bluuebunny/crossref_metadata_2025 huggingface dataset:
The Development and Application of the Basic Functions of the EMS of Four-Cylinder Gasoline Engine
Authors: He Ya Jun , Wang Yang , Song Fei Yu , Hong Bin , Li Xiao Long
Published: December 2012

Introduced the MCU STM8S105C4’s basic framework,main function modules and corresponding technical parameters.Based on this MCU, With the crankshaft signal and camshaft signal, the throttle valve position signal, intake manifold pressure signal, and other signals for the treatment plan,the injection control and ignition control,we developed a corresponding control program flow charts and software implementation,to make sure the control of the four-cylinder gasoline engine’s operation correct. Simulation results show that,the design of the control system reach the expected goals,that makes the gasoline engine start and running steadily.
Signal Separation Based on Focused Neural Network Filter
Authors: Li Xian Mao , Lv Jiu Ming
Published: December 2012

Neural networks have been widely accepted as a good method for signal separation, signal detection and so on. Focused neural network is one of these, which do not need known knowledge of its parameters, and the signal separation effect is more satisfactory. Focused neural network can be used to separate the signal from the signal and noise mixture, the computer simulation experiment shows that the effect of the filter is fairly good.
A Robust and Rapid Image Preprocessing Method for Finger Vein
Authors: Xie Jian Bin , Liu Tong , Huang Zhong Zhu , Li Pei Qin , Yan Wei
Published: December 2012

In order to achieve robust and rapid image preprocessing for finger vein, this paper presents a robust and rapid image preprocessing method. With this method, locating & cropping, normalization, equalization and filtering are executed step by step. Then, quality assessment is done to exclude the images of low quality. The results of simulate experiments show that this method is effective and it is able to ensure reliable feature extraction.
Research on the Edge Detection Method of the Rice Leaves Image Based on Phase Consistency under the Complex Environment
Authors: Liu Li Bo , Zhao Chun Jiang , Wu Hua Rui , Gao Rong Hua
Published: December 2012

In order to realize the effective segmentation of the rice leaf lesion, how to remove background interference and isolating single rice leaf from collected images is the basis of disease classification and recognition. The main body information of the images collected under the simple background of lighting box and field contains only single leaf, so we can use the normal way to detect the blade edge. However, because of the outside interference under the background of field, parameters can't be quantified and the treatment effect of using ordinary edge detection methods is bad. This paper takes advantage of the characteristics that phase consistency test methods that protect them from the image contrast and brightness change and have a strong ability to resist noise to realize complete extraction of the main blade edge in the rice leaf image under the complex background.
Low SNR Singal Recovery System Based on Stochastic Resonance
Authors: Deng Hui , Liu Hao , Song Bing Tao , Zhang Han , Yang Sen
Published: December 2012

Stochastic resonance (SR) enhances the nonlinear system behavior with the assistance of noise. The energy-transfer mechanism makes the weak information revealed in the output spectrum, while the time-waveform is distorted. In this article, The Principle of stochastic resonance and recovery method are proposed and based on which, The nonlinear circuit is formed.At last, some examples are given to identify the performance of this nonlinear circuit.
Image Texture Feature Extraction & Recognition of Chinese Herbal Medicine Based on Gray Level Co-Occurrence Matrix
Authors: Liu Qing , Liu Xi Ping , Zhang Li Jun , Zhao Li Min
Published: December 2012

In order to effectively extract Chinese herbal medicine (CHM) image feature information, and automatically identify the CHM images, a method of CHM image feature extraction and recognition based on gray level co-occurrence matrix (GLCM) is put forward. Firstly, on the basis of the acquired colour CHM image is converted to the gray-scale image, the four texture feature parameters, angular second moment (ASM)，inertia moment (IM)，entropy and correlation are extracted utilizing the GLCM, and then CHM image recognition is carried out by using those feature values with resistance geometric distortion. The experimental results show that the method of generating GLCM and extraction of image texture features can effectively identify the CHM image, which can bring significance to the modern recognition and identification of CHM.
Classification of Biological Spectrum Based on Principal Component Cluster Analysis
Authors: Zhang Lian Shun , Shi Ai Juan
Published: December 2012

Spectrums of 17 biological tissue phantoms were measured using the fiber-optic spectrometer. Then, the spectrum was preprocessed by multiplicative scatter correction method to devoice the spectrum. Afterwards the features of the spectrum were extracted via principal component analysis. Ultimately, we applied cluster analysis for the spectral features. The results showed that the accumulated credibility of the first 12 spectral principal components was 99.86% for the spectrum after preprocessing; indicating that this spectrum feature extraction might be done in the case of losing no key information. And the results showed that the 17 biological tissue phantoms can be divided into four main categories according their optical features.
Applying Data Mining Methods to Structural Identification
Authors: Horalova Kalinova Michaela , Michalconok German , Gabriska Darja
Published: December 2012

The main purpose of this paper is to present the possibilities of applying data mining methods to the problem of structural identification of complex systems, focusing on the static structural system properties. In this paper we will define the main set of problems of structural identification and propose the way of their solution by means of data mining methods. A specific solution to selected problems is demonstrated on the model designed in the Matlab program. In the framework of experiment based on the results of simulation, we will identify the existence of internal relations in the system and analyze the degrees of their dependencies.
Design of a Type of Semi-Automation Stretcher-Vehicle
Authors: Dong Jian Cheng , Yang Yi , Li Yu Jie , Song Cheng Teng
Published: December 2012

The semi-automation stretcher-vehicle is used to rescue people in various situations. The vehicle is designed with certain new features, including power-drive, semi-automation, and the capability to climb stairs and go over obstacles. It is equipped with Servo Motors, triangular wheels with tracks, lifting device and so on. This structure realizes the semi-automation in the rescue process and solves the main problems of traditional stretchers, like their low moving speed, inefficiency, instability and so on. Besides, the stretcher could keep horizontal when it is climbing slopes, so it could keep the patient comfortable and prevent him from injury.
Security Design of Web-Based Information Integrated System
Authors: Chen Tao , Pan Hai Peng
Published: December 2012

Security is an important index in the design of information integrated system. Combined with the development of an information integrated system, the security design of database system and network of the Web-based information integrated system are researched. The safety management methods and implementation measures are presented, which have certain reference value in the actual execution process.
Numerical Simulation on the Stress and Strain of Lining Structure with Double Shield Tunneling Construction
Authors: Wang Feng , Cui Tie Jun
Published: December 2012

This paper takes the Section 201 of shield construction engineering in Dalian Metro Line 2 as an example to analyze the deformation law of surrounding soil and the tunnel lining structure stress during shield tunnel construction. The shield tunnel construction is simulated dynamically by ADINA and the shield tunnel structure model of the concrete lining is established. This model is a three-dimension nonlinear finite element calculation model concerned with the grouting soil and original state soil. Taking the soil lithology in the upper layer and interact influences, we analyzed the dynamic process of shield construction, soil grouting and lining supporting and the stress distribution in difference reinforced concrete supporting segments and the ground settlement characteristics. Through numerical analysis method to study the deformation law of soil surrounding tunnel and the stress in tunnel lining, we get the results to compare with the results of Peck formula under the same condition. After generating the conclusions, we can provide several suggestions for shield tunneling construction, lining segment design and control of the ground surface settlement during the construction.
The Design and Development of Learning Log Management System for C Language Web Classroom
Authors: Chen Jing Jing , Ren Zhi Shan , Fu Zhi He
Published: December 2012

Currently most c language web classrooms lack proper management system to help learners customize their learning progress. This paper introduces the design and development of an ASP-based learning log management system, which will provide learners with personalized learning in the c language web classroom.
Applying RBF Neural Networks and Genetic Algorithms to Nonlinear System Optimization
Authors: Wang Hong Fa , Xu Xin Ai
Published: December 2012

Nonlinear system optimization is always an issue that needs to be considered in engineering practices and management. In order to obtain optimal solutions without analysis formulas to nonlinear systems, we first construct a radial-base-function (RBF) neural network using the newrb() function in MALTAB 7.0, then train the neural network according to input and output, and finally obtain the solution using a genetic algorithm. Simulated experimental results show that the proposed algorithm is able to achieve optimal solutions with a relatively fast speed of convergence.
Random Choice of Logistics Distribution Route Based on Dynamic Programming
Authors: Zhao Hui Juan , Huang Dong Mei
Published: December 2012

It is important for logistics enterprise to choose the best logistics distribution route to improve efficiency. Dynamic programming is analyzed. Traffic jam factor of logistics distribution path is imported in the basic algorithm to modify the path value according to random distribution path condition. An example is used to verify the improved algorithm is practical.
Extraction of Design Factors of Product Family Based on Customer Needs
Authors: Ni Min Na , Lv Qing Zhang , Jin Ping
Published: December 2012

Design Factors of product-family is one of the important elements to maintain and to improve customers’ loyalty to a band. Extraction of design factors of product family based on customer needs promotes relations between brands and customers while improves satisfaction to products of the consumers. In existing studies, methods of getting customer needs have always attracted close attention. But the links between customer needs and design factors have not been adequately studied. By using QFD (Quality Function Deployment) and increasing the number of cascaded transformation hierarchies of the House of Quality, the method of extracting design factors of product family is proposed in this paper.
Information Service: Podcast Course Video-Sharing System, for Example
Authors: Huang Wu Lung , Chen Miao Sheng
Published: December 2012

This system focuses on teaching courses and the sharing of self-timer movie. It has open spirit of the textbook-assisted learning, encouraging users to upload, share, and expand. Provided as a passage of after-school instruction, the content of the teaching will be made into a movie and uploaded to the website for answers of questions. The use of Podcast platform can help achieve the sharing of knowledge and experience, for the platform has built up a course classification and message boards to provide teachers and students with the service of Q & A and account subscription. Successfully built, Podcast System can be used as a remedial teaching program in the department's website, which integrates the output of two-dimensional bar code as an application of action learning and guidance.
The Research and Application in Intelligent Document Retrieval Based on Text Quantification and Subject Mapping
Authors: Wang Qin , Qu Shou Ning , Du Tao , Zhang Ming Jing
Published: December 2012

Nowadays, document retrieval was an important way of academic exchange and achieving new knowledge. Choosing corresponding category of database and matching the input key words was the traditional document retrieval method. Using the method, a mass of documents would be got and it was hard for users to find the most relevant document. The paper put forward text quantification method. That was mining the features of each element in some document, which including word concept, weight value for position function, improved weights characteristic value, text distribution function weights value and text element length. Then the word’ contributions to this document would be got from the combination of five elements characteristics. Every document in database was stored digitally by the contribution of elements. And a subject mapping scheme was designed in the paper, which the similarity calculation method based on contribution and association rule was firstly designed, according to the method, the documents in the database would be conducted text clustering, and then feature extraction method was used to find class subject. When searching some document, the description which users input would be quantified and mapped to some class automatically by subject mapping, then the document sequences would be retrieved by computing the similarity between the description and the other documents’ features in the class. Experiment shows that the scheme has many merits such as intelligence, accuracy as well as improving retrieval speed.
Trust Federation of Identity Management in Distributed Environment
Authors: Li Dong Mei , Wang Yong Hong , Chen Jian Yong
Published: December 2012

Identity management systems in Internet belong to different circles of trust and it is difficult to set up trust relationship among Identity Providers (IdPs) or Service Providers (SPs) which are located in different circles of trust. This paper proposes a distributed trust federation framework to solve the problem and its efficiency is analyzed with several experiments. It uses IdPs which belong to multiple Circles of Trust (CoTs) as relay entities to set up trust relationship among CoTs. The proposed framework is effective to extend the trust federation of identity management systems and thus improve easy of use for users in Internet..
Study on the Software Trustworthiness Measurement Algorithm Based on the Grey Relational Analysis
Authors: Yang Jun Feng
Published: December 2012

Under the premise of the software trustworthiness’s understanding is in the grey level, the Software Trustworthiness Measurement get many people’s attention. Use normal method to complete software trustworthiness measure is very hard. By deeply research on the Grey Relational Analysis (GRA) and Software Trustworthiness Measurement Indicator Systems, this paper brings up the Software Trustworthiness Measurement algorithm based on Grey Relational Analysis (GRA), and gives out instances. Experiments showed that this algorithm has theoretical and practical values.
Information Hiding of MS-Office Compound Document
Authors: Zhu Geng Ming , Zhan Xiao Gang , Zhou Xing Lan
Published: December 2012

Propose an information hiding method to embed information into the FIB, directory structure, short stream, Document Summary Information stream and Data stream of Microsoft Office Word, Excel and PowerPoint documents. Experiment results show that the method has high volume of information hiding and good invisibility. The maximum information hiding rate can reach 30 percent. As the robustness of this algorithm is to be improved, the algorithm can be just applied to detect the change of the original document.
Innovation Design Method of Product Base on Materials Innovation Technologies
Authors: Guo Yuan , Shi Xin
Published: December 2012

Proposing the product design method based on innovative materials technology aim to play better the potential of materials’ application and to grasp the future trends of new products development. Combined with the recent typical innovative product cases to demonstrate four innovation design methods: reference, package and adhesion, superposition and integration, variation. These innovation methods’ applications indicate broader prospects of materials’ use that transformed from the state of “material”, the vision and touch of the “quality”, and it also play a positive role in new product development.
T91 High Temperature Reheater Piping Leakage Analysis
Authors: Niu Yu Jing , Song Li , Hu Feng Tao , Wang Ke Feng
Published: December 2012

Now T91steel is more and more used in power plant pipe components. The leakage of high temperature reheater pipe was analyzed after surveying the leaking site, checking material composition and observing the microstructure of related materials. We found that a large number of dust at the bottom of the pipe stopped the expansion of high temperature reheater tube rows, the connecting structure between pipes through fins was irrational, and welding fins process was substandard. Cracks were originated from fin-side weld, and extended to the pipe wall , which finally led to a leakage.
The Research and Application of Seeding Machine's Dislocation Type Seeding Device
Authors: Wu Rui , Xu Yuan Kui , Xue Shuai
Published: December 2012

Because of the rate of rotary seeding sowing machine is low,Turn the cylindrical roller into plane structure, The dislocation type seeding device is designed, The problem about the position relative to the Seedling tray and seeding machine is solved by useiing optoelectronic technology，Experimental results show that the new seeding device’s Seeding accuracy could reach 98%, the working efficiency of the machine is greatly improved.
Design of a Kind of Drilling Machine for Semicircle Shaft
Authors: Yang Wei Min , Zhao Shu Xia , Zheng Peng Fei , Lou Zhong Xing
Published: December 2012

The central shaft of floor strainer are composed of two semicircle shafts, which is made manually now. An automatic drilling machine is researched in this paper, which can sequence and feed workpiece, positioning automatically and feed automatically when drilling. The sequencing and feeding are implemented by vibration disk. The automatic positioning is implemented by Index Man and positioning disc. The feeding mechanism is executed by pneumatic device and its control system.
A Novel Approach to Evaluate the Stability of Production Manufacturing System Based on Petri-Net and Analytic Hierarchy Process
Authors: You Hou Xing
Published: December 2012

In the whole life cycle of production process, the stability of production manufacturing system is an important production factor. However, there were a few researches about the system stability in the past years. In this paper, for the stability of production manufacturing system, a new method is proposed based on Petri-net and analytic hierarchy process. In the proposed method, the reachability of manufacturing system is judged by using Petri-net, and the system stability is calculated by the successful probability of the key production nodes. Finally, evaluation steps of the new method are given, and the new evaluation method is applied in case study.
Study of Regenerative Braking Model and Simulation of a Car
Authors: Wang Feng , Wu Yong Hai
Published: December 2012

A regenerative braking control strategy and the braking force distribution are putted forward based on the basic theory of automotive brake. The model of vehicle regenerative braking system and simulation under urban driving cycles are carried out taking a certain type of hybrid car as the research object. The simulation results show that, in circulation conditions of ECE + EUDC drive, the regenerative braking control strategy that this paper puts forward can ensure the reasonable distribution of vehicle braking force and realize the energy recovery of 15.7%.
Spare Parts Production Planning Model Based on Fuzzy Programming
Authors: Zhang Xiao Yu , Liu Chen , Yang Nai Zong
Published: December 2012

In the field of civil aviation, MRO market has a strong seasonal characteristic. Combined with research on continuous airworthiness of the aircraft, the spare parts order procedure and flight planning process, and analysis on fuzzy demand and fuzzy production capacity, the model of spare parts order with fuzzy reliability constraints is established. Under the background of actual civil aviation enterprises, spare parts quantitative order model and algorithm in spare parts planning decision system in non-deterministic environment are put forward. It applies the theories and methods of fuzzy mathematics and probability and statistics, building the target programming model for reconfigurable spare parts, to formulate optimal reconfigurable spare parts production plan. Overall steps to solve the model are proposed, which make decision process in fuzzy environment more flexible, and reduce the number of emergency orders.
Value Chain Theory and its Application in Steel Enterprises
Authors: Dou Wei , Shi Jun , Wei Jian Xin
Published: December 2012

Steel enterprises compete in a global, rapidly changing economy. To develop a sustainable strategy requires a holistic understanding of past and present dynamics affecting the entire value chain on a local to global scale. The purpose of this research was to developing a conceptual framework and research process that provides a comprehensive view of the forces driving change in the organization, geography and relationships in steel enterprises throughout the value chain.
Business Process Management for Information System Implementation in Discrete Manufacturing Workshops Based on Multi-Agent Simulation
Authors: Zhang Shang You , Tan Ya Qing , Zhang Tian Hui
Published: December 2012

Information system implementation helps to promote efficiency of the workshops and enterprises’ competitiveness. It requires holistic analyses and investigation in the manufacturing workshops to ensure its success. This research proposes a framework to guide information systems implementation in discrete manufacturing workshops. In the framework, multi-agent simulation models are built to analyze the business processes in the workshops and some techniques from Business Process Management (BPM) are applied to modify or change the processes. The effectiveness of the framework is proved by its application in a discrete manufacturing workshop.
Scheduling to a Common Due Date on Unrelated Parallel-Machine with Deteriorating Jobs
Authors: Hsu Chou Jung
Published: December 2012

This paper explores scheduling to a common due date on unrelated machines with resource allocation and deteriorating jobs. The main purpose is to determine the optimal resource allocation and the optimal job sequence so that the cost function that includes the sum of earliness, tardiness, and resource cost will be minimized. Result showed that the problem is polynomial time solvable when the number of machine is fixed.
Study on Supply Chain Performance Evaluation Method of Equipment Spare Parts
Authors: Gu Hong Qiang , Song Hui , Zhang Cheng
Published: December 2012

Conducting the performance evaluation of equipment supports parts supply chain timely and accurately can provide reliable information for equipment support commander to adjust equipment spare parts inventory policy. Fuzzy comprehensive hierarchy analysis method is used to evaluate the supply chain performance of equipment spare parts. The performance evaluation index system of equipment spare supply chain is established firstly based on the analysis of all the influence factors. The application steps of fuzzy comprehensive hierarchy analysis method to supply chain performance evaluation are illustrated in detail. A performance evaluation example is conducted at last. The evaluation result demonstrates that the provided method can give the performance level, which verifies the correctness and validity of the proposed method and provides an efficient method for supply chain performance evaluation of equipment spare parts.
Study on Chinese Container Associates and its Construction Strategy
Authors: Chen Sui Lei , Wu Qi Fang , Sheng Jing Jing
Published: December 2012

With a rapid development of the Chinese economy, there is a huge amount of logistics costs, while China still has not established the container associates，and even it has not proposed a practical model of the container associates yet. Therefore, the model of Chinese container associates is proposed based on the analysis of banking operations as well as the loan of money and the comparison of container lease. Meanwhile, proposing an operation model for container associates, in which also refers to the bank operation pattern and practical experience，as well as proposing the container associates construction strategy. Finally, in order to realize the exchange of information system and high efficiency of network operation management, the concept of using RFID technology to research and develop the container associates management information system will be described in full details.
Energy-Saving Technologies of WSN
Authors: Zheng Rong Mao
Published: December 2012

In order to layout convenient the wireless sensor node generally used battery for power supply, the node require working up to several months or even years but battery replacement was difficult or impossible. In this paper, research does not affect the function of WSN how to save the node energy consumption, which can work more time in large-scale collection, processing and communication of complex environmental data. Results show that the energy-saving technologies can be to reduce the energy consumption of 55.6%, which can greatly extend the working life of the wireless sensor node battery.
Modeling and Optimization of Traceability System for Agriculture Products Supply Chain
Authors: Li Feng , Zhu Ye Ping , Wu Hua Rui
Published: December 2012

As the traceability system of agricultural products supply chain has much links and complex factors, difficulty to model, a unified hierarchical model was constructed and optimized by analyzing of agricultural products supply chain from farm to plate and extracting of typical flow and main factors. The unified model has two dimensions of flow and factor, each dimension is divided into several levels. The model can describe suitably of quality flow, information flow and material flow of traceability system. The model was optimized through the analysis of quality data in traceability system. we pointed out that the agricultural products processing is the most important aspect in agricultural products supply chain.
Model and Finite Element Analysis of a Bus Body
Authors: Wang Feng , Fan Qin Man
Published: December 2012

ANSYS is used as the finite element computing platform to analysis a certain type of bus body frame under four load conditions of bending conditions, reversing conditions, the bending and torsion conditions and the emergency braking conditions. The constraints and load approach in the four conditions are given in this paper. A certain type of bus body skeleton program and the finite element analysis are conduct. The result shows that: (1) Bus body frame changing brings the re-distribution of the stress, making the overall stress and deformation of the body skeleton relatively uniform. (2) The improved program makes more than 250KG weight losing of the body frame and the changing location of the maximum deformation under the bending conditions. The maximum bending deform increased is only 8.92%.
A New Way of Virtual Prototype Design and Analysis for Tractor Steering System
Authors: Tang Xiu Ying , Xiao Dan , Liu Ling , Mao En Rong , Song Zheng He , Peng Yan Kun
Published: December 2012

A new way of virtual prototype design and analysis for tractor steering system was discussed, by which the function of experimental design and optimization design for the tractor steering system was achieved with three dimensional modeling software, kinematics and dynamics analysis software, finite element analysis software and their secondary development techniques. A non-sideslip analysis system based on VC++ platform for tractor steering system was developed, and the interface between softwares and key development procedures were introduced by using Pro/E, ANSYS and ADAMS softawre analysis techniques and their secondary development techniques. Considering the factors of steering trapezoid rod and the trapezoid basic angle of steering trapezoid mechnism, the relative conclusions were got by the running instance. The experiment results showed that simulation analysis could be achieved without any abundance manual operation and the design analysis efficiency could be improved, which would provided the theoretical base for actual design analysis of tractor.
Offshore Platform Deck Crane Fatigue Analysis Based on Abaqus
Authors: Wang Shu Yun , Mei Qing , Liu Lin , Zheng Yu Qing
Published: December 2012

This article discussed the offshore platform deck crane fatigue performance with the finite element method. In Abaqus Fatigue Module, the fatigue strength analysis for the offshore platform deck crane was executed. Based on the fatigue simulation results and the material S-N curve, we made a reliable assessment of the offshore platform deck crane fatigue life. This fatigue analysis procedure can be easily used for optimizing the deck crane structure and reducing the maximum stress amplitude till to meet the engineering design specification.
Parameterized Modeling of Circumferential MEFP Warhead Based on Characteristics
Authors: Liang Zhen Gang , Jiang Jian Wei , Zhang Ti Guang
Published: December 2012

Every component of the circumferential MEFP warhead was analyzed and the key parameters that affect the performance of warhead were summarized. The parameterized design of circumferential MEFP warhead was realized by applying the CAA/C++ technology of CATIA for second development and the parameterized modeling process was obtained. The 3D model used for subsequent finite element analysis can be quickly built by programming-driven method to make warhead study convenient and improve the design efficiency.
Research on the Virtual Assembly-Disassembly and Repair of the Automobile Drive Axle
Authors: Sun Hong , Deng Wei Gang
Published: December 2012

The article made a research on the automobile drive axle, established its three-dimensional model in SolidWorks, and virtually simulated the assembly, disassembly and repair process of the axle shaft, final drive and differential in 3DVIA Composer software. A dedicated virtual simulation platform for automobile drive axle was developed, and the simulation process was controlled individually by the program codes. The virtual simulation platform effectively reproduced the assembly-disassembly and repair process of the automobile drive axle, which provided a good technical documentation for the production practice and teaching practice.
The Assembly Design of Non-Ball Mills
Authors: Li Kun Shan , Li Yang
Published: December 2012

The purposes of assembly design (DFA) are aimed to rapidly fit certain machine parts together with the final assemble quality guaranteed. This indicates certain measurements are taken in the very initiative stages to achieve the lowest assembly cost, include quantitative analysis of products; products design optimizations and compression of assembly time. To both aspects of products assemblage capabilities and cost reductions, the DFA usually acquires the least numbers of parts also ensures the ease manufacture and assemble of the parts.
ANSYS Application in Modal Analysis of Bus Body Frame
Authors: Xu Li
Published: December 2012

Some critical problems of bus body frame during the modal analysis are presented by the principle of Finite Element Method. Then bus body frame is analyzed. After the modal parameters of the frame are obtained, dynamic performance of body frame is discussed to provide reference for the betterment of body frame dynamic performance design.
ANSYS-Based Finite Element of Rear Frame in Underground Transport Vehicle
Authors: Sun Li
Published: December 2012

Rear frame is an important component of underground transport vehicle, used to carry different functional devices. This paper took rear frame as a research object. First of all, software Proe was used to set up geometrical model; secondly, software ANSYS was used to establish a FEM model to grid and set boundary conditions, and then analyzed rear frame stress and strain in working speed. The results showed that the deformation of rear frame is very small, meets the design requirements; the maximum stress of rear frame is far less than the allowable stress, which meets the strength requirements. It provides important theoretical basis for rear frame’s design.
Fault Diagnosis of Valve Train of Internal Combustion Engine Based on the Artificial Neural Network and Support Vector Machine
Authors: Bi Feng Rong , Song Zhen
Published: December 2012

The theory of artificial neural network and support vector machine has been introduced. According to the characteristics of vibration signal for the valve mechanism, fault diagnosis has been proposed for abnormal valve clearance based on artificial neural network (ANN) and support vector machine (SVM). Two kinds of intelligent technology have been compared in fault identification by changing the number of training samples. The diagnosis has indicated that at small number of training samples SVM has high generalization ability, and at large number of training samples, ANN has exact recognition when it comes to diagnosing valve train.
Design of Non-Ball Mill Based on the Green Conception
Authors: Li Kun Shan , Li Yang
Published: December 2012

Development mode of non-ball mill is based upon modern design strategy and green design theory, which have been deeply discussed on all stages of its whole life cycle—preparation, decision, design, manufacture, assembly, installation, disassembly, maintenance and re-usage.
A Note on the Early Failure Period for CNC Machining Tools
Authors: Jia Zhi Cheng , Yang Zhao Jun
Published: December 2012

Through the plentiful authentic early failure data collected by field tracing test of 30 CNC machining tools with ATC (Automatic Tool Changer), we searched for the rules and distribution of early failure of the CNC machining tools. Main fault mode and facts which usually make a great possible impact on the reliability of these products are identified based on an analysis of these early failure data. The distribution model of early failure is found by analyzing and processing these data with the method of regression analysis and hypothesis testing as well as Bayesian forecasting of early fault phenomena. Suggestions how to enhance reliability level of these products are proposed.
High Order Spectrum Characteristics of the Elevator Fault
Authors: Zheng Yue Kun , Huang Yi Jian
Published: December 2012

Used the high order spectrum and slice analysis method, studied the elevator running vibration acceleration signals and calculated the trispectrum two dimensional slices, bispectrum and theirs diagonal slices, under different running conditions. The results show that: when the elevator normal operation the acceleration signal spectrum peaks concentration, otherwise the acceleration signal peaks dispersion; in fault condition, compared to bispectrum peaks trispectrum peaks is sharper. High order spectrum contains abundant information of different fault elevator running details. It is a suitable analysis tool for diagnosing the faults of elevator.
Stress Analysis of Ultra-Supercritical and Electrical Three-Way Valve Body Intensity in a High Pressure Heater Using FEM
Authors: Li Shu Xun , Hu Jian Hua , Li Lian Cui
Published: December 2012

Temperature and thermo-mechanical coupling stress distributions of the electrical three-way valve body in a high pressure heater are investigated by using finite element method analysis. Maximum stress at the outer wall region of the valve body has exceed the allowable stress of the material is obtained. The weak place is improved by increasing the wall thickness and the stress meet the requirement of the allowable stress of the material after FEM analysis. And the thermo-mechanical coupling stress are classified and evaluated in the most dangerous section. The evaluation results show that the various types of stress all meet intensity requirements, which provide a guideline for the design and optimization of the high temperature and high pressure valve in the future.
Credibility Measure and Assessment Method of Equipment Severity to Voltage Sag
Authors: Liu Xu Na , Wang Ying , Xiao Xian Yong
Published: December 2012

In order to accurately describe the equipment’ severity caused by voltage sag, the credibility measure which meets the conditions of non-additive is proposed based on their physical properties of responses. This assessment measure can avoid the deficiencies that classical probability measure needs a large number of samples and the non-duality of fuzzy measure. The membership functions of sensitive equipment voltage tolerance capability that corresponding to the characteristic quantities in the status uncertain area was determined by fuzzy statistical method and polynomial fitting method. Then the joint credibility distribution function was deduced based on uncertainty theory. Hence, the assessment model of severity of equipment failure is constructed. Based on practical samples, the PCs were simulated using the proposed method. Comparing the simulation results with methods using classical probability measure and possibility measure prove that the proposed method is proper and credible and can reflect practical condition more objectively.
Discussion about Circuit Board Fault Diagnosis Based on D Algorithm
Authors: Xing Xiu Qin , Yao Zhu Ting
Published: December 2012

The paper proposes fault diagnosis system that simplify circuit before using D algorithm， aiming at creating detection vector inefficient. Through simplifying circuit, the hour of creating detection vector is cut and establishment of fault diagnosis databases is easy. This method is applied to diagnose fault of output circuit board on tank. In conclusion, this method of the fault diagnosis to circuit board orientates the fault accurately and quickly.
Research on Fault Diagnosis Based on TEAMS
Authors: Liang Yan Hong , Wu Qing Yi , Jin Dan
Published: December 2012

The paper focuses on introducing the basic condition of the TEAMS and the basic design process of multi-signal modeling and diagnostic strategy. Moreover, it introduces the applications of TEAMS in fault diagnosis from three aspects: model establishment, performance analysis and diagnostic strategy. The superiority and effectiveness of above-mentioned method is verified by an instance and the results are useful to the fault diagnosis of complex electronic equipment.
Mechanism Movement Reliability Analysis of Galting Gun
Authors: Han Xiao Ming , Bo Yu Cheng , Li Qiang , Guo Yun Jian
Published: December 2012

In order to improve mechanism movement reliability of galting gun, through analyzing functions at different periods of mechanism movement course and basing on reliability, mechanism kinematics and movement error analysis theory, design variables which affect mechanism movement reliability are sampled according to distribution law. Using VC++ development environment and MFC class library’s supporting and putting parametric model into ADAMS software, mechanism movement characteristic at different design parameters is emulation calculated. According to emulation results mechanism movement reliability is estimated and all design parameters’ sensibility is analyzed, which realizes mechanism movement reliability analysis based on parametric model and provides a useful exploration for galting gun’s reliability design.
Preliminary Perform of PDM Technology in Automotive Design
Authors: Zhou Hong
Published: December 2012

Taking the design of automotive product as an example , the designing thought of PDE technology was made full use of This article . On the basis of establishing components figure library and data base of the chassis parameter, by the secondary development of VB and AutoCAD 2000 software, and blending the drawing design of automobile product and data management, this is automobile product data management（the abbreviated is APDM）. To some extent，the system has performed the virtual design of automotive chassis. It can design automotive and inquire data fast and efficiently. Thus it reduces the designer’s labor intensity and raise designing efficiency.
Impacts of Protection Cooperation on Voltage Sag Frequency and Sensitive Equipment Trips
Authors: Chen Li Pin , Xiao Xian Yong , Wang Ying , Jiao Jian
Published: December 2012

When faults happen to the power system components, the duration of voltage sags is determined by the cooperation of protection system. Many literatures have been done in analyzing the factors which influence the magnitude of voltage sags, but the impact of protection cooperation on sag duration is not considered by existing studies. In order to estimate the duration of voltage sags more precisely, the novelty of the proposed approach is in probabilistic modeling of the cooperation of the protection system using the concept of Markov state space, then voltage sag frequency and sensitive equipment trips considering protection cooperation can be estimated by utilizing the configuration and setting value of the protection system. The proposed method was applied to the IEEE 57-bus test system, and the simulation results show that the proposed method is practical, simple and adaptive.
Application of Sliding Window-Genetic Programming Algorithm in Alert and Forecast for Mine Safety Monitoring
Authors: Ma Ru Hong , Dong Xiao Hui , Wang Jian Lin
Published: December 2012

SW-GP (Sliding Window-Genetic Programming) algorithm is provided to implement dynamic forecast of monitoring data in order to more effectively utilize coal mine monitoring data to alert and forecast safety accident. In the program, sampling data is obtained by sliding window technology and model is founded automatically by GP algorithm. The result of instance shows that forecasting values from the model well agree with the real values, which explains that employing SW-GP modeling can settle problem for alert and forecast for mine safety monitoring data satisfactorily.
Camera Calibration of Binocular Vision Based on Virtual 1D Target
Authors: Guo Yu Bo , Chen Gang , Ye Dong , Yuan Feng
Published: December 2012

A field calibration method based on virtual 1D target is proposed for the extrinsic parameters of binocular vision. A target is placed on high precision 1D lifting platform to create virtual 1D target through motions of lifting platform. Two cameras are used to obtain virtual target images of different positions and preliminarily achieve extrinsic parameter calibration of binocular vision based on epipolar constraint equation. Finally, the length of virtual 1-D target is used to optimize the extrinsic parameters. This method is featured with easy operation, flexible application and field calibration. The experimental results verify the feasibility of this calibration method and show it can yield high field calibration precision.
Research on Key Technologies of the Needle Loom Condition Monitoring System
Authors: Deng Hui , Song Bing Tao , Liu Hao , Zhang Han , Yang Sen
Published: December 2012

Nowadays, condition monitoring and intelligent fault diagnosis methods research of the needling loom in our country is still a blank. How to establish appropriate monitoring methods under different working conditions becomes an important issue. In this article, some methods in terms of the open system construction proposed to work out the problems above. This open system take full advantage of the rapid development of hardware and software technology, and its remote update function enrich remote monitoring methods, providing online or offline information to remote monitoring terminals for different processing conditions, integrated with realizing the needle loom field condition monitoring and physical state online detections.
Determination of Multi-Element in Egg of Poyang Lake Anas platyrhynchos by ICP-AES
Authors: Tu Yong Gang , Zhao Yan
Published: December 2012

The contents of inorganic elements such as Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Li, K, Mg, Mn, Mo, Na, P, Pb, Zn, Se and Sr in egg of Poyang Lake anas platyrhynchos were determined by using inductively coupled plasma-atomic emission spectrometry (ICP-AES). The recoveries obtained by the standard addition method ranged between 84.4%-113.7%, and RSDs were lower than 8.02%. The measuring method provided better accuracy and precision. The determination results showed that the egg of Poyang lake anas platyrhynchos was rich in essential inorganic elements, and the contents of most of the inorganic elements in yolk were higher than protein. The contents of Cu, Fe, Mn and Zn in edible part of anas platyrhynchos egg were higher than Sheldrake, while the contents of Ca, P and Mg were less than Sheldrake. The contents of Ca, P, and Mg in anas platyrhynchos eggshell were less than Sheldrake
Method of Disease Diagnosing Based on SVM and Rough Set
Authors: Liu Bai Lin , Gao Li Xing
Published: December 2012

To solve the problem that large training samples and slow speed in diagnosing based on support vector classifier, a hybrid classification algorithm applying attribute reduction of rough set and classification principles of SVM to diagnose diseases was proposed. RS was used to preprocess the attributes on condition that no effective information was lost. Redundant attributes and conflicting objects from decision table was deleted. And the dimension and complexity in the process of SVM classification was reduced. Then it classifies and forecasts objects by SVM classifier, so as to achieve the diagnosis for case. Experiments show that it can improve the rate of diagnosis under the reasonable reducing accurate rating after RS reducing information, and can improve the speed of diagnosing diseases when SVM dealing with much disease information.
Research on the Computational Algorithms for Layer Wound Linear Variable Differential Transformers
Authors: Jiang Lei , He Guo
Published: December 2012

According to the algorithms of traditional Linear Variable Differential Transformers (LVDTs) could not represent the performances of the Layer Wound Linear Variable Differential Transformers (Layer Wound LVDTs), new computational algorithms were presented in this paper. Based on magnetic circuit theory, the calculations for the Layer Wound LVDT’s magnetic circuit reluctance, self-inductance, mutual inductance, output voltage and sensitivity are provided. Simulation analysis and experimental tests were used to verify the calculations. The results show that the calculations and equations can accurately express the performance of the Layer Wound LVDTs.
Design of Measurement System for Solid Propellant Kneading Machine’s Pot Temperature
Authors: Jin Xiao Li , Chen Song , Ma Bao Ji
Published: December 2012

According to the characteristics of solid propellant kneading machine, a set of wireless temperature measurement system is designed. In the system, the temperature signal is collected by three sets of temperature sensors and AT89C55, then the signal is transmitted through NRF2401+, which is the wireless transceiver module, at last, the single-chip communicate with the remote host through the RS232. Proved by experiments, the system have some advantages, such as the designed of the simple circuit, easy data transfer, multiple simultaneous acquisition, real-time good and remote monitoring.