At present, the products design and development of enterprises are facing more complex internal and external environment, the specific performances are the technological and economic changes, the endless innovation of competitor, the constant changing of consumer's demands. To the enterprise management,...

As the development of science and technology, the microchip technology has become closer relationship to our life which gives our life more convenient, not only the telephone but computers and digital cameras can’t work without the microchip’s development. “Arduino”, it’s cheap and easy to develop but...

The simulation of free surface problems (e.g. waves, bubbles) are important in various fields. Arbitrary Lagrangian-Eulerian (ALE) is one the famous methods to track the position of free surface. However, this method is usually used in Finite Element Method (FEM) systems. The main difficulty to integrate...

This paper presents an integrate circuits IP for extracting Haar-like features in the image of front vehicle. We improve the performance of the IP by selecting the architecture of integral image, pipeline, ping-pong operations, data multiplexing etc. The verification of the IP is based on the VCS, and...

This paper had developed C100 high-performance concrete (HPC). Mechanical properties of high-performance concrete after evaluated temperatures were investigated. Besides, this paper had summarized the extrinsic characteristics of HPC after evaluated temperatures, which was effectively applied in evaluating...

In order to solve the problem of aluminum piston deburring, in the special deburring machine adopts the drum wheel unit as a clamp, slot wheel mechanism as intermittent mechanism, by the brush to remove burrs, through the literature material law, expert interview method, calculation analysis and other...

The elasticity is a very special factor considered in modeling of supersonic aircraft, and it is usually neglected in supersonic aircraft. Since it will cause the force and moment of the aircraft totally different, so it increased the complexity and difficulty of hypersonic aircraft. To simplify the...

Based on a kind of pitch channel model of supersonic aircraft which is released by America air force research center, a kind of open loop testing method is proposed to testify the actuator effect of a kind of high speed aircraft. The difference between this type of aircraft and other traditional aircraft...

A kind of virtual flying condition is assumed that the trust and resistance is the same that can keep the force balance during the flying process of high speed aircraft. The main function of this virtual assumption is that it can the unstable open loop aircraft fly a longer time so more date can be gotten...

The open loop response of lift wing is researched based on a kind of high speed vehicle model which is released by America air force research center. Since the speed of aircraft is too high, so its open loop response is unstable, which is difficult to do open loop actuator analysis with traditional method....

This paper analyzes the theory of support vector machines-SVM and discusses the algorithms of SVM classification and regression. After overviewed the SVM application research on machinery fault diagnosis and prediction recently, it discusses the ,erits and deficiencies of SVM and the points out the bright...

Due to favorable sound isolation to the impact sound transmission, People are prone to adopt floating floor as insulation structure. Of the researches on impact sound insulation through a floating floor, the theoretical study is much less than the experiment analysis. For the purpose to determine sound...

Previous efforts on die swell issues mainly focus on linear models such as Oldroyd-B, Linear PTT. However, the characteristic of Rouse Linear Entangled Polymers (Rolie-Poly) model, as a simple model derived from tube-based molecular theory, is rarely discussed before. Compared with other constitutive...

Since the source of the waste after the concrete complex, the waste concrete made from recycled coarse aggregate processing and many use restrictions, the recycled concrete technology and water treatment technology integration into a concrete drainage concrete, through experimental analysis of the recycled...

With the increasing demand for large-tonnage cranes in nuclear power and other industries, the research for cranes superlift is increasingly urgent. Taking 3500t crawler crane for instance, a new kind of hydraulic drive linkage system superlift mechanism is designed and a new design method for size parameters...

Empathetic design is considered as a user-centered design approach that pays attention to the user's feelings toward a product [1][2]. But the design process and design factors are not clearly. This paper analyzed the customer needs, emotion and empathy in psychology, restudied the definition and design...

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,...

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...

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....

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...

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...

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...

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...

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...

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...

Made the modal analysis of BTA drill pipe by ANSYS software,analysis the modal of the BTA drill pipe when encountered the excitation frequency in the actual processing.Determine the appropriate drill pipe vibrations at different excitation force, to further optimize the design of the drill, provide the...

Precast concrete shear walls are capable of providing preferable lateral strength and stiffness under earthquake loading and thus they are frequently employed in the moderate and high seismic risk regions. Guided by the building industrialization advocated by the government of China, domestic scientific...

In this paper, we focus on the need for temperature field analysis of gear transmission, as a important issue related to gear transmission’s reliability. Most of previous studies were based on traditional heat transfer theory, focusing on numerical analysis method, however oil cooling effect has not...

In order to reveal the machining mechanism of the inter electrode gap during ultrasonic assisted electrical discharge machining, the relationship between the distribution of the flow field and bubble motion was studied. The three-dimensional model of deep hole machining was established firstly using...

Micro holes were formed on GH4169 super alloy using a millisecond pulse Nd:YAG laser with a average power of 65J and positive defocus of 3mm from the sample surface. The microstructure of the micro hole including morphology and elements composition were analyzed using Scanning Electron microscopy (SEM),...

This paper focuses on the mode-coupling characteristics of gyroscope, and tries to rebuild a more perfect system model of silicon micro-machined gyroscope. It analyses the factors causing the coupling motions between drive-mode and detect-mode of gyroscope system. The mathematical model is deducted out...

In the twenty-first century, the life science has been studied from the genome research into the structure and function of the structure, which can further reveal the mystery of life. In this paper, it takes the relationship between protein structure and its function as the breakthrough point, with the...