A time stepping finite element analysis model coupled circuit field and movement used in analyzing permanent magnet brushless DC (BLDC) motors is presented in this paper. Taking into account the whole permanent magnet brushless DC motor system, taken terminal voltage as input quantity, transient electromagnet...

A diagonal fuzzy variable structure contrail tracker is designed to the established system model on 2-DOF, which is based on the movement requirement of the terminal of the machine and the kinematics analysis giving the anticipant angle displacement of every performing part under a definite disturbance....

In-depth analysis of the composition and working principle of the anti-lock braking (ABS) system hydraulic control unit (HCU),establish the mathematical model of the major components of the solenoid valves, motors and pump, establish the model of the HCU in the MATLAB / Simulink environment . By simulation...

During long-time operation, thermal deformation of heat exchange pipe weaken the capability and reduce the reliability of heat transfer system, especially the heat exchange pipe with initial bending in high temperature storage condition will make problem more seriously. The finite element simulation...

A new method for image denoising is proposed in this paper. Firstly, apply the Lifting Stationary Wavelet transform on the denoised image. Secondly, Gaussian scale mixtures (GSM) is combined with the marginal distributions of neighbor coefficients in the nonsub-sampled contourlet domain are modeled....

A Model-based rapid algorithms development platform for Motor Control Unit (MCU) is constructed using the latest TI’s C2000 series TMS320F28335 which supports floating point arithmetic, integrated with high power IGBT. C code can be automatically generated directly from MATLAB Matlab/Simulink model,compiled...

A complete coverage path planning algorithm, which combines local space coverage with global planning, is proposed. At first, environmental model of mobile robot in a space with obstacles is built by Boustrophedon unit decomposition method, and mobile robot realizes coverage in a reciprocating way in...

The intelligent agriculture is one of the applications of Internet of Things (IOT)which has an extensive application and bright foreground. ZigBee Alliance formulated the ZigBee standards in the wireless sensor network technology that are recognized widely as authoritative standard of the Internet of...

Based on the analysis of transverse road header cutting head and toothholder, using VC++ and UG provide UG/OPEN API, Manuscript and UI Styler joint second development, obtained parametric design program of Cutting Head of Road header and toothholder. Use the program, intuitively understand to different...

In this paper, steady flow tests for air movement characteristics in cylinder and intake port flow coefficient of a GDI engine were carried out by means of steady flow test bench. Three-dimension numerical simulation model was established with consistent boundary conditions of steady flow tests. Experiment...

In this paper, a new variable M/T method called leap variable M/T method is introduced for speed measurements by optical incremental encoders in motor servo systems. In this method, both encoder pulse and high frequency clock pulse are counted in a variable interval as conventional variable M/T method...

Distribution grid will be greatly influenced when large scale electric vehicles are simultaneously charged or discharged. Firstly, the assumptions related to the charging and discharging power of EVs are discussed, and the probability of daily driving distance is examined. Secondly, the probability models...

The performance of fuel economy and emissions reduction of hybrid electric vehicles (HEVs) strongly is affected by the target driving cycle. So, the characteristics of the driving cycle play an important role in the hybrid powertrain matching and the control strategy designing. However, the mathematic...

Holes machining path planning is of great significance to improve the efficiency and quality of the processing of porous parts. Hole group on the characteristics of size, shape, and location of different multi-bit processing optimization and process optimization, a reasonable choice of the machining...

Regenerative braking is one of the important ways to extend the driving mileage of pure electric vehicle. Through analyzing the brake regulations and the vehicle dynamics, a control strategy was proposed to solve the problem on braking force distribution for the pure electric vehicle. The rate of regenerative...

This paper presents a design of regenerative braking system (RBS) for a parallel hybrid electric bus using coordinate control algorithm. The coordinate control algorithm is mainly composed of four parts for driver intention identification, brake force distribution, coordinated control with Anti-lock...

In this paper, the problem of heat and mass transfer in Solar-wall System is solved by lattice Boltzmann method. The lattice Boltzmann equation is governed by the heat conduction equation. The heat transfer and flow characteristics for the Solar-wall System with air as heat transfer medium are simulated....

The variable relation between oil groove section parameter and convection heat transfer coefficient have been researched at synchronization state under the condition of same flow area. On this basis, three oil grooves have been ameliorated, thermoplastic contact finite element model for the initial friction...

During tumor thrombus formation in the cell disease or malignant cancer cell adhesion,it can impact to the invasion of the blood flow around,and Discusses the drug molecules into the tumor tissue, in the law of non-equilibrium diffusion process to identify drug molecules, and tumor tissue of the collision,...

Based on the CCD imaging device, a video system is presented to imaging the bottom of deep pipe. By laser beam irradiation, the bottom of deep pipe is detected by CCD chip , which is small view field and large focal length. Then, CCD chip conveys the bottom information to the SQ606 processor, by image...

In this paper, the design scheme, technical route and system structure of the remote interactive engine room resource management simulator are proposed based on the study of the engine room resource management project. This paper introduces virtual reality technique, visual C# and IE real-time interaction...

Ionic liquid [HeMIM]Cl was prepared and then used to synthesize phenol formaldehyde resin adhesive by in-situ blending with phenol and formaldehyde using base catalyst. The chemical structure of hybrid adhesive was characterized by FT-IR, as well as the effects of the ionic liquid amount, the molar ratio...

Recent developments of EEDI (energy efficiency design index) which is an indicator of ship’s energy efficiency level imposed the cost effectiveness of sea-going vessels. Optimization of the ship’s total energy system is studied in this paper. This study is focus on optimum load sharing control, which...

This paper presents an approach of computing the parameters of quartz crystal microbalance (QCM) equivalent circuit model using the least squares algorithm in MATLAB. Modification of the measured data’s order in the least squares algorithm was implemented so that the precision was im-proved. Compared...

The problem of dynamic thermocouple compensation is considered. Taking into account the nonlinear dependency of the thermocouple time constant on fluid velocity, a thermocouple model and a time constant model are proposed successively for estimation of nonlinear thermocouple time constant. This technique...

Based on the phenomenon that Colpitts circuit cannot drive quartz crystal in liquid phase environment, this paper studies the wet sensitive characteristics of Colpitts oscillation circuit. And we designed a device used as humidity sensor. Peltier element was used to cool quartz crystal until dew occurred...

SPC (Statistical process control) chart is widely used as a useful quality control tool during production.It can monitor and refect the stability of the process of production.But the traditional SPC is not sensitive to small warps, especially in customized fields. Research the optimized SPC control chart,...

Classic meanshift algorithm is widely used in pattern recognition, but its accuracy decrease large when there is perturbation in background. In this paper, to solve this problem, we put forward an improved meanshift algorithm which is based on self-adaption weighting meanshift algorithm. At first, we...

Nowadays, moving body recognition method is used widely in all kinds of videos. But recognition accuracy of these methods is changed negatively because of complexity of background, e.g. void and noise. In this paper, we put forward a new recognition method with background robustness. Firstly, we get...

Determination of the location where the shunt reactive power compensation devices is important for the enhancement of the power system voltage stability and the decreasing of power losses. With the method of modal analysis, this paper adopts bus voltage participation factors to solve this problem. In...

With the method of modal analysis, the full Jacobian according to the power system power flow equations is studied and a method to identify the suitable bus for loading shedding is proposed in this paper. The proposed method makes use of the participation factors corresponding to the active power, by...

Using the multi-body system dynamic method, a steering mechanism simulation model is built and dynamics simulation analysis is studied. We have built a flexible tie-rod model and attained the natural modes using the finite element software of ANSYS. In this paper, a rigid-flexible coupling steering mechanism...

Existing valve spring designs are using the deterministic optimization method without considering the uncertainties in manufacturing and assembling process. We propose to take them into account at an early design stage in order to ensure robustness which is less sensitive to the uncertainties of design...

Study on decision support features of mega and complex projects, summarizes the unique characteristics of its decision-making process, described the importance of the whole process of decision-making, combined with the latest advances in data mining technology, applies an coupled model(data mining-decision...

Based on the laser straight line dissemination rule, an optoelectronic measuring method is presented to measure straightness of the deep pipe with a diameter of 30mm by using the quadrant detection, precision mechanical structure, image processing and SQ606 processor. The overall structure of system...

Aiming at the uncertain problem in analog circuit fault diagnosis, a new method based on Bayesian network is proposed. Given a set of measurements from the circuit, and a set of possible faults, the task is to calculate the probability that the faults are present. This paper then discusses the methodology...

with the development of high technology, inverter request higher capacity. However, the traditional two level inverter capacities of the power electronic devices have been difficult to achieve high power requirements. Therefore, the national science and technology workers continue to put forward a variety...

In the non-road vehicle transmission systems, it always has early damage in the input shaft bearing. Gearbox simulation model is established by Romax software. Based on the different load spectrum of all shaft bearings and Adjusted bearing damage rate prediction method (instead of ISO 281), rolling bearings...

With the development of the internet and computer technology, the image protection becomes more and more important. In order to strengthen the robust and safety of the image protection , this paper mainly improve the encryption algorithm of harsh sequence and propose the theory of using chaos theory...

The cooperative control of technical indices of various unit processes is an essential operation management process to gradually achieve wide-area optimization of the production process. There are so many factors, and the adjustment of which is coupled. This needs to be taken into account when to perform...

This paper addresses a model reference adaptive controller which has simpler structure, fewer adjustable parameters, easier operation and accurate tracking capability even in the presence of external disturbances and uncertainties. The controller is applied into the perforated mill automatic speed control...

In order to solve the traditional identification method limitations, This paper presents an improved artificial fish swarm algorithm, Through the experiment of a typical Needle-in-haystack problem, Show that the improved artificial fish swarm algorithm has better ability of global optimization, faster...

This paper introduced the development method of ABAQUS pre-processing modules using the Python script language as well as the function and the editing process of the ABAQUS script interface. Using the developed parametric GUI user platform, we can achieve different structural parameters of the brake...

Output power of Photovoltaic cells with nonlinear characteristics is affected by temperature, light intensity and load. In order to improve photoelectric conversion efficiency, maximum power point tracking MPPT is required. According to the mechanism and control methods of Maximum Power Point Tracking...

When under pressure, the piezoelectric materials produce electric charge on its surface, the foot continuously produce pressure on the earth when human is walking, if the shoes fitted with piezoelectric ceramics, piezoelectric ceramics is continuously under pressure, and Continuously generate charge,...

A kind of analysis method in which SVM is used for power transformer DGA is proposed in this paper. This method uses the SVM algorithm to classify the composition of DGA in transformer and diagnoses the fault of the transformer. At the same time, it introduces the fuzzy membership function, and it can...

A kind of fault diagnosis method for power transformer based on multi-SVM information fusion is proposed in this paper. Based on the "one against one" multi-classification SVM and pairwise coupling method, the multi-classification SVM probability outputs are obtained and regarded as the basic probability...

Based on posterior probability of support vector machine, the analysis of dissolved gases in oil and the data of electrical tests are used comprehensively to recognize internal fault positions of the power transformer. This method not only inherits the advantages of the support vector machine for small...

Condition Based Maintenance (CBM) technology is widely used in high-voltage electrical equipment. However, there are complex links between them, what makes the single decision can not meet the requirements of the actual production. This paper presents an improved method - Fuzzy Analytical Hierarchy Process...

A type of Automatic Mechanical Transmission (AMT) without clutch and synchronizer for pure electric bus is introduced in this paper. The shift process model of this type of AMT is created, and the factors that affect the shift process are analyzed. Based on this shift process model, the shift control...

This paper proposed a beamlet-based method of extraction from pavement crack images. Fitstly, we transfer the collected pavement crack images to the binary images using Otsu's thresholding segmentation algorithm, then the beamlet transform was exploited to extract the linear features of cracks from the...

BP neural network is applied on fault diagnosis of automobile engine in this study. Actually tested fault samples of unstable idle speed are used to train network. The results of tests prove that applying BP neural network on fault diagnosis of automobile engine is quite efficient. This method has high...

The 3/3 Phase Double-winding Induction Generator is designed for the high speed of the primal rotor. It is 2500 commutating asynchronous generator. An exciting winding is designed in the stator, and the control scheme is implemented by a static exciting device. In this paper the circuit principle is...

Based on the principle of IVI, IVI-MSS and IVI-Signal, this paper has proposed a conception of function interface based on COM technology, and introduced its designing and model structure. Networked ATS was designed and implemented based on function interface and the design thinking of COM and module.

A novel video object segmentation method combines change detection and edge detection is proposed here. The process of the algorithm can be divided into three parts: motion detection, spatial segmentation and temporal-spatial filter, which integrates the spatial and temporal information of the video...

Considering high false alarm probability of BIT and oversize of off-line ATE, the paper studies and designs an online automatic test system. The interface signals of radar line replaceable units (LRU) on working condition are leaded out by three-port conversion card and conditioned with insulation technology,...

In order to achieve the reconstruction of distribution network, the partition method and the parallel tabu search algorithm were introduced. Distribution network was simplified as ring network which only contained branch-groups, and the necessary conditions for the reconstruction of the distribution...

On account of the regional balance requirements of reactive power, this paper proposes automatic adjustment method based on reactive power distribution factor for the trend. In this paper, the equivalent impedance of the -type equivalent circuit is as the electrical distance to strike the reactive power...

With expanding scale of modern power system and cross-region connection of power grid, the system often run closer to the ultimate state. So the security and stability problems become a focus of power system. This paper proposes an accurate regional-equivalent-system model, and the transient energy function...

To take account of the fact for an automotive hydraulic power steering system have serious energy loss, this paper discusses the configuration and the action principle of a new variable displacement of double-action vane pump, which consists of a floating block and rate compensation characteristics....

The heterogeneity of information in multi-sensor systems in power system makes information fusion process more difficult, and results in divarication of information fusion. Aiming at this problem, this paper presents an automatic information fusion framework. The main contribution is the method of semantic...

Many countries are conducting research on the live-line maintenance robots. Trajectory plan of the manipulator is introduced. Propose a method of trajectory plan. Using Cubic polynomial interpolation algorithm, the joint angle solved by inverse solution can be determined by plan_ algorithm, and the plan...

This paper proposes a smart domestic gateway used to manage power consumption, which realizes the interoperability across wireless sensor network (WSN), Wi-Fi and Internet. This system achieves smart home power consumption management. The implementation of hardware and software of the gateway has been...

This paper uses digital signal processor control horizontal continuous casting traction motor three states of positive rotation, inversion rotation and stop, to achieve the copper pull, stop, reverse thrust sport. At the same time, we can improve the yield, reduce the production cost by change the casting...

The paper presented the design and implementation of the multifunctional smart power socket based on Cortex-M3 kernel STM32F103 MCU, using Zigbee technology for network communication and FreeRTOS as task scheduling management. The hardware design and software framework of smart power socket are described....

This paper presents an innovative damping characteristic of regenerative based on passive damper and permanent magnetic synchronous motor torque and speed characteristic. Different damping characteristic models were incorporated into single degree freedom of vehicle model and investigated. Simulation...

An IGBT cell structure based on semiconductor physics were designed. The process parameters of the high-voltage IGBT have been calculated and adjusted. Using the optimal device’s dimensions, the doping concentration was analyzed systematically. Additionally, a simulating model of IGBT was compiled based...

The high pressure turbine blade of CFM56-7B engine is risky to crack, it’s failure modes include transition zone crack, shank rupture, min-neck damage, edge of contact and split-shelf clog, which could be modeled and simulated by finite element method. The root cause of crack is found by aforementioned...

Pipeline systems are widely used for transportation of petroleum and natural gas. It is clear that a continuous and automatic monitoring system is very necessary for petroleum and gas pipeline system. This paper describes an algorithm of 3D sensor node deployment based on petroleum and gas pipeline architecture...

The aircraft fuel system simulation as an important part of aircraft design is a complex systems engineering, it is one of the experimental project to ensure the success of aircraft design. The test verifies the aircraft fuel system's correct and reasonable of design and calculation and verify that the...

Museum display design is a display art, which needs to compose a visual display form with strong series of art image in a certain space environment, making the audience accept the exhibition information in the process of flow in a reasonable and effective way. This thesis analyzes the design theme of...

To reduce fuel consumption, a simulation model of range-extended electric vehicle for city bus drive cycle is established and a fuzzy control strategy to maintain battery SOC is put forward. The fuzzy controller’s input parameters are battery SOC and the change rate of SOC. Confirmed by the experimental...

Hybrid power systems, formed by two motors and high-energy-density batteries in appropriate ways, provide high-performances and high-efficiency power for electric bulldozer. This paper firstly constructs the mathematical model of driving motors system based on the design of dual-motor-driving propulsion...

In order to study the stress and strain characteristics of working mechanism for a full hydraulic backhoe loader, a 3D entity model of the working mechanism was established by Pro/E, by importing the 3D model into ANSYS, the finite element model of organ was built by the interface of Pro/E, and three...

In order to master load magnitude a drum and its changes under lacking picks condition, find out the influence on drum loads when lacking picks on helical vanes, explore failure reasons of a shearer drum, a mathematical model of shearer drum loads was analyzed and established in the paper, using Matlab...

Presently, the slowly development of DFT is mainly due to the lack of effective testability validation. The validation is an important part of the DFT, it will accurately detect equipment Fault Detection Rate (FDR), Fault Isolation Rate (FIR), Fault Alarm Rate (FAR) and make sure other important indicators...

Classic statistic method can not make use of the history test information and produce the evaluation conclusion with low confidence level and high risk under the condition of small sample, a new testability evaluation method based on test data in development stages is proposed in this paper. The result...

Ship collision, not only damaged the hull, threatening the goods, or even in a boat crash, serious marine pollution. The reason, is not difficult to find the vast majority of crashes are caused by voyagers negligence, negligence and serious violation of international regulations for preventing collisions...

The piston is a "heart" of the engine and its working condition is the worst one of the key parts of the engine in the working environment. So it is very important for structural analysis of the piston. This paper analies and calculates the piston by ProENGEER software to gain a result, which improves...

Based on the comparison between management thesaurus and management domain ontology, this article proves the necessities and practicalities of ontology-based management knowledge organization, and the significance of ontological approaches, which should be adopted to management information organization....

Two dynamic mesh methods— Radial Basis Function (RBF) method and Delaunay method which have been used widely in fluid-structure interaction recently were compared. Primarily, the basic theory of these two methods and the dynamic mesh process were presented. Furthermore, using the variable bandwidth sparse...

Based on the on the already established compensations systems, mechanistic modeling, a sensorless systems is attained. In this Artificial Neural Networks are used to learn through mimicking of the machining parameters with reference to the existing Compensations systems, Finally the performance of the...

In this paper, cloud computing application in the construction of medical information technology, medical cloud platform for large-scale data needs to be efficient flow control, this paper first of several flow control algorithm, algorithm analysis, medical cloud platform the HTB flow control algorithm...

Traffic data-collecting is one of the basal contents of Intelligent Transportation System (ITS). Supply in the paper a design scheme of data-collecting system based on 9S12D64 microcontroller, furthermore, discuss in detail the system's operating principle, hardware structure and software design. This...

This paper studies the key technologies of the computer-aided bone surgery system testing techniques, and mathematical modeling, the combination of computer image processing, built knee replacement surgery in the lower extremity biomechanics line measurement system and validated by experiments.

The air suspension has the characteristics of nonlinear variable spring rate. To improve vehicle handling stability and ride comfort, the characteristic curve can be designed to comply with the vehicle vibration. In this paper, air suspension and whole vehicle were selected as research object, vehicle’s...

Regarding the importance of wet saturated steam dryness measurement, at the same temperature and pressure the dielectric constant of water is much greater than that of steam. When the wet steam flows by the capacitive sensor, the sensor capacitance changes with the steam wetness. A new method that barrel...

A new ZVS(zero voltage switching) Push-Pull converter is proposed and compared with other two high efficiency DC/DC topologies. All of them are suitable for the two stage cascaded converter. In order to simplify the circuit and reduce the size, they work in the open loop control mode. Meanwhile, for...

There were some problems in traditional mining algorithm of association rules: a lot of candidate itemsets and communication traffic. Aiming at these problems, this paper proposed a fast mining algorithm of association rules based on cloud computing, namely, FMAAR algorithm. Firstly, the frequent items...

This paper systematically reviews the research progress of the closed cooling tower at home and abroad. The abroad research of the closed cooling tower has been carried for a long time, so it is relatively mature. Although the domestic research has carried out relatively late, it also made a lot of achievements...

Estimation of vehicle state (e.g., vehicle velocity and sideslip angle) and road friction coefficient is essential for electric vehicle stability control. This article proposes a novel real-time model-based vehicle estimator, which can be used for estimation of vehicle state and road friction coefficient...

A numerical analysis was performed, using three-dimensional finite element method to assess the impact of residual stress relaxation on the fatigue strength benefit of cold expansion. Fatigue lives of cold expansion hole made from aluminium alloy 7050-T7451 under different relaxation time are presented,...

As the requirement for the power quality is increasing nowadays, the distributed source energy has been widely used. The association of different Distributed Generation System (DGS) could cause as many problems as it may solve. Micro-grid associates the distributed generation and the loads as a subsystem....

This paper is based on LabVIEW software to develop a car engine vibration test platform. Completion of the vibration test platform structures, software design of the vibration test platform and test of the vibration test platform, it can analyze radial vibration displacement and power spectra in different...

In traditional Train-Ground Communication (TGC), the mobile node or the mobile network is responsible to handover from one domain to another, although the designer has the route of the trains. A novel scheme on the seamless handover on vehicle is proposed in this paper. The main idea is that the channel...

Due to the rapid development of high-speed railways all over the world, Railway digital mobile communication system is one of the most important parts which bears various services. However, it has been a challenge to support high speed (e.g., above 350 km/h) mobile user with broadband communication in...

According to the functional requirements of mechanical auto parts road simulation vibration test platform, mechanical auto parts road simulation vibration test platform structure is studied and designed, and a vibration simulation test platform entity is developed which can simulate auto parts vibration...

This paper studies the micro sprinkler with two rotation hyperboloid passage of large rotary wheel revolving body. Using fluent fluid mechanics calculation software velocity distribution simulation analysis for five different diameter and seven different water elevation rotating body fluid movement,...

Using for reference international advanced standard and combining with Chinese industry equipment technology characteristic, modernization equipment IETM development technology criterion was established. Current equipment IETM integration development flatform was developed handling IETM key technology...

Image denoising is a classical topic and a difficult problem in the field of image processing. Fourier transform can effectively sparsely represent the smoothing texture part of the image, but can’t effectively represent mutations in the image. The wavelet transform can sparsely represent sharply changing...