Under processing condition that were the average power of 20 W, repetition frequency of 2 kHz, pulse width of 80 ns, spot diameter less than 20 m, cutting speed of 10 mm/s, we succeeded in making 300 m thick gold interconnectors for solar cell panels, by utilizing an optical fiber laser with high power...

Temperature detection is now used for risk early warning in power system. Adopting wireless sensor network to collect temperature information is one of the most crucial applications. In order to accomplish temperature information gathering, hundreds of sensor nodes are placed in power system equipment,...

In order to improve the contact state of the friction surfaces of various parts, reduce friction and wear, improve the mechanical efficiency of power transmission system, and the reliability life of the vehicle,the reliable running-in must be carried out in a short time.In this paper,different running-in...

Cationic starch was used as an emulsifier to emulsify beeswax into latex, which was utilized for lowering the water vapor transmission rate (WVTR or moisture barrier of the paper used as food packaging materials. The method of wet-end addition was used for applying the emulsions to the papers. The weight...

According to the characteristics of the corresponding rigid points in the actual force signal, the background and characteristics of signal analysis are described in this paper for the purpose of obtaining this feature point and the extraction and calculation of the moment of the force signal is realized,...

According to the characteristics of the corresponding rigid points in the actual force signal, the background and characteristics of signal analysis are described in this paper for the purpose of obtaining this feature point and the extraction and calculation of the moment of the force signal is realized,...

in this paper, the simulation method based on AMESim for the common fault of hydraulic system is discussed, two most basic fault simulation methods are summarized, namely parameter setting method and additional element method, and the detailed analysis of each method is given. At last these two methods...

A constant force tool system for the abrasive belt grinding and polishing was developed in the paper. With the addition of the constant force control during the finishing of curved surfaces, the accuracy and the surface roughness could be improved. The constant force tool system would be used on the...

Research quality management task is to discover and solve scientific and technological research and development in the process of abnormal quality situation.It establish and improve the quality supervision and inspection tracking system, strengthen research quality management efforts, discover and solve...

For the deficiencies of the mature view of current object-oriented simulation modeling of production system, the UMLs of aspect-oriented extension , the Advanced Properties-based UML extension mechanism is completed. in this article from the aspect-oriented modeling point of view, give the cell design...

We can get conclusion from experimental effect comparison of electrostatic spray and general pressure spray that electrostatic spray can reduce droplet diameter and narrow droplet spectrum scope as well as increase droplet evenness; influenced by electrostatic absorptive effect, droplet coverage rate...

The present work reported and discussed the results of investigation of employing nano-ZnO and general ZnO (AR grade) to prepare Ni0.15Cu0.35Zn0.5Fe2O4 ferrites. The samples were prepared by using conventional ceramic processing route and sintered between 1150-1250oC. The comparison of sintered samples...

Carbon nano fiber (CNF) was modified by acid oxidation and maleic anhydride (MA) graft in current modification. The CNF filler surface properties were characterized by energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). In addition, the properties of epoxy resin with modified...

In this paper, in view of the stretcher transshipment transport stretcher part of car design modeling and simulation analysis, according to the design requirements for design transfer stretcher and with the back, legs Angle adjusting mechanism. AnyBody software is used to the human body back, leg movement...

In order to improve parametric design process efficiency, design product is layer-by-layer decomposed into design unit according to the functional, and the design unit is looked as the carrier of knowledge and the object of parameter driving. In order to describe the product structure and integrate design...

A strapdown inertial navigation algorithm is proposed, which is suitable for the measurement of the parameters of missile in the ejection test with short movement time, small changes of velocity and position. The transformation relationship between the missile-boy coordinate frame and the navigation...

A novel special purpose equipment for inner hole plating of rectangular crystallizer copper tube in continuous casting machine was put forward. The design requirements and the main structure of the special purpose equipment were introduced. The principle and structures of the automatically centered mechanism...

The contraction-expansion flow is a benchmark problem for exploring the rheological behavior of polymer melts by numerical method. In this study, DCPP and S-MDCPP models were adopted to describe the rheological behavior of branched polymer. The discrete elastic-viscous stress split (DEVSS) , streamline-upwind...

Three kinds pit array on the surface of cylinder liner were prepared by using laser device, the diameter were 250 m, 350 m and 400 m respectively. Then, the textured surface was nitriding treated by using nitriding salt bath device. The friction coefficient of the piston ring and the three kinds of surface...

The metal particles flow law of the turbine forging process is very hard got to know, due to the complex shape and large deformation of this process. For this situation, a 3D finite element mold was build for this forging process with DEFORM-3D. The results shows that the metal particle flow law in three...

In substation temperature monitoring system. For general detection system, when the temperature has reached a dangerous temperature alarm will occur, but in this case the situation is very dangerous. Not only affect the power supply, is more likely to life and property losses,. So before reaching dangerous...

The normal operation of power equipment is directly related to the normal life of people in the relevant areas and the normal operation of the enterprise. Regardless of the quality factor of equipment, the most important factor affecting the normal operation of the equipment is the working temperature...

Mechatronics is a kind of composite technology, combining the mechanical technology , microelectronics technology and information technology . The mechanical and electrical integration technology is the inevitable trend of the development of machinery industry, and the development of mechatronics technology...

In order to realize the system`s fast update, a new kind of machine vision solution is designed. It uses video input port and Gige Vision IP , and connects between the system and the computer, which is realized by FPGA technology. The new design plan contains new Gige Visiong standard and the core of...

Due to the extensive use of power electronic devices and nonlinear loads, the resulting of distortion in power grid voltage and current waveform becomes more and more serious. There not only exist integer harmonics of larger containing rate, but also include non integer harmonics of abundant spectral...

Aiming at humanoid robot’s dual-arm collision avoidance motion planning, this paper firstly establishes kinematics model for humanoid robot and mathematic model for Workspace Target Areas (WTAs). Secondly, it has deduced inverse kinematics formula based on DLS-SVD method and proposed a bi-directional...

The saturated magnetization and coercive force of TP347H tube from SC units and is temperature oxidation have been measured by vibration specimen magnetometer. The oxidation has higher Ms and lower Hc compared with the base metal of TP347H. The basic difference of the oxidation and the stainless tube...

The outer surface of the continuous caster brass processing, for example, research and discussion process for the grinding of non-ferrous metal surfaces.

In this study, a catalyst was fabricated based on Pt nanoparticles on MoS2/graphene (MoS2/GN). The Pt-MoS2/GN was formed from graphite by modi ed Hummers and Offeman’s method, hydrothermal method and polyol synthesis method. The graphene oxide (GO) sheets were synthesized by modi ed Hummers and Offeman’s...

Gear box of the gear crack is the failure forms of gear transmission frequently. Wavelet neural network has the perfect theoretical system, clear the algorithm process, the powerful data identification and simulation function. As traditional gradient descending method of wavelet neural network is easy...

This paper mainly studies the crimping process of turbo actuator at passenger vehicle. Firstly design a series experiments with a method of orthogonal test, then study and analysis the crimping results both by single factor visual analysis and multi-factor orthogonal matrix analysis, finally it concludes...

The SbFeO3 was reduced to obtain the SbFe and Sb2Fe alloys, and the SbGeO3.5 was reduced to obtain the Sb-Ge metal composite powder. The simulation lithium ion battery was prepared by using the SbFe and Sb2Fe alloys or the Sb-Ge metal composite powder as anode material. The analysis of the XRD and the...

Fabric defect detection has been an active area of research since a long time and still a robust system is needed which can fulfill industrial requirements. A robust automatic fabric defect detection system (FDDS) would results in quality products and more revenues. Many different approaches and method...

The service life of hot-end components in gas turbine for gas-fired power plant is hard to detect and evaluate. The relationship between temperature characteristics of hot-end components and the power load is established using the basic theory of gas turbine power cycle. The operating mode of gas turbine...

The simulation of thickness control of different thickness galvanized steel sheet was researched in this paper the simulation method featured by making use of bilateral calculation model to research Gas-jet wiping pressure of air knife. Regularity of the effect of steel strip and baffle gap on the thickness...

In the robot soccer competition whether able to accurately predict the ball’s status direct impact on the completeness of the robot’s motion, also determining the result of the game. In this paper, we have using the Kalman Filter to optimize the status data collected by the system, eliminate the noises...

Hosted by the International Robot Alliance, the international water robot contest has held the 8th so far. There are big changes in rules in the synchronized swimming events of the URWPGSim2D simulation platform, the original rule changes from no restrictions by the performance content to rule with standard...

Machining accuracy verification is an important method in virtual manufacturing to determine if desired machining accuracy can be achieved before actual machining. A machining accuracy verification method is proposed in this paper. The design part model in STereo Lithography(STL) format is imported and...

In this paper, the dispersion stability of multi-walled carbon nanotubes in combination with different metal particles was investigated. The available time of dispersions of metal-coated carbon nanotubes prepared by water bath ultrasonic dispersion was obtained. The UV-vis spectrophotometer was then...

At present, by existing sensors, sub- N micro-force in micro-assembly is not able to be reliably measured. In this paper, using PVDF film as the sensitive element and using micro-force sensor based on PVDF as the research object are to establish the model of PVDF sensor and analyze the relationship between...

In this paper, heat characteristics, energy conversion efficiency and energy transmission distance of electric hot air de-icing device are researched. Thermal energy conversion formula of jet bushing of hot air device is obtained. Finite element analysis software is used to establish the computing model...

Considering the angle deviation of the molten pool images that is caused by the different position of multiple cameras in the process of the laser welding image acquisition, this paper put forward a kind of new image registration method based on quaternion and geometric moment, which expressed the molten...

In order to guarantee the quality, functionalities and characteristics of remanufactured products, the quality-detection is obligatory and important. A research on quality-detection for boom cylinder remanufactured products is accomplished in this paper. Remanufacturing technological requirements of...

In this paper, based on finite element (FE) software MSC.Marc, a two-dimensional nonlinear thermo-mechanical coupled model is established to investigate the hot shrink-fit process for the reactor coolant pump rotor-can. By using this model, the limited time and temperature evolution for hot shrink-fit...

With a growing trend of social aging, the issue of “empty-nest” elderly is increasingly serious and children are more eager to keep an eye on the living security of the elderly in real time. In light of the increasing demand on home security monitoring, the real-time performance of existing security...

The design process of product is a process that uses engineering connection knowledge to assemble each functional unit, and the essence of which is the application of assembly connection knowledge. In the development of assembly design system which based on the knowledge of engineering connection, the...

In this paper, the through-current experiments of various alloy materials in the analog ground fault state are carried out and the relevant force, heat, electric performance test and analysis have been accomplished too The part alloy materials which meet the requirements of the low resistance grounding...

Results are presented for the silicon carbide (SiC) vertical channel junction field effect transistor (VJFET) fabricated based on in-house SiC epitaxial wafer suitable for power devices. The Normally-off 1300V SiC VJFET device’s current density is 260 A/cm2 and current is 8 A at VG= 7 V and VD = 2 V,...

Airplane frame parts can form by the method of increasing the transition mould. The main purpose of the transitional surface design is to change the material flow state, and make the material flow is uniform. Mainly studied forming process to a typical frame sheet metal part, analyzed the forming characteristics,...

Concave and convex flanging is a relatively common form in sheet metal forming.However,since the sheet edge of flange parts is an unclosed free state.After curve flanging forming,there is a shape distortion phenomenon in parts. This shape distortion has a great impact on the quality of flange parts.In...

Laser arc sound signal hides welding status information. It is a great significance to control the B&K company and four channels input sound and vibration analyzer. Using wavelet base which is db4, combining different methods to decompose laser arc sound signal. These methods include hard threshold,...

Most of the aircraft skin parts are with small curvature and the most difficult problem is the controlling of springback. In this paper, the comparison for springback between high-pressure water jet forming and stamp forming is presented by using software ABAQUS. The springback of the high-pressure water...

In this paper, a nonlinear control method used to make two different chaotic systems achieve synchronization within finite time is designed based on the sliding mode variable structure control theory and the driving response control method. In this method, the reaching law of the sliding mode variable...

In this study, a measurement system is developed for obtaining continuous piston temperatures in working engine by using a voltage recorder. In this paper, authors discuss the sensor package impact of test results in temperature measurement, and measured the piston temperature when the CNG engine was...

A hydraulic directly operated reducing valve driven by Giant Magnetostrictive Actuator(GMA), which is used in a vehicle, is designed in this paper. The mathematical models of GMA and reducing valve are established. And then use of Matlab and AMESim analyzed the influence of theirs structure parameters...

In this paper, the design significance of plastic packing machine , the difference between the new and previous plastic packing machine and the advantages of the plastic packing machine is elaborated. The plastic packing machine is composed of the banknotes push and the bill alignment part, plastic film...

Al alloy anodized coating was prepared in boric-sulfuric acid with the addition of silica sol or not. The current and voltage transients of the anodizing process were collected by ZF-10B data collection instrument. The corrosion resistance was examined by neutral salt spray, electrochemical impedance...

High voltage and large current dynamic test for SiC diodes and hybrid module was studied. Then high voltage dynamic test for 1700V-25A 4H-SiC junction barrier schottky (JBS) diodes and high current dynamic test for a 1700V-200A half-brige SiC hybrid module were performed. With the change of test conditions,...

The hot deformation behavior of INCO718 alloy was investigated by hot compressive tests with Gleeble 3800 thermal simulator in the temperature range from 950 C to 1150 C and strain rate range from 0.1 s 1 to 10 s 1. In consideration of the temperature, the flow stress curves were corrected by one simple...

This paper is about the static error measuring strategy of five-axis CNC machine tool basing on the touch-trigger probe, which is the mainly measuring tool to detect the static error of the five-axis machine tool of RTTTR and RRTTT topological structure. According to kinematic chain of the five-axis...

The thermo-elastic contact characteristics of standard spur gears with the ANSYS software’s Indirect coupling analysis method and achieve the limit state function of contact strength of tooth surface with the response surface method. It also studies the probabilistic sensitivity of the limit state function...

The traditional reliability models of CNC machine tools are based on the assumption that the machine after repair is as-good-as-new or as-bad-as-new. But it is not the precise model compared with the Engineering practice. This article focuses on the repair degree to the sub-system of CNC machine tools,...

Hydraulic Component Design hydraulic components design library offered by AMESim was used to simulate the internal structure and working principle of direct operated relief valve. The influence of spring stiffness, spring pre-tightening force, spool weight and damping hole diameter on direct operated...

Rolling force model was developed in which the contact arc surface was adopted as slipping and stagnant friction. The positions of neutral plane, forward and backward slipping zone, and stagnant zone were computed with improved genetic algorithm. Rolling forces of hot strip were simulated, which agreed...

In the actual process of production, there is a practical situation that multi-level relevance resources such as operators, machines, fixtures and cutters participate in the job-shop operation. Different from traditional production scheduling which focuses on machines, this scheduling problem add constraints...

By taking the gear box of a ship lock’s hoisting machine as the research object, because of the vibration signal of a fault gate has the characteristics of both randomness and non-stationary, the chaos oscillator detection theory is introduced into the diagnosis for gear fault. Research the dynamic behavior...

With the rapid development of smart grid, the using of smart appliances, the new information system and the application of digital work gradually get into the smart grid companies. It provides a digital basis for the big data technology to enhance smart grid’s service capabilities, which is the inevitable...

The application of domain specific modeling language (DSML) in the decision behavior modeling of the air-combat simulation brings higher level of abstraction and friendly environment. However, the decision behavior model must be translated to executed code before it be used in air-combat simulation system....

In this paper, the solidification structure of hypoeutectic grey iron under different vacuum conditions in lost foam casting (LFC) were discussed. In order to better research solidification structure under different cooling conditions, we designed different thickness step test casting and took actual...

In this article, an orthogonal collocation method for the initial-boundary value problem for sobolev equations is given. Optimal order estimates are obtained for the approximation of the method.

The ductile fracture criterion (DFC) is widely used to predict the forming limit of sheet metal, and the material constants in the criterion need to be determined by the destructive tests. In order to increase the DFC predication accuracy, the key factor is improving the quality of material constants...

Different temperature and time parameters were adopted in the stress relieving annealing processes of 5B70 and 5A06 aluminum alloys. Then, the mechanical properties and the variation regularity of residual stress of 5B70 and 5A06 aluminum alloys before and after stress relieving annealing were studied....

In order to predict incremental spacing in press bend forming of Aluminum alloy integral panel the typical integral panel test piece was taken as an example. By using numerical simulation method this paper analyzed the effects of different incremental spacing on integral panel forming quality which included...

CFRP laminates are used for various aircraft structural components because of their good mechanical and physical properties. Metallic inserts are one kind of aerospace fasteners, which are usually installed in the metallic components by an interference fit. However, when metallic inserts are installed...

Car retarder is an auxiliary braking device. It is very important to improve the driving safety of the automobile. At present, the domestic and foreign research car retarder is mainly based on eddy current, permanent magnet type and hydraulic. Although the traditional retarder can play the auxiliary...

In order to solve the problem of mechanical professional courses classroom boring, designed a new interest linkage mechanical mechanism demonstration teaching aid. The teaching aid comprises five sets of mechanical mechanism, respectively, gear mechanism, Geneva mechanism, slider crank mechanism, an...

Laser induced forming is a kind of dieless forming technology, which is caused by the uneven internal thermal stress caused by local transient heating. In this paper, the characteristics of the laser flexible thermal forming technology are introduced, and the application prospect of the laser induced...

This paper mainly discussed how to generate three-phase sine wave by ATmega128A single chip microcomputer. The paper describes the principle of sine pulse width modulation and pulse width algorithm of SPWM wave in detail, briefly introduces the structure and the function of ATmega128A microcontroller,...

By the analysis of the knowledge constitution in the field of valve product design, combined with the CAD system based on knowledge , the knowledge support model is constructed, in which the knowledge support mechanism facing product design process is discussed, the knowledge support mode of each design...

To solve optimization of aircraft vertical tail stealth design under airborne PD radar, the Kriging model based on agent tail stealth characteristics is proposed; Genetic algorithm is applied to optimization calculation based on the tail stealth agent model as objective function and the tail capacity...

Method of Moment is used to calculate vertical tail’s radar cross section(RCS). The impact of leading-edge sweep angle, span and inclination on vertical tail’s RCS is analyzed and then vertical tail’s RCS curves and function expressions with leading-edge sweep angle,span and inclination are fitted by...

Conformal mapping is an important issue of complex function theory. In this paper, a new method for numerical conformal mapping of doubly-connected domain is considered. This method calculates the constraint equations of numerical conformal mapping based on charge simulation method of doubly-connected...

The HA composite coating with different TiO2 contents was prepared by electrophoretic deposition in this study. The composite coatings were characterized by scanning electron microscopy (SEM), Ca/P atomic ratio in composite coatings was analyzed by Energy Dispersive Spectrometer (EDS), and the adhesion...

According to requirements of automatic system, this paper designs a transmission and control system for industrial workpiece. In the system, the control part is based on the touch screen module and the programmable controller; the implement part consists of pneumatic solenoid valve-cylinder pneumatic-drive...

When paint-spraying a batch of small size parts in an assembly line, for some parts with different weights, the speed of sparger device transmission conveyor should keep unchanged in order to ensure the paint-spraying quality and effect. Through analysis and comparison to the structure of throttling...

The body is surrounded by the surface. These surfaces include parallel plane, vertical plane, oblique plane.The projection feature of Vertical planeis "a slash, two similar shape", the looking and drawing of the similar shape is difficult to understand and easy to make mistakes. This article analyzes...

The term of design robot (D-Robot) refers to a finite state computing entity that changes the state of the object through a set of variable programmed actions for the performance of a variety of tasks that need both action-level mental activities of human designers and iterative operational activities....

Basic copper carbonate [Cu2(OH)2CO3]with sphere-like morphology had been prepared via a direct precipitation route by controlled reaction conditions. Crude materials were cupric chloride solution and sodium carbonate solution. The factors like reaction temperature and reaction pH were studied. Scanning...

The airborne pod system can reduce the difficulty of power line inspection and enhance the degree of automation for inspection tasks. At the same time it also has a higher requirement of the structure performance of the airborne pod system. Therefore the finite element statics analysis and modal analysis...

Focused on the present situation of the rivers and lakes’ water quality monitoring in China, the monitoring way is single and undeveloped, and water quality evaluation is difficult. A portable rivers and lakes’ water quality online monitoring instrument is developed, which can achieve the real-time remote...

Polyurethane hydrogel(PUHG), which exhibits pH, temperature and ionic intensity sensitive, was synthesized by using the toluene diisocyanate(TDI), polyethylene glycol(PEG-6000), dimet hylol propionic acid(DMPA) and triethylene tetramine(TEFA).The effect of pH, temperature, ionic intensity and crosslinking...

As an information collection and automatic identification technology, barcode can be used to collect information accurately and quickly. So the barcode technology is introduced into the whole cycle of aircraft manufacturing. This paper puts forward the oriented method of the aircraft development cycle...

Some new heterogeneous catalysts used to synthesize the tributyl citrate (TBC) and aspirin were prepared and characterized by brunauer-emmett-teller (BET), field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD). The effect of temperature, catalyst loading and the concentration...

Solar energy is one of the most important renewable energy, and it will not cause pollution and damage to the environment, using PV solar energy collection devices to generate electricity for the ship will be expected. When PV module supports are installed on the ship's deck, the wind and wave loads...

The expanded F-expansion method was used to construct the evolution wave solutions involving parameters for the Complex Ginzburg–Landau equation. The evolution wave solution in several forms are shown and the numerical simulation figures are given.

This paper introduces self-adaptive fuzzy PID controller to improve static and dynamic performance of magnetic suspension systems aiming at the characteristics of nonlinearity, hysteresis and uncertain model of the systems. The simulation results demonstrate that this fuzzy self-adaptive PID controller...

Based on CAT (hydraulic computer aided test technology), by use of multiple sensors gathering experimental signals, the testing platform develops performance testing work to axial piston pump on the hydraulic controlling platform. Based on digital computer and LabVIEW graphic development platform from...

This paper introduces an GPS(Global Position Systems)location method based on articicial neural networks. Because the signal of GPS receiver is usually influenced surrounding environment, is difficult to obtain continuous and exact location data. A method based on Artificial Neural Network (ANN) is used...

In general, an image of woven fabric sample can be regarded as a typical textured image. The detection of local fabric defects is one of the most captivating problems in computer vision and has received much attention over the years. In the textile industry, careful inspections for woven fabrics have...

Before fluorescence detection of Titanium alloy components, acid pickling in HF-HNO3 solutions is always required in order to remove the superficial oxides of the components. According to the relative CPS document, the conditions for Titanium alloy pickling are HF arranged below 90g/L, HNO3 300-450g/L...