The nonlinear torsion vibration of the three wire pendulum has been studied in this paper. The differential equation of movement of suspension disc has been obtained by theoretical analysis. The vibration curve and phase diagram have been gained by solving the differential equation numerically. It is...

Micro tool manufacturing technology is the key for guaranteeing the manufacturing accuracy of micro milling cutter. According to the relative motion relationship and the meshing condition between the grinding wheel and the workpiece, the changes of normal vector of the intersection point for the grinding...

The study introduces a new method of microporous boring machining process for high-precision.First,it is difficult to get better surface quality of microporous with micro cutting technology.Second,using again boring processing methods and the reasonable process parameters can improve greatly the quality...

This paper proposes a model named Independent Component Analysis with Reference Curve (ICARC) to extract and remove artifact signal from Electroencephalogram (EEG). Firstly, an additional requirement and a priori information are introduced directly into the contrast function of the traditional ICA model....

In this paper, the current situation of research on Internet of things technology to carry on the analysis, the RFID technology, sensor network and detection technology, intelligent technology, nanotechnology, address of the IPv6 technology are summarized, analysis of existing problems in the development...

With the wide application of cloud computing and mobile technology, there has been a Innovative modes of learning, m-learning.Based on the analysis of status quo of mobile learning And cloud computing support based on mobile learning, set up a mobile learning platform, cloud computing,Mobile learning...

Designed one kind to support the type capture organization in view of non-cooperation goal satellite in, the use capture organization locking goal satellite to the docking ring, could realize smoothly to the goal satellite fast capture, and reduced time the capture organization and the goal satellite...

The seat design is based on the functional conversion of the characteristics of people's working as well as the requirement of leisure, which can present a new human-computer interaction in a novel structure form. In this paper, by analyzing the physiological characteristics of human body's posture,...

Since the policy of reform and opening up, China's economic has take-off rapidly. All walks of life has been flourishing, where the automotive industry was particularly notable. Car has changed from luxury goods to a necessity of life. Automotive industry chain is very long, involving a variety of industries,...

This paper study’s the influence of vortex generator on the breakpoint of delta wings detached vortex. Experimental research on the interaction between vortex generator created auxiliary vortex and delta wing's detached vortex is conducted under different flow speed and attack angles. Flow visualization...

CNC grinding machine tools is the parent machine in modern machinery manufacturing, our country’s machine tools is a certain gap with foreign countries, therefore, it is very urgent to improve the reliability of CNC grinding machine. This article is mainly based on data collected in the factory, using...

The elevator has being went into people's life for 158 years. With the development of the society, High-rise buildings appear constantly, the use of the elevator is more frequent. Although the elevator safety devices is relatively complete, but there is no any safety measures within the car. So, once...

The planar 3-RRR compliant mechanism is a piezoelectric (PZT) actuator driven 3DOF parallel micro-motion device. It is widely used in micro-electromechanical systems, biotechnology engineering and aerospace. However, crack easily occurs on flexure hinge because alternate loading over a long period of...

Elliptical front crack has been found to be more accurate and realistic for modeling the surface crack. The stiffness of an elliptical cracked rotor submitted to bending are derived and solved based on fracture mechanics method and multi-parameter fitting technique. “Breathing effect” occurs due to gravity...

The 7-DOF humanoid robotic arm joint coordinate systems are established and link parameters are determined by D-H method, and the robotic arm kinematics model is established. The position and orientation of robotic arm end-effector is generated by homogeneous transform method. Monte Carlo method is proposed...

Many factors of sintering process related to LTCC (Low Temperature Co-Fired Ceramic) substrate warpage defects. In this paper, the relationship between LTCC sintering process parameters and the substrate warpage defects were studied through the hot - structure coupling finite element simulation method....

In this paper, the temperature, time and pressure of the three process parameters were selected as three control factors of the low temperature co fired ceramic (LTCC) substrate laminating process. By using an L9 (33) orthogonal array which have 9 different process parameters' levels combinations were...

A numerical simulation analysis model of the Metal/LTCC (Low Temperature Co-fired Ceramic) substrate vacuum eutectic soldering was built, through the study for the vacuum eutectic soldering process. Then making a thermal-structure coupling analysis for this model to research the residual stress distribution,...

This paper summarizes the working principle of laser particle size analyzer, and some experimental study can be made to monitor the number and size of abrasive particle in the oil of lubricant by the laser particle size analysis method. It obtains the particle size distribution of lubricant’s abrasive...

For the 3D model reconstruction of centrifugal pump inducer based on reverse engineering, the hub and the blade of centrifugal pump inducer are reconstructed respectively according to their structures. This paper firstly introduces the laser scanning method by which the rotary-future based model reconstruction...

Edge rolling is a vital method for width control in rolling. The plastic deformation doesn't go deep into center of the slab, since the high ratio of width to thickness, and only occurs in the edge. Cosine dog-bone model is applied to describe dog-bone shape and used to establish a knematically admissible...

This paper analyzed the structure and mechanical load of the main girder of hoisting machinery, taking the construction hoisting machinery as the breakthrough point, establish finite element model of main girder by ANSYS, analyze the structure natural frequency and strength of the main girder. Then an...

We built the square structure model of two-dimensional turbulence experiments, using of PIV measured velocity field and the vortices field of the two-dimensional turbulent and analyzed to obtain an energy spectrum, you can clearly see the double-scaling law characteristic in the energy spectrum, and...

According to the national standard Minimum allowable values of energy efficiency and energy efficiency grades of commercial refrigerating appliances—Part 1: Refrigerated display cabinets with remote condensing unit and GB/T21001-2007 Refrigerated Display Cabinets, this paper illustrates the design of...

For the cogeneration steam turbine, due to the thermoelectric load changes frequently, which will cause the back pressure instability, and cause sharp fluctuations in temperature and pressure inside the turbine, these fluctuations will affect the normal work of the turbine rotor, even some mechanical...

Parameters optimization research of bow-shape seat structure is done through SolidWorks and ANSYS Workbench build collaborative simulation platform, which is an important part of segmented tire mould. The optimal values of bow-shape seat belt, outer surface length and inner diameter of bottom surface...

In view of the problem of the Electric vehicle, which is in difficulty and reusability in the development with the permanent magnet motor (PMSM) ECU control system, this paper presented a ECU motor control system development method based on automotive open system architecture (AUTOSAR). It mainly to...

A multi-function ball screw measuring device is developed, which can achieve most of the parameter testing of ball screw like geometric accuracy, positional accuracy, reverse clearance, speed and acceleration, friction torque, preload, fatigue properties, temperature rise and so on. According to the...

The dynamic characteristic parameters of ball screw includes positioning accuracy, repeat positioning accuracy, speed and acceleration, friction torque, preload, fatigue properties, temperature rise and so on. In this paper, a new multi-function ball screw measuring device is developed. The majority...

According to the existence problems of study on the mechanism of contact stiffness of bolted assembly structure formed by tightening sequence, a TK model of single bolt structure is established; then the frequency characteristics of combined surface under different TS was analyzed by using ANSYS; the...

Adopting SIMPLE algorithm, k- -Ap turbulence model and tetrahedron non-structure grid simulates the flow field of sewerage pump in the Descartes reference frame. Through numerical simulation, flow characteristics and distribution rule of sold particles in sewerage pump are obtained, which supply can...

For the demand of the tower crane with efficient and safe operation, the wireless monitoring management system of a tower crane is designed based on MCP2515/CAN bus in this paper. In order to monitor the operation state information of the tower crane real-time, the system monitor front-end is designed...

Based on the space vector pulse width modulation algorithm analysis and research of the digital signal processor generates SVPWM waveform implementation and software algorithms. With the methods used in practice, a digital control three-phase inverter power based on DSP is developed. Relevant test parameters...

A new type unmanned surface vehicle (USV) concept is proposed in this paper. Then, the intelligent autonomous vehicle model is designed and fabricated. Self-propelled model test of the new type USV is carried out, which is mainly turning test. According to the turning diameters in various speed and rudder...

The existing processing methods of machining parts with an array of micro-cylinders (The small mold punch and spinneret micro-porous electrode) is circumferential milling which has the following three major problems (1) longer cutting tool path, (2)difficulty of accuracy guarantee, (3) complex processing....

Adaptable-function mechanical products generally demonstrate various degrees of similarity in their behavioral process for different adaptable functions. Analysis and research of this similarity constitutes an important aspect of research for the design of such products. The paper investigates the behavioral...

This paper builds a three-dimensional solid model by Solidworks for study of a large belt conveyor drive roller. The quality of the roller optimized by the zero order algorithm and the optimization target is minimizing quality. Modal analysis of the conveyor roller is carried out in two different cases...

A new method is proposed to analyze the bearing properties of the preloaded oil pad in different compensation method when the hydrostatic turntable tilts. Energy equation and Reynolds equation are coupled and solved in this paper. Results show that the bearing properties of the preloaded oil pad will...

Accurate modeling of spiral bevel gear laid the foundation of the key technology namely Tooth Contact Analysis TCA and correction of the deviation of tooth-surface in its digitized manufacturing. It summarized the related outcomes and divided modeling approaches of the tooth-surface of spiral bevel gear...

The overall structure and the weak zone of a new circular composite fragile cover have been presented. In fabrication of the fragile cover, a particular hand lay-up molding process is proposed. The deflection and failure pressure of the circular composite fragile cover have been experimentally investigated....

The super-high pressure common rail system was designed innovatively for improving the fuel atomization characteristic of high power diesel engine. The three-dimension combustion model of super-high pressure common rail system was constructed on the AVL Fire software platform. The numerical simulation...

Firstly, we created the 3D model of crankshaft used HT-A150 engine in the tractor. Secondly, we cumulated the loads of the crankshaft when it was working at the most dangerous state. At last we conducted stress and strain simulations about the crankshaft manufactured by two sorts of materials by analysis...

The anchor is the core component of vessel mooring system, of which an accurate and efficient control mechanism plays important roles in ensuring the optimal operation conditions. For the limit in reliability and automation, traditional relay logic control is gradually unable to meet the requirement...

In order to determine the parameters of mixing experiment with jet-mixing apparatus, 3 outlet diameters of jet-nozzle d and 5 area ratios m were selected to import the computer based on Computational Fluid Dynamics ( CFD ) to simulate the real mixing experiment. The results show that, in the real experiment...

electrostatic spray relatives to non-electrostatic spray has the outstanding advantage in deposite distribution and canopy penetration aspects, which enables droplet moves to the back side of the blade to form the "surround effect." In order to study the impact of distance that nozzle away from the blade...

The fatigue strength problem of multi-deck ship is serious. When in the same external load and nominal stress level, structural fatigue life of the details are closely related to the specific structural forms. Therefore, optimizing the structure of the details could reduce the stress concentration factor...

Currently, water isolated slurry pump has been widely used in non-ferrous metal mines, which to replace the low-lift pump as a new water isolated slurry pump. The water isolated slurry pump consists of high pressure water pump, isolation devices, check valves, water valves, control systems, auxiliary...

This paper studies on optimization design of monorail brake spring, through establishing the mathematical model for optimization design of spring, MATLAB optimization toolbox is used to optimization calculation with examples, to obtain the optimum design parameters. Using optimization design method and...

The advancement of digital technology is offering more and more possibility for the presenting of packaging designs. The maturing internet technology has managed to provide technical support for remote interactive experiences. Digital modeling and interactive virtual presentation of packaging products...

With the development of embedded devices and in-depth research and extensive application of networking technology, smart objects and types, increasing the number of networking devices continue to be popular in the people's daily lives. Development of digital and network technologies enables the controller...

Image processing and recognition is carried out on the actual image transformation and transformation so as to achieve the aim of identification. Because of the characteristic of the image information is that it is a two-dimensional space, so the amount of information it contains is very large. Neural...

With the development of industrial control technology, the drawbacks of traditional PLC gradually emerged. Although most of the PLC manufacturers have similar programming language, the PLC hardware and software products are not compatible. Also, their configuration, addressing and grammatical structure...

Recently, with the complete propulsion of digital development zone construction, the information-based instruments and city informatization level in the city have been improved gradually and obviously. Especially, the successful implementation of engineering project like the basic information resources...

With IT and network technology becoming more and more mature, the application of database technology is deeper, university library data storage and management also significantly increase during this process, how to expand the space and scope of university library services so that readers can access information...

The rapid development of business activities to accelerate the development of logistics industry. As the global economy and the advancement of electronic business logistics costs in the proportion of the whole cost is more and more big, the effectiveness of the logistics problems have become more and...

The collection of target-radiated noise for passive sonar can be effected by broadband strong jammers, the detection range and accuracy will be reduced as a result of the appearance of jammer suppression area. In this paper, with the help of sonar equation and the theories of broadband array signal processing,...

To solve the problem of weak discriminability of the feature vector for underwater acoustic classification, a method of feature differentiation optimization based on PCA and MDA analysis was proposed in this paper. It can enhance the differentiation by optimal mapping the feature vectors to transform...

This article proposes a method to solve route plan problem of unmanned underwater vehicle (UUV) using particle swarm optimization (PSO). Firstly, traditional electronic nautical map is preprocessed to decrease calculated amount in computation of route cost and improve plan instantaneity using technique...

An acoustic feature change detecting based method is proposed in the paper to estimate the target maneuver onset time. Form the statistical analysis of many acoustic features of different targets, the distribution of a certain estimated feature value in a single motion state is approximately normal....

A target simulator based on ADSP-TS201 was designed and implemented for researching and testing torpedo homing system. A multi-DSP parallel processing system was used as the hardware platform to generate element signals in real-time, and then the signals were provided for the torpedo homing system. In...

This paper presents that the reflection signal from a submarine can be seen as the sum of a few strong highlights and a large of weak random highlights background. Using interpolation method can create every hydrophone’s signal in a plot array from a single hydrophone’s output. At last the time domain...

This paper meets the needs of underwater information warfare under development trends of knowledge centre war, starts from the concept of information understanding, combines with the characteristics of underwater information, deeply describes the underwater information understanding technology, lays...

In the paper, we considered the problem to model the text document for knowledge discovery. It is urgent problem to find valuable information knowledge in the mass text documents. Data mining based on eigenvector is widely used to mine association between information of mass documents as much as possible...

This paper presents a long-distance underwater acoustic communication remote control method in which airgun is used as the source. This method expands the range of underwater remote and supports underwater robots to work together. The pulse signal (produced by airgun) source level, frequency and consistency...

In this paper, we studied the time-frequency domain characters of divers in lake trail and proposed some experimental results. The diver we invited in the trail was equipped with open-circuit SCUBA. We recorded the breathing sound of the diver in different motion state and analyzed its characters both...

With the development of networking technology, targeting and tracking technology has been improved and enhanced. Difficult to capture the movement of the target, which brings great difficulty to locate and track algorithm exists for the current low efficiency, high energy consumption and other issues,...

Object extracting and optical measurement of the image is researched by using the Photoshop channel module as the operating platform, and a simple and practical processing method of optical measurement image was proposed. Hereby, the optical measurement image process and the relationship between channels...

The effects of the model and weight function on outlier detection are evaluated by the simulated optical and radar observations. The iterative reweighted M-estimation based on different iterative reweighted functions is used for the outlier detection test. Three typical models of the optical and radar...

Random variable of thermo-mechanical coupling (TMC) structure is analyzed first, then the topology optimization model of TMC compliant mechanism is established. According to the uncertainty factors such as temperature, load, volume ratio and thermal expansion coefficient in the process of topology optimization,...

Intercept sorting is by targets recognition and the threat judgment, targets is determined as the intercept object, which not only reflects the target threat degree, but also reflects the degree of emergency for interception target, target interception order can provide a basis for objective optimization,...

By analyzing the main factors of target threat degree, combined with existing interception sorting criteria, firstly considering the dynamic target case. Secondly, take the total loss as the objective function, establishs a decision-making model to intercept targets under higher specified targets without...

In the practical application, the SINS/GPS tightly integrated navigation system is faced with the situation that state error model is inaccurate or noise statistical characteristics are inconsistent with the reality. However, traditional Extended Kalman Filter (EKF) method can not effectively solve it,...

Face classification method and line classification method are employed in manufacturing process classification, which is carried out based on investigation on interchangeable manufacturing processes. A classification draft of standards to manufacturing processes’ classification is proposed, which lays...

The classification of case jig is firstly studied in view of kinematics and mechanism in this paper. The parametrical design of part and their assembly of automobile welding jigs is dealt with. And then the case base of automobile welding jig is constructed, where Group Technology (GT) is applied to...

Short steel fiber composite tire tread rubber can greatly combine rigidity of short steel fiber with flexibility of tire tread rubber, which can considerably improve performance of tire. Tire tread used in heavy load vehicles or engineering vehicles has problems of easily cracking, chunking, chipping,...

Surgeons are trying to achieve higher qualities in minimally invasive operation. With the growth of modern technology, intelligent medical equipments are used to improve operation safety. Milling through the bone tissue wall is a common abnormal milling state in ear surgery, which will do harm to the...

Switching power supply is on the basis of the development of modern electronic science and technology, using the power switch tube, by controlling the switching time (duty cycle) to make the output voltage stability of the high frequency power supply, it includes two parts of the main circuit and PWM...

With the rapid development of PLC and its widely used in the field of industrial, life, etc., is bound to bring high performance requirements of PLC. Reliability for measure of PLC performance indicators, and PLC application in most occasions must meet the requirements. How to improve the reliability...

Along with the successful application of office automation technology in the public security system, the traditional office mode gradually is digital, networked replaced by way of the modern office. Through the analysis of the content and format of legal documents, we can find the rule of legal documents,...

A capacity analysis of route sink networks based on time-sharing transmission protocol is proposed to solve the problem. Firstly, the effects of energy constraints on the capacity of wireless ad hoc networks are studied. The network has route sink function, and the node transmission process is based...

With the development of codec technology and wireless broadband access system of the opening, use them as a hosted network, for low bit rate wireless video monitoring system is more and more get the attention of people. Based on CDMA network of the Internet are introduced in detail based on CDMA wireless...

The students' dormitory is the main place to college students' daily life, so the students' dormitory management is an important part of school management. As the growth of the school recruitment of students scale, the growing number of students, make the student dormitory management faced with multiple,...

This paper presents an approach to a novel and efficient diagnostic system for PLC controlled manufacturing systems. A general structure of the diagnostic system is implemented, which is the extension of an existing diagnostic system we have developed in recent years. We artificially get the diagnostic...

The computational thinking is the current international computer widely attention an important concept, is also the current computer education need to key research important topic. Computer industry at home and abroad in the field of philosophy and social science and the general scholars on this subject...

Along with the speeding up of the international network, the wide application of Internet, make people's learning and profound changes have taken place in the way of life, but the Internet information security management issues are also increasingly prominent, along with the network transmission of all...

With the development of world economy and the business model and change, this concept is applied to the reality of enterprise e-commerce transactions, through the network communication technology, achieve the e-commerce mode of the enterprise, the enterprise's economic business has an important value,...

With the widely application of the computer system and the continuous development of information technology, the rapid increase of data quantity also in these data has become an indispensable factor in our work and life; To transfer the data resources, processing, analysis, processing, thus constituted...

Network realized the information sharing, including individuals, businesses and the government and the whole society. With the expanding of network application scope, for all kinds of network attack and destruction is growing. Computer network security is an international problem, worldwide each year...

With the rapid development of machine learning and Internet technology, the combination of the two methods is well appreciated recently. An anomaly and intrusion detection system is a mechanism that monitors network or system activities for malicious activities. Intrusion detection and prevention systems...

Network attack in a wide range of complex and require monitoring system can real-time detection under high-speed network traffic found various security events. Data stream management system is a kind of high speed and large flow data stream of the real-time response to query requests database model....

Camera calibration is the necessary step of a computer vision system. The Tsai two-stage technique is used to calibrate the badminton Hawkeye system in this paper. The internal and the external parameters and the transformation relation of the two cameras are obtained after calibrated, which lay the...

With the era coming of digitization and informatization, it is necessary to modernize Chinese folk cultures which show distinct ethnic features, such as Re-gong Tangka. Therefore, the establishing of framework, based on the internet, of integrated digitization in intangible cultural heritage is demanded....

Big data analysis and Internet financial are currently the most fiery words. The perfect use of big data and Internet in the financial industry will undoubtedly bring a huge change to the entire financial industry. But the opportunities and risks of Internet financial are coexist, whose risk is greater...

In the recent three years, Wechat quickly developed into the most popular social networking platform. The topology structure of Wechat is analyzed through description of the basic data of the Wechat network and complex network analysis method. When building social networks Tencent Wechat, we get statistical...

The development of the network and the application of information technology makes the enterprise to establish the enterprise information system, when the information system is applied to the finance department, the accounting information system can develop and implement the business integration enterprise...

With the rise of modern industry and the rapid development of PLC, the requirement of industrial workers shift from high to high technology, gap technology talents, so that the vocational school talent training should pay attention to professional, technical and practical. As a condition of talents cultivation...

Along with the development of high frequency switching power supply technology, people on the electromagnetic compatibility, noise pollution more and more seriously, the anti EMI technology has become a new technology and new industry, solves the problems of electromagnetic compatibility of electronic...

In this paper, we finalize the research on the applications of wireless techniques for electrical monitoring and control systems. Monitoring system plays an important role in our daily life. Load frequency control method is widely used in the network can be complex, distributed generation in a large...

With the improvement of living standard, people more and more high to the requirement of food, the food safety problems emerge in endlessly, aroused the concern of the people for food safety and urgently need to establish a set of risk evaluation system, scientific and reasonable food for export food...

The mechanical equipment especially large key equipment reliability, availability, maintainability, and safety is related to enterprise's production efficiency and people's life and property security, wireless sensor network (WSN) is used to build the mechanical vibration monitoring system can make up...