In view of the traditional vehicle information systems cannot satisfy the modern vehicle needs. Using the simulation software on the vehicle information system,based on the mutual cooperation of four computers, researching the functions fusion.Experiments show thatthe function of vehicle information...

Software health management is defined as a technology that applies the principles and techniques similar to the one used for system heath management to software systems. The goal of software health management is to maintain software system function and performance and improve software system availability...

In a navigation satellite system, the two-way satellite time and frequency transfer (TWSTFT) is mainly used for time synchronization at earth stations, and system time tracing, etc. The reason why the TWSTFT can realize high-precision time synchronization is its path symmetry; however, in practical applications,...

The paper had studied the human-robot cooperation with moving an object based on a three DOF (Degree of Freedom) manipulator. Firstly?the impedance control based on impedance model for the manipulator had been designed, and confirmed through the Simulink simulation. And then, the impedance parameters...

In order to get a better understanding of the obstacle avoidance of a mobile robot when it is tracking a target,we used Kinect to take the place of the traditional range radar and camera.Tracking part uses the improved particle filter algorithm.To deal with the particle degeneracy problem, a new particle...

In this paper, a fast pupil segmentation and localization algorithm is proposed owing to the characteristics that the operator’s eyeball deflects slightly and the gray level of eye image changes a little. Firstly, in order to segment high quality pupil region, we segment the specific interest region,...

Power Euler-Lagrange(EL) mathematical model of three-phase three-switch Vienna rectifier is set up in synchronous rotation dq coordinate system based on its topological structure. According to power EL mathematical model and passivity of Vienna rectifier, passivity based power controller is designed...

Research the pyrolysis kinetics of eucalyptus and the absorption band and characteristic peaks of volatile pruducts under the heating rate 10?•min-1, 30?•min-1, 60?•min-1respectively. The experimental results show that eucalyptus pyrolysis process can be divided into 3 stages: moisture volatilizes stage,...

Power transformers are key components in power distribution systems and ensuring transformer do not be destroyed in the earthquake is critical to the safe operation of power transmission grid. Finite element analyses of power transformer under the earthquake, dead load and wind load are described in...

In allusion to the problem about electricity behavior analysis in the low efficiency of dealing with huge amounts of data, we puts forward the Fuzzy c-means clustering (Fuzzy c-means clustering, FCM) parallel algorithm based on Mapreduce technology. By decomposing the iterative process of FCM algorithm...

New ultrasonic-assisted brazing technology was adopted to weld mini butt joint by SnBi composite solder with 1.5wt% Al2O3 content and 0.5mm, 0.8mm and 1mm three kinds of copper substrate distance. The mechanical properties of the mini butt joint were characterized by means of the micro hardness tester...

New ultrasonic-assisted brazing technology was adopted to weld mini butt joint by SnBi composite solder with 1.5wt% Al2O3 content and 0.5mm, 0.8mm and 1mm three kinds of copper substrate distance. The mechanical properties of the mini butt joint were characterized by means of the micro hardness tester...

The development of the Internet makes it easier to get data. However, it is more urgent to obtain effective information on the large data which is redundant. Based on the risk prediction system of power intelligent automation, this paper tries to solve the problems of enterprise risk management, and...

Using the method of air enthalpy difference, an experiment on the 3HP air conditioner was conducted by changing the installation conditions. And some relevant parameters of the test system were measured by computer. The results show that, in cooling conditions, the thermal environment of the outdoor...

With the constant expansion of Fuxin grid scale and the rapid development of wind farms, problems related with wind farms become increasingly prominent and voltage of wind farm is affected by changes in wind power active output and reactive output. This paper takes Fuxin area as example to analyze the...

With the construction of northern and western wind power base, large-scale regional wind power grid connection begins to affect power system and several power grid accidents in Fuxin grid resulted in partial off-grid in recent years, causing certain damages on the security and stability of power system....

Line loss consists of two parts: one is the unavoidable loss, such as the lost electric energy caused by resistance heating in the process of power transmission; the other is the avoidable loss, such as the excessive loss caused by the unreasonable power grid operation mode as well as the abstracting...

The analysis and record of data for traditional in-field calibration of electric energy meter relies on artificial work[1], which will easily lead to data error due to human factors and unable to realize standardization of calibration. The complete sets of mobile operation software for in-field calibration...

the advantages of the laser's monochromatic, bright, directional stability and coherence are good, and it is widely spread and applied in the field of precision measurement. In this paper, the method of laser phase distance measurement, based on the characteristics of laser ranging, has made a relative...

In power system, a large sum of harmonic produced by non-linear load will affect the loss of transformers. In the meanwhile, the traditional methods to measure the loss do not have enough adaptability. By analyzing the principle of one side measurement and two sides measurement methods, and making study...

The AHP(analytic hierarchy process) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) are applied to evaluate low-carbon urban development level of 14 prefecture-level cities in Hunan province. These methods not only have various advantages of analytic hierarchy process and...

The choice of the parameters of the secondary sound source which contain the number?position and strength is a key part in the design of active noise control system of power transformer. Countering the practical applications environment of noise control of transformer, acoustic radiation model in half-free...

In secondary path identification of power transformer Active Noise Control (ANC) system, the background noise regards as useful signal, which makes identification result can’t reflect the characteristic of secondary path and affect the stability and convergence of the ANC system. According to the actual...

An energy-saving de-icing technology of aircrafts with high efficiency and energy saving is discussed, which is based on the inverse piezoelectric effect. The finite elements analysis model of a testing skin is developed to analyze the natural modes and harmonic response by the software ANSYS, which...

Building materials are the main products made of coal gangue and coal fly ash. Most of these products contain various heavy metals such as Pb, Cd, Cr, Hg, which are needed to measure in the purpose of safe using and environment protection. In our work, we established a set of method to pre-treat the...

Analyzing and dealing with massive data in time to provide proper and reliable data for advanced applications of substation is one of the main tasks of intelligent substation. This paper introduced the quality identify of multi-source data in detail based on the panoramic SCD model which intergrated...

Electricity production site operation and maintenance work and need to collect operation data, records information about a job, the widespread use of manual recording mode, even if the use of handheld terminal and the function is single. Based on electricity production site information collection method,...

With the development of mobile Internet technology, mobile applications will gradually replace the traditional equipment; become the mainstream of business applications. The operation of the pillar industries of electricity, will gradually realize the mobile application. The emergence and development...

In order to meet the needs of mobile inspection robot drives fast on flat road, and walks normally in the complex environment (roadside stone, grass, etc.). We designed a new mobile platform of robot with the wheel-track. The mobile platform used wheels to drive normally on flat cement road. If the mobile...

In accordance with the problems of phase selection method based on difference of phase-to-phase current, that is, phase selection mistake when double-phase ground fault occur and insufficient sensitivity of phase selection when the positive and negative sequence impedances of system are not equal, a...

According to the problem that a signal generator usually uses a lot of discrete devices which cost a large space and often designed to realize one function? such as sine wave for specified frequency. In this paper, the using of FPGA make the generator flexible and convenient. It uses PLL and DDS to make...

In this paper, we design a basic spectrum analyzer which can analyze the signal with the bandwidth in 10 MHz~100MHz and the minimum resolution in 100 KHz. We utilize the AD9854 DDS (Direct Digital Synthesizer), STM32F407, AD831, AD835 and the TFT LCD to design and implement a system that has menu-driven...

With the development of society, the number of private cars is increasing year by year, leading to parking management become an important issue of nowadays social traffic. The traditional method of manual management of the parking lot cannot meet requirements of large-scale parking lots. Because of the...

With the development of parking lots towards large-scale and three-dimensional, intelligence has become an inevitable trend. In this paper, an intelligent parking lots detection system based on ZigBee transmission protocol is proposed. RSSI value is used to detect whether the parking lots are occupied....

In this paper, we at first proposed a Least Square RSSI Estimation algorithm for the indoor wireless position. Next, a wireless indoor position system is designed based on the proposed algorithm and the PDR (Pedestrian Dead Reckoning) is used to correct the deviation of RSSI indoor position algorithm...

As the traditional agglomerative hierarchical clustering has a higher number of iterations which makes low efficiency of parallel realization on Hadoop, we propose an improved hierarchical clustering method: when the between-class distance is monotonically increasing, by changing the clustering order...

A new method of high-speed object detection using planar capacitive sensor was presented. The planar capacitive consists of two electrodes. A sine signal was applied on one electrode to form a quasi-electrostatic field and another electrode was use to detect the object signal. The voltage of the detecting...

Hexagon socket head bolts are widely used in many engineering fields as fasteners and are common and important parts for engineering, but for some hexagon socket head bolts it is still tedious to build the 3D models and assess their reliability. It is important for a hexagon socket head bolt to do reliability...

Selective Laser Melting (SLM) was a novel method of Rapid Prototyping (RP). The benefits of SLM: simple process, good surface roughness, high-precision molding size, density of almost 100%.The basic principles of the technique, the major problems and present situation in China and abroad were described...

China, the world’s biggest energy consumer, is now facing a severe challenge in energy supplies. While industrial production contribute most of the energy consumption and pollution in China, it is necessary to optimize its energy management. This paper will focus on energy consumption management of industrial...

Bolt joints are widely used in all kinds of machines. The advantage of them is cheap and convenience. For different application fields, the structures of bolts are very different. They are typically lighter for the same strength and provide better heat conduction. As we know that do FEA (finite element...

The Helmholtz resonator is widely used as an effective way to reduce noise around the resonance frequency. But the resonator is a single degree of freedom and has a narrow resonance frequency band which determined by its geometry. This paper used three-dimensional finite element method to calculate the...

Numerical simulation of the PM2.5 filter phenomenon in the internal microstructures of fibrous assembly was carried out three dimensionally by discrete element method (DEM). Eulerian method and Lagrangian method were employed to deal with the gas phase and solid phase respectively. By the direct tracking...

This paper simulated 7 kinds of rock uniaxial compression fracture under different homogeneity (each sample size is 3) by RFPA. According to the results of numerical simulation, the failure of rock is analyzed as follow. The study results indicate that with the increase of homogeneity degree, precursory...

The reliability of process system not only affects the production and qualified rate of the product, due to the imperfect system of process causing the defects in the manufacturing process, but also makes the product producing early fault or reducing the service life. Therefore, the reliability of process...

This article mainly studies the problem of particulate matter. PM2.5 and PM10.0 are the representatives of the pollution level. Comprehensive investigation was been conducted according to the location and the vehicle flow. The distance to the street was divided into three types: the point that near the...

To get a more comfortable working and living environment, air conditioners and fans are widely used indoor. Considering that indoor air quality is closely related to people’s physical and mental health, a university dormitory is selected to measure indoor particles concentration. The possible relationship...

To improve the accuracy of strapdown inertial navigation system(SINS), a non-orthogonal installation scheme of inertial sensors was put forward for single-axis rotating SINS in this paper. Firstly, the principle of single-axis rotation modulation technology was expounded based on the error model of inertial...

processing problem of complex and precise parts with small batch and many varieties can be solved by CNC grinding machine. It belongs to flexible and highly efficient automation machine tool, which represents the development direction of modern machine tool control technology. CNC grinding machine is...

Liquid sloshing in tanks has many important applications in a variety of engineering fields. In this study, based on a CFD solver, a numerical model is developed to study the liquid water sloshing in two- and three-dimensional tanks. The VOF method is used to capture the fluid interface. In order to...

The normal stresses of the coating sprayed on the internal surface of thick walled cylinder, subjected to uniform temperature and pressure change, are determined. The suggested approach enables one to evaluate the normal stresses in the coating and substrate, as well as the interface. The approach is...

As the use of NX70A flat wagon is becoming more and more widely, it is necessary to study the overlong cargo allowable loading weight of NX70A flat wagon. This paper firstly designs several adverse vehicle operating conditions, then builds the dynamics model of NX70A flat wagon and making simulation...

This study investigated the reaction characteristics in a pulse detonation engine, including pressure, temperature, compression ratio, sonic velocity, and detonation velocity, using CEC code and STAR-CD. The former was used for the calculation of equilibrium states, whereas the latter was used for the...

Pellet has advantages of convenient transportation and improving powder performance, so it has been widely used in biomass-energy , feed industry, fertilizer and waste disposal industry. Low pulverulent ratio is the main target of high quality pellets, therefore FEM method was used to predict the influence...

The accuracy of a micro inertial navigation system is greatly influenced by the complex vibration environment of the vehicle, an embedded vibration attenuation system structure is designed and its rigidity is checked. The correctness of this structure design is verified through the modal analysis and...

A spectrum correction algorithm is proposed in this paper to estimate frequency component of a dual-frequency signal accurately, this method is a kind of algebraic algorithm base on the model of dual-frequency or multi-frequency spectrum, and it is a real-time algorithm. The principle of the algorithm...

A trajectory design methodology is developed for autolanding phase of RLV (Reusable Launch Vehicle) based on iterative correction algorithm in this paper. According to the inherent traits in phase of unpowered landing of RLV, geometric structure of trajectory and dynamic characteristics of the aircraft...

This study presented the design and online experiments of a self-paced EEG-based BCI for controlling a car in real world environment. This paradigm using two distinct MI tasks to generate a multi-task car control strategy, including start, move forwards, turn left, turn right, move backwards, and stop....

This paper proposes a novel multi-sensor Bernoulli filter (MSBF) based on the finite set statistics (FISST) for tracking a single target under the presence of detection uncertainty and clutter. The proposed algorithm is an extension of original Bernoulli filter in multi-sensor tracking. First, FISST...

Position error is inevitable in robotic precision assembly task, so force sensor is needed to get information of the environment and guide the motion of robot. In order to describe assembly task clearly, we divided it in three phases: 1.Move to a certain position; 2.Move the shaft to the exactly top...

Based on the basic formula of heat balance calculation, a computational simulation system is developed by LabVIEW, which is of thermal treatment for large spherical tank. This system takes full account of the size and material of spherical tank, and calculates the total quantity of heat and the consumption...

Joint surfaces widely exist in mechanical assembly structures, the local stiffness and damping have important effect on the whole dynamic analysis of the structure. In this study, proposed a normal contact damping forecast model and analyze its damping characteristics, based on the microcosmic mechanism...

In order to improve the measurement accuracy of binocular vision system, a structural model is build. On the basis of it, relational features between target point and structural parameter of system are analyzed, and the effect of each parameter to the measurement accuracy is simulated. According to simulation...

A closed-loop control algorithm has been developed for suppressing the vortex shedding of flow past a circular cylinder in an electrically low-conducting fluid (e.g. seawater). The intent is to avoid both vortex shedding and flow separation from the body, which is achieved through the introduction of...

In this paper, a probabilistic model checking method for mobile robots path planning problem is proposed. Since surroundings always affect the behavior of mobile robots, four main environmental factors are analyzed as influencing parameters. With the map built by randomized sampling-based method, we...

According to the structure of dynamic compaction machine boom, under the condition of each parameter, lists the boom in sudden unloading conditions of motion differential equations, using the finite element software workbench analysis rammer suddenly unloaded and the changes of stress with time to find...

TRIZ is one of the most important tool for innovative design. But the theory that how to use the tools of TRIZ to solve problems isn’t mature. So, this paper puts forward a method, which introduces how to use contradiction matrix to solve problems that we meet when we design products. Firstly, we should...

Noise of gas jet is one of the main noise sources for solid rocket motor, the jet flow field parameters plays an important role in the radiated noise generated. An implicit large eddy simulation (LES) methodology is performed of supersonic gas jet flows in this paper. The flow-induced noise generated...

The invention of 3D virtual fitting technology not only reflects the extension of fitting room in traditional shopping mall, but also breaks the restriction of reality, so users can have richer virtual fitting experience and the technology widens consumers’ selection on clothes. The development of 3D...

In order to control the current smart home products and improve the convenience of the use of special people, this paper designs a smart home control method for speech recognition to control smart home applications. The method is based on the method of voice sensor to receive signals to be pretreatment,...

Cu51.36Cr48.64 alloy was treated at 940? for 15min under different pressures, the Cr phase in Cu51.36Cr48.64 alloy was observed by optical microscope, scanning electron microscope and transmission electron microscopy, and its mechanical and sliding wear properties were measured by means of nanoindenter...

To make the unmanned power substation perform independently and efficiently, the theory and structure of a real-time monitoring system based on audio recognition is introduced in this paper. It focuses on the monitoring and identification process of audio data. Firstly the audio signal of substation...

In April 2020, Atlantis Press was alerted to fake proceedings articles hosted on our platform. These articles, mostly in computer science and engineering, were generated by the SCIgen computer program and were all published between 2006-2018. Immediately after receiving the alert, Atlantis Press initiated...

Head-feed combine harvester transaxle transmits motive force to the header and driving system, with adverse working conditions transaxle is especially prone to failure. It is not easy to detective and recognize faults of transaxle with traditional diagnostic methods as “Listening, Observation and Touch”,...

The bop sealing device for testing of layered water injection well is the supporting tools for blowout preventer of layered water injection well test. Many problems exists in the traditional sealing device, such as difficulty for down-pass instruments in testing initial stage, cable bending caused by...

This paper is designed for wide input range of SerDes chip phase-locked loop circuit, using self-biased technology, there is a wide range of input reference frequency, the need for external bias circuit, and loop bandwidth can follow input reference frequency changes in noise with good inhibitory effect....

The passage is based on the analysis of the traditional processing technology about GNSS relative positioning, in view of the practical orientation of high dynamic, real-time requirements, the passage set up move relative positioning model, and put forward the simulated dynamic test such as car test...

This paper examined HCL and H2SO4 Mixed Acid as the Supporting Electrolyte for Vanadium Redox Flow Battery. The results of Cyclic Voltammetry (CV) and electrochemical impedance spectroscopy (EIS) showed that the MAS sample had a better electrochemical activity than Pristine sample. At 20mAcm-2, VRFB...

With the rapid development of mobile communication technology, mobile botnet comes into being which gives mobile users a great threat. The botnet hacker issue orders through the command and control channel to let the bots launch attacks to gain significant economic benefits. Based on this, this paper...

The dynamic bandwidth allocation algorithm for GPON system based on traffic detection is proposed, and the algorithm of dynamic allocation is studied. According to the existing problems, the improved scheme is put forward.

This paper presents a new method for adaptive spectrum segmentation. In the field of wideband spectrum sensing, spectrum segmentation is regarded as the first procedure to detect sub-band signals. Wavelet Transform (WT) is sensitive to the rising and falling edges of signals in spectrum. Multi-scale...

The paper models an incorporated multi-period dynamic signaling game between one attacker and one defender with incomplete information. It is assumed that the defender of two types for high and low attribute properties pays attention to his innovation and development by accumulating technologies, while...

In order to probe into developing technology for pipe fluid transportation with drag reducing effects by using a flexible tube, an experimental study was performed on the effects of turbulent drag reduction by using sleeve-structured flexible tubes in the operating conditions that there are water and...

Bag of visual words (BoVW) is currently widely utilized as an image representation model. However, conventional BoVW methods usually bring drawbacks such as large representation errors, lack of spatial information and weak discrimination. In order to overcome those, this paper proposes a new image scene...

Visual tracking has been an active research topic which has a wide application in many computer vision tasks such as intelligence surveillance, vehicle navigation, human computer interaction, and so on. Introducing the background into the template set as the negative sample, the representative ones combine...

The traditional electronic equipment cooling system uses electric to drive water pump, it will consume energy. The motor operating power is constant, resulting in a waste of power. After cutting off the power supply, water pumps stop working so that the heat inside the appliance can’t be cleared. In...

Put forward a compound control strategy, which is designed with extended state observer and sliding mode variable structure control. The angular rate control of unmanned helicopter is validated through a Hardware-in-the-loop simulation, the simulation results show that the proposed control strategy can...

The present paper is aimed at introducing the author’s newly developed decision-making method, known as”intelligent decision-making method for The electric car filling in power station Planning and Management”. As we often see, it is a fundamental method to overcome the difficulties brought by great...

Offshore wind power industry develop rapidly in recent years. Offshore wind has many advantages compared with onshore wind turbine. For example, it do not take up land and can make better use of the sea wind resources. However, the flexible components of wind turbines violent vibration will cause the...

The life cycle economy of the power distribution network planning scheme is becoming more and more important in power markets. The model of the distribution network planning and the configuration of switches based on the life cycle cost (LCC) of equipment was presented. The main objective is to minimize...

In order to research the reliability of electric power communication network, this paper proposes a kind of vulnerability analysis method based on business. Firstly, it applies the improved fuzzy analytic hierarchy process to evaluate electric power business importance. Secondly, the business importance...

The AB5-type hydrogen storage alloys La0.7Ni2.5Co0.9-xMn0.1Alx were prepared by magnetic induction melting. The structure and the electrochemical properties of alloys were also investigated using X-ray powder diffraction technique and various electrochemical measurements. All the alloys are mainly composed...

This article adopts Computer simulation and graph theoretic algorithm to choose the most reasonable place to convey drugs. And this article use mathematical modeling and computer programming to solve the problem of transport drugs.

This paper proposes asymmetric cascaded multilevel inverter with unequal dc-link voltage ratio. Meanwhile, it’s proved when asymmetric topology with dc-link ratio of 1:2:4, the output voltage level can be maximized with the same number of devices. For this kind of topology, this paper designs the corresponding...

Aiming at the problem lied in existed methods which cannot suppress grille background completely, a novel method of vehicle-logo accurate localization was proposed. Firstly color invariants and prior information are used for fast localizing license plate in RGB color space directly; and then process...

Owning to its special geological origin, columnar jointed rock mass is a special kind of geological structure with strong discontinuity and anisotropic. In this paper, influence of structural effect on the equivalent modulus of columnar jointed rock mass is discussed via Jointed Finite Element technique...

The regulation of earth resistivity and elastic wave velocity with the change of compaction degree under different moisture contents is studied by experiment. In addition, regression analysis is conducted on the relationship between compaction degree and soil resistivity and elastic wave velocity. Based...

In order to deal with the large-scale data access and massive marine information to provide reliable real-time cloud computing services, put forward the concept of software work flow and construct a system based on cloud platform with software work flow. Software work flow engine is at the bottom of...

The traditional PID controller has a shortage of an-interference performance, parameters setting and time-varying control. In order to improve the output-voltage performance of the inverter and robustness of battery energy storage system power supply, this paper put forward a control method based on...

This article discusses a new GNSS signal tracking architecture with a quasi-open tracking loop. Matched filtering is adopted for PRN code phase discrimination and FFT is used for frequency discrimination, which greatly shortens the duration of the pull-in step after acquisition. There is no loop filter...