Torque Converter Clutch (TCC) works longer than ever before because of slipping technology intervention. The friction coefficient of TCC friction plate will change with temperature. In order to get the dynamic friction coefficient and also ensure the friction plate temperature not too high, TCC temperature...

Amphibious vehicle for water resistance are complex and difficult to accurately estimate oh, analyzing the force characteristics affecting water sailing by sailing amphibious vehicle posture resistance characteristics of the vehicle. Amphibian Vehicle analyze the composition of the water resistance,...

At present, most of the factories carry materials by hand about ceramic. This paper designed the structure of the product with the automatic pick-and-placing manipulator as the research object. Furthermore, it applied 3D model and motion simulation to the product through SolidWorks. Then it gave a design...

With the continuous development of micro grid technology, the power energy management system has gradually become a research hotspot. Micro grid energy management system can be divided into two control structures, centralized control and decentralized control.The multi-agent system is the best choice...

The paper aims at the frequency analysis problem of the uncertain structure, takes the space beam structure with interval parameters as the research object. An expression of the relationship between the structural natural frequencies and the interval parameters is presented. With the partial derivative...

This paper studies the globoidal indexing cam mechanism of tapered rollers and deduces the contour equation of the globoidal indexing cam of tapered rollers using the spatial meshing theory and rotation matrix. The paper focuses on the processing difficulties and a solution of a cutting tool controlling...

Tunnel exploration is a kind of method with high efficiency and economy, but special tunnel exploration drilling rigs are scarce. ZDY1900S type all hydraulic tunnel drilling rig is a kind of equipment designed for tunnel exploration, also can be used to drill gas drainage holes, water exploration holes...

Novel D-A type conjugated organic molecules composed of central fluorene units and cyanoacetic acid terminal groups have been designed and constructed. The article was aimed at improving the solubility of small molecules by introducing aliphatic chains, and improving the optical and electrical properties...

A novel electron donor unit based on phenothiazinehas been designed and constructed. The target compound (2E,2'E)-3,3'-(5,5'-(10-octyl-10H-phenothiazine-3,7-diyl)bis(thiophene-5,2- diyl))bis(2- cyanoacrylic acid) was easily synthesized in high yields with a milder and efficient route via the Knevenagel...

Aliphatic chains and cyanoacetic acid could improve the solubility and the optical and electrical properties of small molecules. Novel D-A type conjugated organic molecules composed of central carbazole units and cyanoacetic acid terminal groups have been designed and constructed. Optical properties,...

Novel organic molecules composed of central 1,1'-binaphthalene-2,2'-diol have been designed and constructed via the Vilsmeier-Haack reaction, which offers a much milder and more efficient route over three steps. Optical properties of the resulting molecule were examined by UV-vis and fluorescence spectroscopies...

To fulfill the requirement of the torque transmission for the medium and small displacement vehicles, design a magneto-rheological fluid dual clutch (MRDC). MRDC adopts magneto-rheological effect of magneto-rheological fluid (MRF) to transmit torque. Only by changing the current in the coil, the separation...

To transmit a large torque and solve the effects of high speed rotating conditions on the properties of magneto-rheological fluid (MRF), a multi-cylindrical magneto-rheological fluid clutch (MRC) for B-class automobile is designed. The expressions of transmission torque are established. A sample MRC...

At a time when the whole medical level is promoted, the most commonly used intravenous injection products have not changed much, in the meanwhile many problems arise. Based on the barrier-free design concept and eco technologies, through the eco-criticism aspect and the environmental ethics aspect, the...

Based on the magneto-rheological effect of magneto-rheological fluid (MRF) and the work characters of dual-clutch transmission (DCT) put forward a new type of automobile transmission: magneto-rheological fluid dual clutch transmission (MRDCT). The MRDCT has simple structure, no wear, low energy consumption...

PID controller was widely used in various kinds of control process for its good stability and high reliability. But PID control system can not reach the expected effect for some nonlinear and time-varying characteristics of complex production process control. The fuzzy PID control method was put forward...

The gallop of high voltage transmission line can lead a mass disaster to power facilities but it seems that people are not clear totally about the galloping mechanism. To make sure the safety of power grid, this paper studies deeply on the galloping oscillator model of transmission conductor and given...

A movable test system for thermal performance of domestic solar water heating system is proposed to solve the problem that fixed test system has low utilization efficiency of climatic resources. The test system consists of a bus body, closed pipeline system, measurement and control system for temperature...

With the development of society and economy, to meet the people's life,the urban construction is to rise.Amongthem, as an important part of civil structures, prestressed structure with good technical and economic indexes and the widespread usage is widely used in various fields of urban construction.Being...

To improve the accuracy of analog circuit fault diagnosis, on account of the problem that is difficult to obtain a high accuracy of the test results for a single model, based on combinatorial optimization theory, an analog circuit fault diagnosis model based on dynamic Bayesian network is proposed. Firstly,...

Grid-side power converter is the key interface of the larger-scale wind power system connecting to the grid, with the continuous improvements of the penetration rate of the large-scale wind power equipment, the connected grid converter device plays more and more prominent influences on the large grid....

This paper studies on non-contact charging system for performing robots based on the technology of the electromagnetic coupling resonance. Besidesthe system can charge the battery in the process of performance.The structure of the Wireless Power Transmission(WPT) is given,and its working principle is...

The paper designs a performance test device to detect the performance of the magnet-orheological retarder at different temperatures,different magnetic fields and different speeds, and completed the experimental study. The device structure has the characteristic of simple, reliable drive, convenient and...

Big data transmit within the wan efficient and steady is the premise of the big data applications.The solution of traditional wan data transmission is mature, but there are many limitations in the era of big data. Transmission efficiency is poor and it is not apply to multi-source data transmission.The...

In this paper, we summarize the progress in the aspect of increasing field of view in adaptive optics. We present the isoplanatic challenge and the limits of conventional adaptive optics. Moreover, we briefly list the development of tomography and researches on the error of tomography in theory and experiment...

There are many difficulties to establish a real satellite receiver in a laboratory environment.The satellite simulator can replace the satellite receiver to simulate the satellite signals.In this paper, it analyses the advantages of the satellite simulator in the time synchronization detection and consider...

Thinning is one of the main reasons that caused parts scrap, the geometry size is not accurate and the finished part has a poor quality in the process of cold stamping. Based on the orthogonal experiment method, LS-DYNA software is used in this paper to carry on the deep drawing process of box parts...

Basing on the operating wideband requirement for today’s mobile communication environment, a new antenna named ‘wide band circular dipole antenna’, which has the advantages of wide band antenna, circular fractal antenna and cage dipole antenna, is designed. A sample of this antenna has been tested after...

With the rapid development of HVDC technology and the commissioning of the HVDC project in recent years, the HVDC control strategy has also been fully developed; As the particularity of the point-to-net HVDC, the control strategy of weak system at AC sending end HVDC has become a new challenge. On the...

The paper makes use of the calculation results of ANSYS software, and establishes a model of corona at ultra high voltage transmission lines with Electromagnetic Transient Program (EMTP).The proposed model is applied to lightning calculation of the conductors. The simulation results indicate that the...

With the development of the smart grid construction, the size of the grid is growing, the business types and the demand are gradually increasing and the high standards of the time synchronization performance transmission put forward higher requirements. This article introduces the power time synchronization...

The paper introduces a strategy “Integration of heterogeneous information in the Distributed System based on REML”. In the strategy, we wrap different formats, distributed heterogeneous informtaion into the unified REML information, and make it to be re-utilized by Web Service which is a method of communication...

Non-uniform factor of wind pressure is used to express distribution unevenness of wind pressure acting on the conductor at same time. USA, Japan and Germany etc developed countries have carried out many field measurement about it. Field measurement research in China is less, it is also found during actual...

Accounting for wind load characteristic of iced OPGW, flow field around OPGW optical fibre, with ice thickness of 5mm and 20mm, respectively, are simulated by solving Naviver-Stokes equations enclosed by transition SST turbulence model, under different wind speed conditions. The results indicate that,...

In this paper, time sequence fuzzy petri net (TSFPN) is proposed to build power system fault diagnosis models. Firstly, on the basic of taking the influence of incomplete and uncertain relay protection alarm information on fault diagnosis into consideration, the structure of TSFPN and the fuzzy inference...

The hand-held excavator was particularly designed for artificial excatating pile drilling. It consisted of a motor, a gear reducer, a drill stem, a frame and a drill bit. The drill stem was an important component of the hand-held excavator. In order to improve the drilling speed of the excavator, the...

SVC is a world-recognized mature and effective dynamic reactive power compensation technology, has been used widely in the world. Through the efforts for more than a decade, Chinese manufacturers have mastered complete SVC technology, own independent intellectual properties, have exported products to...

The transmission lines of power system will produce mutual inductance in the actual operation.The mutual inductance makes parameter of transmission lines imbalance,which will lead to the operation of power system unbalanced.This paper makes a deep analysis in the reason of power system imbalance and...

The stability of power system is affected by the dynamic performance of generator.This paper describes a evaluation method of dynamic performance of generator and the establishes the model of dynamic simulation in BPA,which proves that the method is practical and effective by compared with the actual...

Along with scientific and technological progress, the modern multi-use office buildings of various kinds have risen straight from the ground; under such circumstances, the installment of 10kV switching room has been needed by the users. Besides, to guarantee the demands of grid electricity, the 10kV...

With the development of national economy, China’s needs for electricity are growing and the requirements on quality is also becoming stricter on the power system security, stability and economic operation. Diagnosis of the state of equipment is mainly based on statistical analysis of large amounts of...

This paper offers a brief introduction to the importance and development trend of automation system of transformer substation, proposing the basic concept of integrated automation of transformer substation and analyzing the system structure, communication mode, the basic functions and the development...

In recent years, unattended substation has been widely promoted in power system. Although advanced automation technology has provided technical assurance for the development of unattended substation, the achievement of “no one left” at substations under the current situation requires not only high automatic...

It firstly illustrates the meaning of studying the line loss of distribution network briefly, analyzes the main reasons influencing the line loss of distribution network subsequently and finally puts forward specific loss reduction measures. Theoretical analysis demonstrates that these measures can effectively...

Based on LabVIEW virtual instrument technology, the research project of a testing system is put forward to solve the problems of automation and intelligence. The virtual instrument technology is used to establish the virtual instrument of high integration and high intelligence. According to the test...

In the research of multi-spectral radiation thermometry, temperature measurement depends on the line shape of spectrum radiation remittance. However, in the actual measurement, the combustion, explosion and gasification on special occasions can produce some particulate matters which can create the phenomena...

The requirement and the status of the detection of the moving stick are introduced, and the Hough transform and the canny gradient are introduced to identify the movement of the object in the scene. By extracting the Canny gradient of the moving object, the Hough line detection is performed on the gradient...

Artificial neural network is composed by a large number of processing interconnected unit. It is a nonlinear, adaptive information processing system. It has self-organizing, adaptive and self-learning ability. And can be used to calculate complex relationship between input and output, thus it has effective...

Based on the demand of real projects that new overhead wires are been erected on the running wires with power flow, if zero-sequence parameters of the wires are needed, zero-sequence signals of different frequencies around the basic 50Hz can be added to the newly erected ones to generate zero-sequence...

As an important branch of management science, project management has been developed greatly and especially widely used in power project. However, complexity of power project leads to a series of problem for the management of power project. This essay aims to analyze the real problems in power project...

Electric vehicle traffic accident frequency, in order to solve practical problems, so we design and develop electric bicycle testing platform. Around the power, speed, axle load, such as technical indicators, according to the national standard of electric bicycles, electric bicycles in all kinds of parameter...

Multi-channel switch state detecting apparatus for wireless communication can simultaneously detect multiple switch status, real-time detection of multiple switch status. When the switch does not move, switch status detection means dormant. When the switch has the operation, switch status acquisition...

According to the structure of hydraulic mounting and working principle of the electro-hydraulic servo test bench, established the system model constituted by HEM and test bench, then did the simulation analysis and experimental verification for the vibration system, the results show that the model is...

To meet the charging demand of the electric vehicles (EVs), a new two stage optimization (TSO) method is proposed in this paper with the consideration of the public service attributes of EV charging station (CS) and its impact on the distribution network. First, the locating and sizing scheme based on...

This paper presents real time interactive price scheme of highway charging stations based on energy–carrying by Evs. Construct the optimization model to minimize the time-space variance of power grid equivalent load, calculate and release the price before day; in order to reduce the load of conventional...

With the rapid development of Internet of things technology, the supply chain of agricultural products is increasing maturity in the Internet of things environment. Agricultural products supply chain in our country is in a key period from traditional mode to a modern one. This article finds out the combination...

A three-dimensional W-M fractal sliding model of double rough surfaces was established, and the factors of interface shear strength influenced the whole sliding process was considered. The maximum shear stress of sliding processes were analysed using the finite element analysis and taking into account...

Hot pushing pipe bending, horn mandrel, elbow pipe, Archimedes spiral cord.

Since the laser beam divergence angle is very small, and there is no scattering effect in the space, the positioning technology of laser source is a difficult problem in the field of laser detection and interference. In this paper, a new method based on the scattering of the laser beam is presented,...

Garbage leachate high concentrations of organic matter is considered difficult to deal with wastewater ,The complex and changeable water quality makes traditional processing method difficult to achieve better treatment effect. So the electric coagulation method processing technology application becomes...

Attitude control system of the rigid satellite is a coupling and uncertain nonlinear system with multi-inputs and multi-outputs. This paper presents a sliding mode controller for the satellite attitude system with limited control input and external disturbances. The design strategy can guarantees that...

One of the important equipments in substation switchgear and under high load condition, often appear contact temperature is too high, reliable power supply directly affects the user, or even serious accidents. Based on the comprehensive analysis of the current commonly used temperature measurement technology,...

The combination of distributed power supply and power distribution network is the main way to improve the flexibility and reliability of power system, which has the characteristics of high efficiency, energy saving and environmental protection. The characteristics and model of the solar photovoltaic...

The position detection is the important link in the permanent magnet synchronous motor control. The accuracy of the detection is the key to the high performance control of the motor. Aiming at the problem of permanent magnet synchronous motor pole position difficult to detect, of permanent magnet synchronous...

In this paper, the model predictive control (MPC) method is researched for energy management problem of plug-In hybrid electric vehicle (PHEV). Multi-step Markov prediction method is selected for the prediction. Dynamic programming (DP) is chosen to solve the optimization problem within the prediction...

In this paper, projective synchronization and parameter identification of a fractional-order chaotic system is studied. Based on the fractional-order stability theory, a universal projective synchronization controller and parameter identification rules are designed and proved by using Lyapunov stability...

This paper is meant to put forward and design the third sweeping brush structure which can clean curbstones, corners of walls and etc., optimizing the cleaning structure of the domestic small-sized all-electric cleaning vehicle. The new structure can expand the cleaning area the original sweepers cover,...

Determining the parameters of angular contact ball bearings under preload is the key issue to improve the accuracy and performance of high-speed spindle. The impact of gyro force and centrifugal force were considered, a static and a dynamic model for angular contact ball bearings under rigid preload...

Transformers in operation is accompanied by certain acoustic signals, and the acoustic signals can reflect the running state of the transformer to a great extent. In view of the characteristics of transformer fault and the principle of acoustic signals generation, a transformer fault monitoring device...

Equal-gain combining (EGC) is a conventional linear combining scheme used in non-coherent energy detection receiver for ultra-wideband (UWB) signals. However, due to the nonlinear nature of decision boundary, the EGC results in a suboptimal test statistic. In this paper, we propose a new design for a...

In order to speed up the network “a strong and three-excellent” strategic target,power grid enterprises must increase the technology innovation and management.[2]Integrated evaluation of the technological innovation project in power grid enterprise is an important content of management of technological...

Based on the ZigBee technology, a hand-held portable intelligent home controlled terminal is de-signed on the basis of STC12C5A60S2 MCU, and make a detailed hardware design with floor control module. Main ZigBee (coordinator) module is connected with the handheld terminal and salved ZigBee (rounter)...

Based on the proteus simulation software, the paper realizes the individual timing and separated control on the transportation of Channel A and B with the 8254 counter and 8255 programmable parallel interface. The method of timing plus interruption control is adopted to count the passing time of vehicles...

When the disaster approaches,such as earthquake, landslide, nuclear radiation zone, harsh environment and so on, rescuers can not access to it easily, to solve this,we designed the robot, the robot has six legs, each leg has three free degrees[1]. We adopted the embedded system and servo controller as...

In the last few decades, rectangle earth pressure balance shield machine have been introduced as primary tunneling tools in soft soil excavation around the world. This paper presents research on the performance of the rectangle shield machine. Analytical studies have been carried out to establish the...

With the rapid development of science and technology, three-dimensional modeling technology bridges will continue to progress, which is widely used in bridge engineering, bridge design can contribute to enhance the quality, thus contributing to the sustainable development of the bridge project. Three-dimensional...

Rutting is one of the most challenging and important distresses in steel deck pavement. The prediction of rutting depth is considered to be one of the most complex issues in pavement engineering. In this study, a large piece of linear track accelerated loading facility MLS66 was used to conduct the test...

This paper establishes the three dimensional laminar mathematical physical model of dew point evaporative cooling in plate heat exchanger, according to the simplifying assumptions of the complicated course for heat and mass transfer and counter-current flow in dew point evaporative cooler ,using the...

Life prediction of parts under complex loads has always been an important research topic in mechanical engineering design. In order to make the results more accurate, the stress correction formula for the asymmetric cyclic stress is derived mixed strength degradation law and the characteristics of 45...

This paper puts forward the highway tunnel electromechanical devices’ operating parameter monitoring system is composed of two parts: monitoring network and monitoring management system. Monitoring node puts monitoring data into the database while Monitoring management system chooses MySQL database under...

At present, the performance of the satellite navigation system is based on the application requirements of ground augmentation system, the integrity of the local system, the second generation BD satellite based system of the type of precision into the near integrity algorithm and simulation analysis....

The majority of the distribution network is supplied by unilateral power and has a radial distribution, wind farms connected into grid will inevitably bring a certain extent on static voltage of the distributed grid. Furthermore, the randomness of wind farm output will cause the node voltage fluctuations....

The principle of constant gradient field NMR is same with the logging expert system, the state-of-the -art technology in the world, wherein, gradient design and 2D spectrum inversion algorithm are adopted to quicken the instrument measurement speed while the diffusion coefficients of a fluid can be measured...

By using fluid dynamics calculation, we start a numerical simulation research on flow fields of cylindrical and conical nozzle in order to choose a better structure of cementing ground anchor, at the same time, we also do hydraulic cycle experiments on cylindrical nozzle with different bore diameter....

As a key device to coal mining, the hydraulic pressure support is important for the safety of coal mine. Currently, most of design software for hydraulic pressure support are stand-alone version and only capable of fulfilling partial design work. They have been used for a long time and lacked software...

This paper points out the problems existing in the existing technology of socket, we design a new type of security socket, this paper introduces the basic structure of new type socket, illustrates the implementation process. Through reforming the socket internal structure, solve the problem of the plug...

In view of the huge computing, poor anti-interference ability of traditional detection alogrithm, it does not meet the requirement of the vehicle system, for which this paper proposed a lane detection method based on OpenCV. Preprocessing image in the OpenCV environment, adopting LMedSquare(Least Median...

The unsteady flowing property is complicated in stirred tank, so Computational Fluid Dynamics (CFD) is used to simulate the three - dimensional flow in this paper. Taking the steady-state solution as the initial condition of the large eddy simulation, flows in stirred tank are analyzed at different time....

Unsteady flow and the interface distribution in the stirred tank are studied by the large eddy simulation and multiphase flow model. The result shows that the two-phase interface starts from the paddle. Finally inverted cone interface is generated by the screw move. With mixing time passing by, the interface...

The finite-element linear analysis model in the typical rotor system is established by finite element method to analyze the modality and critical speed. The result shows that modes of vibration change greatly with different modalities in the rotor system. Torsion angle of the rotor increases gradually...

Aiming at the development trend of printing industry, describes the new green UV-LED drying equipment, design and development of AT89S52 lighting con-trol system based on MCU, and use the PWM dimming circuit and incremental PID control algorithm, a distributed computer lighting control system, the method...

Based on the theory of contact non-linear finite element analysis, the analysis for stress and strain of the connection thread of centralizer is carried out by ANSYS software. The structural weak part was identified. The method of simulation experiment is adopted. The simulation results are compared...

In this paper, FSAE race car is taken as the research object, dynamic performance of the suspension system is studied. 3D model of the whole vehicle suspension system is built by using 3D modeling software, and the kinematics simulation is carried out. On the basis of this, ADAMS is used for dynamic...