame and high development cost. SDN deployment controller under the flow table rules also exists to handle message delay. In this paper, we propose...

Abstract: To solve the prediction problem of hybrid data in users' consumption information of telecommunication, the paper use the fuzzy K-Prototypes (FKP) and support vector machine (SVM) combined model to improve the accuracy of users churn prediction. In the combined model, FKP is adopted to cluster...

Wildfires can cause transmission lines to trip, which can prove difficult to reclose successfully. Using satellite remote sensing technology to monitor wildfires can alert the power sector to potential damage. However, wildfires along transmission lines may have a small burned area and may spread rapidly....

Based on the related generalization of Vague set algorithm of intuitionistic fuzzy theory, this paper applies it to UWB marine ship precision positioning technology, puts forward new research methods and calculation formulas, and constructs the similarity measure between them and obtains new formula...

Abstract.To address the inaccuracy of multi-storey indoor positioning, the paper proposes a method involving WiFi fingerprint positioning based on the prior information of map environment and position correction based on the image recognition technique. First, we establish a model of map environment...

Abstract: This paper considers channel estimation for mmWave communication with massive received array antennas at BS. Instead of estimate the channel matrix, we resolve the problem into two steps. Firstly, one could separately estimate DOA, on the basis of the array signal processing techniques, and...

Pedestrian detection and retrieval plays an important role in intelligent video surveillance and automobile auxiliary driving system. Video surveillance creates mass monitored data among which a little effective information exists and could be hardly found. To settle the problem, based on pedestrian...

Software definition network (SDN) as a new model of the future network architecture system, which gains the academic and industry attention. Large traffic often leads to congestion and transmission of network links. Equal-Cost Multi-Path (ECMP) routing can play a significant role in balancing the load,...

The Ultra-Wideband antenna can effectively improve the system performance, such as range resolution, anti-jamming performance and complex target recognition. It is very important to study the UWB antenna. In this paper, the UWB antenna is discussed and studied, and the influence of antenna size miniaturization...

In order to realize the prediction of air quality of pollution sources, this paper uses the method of wavelet neural network. In this paper, the pollutant concentration values of pollution sources were predicted, so as to realize the monitoring and early warning of pollution source emission. In this...

A short penetrating distance is a drawback of traditional ultra wideband radar systems. A pulse compression technique has been used in UWB radar systems to increase the penetrating distance. However, this leads to an increase in the blind zone. The paper proposes a new method to address this issue which...

This paper proposes a algorithm for 3D near-field source localization, which uses the cross array and fourth-order cumulant. We construct two high-dimensional matrices by using these six fourth-order cumulant matrices, according to the subspace theory, we can extract the rotation factors, which contain...

Early warning radar is able to effectively detect the target utilizing Doppler Effects between the target and radar. The detection effectiveness of the airborne early warning radar is affected by its detection range as well as its detection probability. In this paper, a method for simulating the detection...

Abstract.P300 Event Related Potential (ERP) has drawn much interest in different application of psychological background. An endogenous ERP component, P300, has been widely inspected in detecting deception. Detecting P300 from EEG signals is hard to find because P300 is overloaded with noise and other...

An experimental method and reconstruction arithmetic of temperature field are proposed. The fast Fourier transform followed by a digital low-pass filter and the inverse Fourier transform were applied to interference fringes for removing speckle noise, so that airflow field phase information is in high-contrast...

Abstract.In this paper, we use the method of permutation entropy symbolization to symbolize the original data. It mainly uses the size relation of the adjacent data to symbolize the original data, preserves the details of the original data, and overcomes the problem that global static symbolization method...

Image recognition has the characteristics of large sample size, high complexity and redundant information, which has become a hot and difficult topic in the present study. To solve this problem, a feature extraction and image classification model based on the sparse auto-encoder deep neural network is...

In this paper, a random walk model was established for the EEG signal. The characteristic parameters qt and at were extracted from the original EEG signal by Bayesian inference method. By comparing the global maximum of the autocorrelation function of the characteristic parameter qt between patients...

In digital image processing, classic wavelet algorithm often has difficulties in obtaining accurate wavelet coefficients by using continuous integral formula. Hence, clear and accurate edges of images cannot be detected in the classic wavelet algorithm. To deal with this problem, a new algorithm is proposed...

Many factors can affect the telephone traffic of power supply service center. And telephone traffic forecasting would help to estimate the population size, make schedule analysis and copy with the sudden situation. We use some province data of 95598 call center as an instance to analyze factors using...

This paper briefly introduces the domestic and foreign status quo of protective relaying simulation technologies. It also summarizes the current problems and obvious drawbacks of three existing methods, which can't meet the requirements of large grid's operation. In this paper, a new protective relaying...

The protection system simulation is an important part of the simulation training system for the UHVDC converter station. It is an important indicator of the fidelity of the training system to accurately simulate the protection action after the fault. In this paper, a simulation method for protection...

In view of the problems existing in the safety education and training of Substation, this paper designs a simulation training system for electric power safety accidents. This paper introduces the hardware and software scheme of the system, focusing on production safety accident case, the system uses...

The problem of shortest path solution belongs to the classical algorithm problem, the Dijkstra algorithm has wide research and application, but there are still some shortcomings in practical applications. First of all, in order to solve the problem of low efficiency of Dijkstra algorithm, this paper...

Cleft palate is a birth defect with the resonance between the nasal cavity and oral cavity, which causes an additional nasal formant. And the accurate formant extraction method contributes to hypernasality detection. In this sense, we present a method for formant extraction. The proposed approach uses...

In view of the problem that the artillery tube life is difficult to accurately forecast under the random using condition, through the analysis of the heat transfer process of the inner wall of the tube body, introducing internal heat strengthening hypothesis, the calculation method of the highest inner...

Considering the application of automatic assembly line, the required functions of manipulator are selected and the overall structure is designed including modeling and virtual assemblying. Meanwhile, the strength of some key parts is also checked. Finally, a simplified six degree of freedom (6-DOF) manipulator's...

Shooting stability is an important factor in the performance of wheeled vehicle artillery combat, has always been the focus of the artillery designers. The mechanical properties of the soil are the important factors that affect the stability of the artillery. In this paper, the vibration problem of the...

Jinsha river bridge is the biggest span suspension bridge under construction across the canyon. The analysis of the cable crane is of vital importance. The parabola theory of three spans is used in this paper to design the selection and installation of the sag of the track cable and hoisting cable. At...

Aiming at the NAND flash which is widely used in industrial storage management, the embedded file system named 'Jkffs' is designed, it is a log-structured file system, a direct addressing algorithm is descripted, Tnode-tree, changeble-Tnodelength are used, the method of Chunk array is mentioned also....

Abstract.Bio-speckle is a non-destructive method applied widely in detection of seed viability.This paper explored the application of the Generalized Difference Method(GD),a bio-speckle image processing algorithm,in classifying garden pea seed viability quantitatively and qualitatively.The experiment...

Given that the teaching of three-dimensional software professional skill training is not corresponding with the actual demand of enterprises, on the basis of project-driven teaching, we introduce Witkey to build a training mode of three-dimensional software professional skill. The application of this...

Abstract: the UAV attitude calculation is an important technique in UAC's technology, many other teches are dependent on it, read the sensor's signal, and calculate after trans is the main method of UAV attitude solution by now, but this kind of method use the software method to calculate in general....

With the continuous development of computer technology and CAD / CAM technology, people in the traditional manufacturing industry is no longer satisfied with the traditional machine tool design, so they now use the pop-ular 3D model printing technology. 3D printing technology could build geometric object...

Abstract: In this paper, we design a cross-platform minority language translation system, which based on HTML5, and combines CSS, with JavaScript and other web development techniques. At the same time, through the Alibaba open source framework Weex the system can realize cross-platform operation, we...

For enterprise decision-makers, it is crucial to timely find technology competitors and analyze competitive situation of industrial technology. A method for discovering technology competitor groups based on graph clustering is put forward to improve the precision of clustering results. The method extracts...

In this paper, we construct the maximum entropy model, which improved the feature function and training set, to calculate the relevance degree of Chinese news and selected topics, and apply them to Chinese news event relevance recognition. According to the example of "Shandong vaccine event", the relevant...

Abstract: with the rise of biotechnology, the similarity between fruits is growing, which has some impact on our lives. Hence, it needs to design a system to classify the types of fruits. If the fruit is placed over a certain period of time, it will be infected. Meanwhile, it is also important to classify...

With the increasing development of science and technology, for a university, the proportion of science research activities and research capacities is increasing gradually in assessing its overall strength. By means of information technology for managing the daily research work, integrating scientific...

One of the key problems in the construction of the entity attribute knowledge base for natural language understanding lies in domain attribute words acquisition. It is hardly to get these entity attribute word manually. This paper proposed a method of attribute words acquisition, which could acquire...

The Internet of Things (IOT), "The Third Wave of information industry", has brought more and more people to pay attention to. Within the framework of game theory, this paper analyzes the relationship between consumers and the Internet of Things. The results indicate that the active consumption in the...

An entity business based big data trading platform will be researched and designed against the defects of the traditional large scale business under the environment of big data. The platform will follow five steps: step one, use hardware equipment to collect basic information of the merchants, commodities...

Abstract.In order to make up for the management defects of the spare parts management mode in the converter substation, combining the thinking mode of the internet of things to improve the management mode of spare parts, and realize the management of spare parts and spare parts to further enhance the...

With the expansion of the power information network scale, various network threats are also increasing. In order to excavate security threats in power grid by making full use of heterogeneous data sources in power big data, this paper maps heterogeneous data in different formats to a unified embedded...

With the rapid development of the network scale and its applications, network security threats continue to increase, a single network security protection technology could not meet the requirement. Network security situation awareness can dynamically reflect the overall network security and predict network...

Natural Language Processing has reached the stage of semantic analysis. As a tool for semantic analysis, semantic role labeling (SRL) is becoming more and more important. But the SRL is not specifically applied to the marine field in the past. So this paper is a study of SRL based on ocean big data....

For the problem of enforcing mandatory access control onthe data nodes in Hadoop, there exists some limitations by analyzing its own the token-based authentication scheme. Therefore, we use the hash chain password method to improve the original authenticationscheme. By analyzing the security, the novel...