bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling Present Worth of Product Quality Loss of STB Characteristic Based on Service Life Distribution
Authors: Zhao Yan Ming , Liu De Shun , Wen Ze Jun , Liu Ting
Published: September 2013

The product smaller-the-better (STB) quality characteristics are continually changing and out of specification limits because of the constant stress, wear and others after the product is put into use, which will cause loss because of the product rejected and scrapped. On the basis of the quality viewpoint that product quality loss is present worth of a loss caused as a result of its quality characteristics because its quality characteristic is out of specification and lead to product scrap after the product is put into service, the paper establishes the present worth model of quality loss of STB characteristic based on service life distribution, and proposes the calculation method on the probability density function (PDF) of the product service life based on the technical specifications of STB quality characteristic. It takes the concentricity between the inner cylindrical surface and the outer cylindrical surface of the link bushing as an example to analysis the various factors that impact on the present worth of concentricity quality loss in the new model, and contrast with Taguchi quality loss model. The results show that the new model describes an actual loss that a product imparts to society after the product is put into service, and can reflect the quality loss of STB characteristic in the product service process, and is more realistic than Taguchi quality loss model of STB. The new model extends tolerance design of STB characteristic from the manufacturing stage to the service stage.
Research on Multiple Environment over Stress Testing
Authors: Cui Yu Lian , Zhang Shi Xin , He Cheng Ming
Published: September 2013

The rapid progress of industry technology puts much higher requirement on product reliability, and it is imperative to introduce and apply advanced technology to test product reliability. In this paper, Multiple Environment Over Stress Testing (MEOST) is discussed briefly, including its implementing principles, preparation tasks and procedures, and its advantages are also analyzed.
Strategies for the Design of Ice and Snow Landscape of Urban Residential District in the Cold Regions
Authors: Yang Zhi Xiong , Ma Ting , Huang Jie
Published: September 2013

This paper proposes the problems of existing landscape design of urban residential district in the cold regions, and analyses the main reasons for the formation of these problems. Based on this, and according to analysis on the specific features of the ice and snow art in terms of residential landscape, this paper discusses strategies for the landscape design of urban residential district according to the regional culture context, environmental status and climate features. It is expected to provide useful reference for the improvement of the landscape design of urban residential district in the cold regions.
Working Principle and Mechanics Analysis of Circular Bundling Machine
Authors: Wei Juan , Shi Wen Pu
Published: September 2013

Mechanical principles are employed to analyze the working process of the modern agricultural circular bundling machine, the motion theorem of mass center of rigid body and the theorem of moment of momentum with respect to the centroid are used to give the relations between the driving force, feed roller diameter and angular speed and so on, the conclusions show the feasibility and technique in the design of the circular bundling machine.
Research on Technologies of Green Design and Manufactuirng for Toys Design
Authors: Guan Pai , Xu Xiao Yun , Guo Xiao Wen
Published: September 2013

In order to reduce the resource waste and environmental pollution in the toy industry, this article points out the shortcoming of the toy designs and manufacture, introduces the green design and manufacture concept, and elaborates the green design and manufacture technology in five aspects. At last, the article points out that green design and manufacture is the trend of toy industry.
Design of Single Star Simulator Based on LED Light Source
Authors: Gan Xin Ji , Gao Xing Hua , Chen Yan , Li Jing
Published: September 2013

This paper use a single LED light source with wide spectrum to develop a single star simulator of compact structure and high precision. In order to select the spectrum of LED as the light source of star simulators, the spectrum range of simulated star magnitude is researched through Main Star Sequence Diagram. It is found that the spectrum between 2m~7mmagnitudes is basically in accordance with the spectrum range of white light. The PWM current control system with 16 bites controller is employed to adjust LED luminescence through changing the duty ratio of PWM, which ensures the error of drive current less than 0.1%. The experiments show that the LED star simulator has the characteristics of compact structure, economical and easily controlled. The simulated precision of star magnitude attains ±0.1m.
Research on Methodology of Module Division in Fractionated Spacecraft
Authors: Ning Xin , Li Yi Fei , Yue Xiao Kui
Published: September 2013

This paper is based on the principle of module partitioning of fractionated spacecraft, uses the concepts of relevancy of module function, matter-element, fuzzy matter-element, develops hierarchical modeling of the relevancy of module function and provides the methods of ascertaining magnitude of intermodule relationship.Basing on the study and research of compounded fuzzy matter-element, weighted and compounded matter-element and relevant compounded matter-element and taking the method of cost estimation of fractionated spacecraft into consideration, the module partitioning of fractionated spacecraft is developed on the basis of analyzing the fuzzy matter-element.By means of simulated analysis, the realization approach of the module partitioning of fractionated spacecraft has been got, which is based on the hierarchical clustering, and the validity and applicability of this method has been verified through constrative analysis.
Simulation with Aspen Plus and Performance Analysis of LT-MED Seawater Desalination System
Authors: Ma Zhao Qin , Huo Shu Hao , Su Min
Published: September 2013

With Aspen Plus, three simulation models for Low-Temperature Multi-Effect Distillation (LT-MED) seawater desalination system are established in this work, which includes the parallel flow, forward flow and backward flow processes. Performance analysis including the motive steam flow, Gained Output Ratio (GOR) and heat transfer area are conducted as a function of the process type, number of effects, heating steam temperature and the effect NO. for Thermal Vapor Compression (TVC) ejection. Results indicate that the established simulation models are accurate and reliable; the process type, the number of effects and the effect NO. for TVC ejection have a great impact on the performance, while the effect of heating steam temperature on the performance is relatively weaker.
Product Module Division Method Based Degree of Modularity
Authors: Chen Yan Hui , Chen Yue Ping
Published: September 2013

This paper proposes a product module division method based on BOM and degree of modularity. First, based on BOM, the product structure tree is formed by taking spare parts as nodes, and the incidence matrix and correlation diagram are obtained by analyzing a variety of correlation of the nodes. Then, it proposes the definition of the degree of modularity, minimum value and mean value of the optimal degree of modularity are selected to determine the division of the modules. Finally, the working unit of the wheel loader are taken as an example to describe the reasonableness and effectiveness of this method.
Manufacture of an Unmanned Aerial Vehicle (UAV) for Advanced Project Design Using 3D Printing Technology
Authors: Ahmed Noor A. , Page J.R.
Published: September 2013

The phenomenal growth in three-dimensional printing technology has the potential of ushering in the next wave of industrial revolution. As part of an advanced project design conducted at the Aerospace Engineering of the University of New South, the concept of a printable unmanned aerial vehicle was explored. A subsequent small scale test model was manufactured using three-dimensional printing technology for wind tunnel testing and validation. The exercise demonstrates the huge potential of such printing technology in future aircraft designs.Key words: 3D printing, design, manufacture, UAV
Measurement Technique Based on the Three-Dimensional White-Light Scanner
Authors: Xie Xue Dong , Liu Xin Kuan , Cheng Jun Ting
Published: September 2013

White light scanner plays a vital role in reverse engineering. It has penetrated into all industries. It includes cars, grinding, aircraft, and mobile phone industry and so on. The paper introduces the basic principle of white light scanner and the measurement techniques.
Design and Development of Embedded Grinding Initiative Meter
Authors: Ren Guan Qing , Zhang Lin Na , Zheng Peng
Published: September 2013

For development of a high-performance grinding initiative Meter, this paper proposes an approach based on embedded system. The initiative Meter uses ARM9 microprocessor as hardware-platform and Windows CE 5.0 as operating system. It mainly describes the working principle and software and hardware design program in this article. It accelerates the speed of operation, enhances the real-time of measurement control, improves the measurement accuracy of initiative Meter through the adoption of high-performance microprocessor and multithreaded programming technology, and at the same time has good man-machine interface. The initiative Meter adopts touch screen operation, parameters of it can easily adjusted and set. According to the test, the embedded initiative Meter has a high performance in various aspects, it will have abroad market prospects for its higher ratio of performance to price.
Dynamics Analysis of the Spindle System in a Precision Multi-Shafting Friction Torque Measuring Instrument Based on ANSYS Workbench
Authors: Li Xiao Zhou , Zhang Lei , Wang Jing Dong , Yu Hua Dong , Xu Jin Kai
Published: September 2013

The spindle system in a precision multi-shafting friction torque measuring instrument is one of the most important parts of the instrument, its vibration characteristic analysis is an important work in the design of the instrument. At first, the spindle system of the horizontal structure in the instrument is analyzed. The supporting shaft, the measuring shaft and the torque sensor are simplified to be a whole,the bearing supports are simulated by using the elastic supports. Then the 3D model of the spindle system is built with CATIA. Finally by using finite element analysis software ANSYS Workbench, the modal analysis of the spindle system simplified is carried out to obtain the natural frequencies,the vibration modes of the first 6 orders and the critical speeds. The results show that the the spindle system can effectively avoid the resonance region.The necessary basis for further dynamics analysis is also provided through the modal analysis.
Experimental Measurements Research on Internal Micro-Environment of Individually Ventilated Cage System
Authors: Xie Dong , Mo Shun Quan
Published: September 2013

This paper firstly presents the operation principle of individually ventilated cages (IVC) system. Measurements on micro-environment of IVC system in laboratory animal room at University of South China are conducted to attain the internal environment parameters (Temperature, humidity, air velocity, air cleanliness and noise). Research results show that internal micro-environment parameters basically meet national standards about the barrier environment, but internal air distribution is uneven. In IVC system, air velocities in the edge side are higher than in the middle side, and the maximum air velocity is about 10% larger than the minimum value. Temperature in internal micro-environment depends on indoor temperatures which IVC system located in, and there has a close correlation between air velocity and temperatures. Internal environment evaluation could provide the first-hand research materials for guiding the breeding and management of laboratory animal.
Explore of the Smart Meter′s Security Protection Function Realization Method Based on Q/GDW1365-2012
Authors: Cen Wei , Lv Ying Jie , Sun Zhi Qiang , Li Bao Feng , Fu Yi Lun
Published: September 2013

In order to ensure the security protection level for smart meter to fulfill the requirements of state grids information security protection grade, promote the applications for the smart meters automatic detection pipeline, improve smart meters test efficiency, the state grid company has carried on the revision for Q/GDW 365-2009 "Security techniques of information interchange authentication specification for smart electricity meters", and has generated the Q/GDW1365-2012 standard. This paper has proposed the smart electricity meters security protection function realization method according to Q/GDW1365-2012s relevant revision item, combined with the questions often appears in practical work.
Infrared Image Denoising Based on Peer Groups with Median Filtering and Wiener Filtering
Authors: Li Bao Shu , Cui Ke Bin , Xu Xue Tao , Wei Wen Li
Published: September 2013

With characteristics of impulse noise and Gaussian noise, we propose a new denoising method to infrared image. We use Sobel operator to obtain boundary information, and determine the denoising method based on the pixel number of the peer group, denoising impulse noise and Gaussian noise with median filter and Wiener filtering. Experimental results are provided to show that the proposed filter achieves a promising performance in PSNR and boundary information, compared with the median filtering, Wiener filtering and peer group algorithms.
SCADA System of CNC System Reliability Testing and Implement Loading Conditions
Authors: Li Chuan Jun , Lv Dou Pan , Su Hai Qing
Published: September 2013

This paper puts forward the overall scheme of CNC System Reliability Testing base on the SCADA(Supervisory Control And Data Acquisition) system,introduces to the principle and sets up the physical system According to the selected hardware and software of data acquisition system and data storage system.It selects the mechanical load set load simulation method according to the characteristics of the test sample size is bigger. Using UG software to design and install to loading plate ,and tested.At present,The system of test has run with the safe operation of the normal,and obtain actual measured data about the reliability of CNC system.
Study on Application of Stress Wave for Nondestructive Test of Wood Defects
Authors: Lin Wen Shu , Wu Jin Zhuo
Published: September 2013

The elm wood samples were tested by the technique of stress wave, and the testing results were analyzed by using the statistic software of SPSS. The results showed that the moister content of wood, wood crack, the sizes of holes and numbers of holes have significant influence on propagation parameters and dynamic modulus of elasticity. Under the same specifications, the propagation time of the stress wave was longer in the wood with holes or cracks than the perfect wood samples, and the time become longer with the increasing the sizes and numbers of holes or cracks. The studying results of the thesis will provide a sound background for the application of stress-wave technique in detecting the inner defects of wood products and other wooden structures.
Non-Destructive Testing of Wood Defects Based on Ultrasonic Technology
Authors: Lin Wen Shu , Wu Jin Zhuo
Published: September 2013

The elm wood samples were tested by the technique of ultrasonic, and the testing results were analyzed by using the statistic software of SPSS. The results showed that the moister content of wood, wood crack, the sizes of holes and numbers of holes have significant influence on propagation parameters and dynamic modulus of elasticity. If there are holes or cracks in the propagation path, the propagation time will be longer, and the propagation velocity and wood modulus will decrease accordingly. The studying results of this paper will provide a sound background for the application of ultrasonic technique in detecting the inner defects of wood products and other wooden structures, and also offer important reference for testing the inner defects of old trees and ancient buildings.
The Simulation Research for Defect in Pipes Based on Time Reversal Ultrasonic Guided Wave
Authors: Wang Jian Bin , Du Yun Peng , Zhang Xuan Shuo
Published: September 2013

According to the insufficient ability of the existing ultrasonic guided wave detection technique, proposed a method for small defects in pipes based on time reversal (TR) ultrasonic guided wave. The L(0,2) mode guided waves was encouraged in the simulation research experiment. Results show that the guided wave detection signal has linear superposition properties, realized the detection energy focus on the location of the defects, and improved the ability of detection for small defects. The experiment lay a foundation for the miniaturization of the detection equipment.
Control System Design of Detection Device for Pipe Air Tightness Based on Water Test Method
Authors: Wei Wei
Published: September 2013

Traditional water test method has the advantage of locating leaks can be found, the disadvantage is inefficient manual detection, labor-intensive, can not be automated testing. By analyzing pneumatic and PLC control were introduced, pneumatic system of the detection device was designed, combined with operation process of the pneumatic circuit PLC control system was designed. Through the PLC control solenoid valve opening and closing, thereby control the implementing agencies of the pneumatic circuit, the device complete each course of action to achieve the test. Application of the system has maintained the advantages of the water detection assay, achieved a semi-automated detection, increased the detection efficiency, reduced labor intensity, and easy to operate.
Design of Multi-Point Wireless Pulse Measuring System Base on CC2530/Zigbee Network
Authors: Su Jun Feng , Nie Shuai Hua , Qu Shao Cheng
Published: September 2013

A multi-point wireless pulse measuring system based on CC2530 is discussed. By using a PVDF pressure sensor, human pulse signal is picked up. Then a filter circuit and a amplification circuit are designed to obtain accurate and stable signal. Based on single-point pulse measuring, multi-point wireless pulse measuring system based on CC2530/ZigBee network is constructed, and a data managing system based on LabVIEW is designed to deal with these signals. Finally, experiment is provided to show the effectiveness of the proposed scheme.
Keywords: Pulse; CC2530; ZigBee; LabVIEW; PVDF
Moving Target Classification in Road Monitoring Based on Multi-Feature Fusion
Authors: Wu Lin , Wu Xiao Pei , Xu Juan
Published: September 2013

A method for moving target classification in road monitoring based on multi-feature fusion is presented in this paper. In this method, connected component labeling and merging combined with morphology are used to achieve the target extraction. Static features in moving target are extracted. To improve the low classification accuracy, a dynamic feature, lower thirds aspect ratio variation (also named as LTVar), is proposed and added. The recognition ratio obtains the relative increasing of 3.1% compared with the static features.
Study on Condition Monitor Method for Tank Gun Recoil Mechanism
Authors: Li Hua , Zhong Meng Chun , Zhang Jian , Xu Da , Zhang Chun Lin
Published: September 2013

Aimed at problem that technical conditions parameters of recoil mechanism need to be monitored during maintain and guarantee, method on condition monitor method for tank gun recoil based on vibration signal is brought forward and monitoring platform is designed. Accordingly, monitoring technical conditions change of recoil mechanism is realized and technique support is provided for usability evaluation of key parts of tank gun.
The Design on Speed Monitoring System of Ship's Main Engine
Authors: Feng Yan Er , Li Li Li , Liu Juan Yi
Published: September 2013

Speed monitoring system of ship’s main engine was completed a few of functions such as ship speed signal acquisition. The smsm system can also count, analysis and process the signal through the master ecu, and display the host speed value on the lcd circuit. When the rotational speed of the ship’s main engine is different to the present speed, it’ll output a control signal to adjust the engine throttle . When the ship's speed exceeds the speed limit, The smsm will alarm by sound and light.
Vibration Measurement and Fault Diagnosis System for Experimental Teaching
Authors: Yang Xiao Yan , Xiao You Gang , Huang Jian Feng
Published: September 2013

Based on LabVIEW, vibration measurement and diagnosis system of equipment was developed for experimental teaching. On the platform, vibration signals from running equipment can be sampled, displayed, stored, and analyzed in time domain, frequency domain and time-frequency domain. The advanced signal processing technology such as power spectrum analysis, cepstrum analysis, demodulation analysis can also be executed. Using pattern recognition technology, the processed signals can be integrated for intelligent diagnosis of equipment state. The experimental system is helpful for students to learn signal processing methods, and to design virtual instrument.
Analysis and Exploration for Automotive Engine Vibration Signal
Authors: Zhang Chang Hao , Chen Yun Qi
Published: September 2013

In Modern society, most of car engines are multi cylinder four stroke engines, rotate speed is an important parameter of the engine, engine running status is a comprehensive expression of engine operation condition. It is also the result of the interaction by the gas torque, load torque and inertia moment. So the speed measurement is of great significance. Car engine speed measurement method has a lot of kinds, this article is based on the vibration method to measure, different methods used in vibration signal acquisition, analysis, processing and implementation. The vibration of the automobile engine output signals are continuous changes over time, we can say is a continuous signal. The vibration of the automobile engine output signals are continuous changes over time, we can say at this time is a continuous signal, when we use vibration sensor to gather the signals, a certain number of sampling points that are in different time, same time interval the vibration data resulting from the sampling theorem. At this time we deal with discrete time signals [1, 3]. Because of various vibration interference, The useful information we want to extract has been hidden in a lot of vibration under the disturbance signal, therefore, we carried out on the vibration signal analysis and processing, converting vibration wave in the frequency domain analysis, combining the new method of machinery vibration signal feature extraction, using short time Fourier transform, multiple correlation theory and Hilbert Huang transform combined with the application, making us in post-processing can extract the characteristic signal under the strong noise background [4]. The original signal frequency is obtained, based on related formulas to calculate car engine speed.
Research on the NC Machine Fault Diagnosis and Repair System with Case-Based Reasoning
Authors: Zhao Jian Bo
Published: September 2013

Since the widespread application of NC machine, fault diagnosis and repair of NC machine has been the subject of attention. Now both at home and abroad has a number of new concepts and methods to the field. The application of CBR technology in NC machine fault diagnosis analysis system is a very good exploration and research. Application of CBR technology is based on similarity of NC machine failure, using the method of case-based reasoning to identify the reference case, diagnosis method with reference to the case to find a reasonable solution. The CBR technology is applied to diagnose faults of CNC system, the accumulation of collection is convenient for the experts' experience, the fault diagnosis analysis system is more practical.
Dynamic Research on Vibration-Impact Crushing System of a Unilateral Single-Mass
Authors: Ni Su Huan , Chen Qing Guo
Published: September 2013

The vibrating roller crusher make relative vibration generated by two rigid bodies to bring high-frequency impulse. The force impact on grain layer (or granular) in chamber, which makes grain crush. Based on the newton's law, the vibration differential equations and dynamics model in vibration-impact crushing system of a unilateral single-mass are established. By dynamic analysis, amplitude frequency curve, hysteresis impact curve and energy absorption curve are all found. On the numerical values, principal resonance of system on forced oscillation is solved. Displacement, velocity and acceleration with the time history are induced. The results showed that the movement of a mass is not simple harmonic motion. From clearance and vibration frequency, influence laws on amplitude frequency, impact, energy absorption is also established.
A 2.4kb/s Speech Coder with Improved Analysis and Synthesis Based on MELP
Authors: Li Qiang , Zhang Xiao Hong , Xia Xu Jiu , Zhang Hao Ran
Published: September 2013

This paper describes a speech coder which has an input signal frame interval of 20ms percent in duration, contains 160 voice samples (8,000 samples/s) and 48 bits. A key feature of the coder is a novel Line Spectral Frequencies (LSF) quantization scheme, requiring only 19 bits per frame. This new coder, through algorithmic improvements, enhanced quantization techniques and new harmonic synthesis method, produces better speech quality at 2.4 kb/s transnission rate than the new U.S. Federal Standard MELP coder.
A Contour Tracing Algorithm for Ginseng Shape
Authors: Huo Bing Quan , Yin Feng Ling
Published: September 2013

More and more applications of computer technology are used in the field of agriculture. In this paper, Image processing technology is applied to ginseng shape. Get a color image from the device, remove the color information and reserve the boundary information. Highlight the image edge information by gradient sharpening, binary image and use 8-neighbourhood algorithm for tracking the border.
A Design of Z-Stack Application Based on the IEEE Address
Authors: Hua Wen Wu , Yuan Zhong Hu , Yu Xiu Zhen
Published: September 2013

This paper has designed a ZigBee application which is based on the IEEE address. This applications operating environment is TIs protocol stack called Z-Stack. The application can realize the following functions: wireless network self-organizing, the automatic acquisition and information upload. The upper machine communication protocol uses the IEEE address as device ID. This insures the application can find the datas physical source. With the help of network address, the applications speed and any other performance indicators will not drop. Using this application, the user can immediately find the accurate position directly after the security problem appeared. It has improved the efficiency of the wireless network management obviously.
Dynamics Performance of the Front Drive Shaft with Clearances
Authors: Luo Yuan Xin , Liu Jun
Published: September 2013

An automotive drive shaft is used in a front drive transmission vehicle for transmitting rotary movement from the gearbox output shaft to the wheels with a constant velocity. The kinematics model of ball joint and tripod joint has been studied without consideration of clearance. This paper will propose a new model with consideration of the clearances on ball joint and tripod joint. The simulation results are given by using this model. The conclusions are made as well as the future work.
A Stochastic Resonance Phenomenon in Linear Models
Authors: Zhou Deng Rong , Gong Jian Chun , Fan Fang Ling
Published: September 2013

When there exist certain kinds of matching in an electric system between the nonlinear input and noise, amplifying the input noise may dramatically increase the output SNR other than decrease it. And stochastic resonance is a phenomenon that when noise is input at certain amplitude the output SNR reaches its peak. Generalized stochastic resonance is the kind of nonlinear phenomena that the output (output SNR, output mean value, etc.) is a non-monotonic function of some parameter of noise (amplitude, correlation time) or input (amplitude, frequency). We studied the phenomenon of stochastic resonance in linear models with random parameters. And we discovered that the output amplitude is a non-monotonic function of the noise amplitude, the noise correlation time and the system parameters. The result will be a helpful complement to both the traditional linear system theory and the analysis of RL circuit.
An Improved Particle Swarm Optimization Algorithm
Authors: Yu Yu Feng , Li Guo , Xu Chen
Published: September 2013

Particle swarm optimization (PSO) algorithm has the ability of global optimization , but it often suffers from premature convergence problem, especially in high-dimensional multimodal functions. In order to overcome the premature property and improve the global optimization performance of PSO algorithm, this paper proposes an improved particle swarm optimization algorithm , called IPSO. The simulation results of eight unimodal/multimodal benchmark functions demonstrate that IPSO is superior in enhancing the global convergence performance and avoiding the premature convergence problem to SPSO no matter on unimodal or multimodal high-dimensional (100 real-valued variables) functions.
Classification of Ship’ Magnetic Field and Feature Selection Based on the Improved Weighted Fuzzy Clustering Algorithm
Authors: Wen Wu Di , Liu Zhong Le , Zhang Zhi Qiang
Published: September 2013

Magnetic field data of ship has three-component,and traditional weighted fuzzy clustering algorithm(FCA) can’t deal with the three-component data. We improve the traditional FCA by changing the objective function and added weights calculation of three-component of magnetic field in the function.Give the equation to compute the weights of three-component.Put forward new steps for improved algorithm.Use ships’ data to test the improved algorithm and giving the conclusion.
Cluster Hybrid Property Data Based on the Combination of K-Means and K-Prototypes
Authors: Zhou Hai Yan , Zhu Quan Yin
Published: September 2013

In this paper, a concept of hybrid property data which includes both numeric property and classified property is presented, accompanied with a definition about the distance between hybrid property data.
Projected Image Restoration Method Based on Genetic Algorithm for Cone-Beam CT
Authors: Huang Kui Dong , Zhang Liang , Bu Kun , Zhang Hua
Published: September 2013

For the problem of image quality degradation in cone-beam CT (CBCT) based on flat panel detector (FPD), a genetic algorithm based on pre-segmentation (PS-GA) is proposed for CBCT projected image restoration. According to the characteristic of that most of the area of the projected image is empty and without the tested object, a robust segmentation algorithm is used in this method to segment the smallest rectangle that contains the tested object, and the calculating range is limited to the smallest rectangle by the specially designed genetic algorithm, which significantly reduced the amount of calculated data. The experimental results show that the method raised the edge sharpness, contrast-to-noise ratio (CNR) and average gradient (AG) of the projected images and slice images, and there is no visible artifacts introduced.
Research and Design of Digital Signal Processing Virtual Experiment Platform
Authors: Zhang Xin
Published: September 2013

An intelligent virtual experiment platform can effectively solve the shortcomings of traditional laboratory which is limited by space, time and cost. In this paper, the relevant characteristics of the digital signal processing experiments, the design of a digital signal processing virtual experiment platform. The platform uses B/S architecture model and the Java language, it has platform-independent. The platform allows the user to independently build experimental process, innovation and experimentation; while providing component registration, users can use their own familiar language development component. Through experiments and registered instance, the feasibility and operability of the platform is verified, and it has a good practical value.
Vibration Signal of Recoil Mechanism De-Noising Processing Based on Wavelet Analysis
Authors: Zhong Meng Chun , Zhang Chun Lin , Cheng Li , Li Hua
Published: September 2013

This paper Expounds the importance of recoil mechanism in the whole Artillery Systems, and compares three Vibration Signal De-noising based on wavelet analysis. It chooses multi-wavelet to de-noise on the basis of characteristic of recoil mechanism vibration signal, and the result is acceptable. It lays the foundation for fault diagnosis of recoil mechanism.
Vehicle and Pedestrian Detection and Tracking
Authors: Tian Qing , Zhao Wen Hua , Zhang Long , Wei Yun
Published: September 2013

Vehicle and pedestrian detection plays a critical role in the intelligent transportation system. The paper proposes an algorithm which can solve the problem effectively by Histograms of Oriented Gradients (HOG) features extraction and Support Vector Machine (SVM). This detection system is based on Histograms of Oriented Gradients features combined with Support Vector Machine for the recognition stage which is insensitive to lightings and noises. We use Kalman filter to track the objects. As shown in experiments, the method has high detection rate and can also satisfy the real-time intelligent transportation system.
Sleep Analysis Based on Non-Load Detection Technique and Fuzzy Logic
Authors: Zhao Hai Qiang , Li Xiang Qian , Bi Da Cheng
Published: September 2013

Polysomnogram (PSG) has been the standard of the Sleep Analysis for many years. However it is complicated to operate, and attaches a lot of electrodes on the body. So the development of a non-load sleep architecture stage is necessary. Under the support of non-load detection technique, a new method for sleep architecture which takes advantage of variation of heart beat interval, respiration period body movement and the other physiological parameters during sleep has been studied. Due to sleep architecture it differs person to person, so the result of sleep architecture stage involves great uncertainty, using fuzzy logic theory achieves uncertainty analysis, and it can produce the more accurately result. This method has been tested on with PSG result as contrast, sleep analysis based on non-load detection technique and fuzzy logic has a high compliance rate. The method is qualified as being useful in clinical application.
Experimental Research of Photovoltaic/Thermal (PV/T) Solar Systems
Authors: He Yong Tai , Liu Rui Ming , Liu Jin Hao
Published: September 2013

A novel water photovoltaic/thermal (PV/T) solar system was designed, which consisted of a flat plate solar thermal collector and a flat plate PV/T collector in parallel. The area of flat plate solar thermal collector and PV/T collectors were 2m2, respectively. The performance of PV/T solar system was tested under condition of flat plate PV/T collectors with glass cover. The test results show that the average output electricity power of PV/T solar system was 28.1W in sunny day at 8:27-17:00 (March 8,2013, at Chuxiong city), the water temperature in the water tank insulation with 200L was raised from 18°C to 60°C. The daily useful efficiency of the PV/T solar system reached 46%. The PV/T solar system could meet the basic need of ordinary families to lighting electricity and hot water. The PV/T solar system had high practicality and was suitable for ordinary rural families.
Research on Intelligent Monitoring and Fault Diagnosis System Based on Multi-Agent Model
Authors: Yang Yu Dong , Ma Cong Guo
Published: September 2013

the system functions of intelligent monitoring and fault diagnosis based on Multi-Agent model were constructed, multi-Agent technology is development direction of fault diagnosis, the paper analyzed task decomposition and composition and realization method and key technologies of intelligent diagnosis and monitoring system, the model has a unified information interface, and builds the system based on different function components according to different monitoring objects, It will have a huge role in the realization of intelligent fault diagnosis equipment, and possess a certain guiding significance to the establishment of the intelligent monitoring and diagnosis system.
Research on Computer System Collecting the Vault Techniques
Authors: Liu Li , Zhou Ji He , Gao Zhan Le
Published: September 2013

we protocol to research and develop sport biomechanics quick response system for vault technical training, which quick analyzes vault techniques of athletes by using pressure plate on vault board to collect data of step position and strength, combined with synchronous acquisition of coxa joint kinematic parameters. This is helpful to improve the technical training effective of vault gymnast.
RMB Exchange Rate Forecasting Model Based on Exponential Smoothing and Gray Correlation
Authors: Liu Bing Xiang , Wu Yan , Cheng Xiang
Published: September 2013

This paper through the establishment of a Holts linear trend exponential smoothing model, make use of SPSS Clementine for 2005-2010 analysis and forecast of RMB against the U.S. dollar exchange rate, the predicted curve is better than the expectations of the prediction accuracy. To further analyze the dynamic changes of the RMB against the U.S. dollar, method of gray correlation factors that affect the exchange rate is used
Rotated Image Matching and Correction Method Based on Improved Circular Projection
Authors: Zhang Lei , Lin Shu Zhong
Published: September 2013

The key of rotated image matching is to determine the rotation invariant features. Accordingly, the circular projection algorithm is proposed. This paper presents an improved algorithm based on circular projection. Through improving the projection algorithm of radius and increasing the projection algorithm of rotation angle, this algorithm has the ability to match and rotation correction. Meanwhile, the algorithm for arbitrary rotation angle is effective, it is robust to the rotation and the noise, and it has high efficiency.
The Weld Image Acquisition and Preprocessing Based on FPGA
Authors: Yuan Zhong Hu , Liu Wen Tao , Han Xiao Wei
Published: September 2013

In the weld image acquisition system, real-time image processing has been a difficult design bottleneck to break through, especially for the occasion of large data processing capability and more demanding real-time requirements, in which the traditional MCU can not adapt, so using high-performance FPGA as the core of the high speed image acquisition and processing card, better meets the large amount of data in most of the image processing system and high demanding real-time requirements. At the same time, system data collection, storage and display were implemented by using Verilog, and in order to reducing the influence of edge detection noise, the combination of image enhancement and median filtering image preprocessing algorithm was used. Compared to the pre-processing algorithm of the software implementation, it has a great speed advantage, and simplifies the subsequent processing work load, improves the speed and efficiency of the entire image processing system greatly. So it proves that the system has strong ability of restraining the noise of image, and more accurate extracted edge positioning, it can be applied in the seam tracking field which need higher real-time requirements.
Fatigue Analysis of Vibration Device with 4 Eccentric Axis for Billet Caster
Authors: Shi Jia Lian , Xu Chang Liang , Meng Gui Yun , Ma Da Dong
Published: September 2013

The fatigue rupture is the main form on eccentric axis. Afterwards, make the load function by the eccentric axis and transient dynamics analysis of 4 eccentric axis by ANSYS software. Confirm the dangerous section and nodes. Finally, make fatigue analysis of vibration device with 4 eccentric axis, get the accumulation fatigue factor and get the fatigue life.
Corrected Background-weighted Histogram Mean Shift Tracking Algorithm Based on Adaptive Bandwidth
Authors: Liu Feng , Zhang Chao , Wu Xiao Pei
Published: September 2013

The CBWH (corrected background-weighted histogram) scheme can effectively reduce backgrounds interference in target localization. But it still has the problem of scale and spatial localization inaccuracy. To solve the above issues, we proposed a method which generates a color probability distribution by taking advantage of the targets salient features. In the binary image, we calculate the invariant moment and thus to resize the tracking window of the next frame. A simple background-weighted model updating method is adopted to adapt to the complex background in tracking. Experimental results show that the proposed algorithm improves the robustness of object tracking by self-adaptive kernel-bandwidth updating.
Design and Implementation on Printed Circuit Board Quality Inspection Integration Platform
Authors: Luo Lai Ping , Zhang Jing , Zhu Li Fang , Liu Cheng Shui , Hu Xing Lin
Published: September 2013

We propose a quality inspection integration platform to solve the general problems of inspection reports. This paper describes the technological process of quality inspection, the function design of integration platform, the key technology and the physical architecture. We create an integration platform in J2EE development environment. The platform is very effective for the work of quality inspection.
Five-Axis Machining and Impeller Vericut Simulation Optimization
Authors: Xiao Shan Hua , Zhou Wen Chao , Fu Gui Xing
Published: September 2013

Analysis impeller axis CNC machining process and processing content, applications Master CAM X6 software to generate a five-axis roughing trajectory of the impeller, the impeller expansion tank and wheels finishing trajectory, blade finishing trajectory. Vericut simulation software tool set, add the tool library, add rough, add impeller machining CNC program, set collision and interference color display, program optimization parameters, simulation of collision-free, without undercutting the five-axis impeller.
Analysis and Control of Chaos in Sheppard-Taylor DC-DC Converter
Authors: Bi Chuang , Fan Zheng Hang , Xiang Yong , Hu Jin Gang
Published: September 2013

This paper addresses the nonlinear dynamics of the Sheppard-Taylor converter to explain the complex behaviour exhibited in the converter under different practical conditions. The bifurcation diagram of the converter is generated to analyze the stability of the system. Several representative waveforms are captured from simulation to illustrate the chaos control of the converter, such as time-domain waveforms, phase portraits, Poincaré section diagrams, and power spectral diagrams.
Analysis and Compare of Two Control Modes in Physical Human-Robot Interaction
Authors: Xie Guang Hui , Jin Mi Na , Hashimoto Minoru
Published: September 2013

This paper focus on analyzing and comparing the merits and faults of neural oscillators and dynamics control methods for the physical human-robot interaction. Firstly, the principles of two control modes are introduced about neural oscillators and dynamics. Secondly, their self-oscillation and synchronizatin chracteristics are analyed and compared in both without input and with input cases respectively. Lastly, based on human-robot handshaking interaction, simulation is implemented by using two control methods respctively. And the validity of two control methods are compared and analyzed according to simulation results.
Mathematical Model for Assembly Tolerance Consistence Evaluation
Authors: Mao Jian , Zhao Man
Published: September 2013

An assembly is described by a geometric model of its parts and their relative placement. Assembly tolerances are the result of parts of varying shape and size being put together to make the finished product. This paper considers the case where parts have tolerance geometry. Its main contribution is to use a tensor space to describe assembly features. The mathematical models are developed. The proposed approach is based on assembly feasibility analysis of shaft and hole features.
Multi-Model Predictive Control with Kalman Filter on DC/DC Converter
Authors: Zeng Chen , Zhang Li Yan , Zeng Ling Hui
Published: September 2013

In this paper, a new kind of Multi-model Predictive Controller (MMPC) is presented. Multiple models switch MMPC with Kalman filter based on neural network optimization was implemented in a DC/DC converter. Multiple models direct switch was used according to the two modes of the Boost-Buck circuit and different loads condition. Kalman filter was successfully added to the MMPC to transfer the optimal state value to MMPC from the output of the DC/DC circuit. Parameters optimization method is also discussed in the paper when the controller was applied to real model simulation. Simulation result demonstrates that the good performance of MMPC compared with single model predictive control and PID control. With the help of high speed FPGA, it is possible to apply this method to hardware simulation.
Fracture Analysis on the Faucet Valve of HPb59-1
Authors: Mo Ming Zhen , Tan Ying , Cao Biao , Chen Ming
Published: September 2013

The cracking for the faucet valve made from HPb59-1 brass was investigated by SEM and EDS, metallographic microscope, optical spectrum. The results show that it was a kind of stress corrosion cracking caused by machining stress and corrosive environment (such as sulfur, chlorine etc).
The Design and Realization of Intelligent Control System in Temperature and Humidity of Tea Intelligent Fixation
Authors: Zhang Jian , Lan Yan Ting , Wan Yi
Published: September 2013

Aiming at the difficulty in control in tea fixation process, the intelligent control technology is adopted in the research which is for the core to the C8051F340 SCM and adopts the multi-point detection system to collect the temperature and humidity data. Besides, the data transmission with the epistemic machine can be realized by the I2C Bus, SPI and so on while the control rules and parameters of the controller can be intended. Thus it can be seen that the multi-parameter control of the temperature and humidity can be realized in tea green removing technology. The bunk watchdog circuit is adopted in hardware design to repair the systems bug automatically and safeguard the control system operate stably for a long time in this research. Additionally, the PID control algorithm is applied in software design to control systemic error less than 2%. Practical application indicates that this system is with simple structure, high reliability and good scalability, and it also can reduce the amount of labor and improve the teas quality.
An Adaptive Chaos Synchronization with Controller and Secure Communication
Authors: Zhou Bin , Wang Xiang , Gao Yu , Qu Shao Cheng
Published: September 2013

An adaptive controller with adaptive rate is presented to synchronize two chaos systems and to apply to secure communication. Based on Lyapunov stability theory, a sufficient condition and adaptive control parameters are obtained. Finally, the simulation with synchronization and secure communication is given to show the effectiveness of the proposed method.
Keywords: adaptive; synchronization; observer; controller.
An Improved PID Control for Wheeled Line-Tracking Robot
Authors: Chen Jun , Qiang Jun
Published: September 2013

This paper takes the wheeled line-tracking robot as the investigative object and the realization of intelligent control as the target, bases on SCM STC12C5A60S2, make the design of line-tracking robots soft hardware, and the line-tracking algorithm emphasis, presents a new method in PID control, and combining straight-line acceleration and channel bend modification, The experimental result shows that this line-tracking robot meets the design requirements with rapid moving and stability.