bluuebunny/crossref_metadata_2025 huggingface dataset:
Virtual Communities of Practice Success in Healthcare Sector
Authors: Alali Haitham , Salim Juhana
Published: September 2013

Healthcare organizations spend hundreds of thousands implementing KM initiatives in term of developing practitioners and expert resources. One of the KM initiatives in healthcare sector is Virtual Communities of Practice (VCoPs). VCoPs are used by health professionals and researchers to improve the quality of healthcare services by enhancing health practitioners knowledge. However, some researchers and practitioners question the effectiveness of this contribution owing to the well-publicized failure of numerous KM initiatives. Based on the prior IS success theories, this article has developed a multidimensional model of VCoPs success to support knowledge sharing behaviour among healthcare practitioners. The proposed model can be used to evaluate and measure the effectiveness of VCoPs in knowledge sharing. This in turn might fill the available gap in translating research findings and evidence based practices into action (Know-Do gap) in daily healthcare practices.
A Multi-Core Architecture for Video Streaming
Authors: Li Jun , Chen Jun , Li Ming Zhe , Wang Ling Fang , Ni Hong
Published: September 2013

In this paper, we focused on the architecture of video streaming based on multi-core processor. Compared with traditional video streaming server, multi-core architecture has a number of advantages: (1) according to system requirements, its flexible to add or remove executing core, (2) modules or units which consume much CPU resources can be configured to run concurrently on several cores, (3) multi-core architecture is fault-tolerant, and (4) the multi-core architecture fits well to future process technologies, more cores will be available in advanced process technologies, meanwhile the complexity per core does not increase. In order to improve the efficiency of video streaming and promote the concurrence number of tasks, we proposed a pipeline-parallel hybrid multi-core architecture on multi-core processor. We implemented the video streaming system with proposed architecture, and provided evidences of 48% outperformance based on Cavium OCTEON CN5860 multi-core processor than full parallel architecture.
Prefetching Scheme in Streaming System Based on Interactive Media Access Patterns
Authors: Zhang Xi Wen , Wu Gang , Wang Song
Published: September 2013

User behavior modeling is critical to help reduce delays due to buffering before and during a video playback at a client. In this paper, we model the states a user transitions while browsing through videos to be the hidden states of a Hidden Markov Model. The users next seeking position was estimated according to the maximum posteriori criterion. The proposed prefetching schemes chose and download the data block which had the higher caching value in advance to reduce data access delay. We evaluate and compare the proposed schemes using user browsing pattern data and find that prefetching scheme can improve the seeking performance significantly.
Real-Time Surveillance Systems in Badminton Training
Authors: Li Dong Yao , Huang Jing Jing
Published: September 2013

The badminton sports training process surveillance system that this paper purports to build takes over modern information technical media measures to make real-time statistical analysis on the technical and tactical performance during the badminton training process for the diagnosis and evaluation on the badminton technical and tactical levels promptly; actualize online transmission and online forums to solve difficult problems arisen from training by gathering many peoples wisdom, revise and improve tactical arrangement; collect and build a database of excellent badminton players technical movements; check in real-time badminton training and live competitions.
Design and Implementation of OTT Services Based on IPTV STB
Authors: Xia Zhi Qiang , Ma Li Ming , Cao San Xing
Published: September 2013

Currently, the main disadvantages of OTT services are live video delay and video quality assurance while OTT services have many interactive contents. In contrast, IPTV reception effect is better however policy restrictions, incomplete standards and lack of content are the IPTV deficiencies. Therefore, this paper proposes a method of implanting OTT services into IPTV system. The design and implementation maintain the intrinsic IPTV services and ImageMagick is used to present OTT services in IPTV set-top box (STB) according to the current IPTV industry standards. Meanwhile, the services can be designed through the management software. Finally, the OTT services based on IPTV STB can enrich IPTV video content and enhance user interactive experience.
Robust Stability Analysis of Delay-Dependence for a Class of Switched Uncertain Systems with Time Delay
Authors: Wang Chi Jo , Chiou Juing Shian
Published: September 2013

Some new criteria of delay-dependent stability for the switched time-delay uncertain system are deduced by employing time-switched method and the comparison theorem in this paper. The total activation time ratio of the switching law can be determined to guarantee the switched time-delay uncertain system is exponentially stable with stability margin . Finally, this method can be extended to switched interval systems with time-delay. Some examples are exploited to illustrate the proposed schemes..
An Improved Initial Alignment Method of Strap-Down Inertial Navigation System on a Swaying Base
Authors: Zhu Li Hua , Cheng Xiang Hong
Published: September 2013

The design of an improved alignment method of SINS on a swaying base is presented in this paper. FIR filter is taken to decrease the impact caused by the lever arm effect. And the system also encompasses the online estimation of gyroscopes’ drift with Kalman filter in order to do the compensation, and the inertial freezing alignment algorithm which helps to resolve the attitude matrix with respect to its fast and robust property to provide the mathematical platform for the vehicle. Simulation results show that the proposed method is efficient for the initial alignment of the swaying base navigation system.
Collaborated a Two-Master-Slave Manipulator Arm with Force Reflection for Defined Miniature Tasks
Authors: Nuchprayool Nuttapong , Sangveraphunsiri Viboon
Published: September 2013

This paper presents the development of a two-master-slave manipulator arm with force reflection for miniature tasks operation. The configuration of the two-master-slave arm is shown and the dynamic model of the slave arm is analyzed. The PID controller with the gravity compensation is selected for controlling desired positions of slave-tool-tips. The movements of the slave arm can be specified with coarse and fine motion. For the coarse motion, the slave arm will be moved approach to a specified workspace area with low precision but high speed. For the fine motion, the slave arm will be controlled with low speed so that the operator feels more confident to move the slave arm, through the master arm, with higher precision within the specified workspace. While operating the manipulator system, the operator can turn on/off the virtual fixture to command force reflection at the master arm for preventing a collision between the slave arm and the obstacles inside the specified working space. The experimental result is shown that the manipulator system is able to be used in miniature tasks operation with 1 millimeter precision.
Screen Printing Equipment Control System Design Based on PLC
Authors: Yuan Yun Long , Cheng Hong
Published: September 2013

For the traditional operation mode of high strength, low efficiency in the process of the plastic ruler screen printing, the powerful PLC is used as the control core, the automatic PLC control system is developed, and the reasonable programming skills are applied so that the two institutions can work in parallel, which greatly improves the production efficiency. At the same time, sophisticated sensors are used to detect each action execution state so as to ensure that work is reliable with stable performance. Through actual production test, the printing speed has reached the capacity of 28 rulers on average per minute, and has achieved the good production benefit.
Intelligent Solar Tracker
Authors: Fahim Shaikh Mohammad , Ahmed Maruf , Mahbub Ahmed Rayhan
Published: September 2013

On the verge of exhausting fossil fuels, solar energy is the one of best options for the primary source of energy as it is renewable, eco-friendly and safe to use. An intelligent solar tracker will attempt to navigate to the best angle of exposure of the sun ensuring that the maximum amount of sunlight strikes the panel throughout the day. The main reason for pursuing this paper is to establish the idea that a tracker aided array of PV modules produces more power over a longer time than a stationary array with the same number of modules.
Distributed Numerical Control Strategy for Error Compensation on CNC Machine Tools
Authors: Xiang Si Tong , Shen Mu Wen , Yang Jian Guo
Published: September 2013

A distributed numerical control (DNC) strategy for error compensation on Fanuc and Siemens CNC machine tools is proposed. A DNC network is built in multi-Fanuc CNC machine tools and the error compensation of all the machine tools is realized simultaneously. A human machine interface (HMI) is developed for Siemens 840D CNC machine tools, error components are decoupled in the X, Y and Z directions and they are compensated by 840Ds own function of thermal error compensation. Experimental verification is conducted and it proves that the proposed DNC strategy for error compensation is an effective and precision manner to improve the accuracy of machine tools.
Comparison Precision of Oil Film Thickness of a Hydrostatic Bearing by Using Different Controllers under External Load
Authors: Shih Ming Chang , Shie Jen Sheng
Published: September 2013

This paper describes a hydrostatic bearing to maintain the oil film thickness, which integrates the hydraulic servo control technology. This study has designed the different intelligent nonlinear controllers by using a non-contact displacement sensor to feedback the oil film thickness of the bearing. This study proposes a fuzzy controller, a self-tuning fuzzy controller and a self-tuning fuzzy sliding mode mechanism to modify the output scaling factor and adds a dead zone compensator to achieve a constant oil film thickness. Finally, the experimental results are used to verify the feasibility and practical implementation success of this study.
Model Predictive Controller for the Flight Control of Ornithopters
Authors: Ridwan Abdur Raquib , Farazi Md Moshiur Rahman , Islam Kazi Khairul
Published: September 2013

The versatile and smart feature of MPC is the ease that it can work with MIMO plants, whereas adaptive PID controller is very difficult to implement and also provides unsatisfactory results unless updated to a rather complex controller by incorporating intelligent algorithms such as Particle Swarm Optimization, Genetic Algorithm and Neural Network. In this paper we present a novel but simple Model Predicative Controller for the Flight Control of Ornithopters. The performance was evaluated for the MISO and MIMO setup for almost all possible cases of various operating conditions resulting not only in faster response but also eliminating overshoot. The results obtained from the use of Model Predictive Controller for the flight control of the Micro Arial Vehicles shows comprehensively that MPC can be used as the future means for the control of these sophisticated and very complex ornithopters.
In-Vehicle Test Equipment of Construction Machinery Operating Status Based on ARM
Authors: Ren Yan Xi , Tian Rui , Liu Yu , Yang Hua
Published: September 2013

This paper deals with the testing, isolating and diagnosis of construction machinery. Subsequently, the analysis of operating status, faulty mode and running parameter is carried out. The equipment implements the detection, processing, storage and alarming of the operating status parameters, such as temperature of cooling system, oil temperature, oil pressure, engine rotation speed, oil temperature of torque converter as well as oil level of sump and etc. Meanwhile, the real time fault alarm and historical data analysis results can also be performed and illustrated by vivid graphical interface. The embedded ARM microcontroller, which is the core module of the system, manipulates the data acquisition of operating parameters for the construction machinery. Application software of ARM chip processes the operating status parameters and accomplishes alarm and control operations under failure pattern of the machine. The failure data can not only be displayed and alarmed synchronously, but also can be stored for further fault analysis. The equipment can record various types of operating parameters, and is applicable to many different types of engineering vehicles.
Detection and its Application of Real-Time Rotor Position with High-Precision for Switched Reluctance Motor Drive
Authors: Cai Yan , Wen Yan Bin , Wang Chen Hui , Fan Shao Xiong , Jiang Wen Tao
Published: September 2013

It is very important to detect the accurate rotor position of switched reluctance motor (SRM) for a high-performance switched reluctance motor drive. And, there are two main factors to influence SRMs rotor position detection, which are the accuracy of the position signal and the controllers real-time response. It cant meet the accuracy requirements to detect shaft position information by opto-couplers, so absolute encoder is used to produce the high-precision rotor position signal. Moreover, the all-digital controller based on DSP and CPLD achieves the real-time detection and applications of high-precision rotor position signal on SRM, with their strong ability on data processing and hardware logic describing. Due to adopting high-precision rotor position detection and control, it carries out successfully and improves the system performance. The experimental results show that the design is reliable and effective, which has great significance for the establishment and realization of high-performance SRM drive.
Passive Movement Modeling of a Woodpecker Robot
Authors: Zhang Kai Yan , Xu Yong
Published: September 2013

This paper studies complex nonlinear dynamic behaviors of a woodpecker robot system which can only operate in the presence of friction as it relies on combined impacts and jamming. The woodpecker robot can periodically move without any drives and controls based on self-excited vibration principle. The whole time histories of the dynamic parameter simulations in successive periods indicate that the robot is able to achieve cyclical, stable passive movement.
The Controller of DFIG Power Fed into the Grid Basing on the Rotor Similar Signal Method
Authors: Trong Thang Nguyen , Tien Ban Nguyen , Thanh Hai Nguyen , Hoang Hai Nguyen
Published: September 2013

This paper presents and analyses characteristics of the excitation control of DFIG connected to the grid basing on the rotor similar signal method. It also identifies the control object and then proposes the controllers of the active power and the reactive power of DFIG fed into grid. There are two PID controllers used to independently control the active power and the reactive power. The parameters of the PID can be changed and adjusted by the fuzzy tuner to improve the quality of system. Basing on this control system, the quality of the system is good; such as time transition and time response of this system are very small in comparison with those of the system of previous researches.
Research on Theodolite Auto-Focus Motor Control Technology Based on a Disturbance Observer
Authors: Liu Chun Tong , Zhang Yang , He Zhen Xin , Li Bing
Published: September 2013

The design of DC servo control system for focus motor is an important part to realize the electronic theodolites auto-focusing. Focus motor is seriously influenced by various disturbances, such as friction and torque fluctuation, in frequently reversing process. It is difficult to accurately locate. To solve these problems, a DC motor control method was put forward which combined the integral separation PID and disturbance observer. Based on the three closed-loop DC servo system, the integral separation PID controller was taken in position loop, in order to eliminate static error and improve the control precision. The methods of motor trajectory planning were analyzed, the 4-5-6-7 interpolation trajectory planning was used to decline or prevent the start-stop impact and oscillation. The effectiveness of the control strategy was verified by comparative simulation experiment. The robustness anti-disturbance and location precision performance is improved significantly.
Admissible Conditions for T-S Fuzzy Descriptor Systems with Non-Differentiable Membership Functions
Authors: Lin Peng , Hu Gang
Published: September 2013

In this paper, the admissible conditions (regular, impulse-free and stable) for a class of continuous-time Takagi-Sugeno (T-S) fuzzy descriptor systems are investigated. Sufficient admissible conditions for the closed-loop systems under non-parallel distributed compensation (non-PDC) feedback are proposed. This approach is mainly based on the state space division properly to make the membership functions continuous differentiable. Moreover, in order to make good use of the systems’ structural information in rules, the provided conditions are obtained through fuzzy Lyapunov functions candidate and can be formulated in terms of dilated Linear Matrix Inequalities (LMIs). Finally, the effectiveness of the proposed approach is shown through numerical example by using the optimization toolbox.
Robust Adaptive Control Based on Fuzzy Compensation for Ammunition Auto-Loading Manipulator
Authors: Li Yu Feng , Li Kui Wu , Pan Yu Tian , Guo Bao Quan
Published: September 2013

Aimed at the problems of low control accuracy and weak robustness influenced by external disturbance, friction, load changes, modeling errors and other issues in ammunition auto-loading manipulator control system, a new robust adaptive controller based on fuzzy compensation is proposed. The control architecture employs fuzzy systems to compensate adaptively for plant uncertainties to distinguish different disturbance compensation terms and approximate each of them respectively. As a result, the control system has great dynamic features and robust stability and meet the requirement that the actual motion of ammunition auto-loading manipulator quickly tracks the scheduled trajectory.
Stochastic Resonance in FitzHugh-Nagumo Neural Model
Authors: Zhou Deng Rong , Gong Jian Chun , Li Dan
Published: September 2013

Stochastic resonance is a non-linear phenomenon where the output response of the dynamic system reaches the maximum value under the joint action of a certain intensity of noises and external incentives. In this paper, the phenomenon of stochastic resonance in a FitzHugh-Nagumo neural (FHN) model is studied. For the case that the frequency of the HF signal is much higher than that of the LF signal, under the adiabatic approximation condition, the expression of the signal-to-noise ratio (SNR) with respect to the LF signal is obtained. It is shown that, the SNR is a non-monotonous function of the amplitude and frequency of the HF signal. In addition, the SNR varies non-monotonically with increasing the intensities of the multiplicative and additive noise, with increasing the delayed-time as well as increasing the system parameters of the FHN model. The influence of the correlation time of the colored multiplicative noise and the influence of the coupling strength between the multiplicative and additive noise on the SNR is discussed.
Surface Reconstruction of Stamping Parts Based on Binocular Stereo Vision
Authors: Xiang Hui Yu , Han Baoan , Huang Jia Jun , Li Zhe
Published: September 2013

In order to realize the 3D reconstruction of stamping parts surface, this paper based on binocular stereo vision principle firstly introduces the model of the binocular cameras. Internal and external parameters of camera can be obtained by binocular calibration, taking the printed circle grid centers which are on the stamping parts as feature points, and then using the disparity image obtained by HALCON to reconstruct 3D information of the feature points. Finally, use Matlab to plot out the scatter diagram of feature points and the fitting curved surface diagram.
CU-Track: A Multi-Camera Framework for Real-Time Multi-Object Tracking
Authors: Bamrungthai Pongsakon , Sangveraphunsiri Viboon
Published: September 2013

This paper presents CU-Track, a multi-camera framework for real-time multi-object tracking. The developed framework includes a processing unit, the target object, and the multi-object tracking algorithm. A PC-cluster has been developed as the processing unit of the framework to process data in real-time. To setup the PC-cluster, two PCs are connected by using PCI interface cards that memory can be shared between the two PCs to ensure high speed data transfer and low latency. A novel mechanism for PC-to-PC communication is proposed. It is realized by a dedicated software processing module called the Cluster Module. Six processing modules have been implemented to realize system operations such as camera calibration, camera synchronization and 3D reconstruction of each target. Multiple spherical objects with the same size are used as the targets to be tracked. Two configurations of them, active and passive, can be used for tracking by the system. The algorithm based on Kalman filter and nearest neighbor searching is developed for multi-object tracking. Two applications have been implemented on the system, which confirm the validity and effectiveness of the developed framework.
Analysis of Rural Power Distribution Automation Construction
Authors: Li Yu , Tang Xiu Ying , Leng Xue Mei , Xu Yun Jiang
Published: September 2013

Urbanization construction requirements of smart grid,and distribution automation is the foundation of smart grid.Because of its own characteristics of the rural power grid, the construction of distribution network is not the same of city construction. This paper from the rural development trend and its characteristics, analysis of the function of rural distribution automation system, and put forward the suitable for rural distribution automation mode from the aspects of main station system,substation,distribution terminal,communication system and feeder automation of several.
Hybrid Differential Evolution Harmony Search Algorithm for Power Economic Dispatch Problems
Authors: Xia Hong Gang , Wang Qing Zhou
Published: September 2013

In this paper, a hybrid differential evolution harmony search (HDEHS) algorithm was presented for solving power economic dispatch problems. In this algorithm, mutation and crossover operation instead of harmony memory consideration and pitch adjustment operation, this improved the algorithm convergence rate. Moreover, dynamically adjust the key parameter (e.g. mutagenic factor F, crossover rate CR) to balance the local and global search. Based on a 13 units power system experiment simulations, the HDEHS has demonstrated stronger convergence and stability than original harmony search (HS) algorithm and its three improved algorithms (IHS, GHS and NGHS) that reported in recent literature.
Research of Vision Detection System Based on Regional Morphology
Authors: Xiang Hui Yu , Huang Jia Jun , Han Baoan , Li Zhe
Published: September 2013

With the gradual development of industrial technology, visual measuring technique has been widely used in industrial field. In the automatic production, it is used in the analysis of objects characteristics, the detection of working condition and the control of quality. This paper mainly studies how the machine vision theory is applied in the practical detections, and develops the overall visual detection platform. It uses the serial port communication between VC++6.0 and Single-Chip Microcomputer to control the experimental platform. In order to realize to test the production defects, it uses the knowledge of mathematical morphology to put forward a defect detection method of production image based on regional morphology. It can realize to simulate actual production line, and has a certain development prospects for real-time detections of product quality.
Rehabilitation Management System Oriented Cloud Services Integration Technology
Authors: Ma Yun Long , Chen Xiao Hua , Liu Bo , Zhang Guo Feng
Published: September 2013

As the informationization of the medicare sector in China grows up and the sources of the rehabilitation data are distributed and multi-leveled from different centers, it is urgently needed to integrate the resources of various application systems, implement unified data exchange of the distributed and heterogeneous multiple data sources and encapsulate the data resources into various kinds of services. For this purpose, this paper puts forward the idea of SOA-based cloud services encapsulation and integrated architecture. At first, the multi-source and heterogeneity of data and the integration of information in the rehabilitation management are analyzed. Then, the cloud services encapsulation and integration technology is study to find out how to encapsulate data resources into various kinds of services, build a SOA-based cloud services platform, find a solution for the integration of multi-sourced and heterogeneous data, and meet the function extension, encapsulation and release of cloud services arising out of changing demands. At last, A case of the cloud platform system is presented to show the feasibility and effectiveness of the architecture platform.
Research on SOM-Based Query Reformulation in Emergency Decision
Authors: Huang Wei Dong , Wang Yi Zi , Liu Yin Mao
Published: September 2013

The efficiency and accuracy of professional retrieval are closely related to semantic representation model in professional field. Representing retrieval requirement accurately is very important to guaranteeing the accuracy of retrieval. In case of professional emergency field, a query reformulation model used to clearing and improving user retrieval requirement is researched. Constructing a latent semantic word space of emergency field, semantic features are clustered by using SOM, and CI index using to determining the optimal cluster boundary is proposed. On this basis, a new query reformulation method is designed. The effectiveness of model is verified by experiment.
Radiated Noise Source Localization of Hydraulic Excavator Based on Wavelet Packet Analysis
Authors: Zhang Qing Qing , Zhou Yi Qi , Fan Liang Liang
Published: September 2013

Collect a hydraulic excavators radiated noise ten meters away under set conditions, and also the relevant noises near the excavator. Analyze noise signals with wavelet packet to get the main band of energy distribution. Then calculate the two signals correlation coefficient, which identifies the muffler exhaust noise and inlet noise as the main source for right rear radiated noise.
Optimal Shape Design for Ultimate Brownie Pan
Authors: Wei Ying
Published: September 2013

Delicious food always attracts people. To choose a suitable baking pan to bake food in the oven is worth to be discussed. With reference to the relevant theory of communication networks, this paper established a regular polygon without node coverage model, and discussed the relationship between the placing mode of the pans and the utility rate of space in the oven. It concluded that the honeycomb coverage of regular hexagons in the oven has the best baking effect.
Study on Heat Conduction of Microwave Oven
Authors: Zhang Zhong Cheng
Published: September 2013

For the heat distribution problem of the baking dish food in microwave oven, we established a partial differential equation model for the unsteady heat conduction problems, and solved this model by using the finite element method. Then, we drew the figures of temperature field distribution for the circular pan and the rectangular pan at a certain time respectively. Based on the conjecture that the part of their internal circular area for the graphics between the circle and rectangle are uniformly distributed, we verified the relationship between the pan evenly heated area and the shape of the pan, then we got the maximum heat distribution area for the circular pan and the rectangular pan, rectangular pan and regular hexagon pan.
The Optimal Design of Multi-Chip White-Light LEDs for Color Uniformity
Authors: Yang Chiu Jung , Huang Chien Sheng , Jeng Ji Nan , Chen Po Wen
Published: September 2013

A multi-chip white-light modeling algorithm for high color rendering index and high color uniformity of surface mounted LED devices is demonstrated. The simulation of white-light LED model, according to the principle of additive color mixture by four color of red, amber, green, blue LEDs and using the commercial software program to perform Monte Carlo ray tracing has been developed. The simulation and experimental results show that the performance can be achieved with a number of LED chips.
Semantic Annotation and Case-Based Retrieval of Fixture Design Case
Authors: Gao Bo , Yan Yan , Ding Hong Sheng , Dong Bo , Zhang Fa Ping
Published: September 2013

In order to develop an intelligent Case-based Reasoning system and meet the need of knowledge reuse of fixture design process, ontology technology is integrated in CBR system, Fixture design domain ontology is constructed, and concepts and relations are defined and represented. Semantic annotation of fixture design case is achieved. The similarity estimation approach is presented to resolve the problem of semantic retrieval of fixture design case. Finally, prototype system based on proposed method is introduced and the information retrieval approach is proved efficiently.
Magnetic Lens Pole Piece Axial Field Distribution Model
Authors: Zhang Xiu Yan , Dong Quan Lin , Cui Yong Jun
Published: September 2013

Axial field distribution model of pole piece has a certain theory value in the design of magnetic lenses. In this paper, on the base of analyzing pole piece axial field distribution model which other authors had deduced, using the nonlinear least square method and the curve fitting tool of MATLAB software, the Gaussian model for axial field distribution is obtained. By comparing these models, the Gaussian model has higher precision and also has a certain practical reference value.
Dynamic Force Analysis of the Non-Backlash Double-Roller Enveloping Hourglass Worm Drive Based on LS-DYNA
Authors: Wang Wei Jie , He Rong , Deng Xing Qiao
Published: September 2013

To study the tooth load distribution, the stress,strength and other issues of the non-backlash double-roller enveloping hourglass worm(NDEHW) drive, a innovative method based on finite element method and LS-DYNA software is used to do dynamic force simulation analysis.The results show that the worm gearing has good transmission performance and engagement performance, the strength and stiffness of the worm gearing does meet the design requirements. All of these work will provid a theoretical foundation and practical experience for actual design and manufacture.
On the Hamiltonian Flow of Brake Hamiltonian System
Authors: Sun Da Wei , Liu Jia Rui
Published: September 2013

This paper studies the Hamiltonian flow of the brake Hamiltonian dynamical system on the symmetrical symplectic manifold. By using the transformation law of Hamiltonian diffeomorphisms and the Hamiltonian vectors, this paper describes the characteristics of the Hamiltonian flows and proves that the Hamiltonian flows are invariant under some transformations.
Design and Research of Semi-Automatic Tubing Elevator
Authors: Hui Hong Hai , Zhang Man , Zhu Duan Yin
Published: September 2013

In our country oil field workover wellhead operation process, constructors need to manipulate the tubing elevator, but sometimes they forget to bolt or too late to do it, this will produce safe hidden trouble, to this end, this paper puts forward some ideas of semi-automatic tubing elevator. Semi-automatic tubing elevator can realize automatic bolt and semi-automatic lifting pin, it not only can reduce safety hidden trouble, also can reduce the work of the bolt and lifting pin, further reduce the chance of fatigue. In this paper, the semi automatic tubing elevator is described, using Pro/E to model, and using ANSYS to carry out strength check, verifying the rationality of its structure.
The Aerodynamic Attributes and Flight Trajectories of a Tail Fin-Stabilized Projectile
Authors: Li Chun Chi , Tai Chang Sheng , Lai Cheng Chyuan , Fu Shang Min , Tsai Yen Chun
Published: September 2013

Combined with low-speed wind tunnel experiments, this study adopted computational fluid dynamics (CFD) and the MATLAB/Simulink control software to analyze the aerodynamic attributes of a tail fin-stabilized projectile and subsequently simulate its flight trajectory with four degrees of freedom under a flight condition (M) of 0.6 and an angle of attack (α) between-60° and 60°. Comparing the CFD calculation results with the revised experiment data using the Karman-Tsien Rule showed that the aerodynamic coefficients CD, CL, and CM were similar within an angle of attack between-30° and 30°. The projectile further demonstrated excellent aerodynamic attributes within an angle of attack between-60° and 60°, maintaining stable flight. Furthermore, comparing the four-degrees-of-freedom simulation results with data from the firing table showed that the maximum height difference of trajectories at varying angles of elevation (mil) ranged from 3.07% to 4.68%, and the difference in the firing range distance ranged from 0.15% to 5.72%. To reduce the costs of field testing, this study establishes a method to design aerodynamic systems, analyze and compare flow fields, and simulate flight trajectories.
Research on Floating Moment Balancing Mechanism of a Gear Pump's Asymmetric Floating Plate with a V-Shaped Groove
Authors: Wang An Lin , Zhang Xiao Lu , Shan Xue Wen , Liu Wei
Published: September 2013

Symmetrical floating plate of the high pressure and large displacement gear pump in rated conditions is inability to achieve the floating moment balance. To solve this problem, a new balancing mechanism is presented in this paper, which is asymmetric with a V-shaped groove structure on its driven side, called asymmetric balancing mechanism. Compared with traditional symmetric balancing mechanism, the floating plate with asymmetric balancing mechanism the can the coupling problem between the gear shaft and gear inner flow field through its own asymmetrical structure, so that the gear pumps internal flow field was the symmetrical distribution. According to the structural characteristics of the floating plates, Parameterized moment model based on discrete feature points was established. Theoretical analysis and experimental tests show the result , when suffered floating moment as evaluation criteria, in rated conditions, compared with the traditional symmetrical balancing mechanism one, that the balance performance of the floating plate with V-shaped groove asymmetric balancing mechanism improve by 41.42%.
Research on Co-Simulation of Driving Antiskid Control for Electric Drive Wheeled Vehicle
Authors: Liao Zi Li , Yan Yu Lin , Liu Chun Guang
Published: September 2013

In order to overcome the shortcoming as the model is too simple to reflect the whole vehicles mechanical characteristics in traditional simulation for electric drive vehicle, the method of mechanical-electrical co-simulation is put forward. The virtual model of 8×8 wheeled vehicle is constructed by ADAMS, and then the co-simulation model is built. The co-simulation experiment is taken under the working condition of accelerating on low adhesive road,the accurate of the control model is validated according to the result, which will contribute to the research on driving antiskid control for in-wheel motor drive vehicle.
Sound Quality Evaluation Control of Car Interior Noise
Authors: Li Fang , Zuo Yan Yan
Published: September 2013

According to the complexity and non-linear characteristics of car interior sound quality evaluation, the technology of BP neural network is used in sound quality evaluation. The interior noise samples from actual cars were obtained by road experiment. The subjective evaluation test of sound quality annoyance was carried out. Meanwhile, several objective psycho-acoustical parameters of these samples were calculated. The sound quality prediction model of vehicle interior noise was established based on BP neural network. Annoyance of samples was obtained by means of the prediction model and the results were compared with that obtained by multiple liner regression prediction model. The results indicate that the prediction results from BP neural network model were close to the measured values. The BP neural network model was more effective than multiple liner regression model, and it can be used effectively to the evaluation of modern car noise.
Plumpness Analysis of Indicator Diagram for Vehicle Damper
Authors: Xu Xing , Cui Zhen , Zhang Jin Chao
Published: September 2013

According to the indicator diagram of damper, the indicator diagram plumpness was proposed as a quantitative index, and its mathematical relationships with the sprung mass acceleration, suspension dynamic travel and tire dynamic load were built. Moreover, the influence of the total area on suspension characteristics was analyzed in time domain and frequency domain. The results show that, the increase of the indicator diagram plumpness can effectively restrain the variation of suspension dynamic travel and tire dynamic load, meanwhile, the body acceleration will be enlarged. Excessive indicator diagram plumpness also affects the dynamic tire load distribution in frequency domain, and it will decrease the driving security. Therefore, it should be reasonably selected from the performance indicators, which is based on the requirement of vehicle demand in the design process.
Aerodynamic Shape Optimization of a Sedan Based on Approximate Model
Authors: Yang Bo , Hu Xing Jun , Liao Lei , Yan Xu , Zhao Zhi Ming , Ye Jian
Published: September 2013

Morphing surface mesh employing a parametric model for the aerodynamic shape optimization of a sedan is presented. This study solved the problem of non-linear deformation in modeling surface morphing by volume mesh, and solved the divergence problem due to bad mesh quality, using automatic grid generation method based on CAD model, in calculation. The optimization process consists of three stages: Design of Experiments (DOE), Approximate Model, and optimization algorithm execution. The optimization process was realized by an automatic optimization system consisting of multiple software platforms. The optimal model's aerodynamic drag coefficient is 10.56% decreased though optimization, and the hood is identified as the major factor in this research.
The Factors to Influence the Friction Stir Welding of Aluminum Casting Semi-Solid Metal Dissimilar Joint between SSM 356 and SSM 6061
Authors: Boonchouytan Worapong , Chatthong Jaknarin , Rawangwong Surasit , Burapa Romadorn , Muangjunburee Prapas
Published: September 2013

The objective of this research is to investigate the effect of parameters on the microstructure and mechanical properties of friction stir welded butt joints of dissimilar aluminum alloy sheets between Semi-Solid Metal (SSM) 356 and 6061. The base metal of SSM 356 and 6061 was located on the advancing side and on the retreating side, respectively. The cylindrical pin was used as the welding tool geometry. Friction stir welded using different tool rotation speed (710, 1,000 and 1,400 rpm) and welding speed (80,112 and 160 mm/min). From investigated, the maximum average tensile strength of 175.40 MPa was achieved for the joint produced at tool rotation speed 1,400 rpm, welding speed 112 mm/min. Metallurgy and welding structures occurred of aluminum composite material will consist of two types of definition than the base metal.
Stress Intensity Factor of Different Width Plates with Edge Crack
Authors: Wang Ming Ming , Yan Ming , Zhu Xiang Jun
Published: September 2013

Aim for calculating stress intensity factor (short for SIF) of different width plates with edge crack, and the change tendency between different widths and SIF, the crack model is built by finite element software, and the SIF change tendency line with different width plates is got. It is seen from the von Mises stress cloud chart of ANSYS that the deformation of plate is effected by crack; as the decreasing of width, SIF is increasing. When the width of plate is down to 3/8, SIF is increasing fiercely, that means, the plate at this time has already reached the edge of fracture. If continue loading the stretch, the crack will be apparent on the plate. And the curvature equation is got by index decay adapting.
Simulation for Cutting Force and Temperature in High-Speed Milling of TB6 Titanium Alloy
Authors: Wu Dao Xia , Yao Chang Feng , Zhang Ding Hua , Zuo Wei
Published: September 2013

High-speed milling of titanium alloys is widely used in aviation and aerospace industries for its high efficiency and good quality. In order to optimize machining parameters in high-speed milling TB6 titanium alloy, temperature distribution on the workpiece and the tool are analyzed, and the effect of milling parameters on milling force and milling temperature are investigated. The results show that the highest temperature appears on rake face, and near to the tool tip. With increasing of cutting time, heat affected zone on tool is bigger than that on workpiece. Milling temperature is most sensitive to the variation of milling speed, next sensitive to the variation of feed per tooth, and it is least sensitive to milling depth. Milling force is most sensitive to the variation of milling depth, next sensitive to the variation of feed per tooth, and it is least sensitive to milling speed.
The Experiment Improvement of Alloy Power Spraying for Steeling Manufacturing
Authors: Wang Chia Nan , Lin Wen Chang , Tung Phung Duc
Published: September 2013

Copper tundish is used widely in continuous casting in steel production line. Tundish is coated by a special coating in the steel manufacturing. A coating experiment was developed to study the resistant of the copper material against the molten steel corrosion. High velocity oxygen fuel (HVOF) method was used to spray the alloy powder on the copper surface to form an alloy coating. However, the experiments are unreliability, waste of material and low efficiency. These would affect to the quality of the samples and spend more time and money to perform the experiment. Base on Teoriya Resheniya Izobretatelskikh Zadatch (TRIZ), this study improved the design of the experiment. After improvment, the average of alloy powder consumed per sample reduces 23.8%, and samples produced in this experiment are twice more than before. This improving will also be applied in other spraying processes.
Spiral Bevel Gears CNC Milled by Disc Cutter with Concave End
Authors: Deng Xiao Zhong , Li Geng Geng , Wei Bing Yang
Published: September 2013

In order to solve the small cutting strip width and poor surface quality problems when spiral bevel gears are CNC machined by ball-end mills£¬a machining method of face milling spiral bevel gears by using a disc cutter with a concave end is presented. Based on the researches of spiral bevel gears geometry structure, through a bigger diameter disc cutter with a concave end selected, the setting order of cutter orientation angles changed, and the functions of cutter tilt and yaw angle separated, tooth surfaces machined with big cutting strip width and no bottom land gouge can be expected. Finally, taking a spiral bevel gear pair as an example, through machining and measurement experiments, the method feasibility and correctness are verified
Study on Tacit Collusion and Low-Price Equilibrium in Auctioning Total Permitted Pollution Discharge Capacity
Authors: Rao Cong Jun
Published: September 2013

In this paper, a typical free allocation model of allocating Total Permitted Pollution Discharge Capacity (TPPDC) is analyzed, and a uniform price auction model with fixed supply by using a set of conditions and mechanism assumptions is presented. By theoretical analysising and examples validating, the conclusion can be drawn that the bidders collusion and low-price equilibrium will easily occur in this uniform price auction mechanism. So we give some improved methods based on the strategies of uncertain supply and optimized supply which can effectively restrain tacit collusion and reduce many low-price equilibriums.
Methods and Applications of Multi-Attribute Auction in the Fields of Automatic Control and Mechatronic Engineering
Authors: Rao Cong Jun
Published: September 2013

Multi-attribute auction is a kind of market mechanisms, which enable automated negotiation on multiple attributes of a deal. In order to know the research history and the newest research trends for the research on multi-attribute auctions, this paper presents widespread theoretical and applications problems of multi-attribute auctions in the fields of auction automatic control and mechatronic engineering . The multi-attribute auction models are divided into two kinds (i.e. game theory model and decision theory model). Assumptions, main ideas, and conclusions of literature related to these two kinds of models are reviewed and commented.
Modeling Method of Building Energy Consumption & Conservation
Authors: Chen Xiao Hua , Ma Yun Long , Zhang Guo Feng , Liu Bo
Published: September 2013

With the accelerated urbanization process and the improving of peoples living standard, China's building energy consumption shows rigid growth trend. Under the promotion of industrialization, the level of energy efficiency of industrial sector goes up fast, while the energy conservation potential in industrial field declines, building energy efficiency turns out to be the key to accomplish this goal. This paper analyzes in depth building energy consumption data and brings up the methods of creating the building energy consumption and conservation models. Through measurement of building energy consumption in subentry, the data of building materials, construction, equipments and maintenance are collected, and the building management & control methods are investigated as well. Based on the data collected and investigation results, the linear regression model and decision tree model are created. The models can be used to forecast the building energy consumption and analyze the dependency between each statistic. Based on the dependency and the forecast, the energy saving model is created. With the ant colony algorithm being used, the best solution of the lowest energy consumption is found.
Energy Efficiency Assessment Oriented Building Energy Consumption System Model
Authors: Ma Yun Long , Chen Xiao Hua , Liu Bo , Zhang Guo Feng
Published: September 2013

This paper analyzes the characteristics and composition of the energy consumption system of the building from the perspective of systematic energy conservation and presents the systematic framework of the consumption model. Based on the framework, the paper focuses on how to establish a building energy consumption assessment system, find the energy efficiency index system and assessment approaches, and apply the results directly into building energy conservation and emission reduction. It not only facilitates greatly the overall and efficient management of the energy consumption system of the building, but also serves as another new approach to achieve energy conservation and emission reduction.
The Design and Simulation of Stamping Processing Complete Sets of Control Line System Based on CC-Link Network and SSCNET Fieldbus
Authors: Wang Ke , Zhou Ji Ping , Xue Feng Wei , Sun Jin , Zhong Tai Sheng
Published: September 2013

Abstract. The technical requirements for sheet metal processing equipment to the complete set of on-line development. Through the analysis of the stamping processing complete sets of equipment on-line technical，provides based on SSCNET bus, PLC and touch screen and the whole on-line control scheme. On this basis, by establishing the line control system of the simulation system, verify that the design is feasible and can be used as on-line equipment operation of the real-time monitoring system. Intends to help of the manufacturing and site commissioning of the first line prototype.