bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Simulation of Two-Phase Flow in a Rotating Packed Bed
Authors: Cheng Yun , Zhang Xiao Jun , Nie Song Lin
Published: November 2012

According to the development of a new type of oil purifier——HIGEE rotating oil purifier, this paper has carried out related numerical simulations. The two-phase porous medium flow model in the rotating packed bed (RPB) was built, and by using CFD software, the distribution of the phases in the RPB which is on the condition of high gravity (HIGEE) field and the porous media has been simulated. The paper has developed the influencing rule of key technologies parameters which affect the separating efficiency of the rotating packed bed.
An Assessment of Wet Compression Process in Gas Turbine Systems with an Analytical Modeling
Authors: Kim Kyoung Hoon , Kim Dong Joo , Kim Kyoung Jin , Hong Seong Wook
Published: November 2012

Recently humidified gas turbine systems in which water or steam is injected have attracted much attention, since they can offer a high efficiency and a high specific power with a relatively low cost compared to combined-cycle gas turbine systems, and therefore they have a potential for future power generation. In this study, performance analysis of the wet compression process is carried out with an analytical modeling which was developed from heat and mass transfer, and thermodynamic analyses based on droplet evaporation. Wet compression variables such as temperature-averaged polytropic coefficient, compressor outlet temperature, and compression work are estimated. Parametric studies show the effect of system parameters such as droplet size, water injection ratio or compression ratio on transient behavior.
Instable Crack Propagation Analysis with PDS-FEM
Authors: Chen Hao
Published: November 2012

This paper studies the stability of dynamic crack propagation in a homogeneous plate with 2 parallel cracks located in an anti-symmetric manner. PDS-FEM is extended to the dynamic setting, and a method to randomly generate unbiased mesh is developed. Monte-Carlo simulation is carried out to study the crack patterns. It is shown that a solution for low and high loading rate displacement loading condition is stable or instable, respectively, since the crack pattern loses anti-symmetricity for the latter boundary condition.
Reducing the Manufacturing Cost by Using Combination Die
Authors: Kumar C.N. Ashok , Deivanathan R.
Published: November 2012

Manufacturing cost is the major factor that affects the profit of any industry or any product. Manufacturing Cost involves material, labor, equipment & tooling, quality, maintenance etc. Sheet metal forming is one of the major manufacturing processes and used for most of the products. The Die is the tooling used in the sheet metal forming. The proper design of die is important in sheet metal forming processes.
This article discusses how the Combination Die can reduce the manufacturing cost, particularly the labor cost and material handling cost. For this study, a product U Clamp is considered. The Product requires piercing, bending and parting off operations. The Combination Die is designed and fabricated for the product and tested. Data on operation time, material handling time, die fabrication cost are collected, analyzed and discussed.
Seismic Performance Assessment of a Non-Ductile RC Building Retrofitted by Steel Bracing or Fiber-Reinforced Polymers
Authors: Valente Marco
Published: November 2012

This study investigates a displacement-based procedure for the seismic assessment and retrofitting of a six-storey RC structure, designed for gravity loads without specific earthquake-resistant provisions. The procedure is based on a simplified approach using nonlinear static pushover analyses and allows to compare alternative retrofitting strategies countering different structural deficiencies. Accurate numerical models were developed in order to provide reliable predictions of the behaviour of the building identifying the main structural deficiencies. Two retrofitting solutions based on alternative strategies were proposed for the RC structure. The introduction of concentric steel bracings decreased the displacement demand on the structure, thus reducing damage in structural members. A more uniform distribution of storey drift was observed throughout the height of the building. The application of FRP wrapping increased the deformation capacity of the columns and significantly enhanced the global ductility of the structure, without modifying the displacement demand. The validity of the simplified procedure and the effectiveness of the retrofitting interventions were assessed by nonlinear dynamic analyses.
Adaptive Single Neuron PID Control with Fuzzy and Self-Tuning in Networked Control Systems
Authors: Yu Hai Chen , Shao Cheng , Zhou De Sheng
Published: November 2012

As the varied time-delay caused by the network in NCSs, the analysis and design of NCSs become more difficult. In this paper, the single neuron PID control algorithm is modified by adjusting adaptively the scale factor and learning rate of the neuron with fuzzy rulers subject to NCSs. It is observed from the simulation that the proposed method has a well dynamic and adaptive performance.
The Auto-Control of pH Value Based on Labview
Authors: Ren Guo Qiang , Xie Chang , Li Wen Zhao , Zhang Zi Sheng , Liu Zhi Qiang
Published: November 2012

Grounded on Labview platform, the grid of technology of solution pH value contributes to a new device----the auto-control technology of solution pH value. This device is easier to operate just by the parameter input in the interface. And it breaks the limit of single admeasuring apparatus, meanwhile adopts the method of picking the average value by multi-metering, which avoids the delay effect caused by solution mixing link. The Acid precipitation-Flocculation process in paper making sewage sets an example for the pH value auto-control and supports PAC control of pH value with software concept.
Structure about the Dual-Axis Speed Turntable and its’ Stability Analysis
Authors: Lu Gui Ying , Wang Yuan Sheng , Li Bo , Yu Juan
Published: November 2012

The structure and its function about a dual-axis rate turntable has been elaborated, its principle block diagram of control system is given. And its electromechanical system’s transfer function of the dual-axis rate table has been calculated and simplified reasonably based on experiments and practical situation, then a double loop control system constituted with a speed loop and a stabilization loop is got. Its’ correction link of the stabilization loop is calculated, which has a 2-order open loop transfer function. In order to achieve a suitable stability margin, the corresponding digital controller is designed, and its’ pulse transfer function response and the three-step iterative simulation results to a same sinusoidal excitation are got and compared, the same results verified the correctness of the design to the correction link.
The Detection Method of Small Shifts Based on Stationary Autocorrelated Process
Authors: Wang Hai Yu
Published: November 2012

When control charts are used to monitor a process, a standard assumption is that observations from the process at different times are independent random variables. However, the independence assumption is often not reasonable for processes of interest in many applications because the dynamics of the process product autocorrelation in the process observations. The presence of significant autocorrelation in the process observations can have a large impact on traditional control charts developed under the independence assumption. A method of monitoring little shifts in stationary autocorrelated process is discussed in this paper. At first, auto-regressive moving-average model is used to fit stationary autocorrelated process. Then, process autocorrelation can be removed by residual method, and exponentially weighted moving average charts are constructed to monitor little shifts of process mean and variance. Comparing with other methods, we can illustration that this EWMA residuals charts have better efficiency for stationary autocorrelated processes.
Turbocharged Two-Stroke Diesel Engine of Large Vessels Modeling and Simulation
Authors: Tian Zhe , Yan Xin Ping , Xiong Ye Ping
Published: November 2012

In this article, according to the work principle of turbocharged two-stroke diesel engine, the characteristic of volume method model is referenced to package the diesel engine and the packaged model is calculated. According to the Matlab/Simulink software platform, the model will be combined to form a full mean value engine model and join speed controller to control diesel engine speed. The variation of diesel engine’s various performance parameter and the dynamic characteristics based on the speed control law will be observed, which means reaching better purpose of using diesel engine. In the process of mean value engine model design, joining a scavenging coefficient and improving the excess air ratio will increase simulation precision. By means of the correlation analysis, the diesel engine models complying with the control requirements can be determined.
An Optimal Replenishment Policy for Pharmaceutical Items with Time-Varying Demand and Partial Backlogging
Authors: Huang Yin
Published: November 2012

Pharmaceutical supply chain is an extremely complex process. However, very few researches have focused on this field. Our research mainly focuses on the optimal replenishment policy for pharmaceutical items with time-varying demand and partial backlogging on the basis of deteriorating inventory theory. For this model an optimal replenishment policy is established and a numerical example is provided to illustrate the results. Moreover, some researchers often repeatedly consider the cost due to deterioration. The mistake is verified in this paper.
The Applied Research on the Internal Control Evaluation Model in Railway Vocational College
Authors: Qi Shao Qiong
Published: November 2012

Based on the characteristic of higher vocational college，This paper analyzes the present situation of internal control in railway vocational college, takes the empirical analysis of internal control by the internal control evaluation model based on fuzzy comprehensive evaluation method, and proposes the following solutions according to the internal control problems of railway vocational college: (1)improve internal control environment by strengthening the organizational construction, management level, and so on; (2) enhance control activities by improving internal account control and implementing budget management; (3)pay attention to risk management; (4)strengthen internal and external supervision.
Scheduling Optimization of Inter-City Bus Rapid Transit Based on M/M/C/N/∞ Queuing Model
Authors: Tian Xiao Yong , Jiang Hui Yuan , Zha Jin
Published: November 2012

According the characteristics of inter-city bus rapid transit in urban circle, bus scheduling model of time division is established based on M/M/C/N/∞ queuing model that it can realize the maximum profit and meet the needs of passengers. The ideas of Simulated Annealing extending are introduced to Genetic Algorithm to construct variable fitness function, and Metropolis rule is adopted to guide the optimization process of the Genetic Algorithm.
Research on Railway Passenger Service Information System Model of the Smartphone Platform
Authors: Zhang Wen Jie
Published: November 2012

Traditional railway passenger services system lacks comprehensive information, and the phone booking system for railway and railway customer service center just starting to use do not guarantee that the information is obtained in real time. For the status quo, proposed a model based on smartphone platforms of railway passenger service information system (RPSIS). Elaborated the SOA characteristic in detail, constructed one overall frame of railroad passenger service information system based on the smartphone platform using Service-oriented architecture systems integration program. Divided into the presentation layer, the business logic layer, the service layer and the integrated application system layer adopting Web service technology. Provided the package on the distributed system and the integration of the heterogeneous data. Finally gave the implementation of the system.
All-Sky Cloud Classification Based on Transparency and Texture Features
Authors: Chen Xiao Ying , Wang Min , Zhou Shu Dao
Published: November 2012

This paper proposes a new algorithm to classify the cloud of all-sky ground-based based on transparency and texture features. First, we uses the transparency to separate the single sky background and cloud foreground image, which based on the natural matting of perceptual color space method, then analysis the texture features of cloud foreground image with second moment, contrast, correlation and entropy, finally, uses BP neural network to identify the type of the cloud. The experimental results show that the algorithm can separate the sky and cloud effectively, and the cloud classification recognition rate is higher.
An Analysis of Financing Modes of Small and Medium Manufacturing Enterprises in the Environment of Supply Chain in China
Authors: Zha Jin , Jiang Hui Yuan , Wu Qing Song
Published: November 2012

The supply chain financing mode became an important factor that drives the development of the small and medium enterprises, through which they can collect more money from banks and improve the competitiveness of the whole supply chain. In conclusion, the way to solve the financing problems of the small and middle enterprises is the key issues that need to be considered by the enterprises which are core parts of the supply chains.
Study on the Feedback Information of Man-Machine Interface
Authors: Ma Xue Liang , Yu Li Min
Published: November 2012

This paper synthesizes the human-computer interaction and feedback from two aspects of the theory of in-depth research and analysis, reveals the interactive human-machine interfaces and inner relationship: human-computer interaction is a person and" contains the computer machines" effect relationship between scene depicts; and the human-machine interface is to achieve human-computer interaction forms and methods; at the same time, the system presents a new product development new thinking - interactive guide design. The design of the man-machine interface and real significance and related method were described briefly.
Almost Sure Decay Stability of the Backward Euler-Maruyama Scheme for Stochastic Differential Equations with Unbounded Delay
Authors: Chen Lin , Wu Fu Ke
Published: November 2012

This paper deals with analytical and numerical stability properties of highly nonlinear stochastic differential equations (SDEs) with unbounded delay. Sufficient conditions for almost sure decay stability of previous system, almost sure decay stability of the backward Euler-Maruyama (BEM) methods are investigated. In \cite{Wu2010} and \cite{Mao2011}, the authors consider one-side linear growth condition and sufficient small step size. In this paper, we consider the monotone condition, which is weaker than one-side linear growth condition. And we only need a very weak restriction of the step size. Different from \cite{Szpruch2010}, Szpruch and Mao consider the asymptotic stability of the numerical approximate. In this paper we consider the almost sure decay stability of the numerical solution. This improves the existing results greatly.
Multi-Class Support Vector Machine for Credit Scoring
Authors: Tang Bo , Qiu Sai Bing
Published: November 2012

The general credit scoring model is to solve the two classification problems, but in real life we often encounter multiple classification problems. This paper proposes a multi-class support vector machine, which can solve multiple classification problems in the behavior assessment model.
Research on Welding Repair for Tee Joint Crack of Final Superheater Header of 300MW Station Boiler
Authors: Niu Xiao Guang , Wang Qing , Zheng Xiang Feng , Xu Xue Xia , Fan Hui , Li Wen Bin , Feng Yan Ting , Jiang Yun Jian , Hao Xiao Jun , Ou Yang Jie
Published: November 2012

Through methods, such as microscope analysis, metallographic examination, the crack located nearby the fusion line between tee joint and outlet steam pipe of subcritical power station boiler final superheater header is reheat crack (the main crack occurred in the heat affected zone and extended along the fusion line and grain boundary in HAZ. There are many small cracks paralleling with main crack). The base metal material (12Cr1MoV) and excessive welding residual stress are the primary inducement of crack. In repair crack, the measures of reducing residual stress, such as lower welding heat input, reducing thickness of welding layer, hammer blowing, assigning reasonably heat treatment power ,lengthening holding time and so on, were taken. The welding repair succeeded greatly.
An Improved MAC Protocol for Wireless Sensor Networks in Medical Application
Authors: Zhao Wei , Gang Shi
Published: November 2012

Wireless Sensor Networks (WSNs) provide a valuable capability to autonomously monitor remote activities. Their limited resources challenge WSN medium access control (MAC) layer designers to adequately support network services while conserving limited battery power. We expect sensor networks to be deployed in an ad hoc fashion, with individual nodes remaining largely inactive for long periods of time, but then becoming suddenly active when something is detected. These characteristics of sensor networks and applications motivate a MAC that is different from traditional wireless MACs such as IEEE 802.11 in almost every way: energy conservation and self-configuration are primary goals. This paper proposes M-MAC, a medium access control protocol designed for medical wireless sensor networks. M-MAC’s centre management function offers significant energy savings by wiping off contention and keeping nodes sleeping all the time except awaking to send its Data package. All Slave Node(SN) need only communicate with a specific Master Node(MN) in a group and due to close range, routing is unnecessary. The MN acts as scheduler and when receives a Data package from a SN, it will indicate the SN how long it should be asleep and what it should do after awaking. Period is introduced as the time windows and it is divided into Frame Time. Every MN occupies a unique Frame Time and this is decided by its MAC address. Then the Frame Time separates into smaller Slot Time and it is the atomic time span for SN exchanging data with MN. Practice has proved that the M-MAC protocol is effective in our medical application and it can extend the lifetime of SN greatly
Wireless Access and Mobility Support for Automated Storage/Retrieval System and Logistics on Aluminum Profile
Authors: Zhang Yong Hui , Lin Zhang Xi , Chen Li Wen , Liang Quan
Published: November 2012

The preconditions of storage pre-schedule and real-time schedule management are wireless access and mobility support technology in aluminum profile logistic, which is vital for the automated storage/retrieval system(AS/RS) and logistics processes, such as intelligent warehousing and shipment. Understandings characters of the current wireless access technologies, applicability of networking mobility schemes, and their cooperation or compatibility with the Internet of things, decide the AS/RS and logistics structure and its whole efficiency. So the relational technologies and schemes are introduced in this paper from bottom to top according to Open System Interconnect seven layers protocols. It reveals that integration of multi-technologies was widely adopted in project implementation, which can be helpful to achieve high quality of mobile Internet access with lesser costs. Moreover, the feasibility of handover simplification and quality of service construction imply the success of schemes in design. Finally the strategic impact factors of the networking mobility support technology for AS/RS and logistics are concluded as overlapping coverage network optimization, delay tolerant network, and quality of service system based on user behavior.
Joint Scheduling and Power Allocation in OFDMA Network with Decode-and-Forward Relaying
Authors: Lv Lin Shu , Zhu Qi
Published: November 2012

This paper investigates the resource allocation of Orthogonal Frequency Division Multiplexing Access (OFDMA) cellular network with DF relaying in the downlink. A joint scheme of relay selection, subcarrier assignment and power allocation is proposed to maximize the system sum rate subject to individual power constraints and heterogeneous users' rate requirements. Since the original problem is a mixed integer programming (MIP), we transform it to a standard convex optimization by continuous relaxation and solve it via iterative water-filling (IWF) and subgradient methods in the dual domain. Beside the joint scheme, the upper bound is studied through an exhaustive bisection search. Simulations results show that the proposed scheme outperforms the traditional methods in terms of both system throughput and users' satisfactions.
Energy-Efficient Node Scheduling for Dense Wireless Sensor Networks Using Voronoi Diagram
Authors: Lin Hai Feng , Jiang Anna , Bai Di , Liu Yun Fei
Published: November 2012

A wireless sensor network consists of distributed devices which can monitor physical and environmental conditions and have a lot of applications, such as environmental monitoring, habitat monitoring, object tracking, nuclear reactor controlling, fire detection and traffic monitoring. Although it has a lot of potential applications, a wireless sensor network is highly energy constrained. Limited energy resource to the sensor becomes an obstacle for its applications and efficient usage of energy helps in improving the network lifetime. Suppose a network has a high-density of sensor nodes, there will be lots of problems such as the intersection of sensing, redundant data, communication interference and energy waste. So it is necessary to set up a management application to maintain these resources. On the other hand, a high-density network can be fault tolerant and more accurate than low-density sensor networks. In this paper, we proposed a new scheduling for sensor networks which can decide the nodes to be on or off and maintain the coverage area for the original one. This management schema may take a node out of service temporally in order to save energy. Our design uses a Voronoi Diagram, which decomposes the sensing area into regions around each node.
A Multi-Objective Optimization Approach to Product Configuration Design with the Consideration of Uncertain Information
Authors: Zhang Meng , Li Guo Xi , Yan Yue Hui , Wu Bao Zhong
Published: November 2012

The current product configuration methods can only be applied to the situation when the configuration information is specific or fuzzy. In order to address this problem, a new multi-objective optimization approach to configuration design with the consideration of several types of uncertain information was proposed. The uncertain configuration information was uniformly described with interval numbers. Targeting on optimizing the performance, cost and term of configured products, three mathematical models was established, and some adaptations were made to these models according to the interval number. A multi-objective optimization model was generated by integrating the three models. The non-dominated sorting genetic algorithm II was used to solve the model and a Pareto optimal set of product configuration schemes was obtained. A general optimum selection method was put forward based on the fuzzy set theory, and the optimization sequence of the Pareto solutions can be founded using the method. The proposed approach can effectively deal with the problem of product configuration optimization under uncertain information.
A Sub-Pixel Extraction Method for the Center of the Circular Structure from Spot Array Calibration Target
Authors: Liu Yang Chuan , Gao Xin , Xu Chuan , Fu Wei Wei , Teng Yun , Yang Hong Cheng , Zhang Tao
Published: November 2012

The imaging measurement system must be calibrated before application. In calibration procedure, sub-pixel center extraction is the crucial step for the final accuracy. In this paper, a new sub-pixel extraction method is proposed. Edge detection at pixel level is obtained using LOG operator, then sub-pixel edge detection is realized using the Facet model. Finally, the least squares ellipse fitting is operated on the sub-pixel edge to determine the sub-pixel center. Experiment on a series of simulated images indicates that this algorithm is able to realize the center location accuracy of 0.01-0.02 pixel, and meets the requirement of sub-pixel level.
Noisy Iris Segmentation with Reflections Removal Using Probable Boundary Edge Detector
Authors: Wang Min , Wang Ning , Yao Xiao Gui
Published: November 2012

Iris segmentation plays an important role in iris recognition system. Most of segmentation methods are affected by reflection spots, eyelash and eyelid etc. The goal of this work is to accurately segment the iris using Probable boundary (Pb) edge detector after horizontal-vertical weighted reflections removal. Experimental results on the challenging iris image database CASIA-Iris-Thousand with reflection spots sample demonstrate that the iris segmentation accuracy of the proposed methods outperforms state-of-the-art methods.
JointDesign of RS Coding and Byte Interleaving in CMMB System
Authors: Lin Zi Liang , Zhang Peng , Liu Lei
Published: November 2012

RS codingandbyte interleavingin CMMB systemare jointly designed based on segment processing mechanism. The proposed scheme reduces storage space so greatly that byte interleaving can be completed inside a popular FPGA chip instead of a largeexternal memory, leading to lower cost, faster speed and higherreliability.Moreover, contraposeto the segment processing mechanism,this paper gives an optimizedRS encoder, which quickens the coding rate with almostthe same hardware implementation complexity.
An Edge Extraction Algorithm Based on Morphology
Authors: Zhao Qian , Kang Guo Wei , Hou Yuan Bin , Zhao Su
Published: November 2012

The background of images often obstructs the edge extraction.A new method of edge extraction is proposed in this paper, which combines classic edge extraction algorithms with optimal global threshold and the morphological dilation and restruction. It can accurately extract edges and eliminate fake edges and filter out the background well.
CCPSO Based on PCA for Large-Scale Optimization Problem
Authors: Han Wen Hua , Chen Xu , Xu Jun
Published: November 2012

This paper proposed a cooperative coevolving particle swarm optimization base on principal component analysis (PCA-CCPSO) algorithm for large-scale and complex problem. In this algorithm, PCA are used to pick up the available particles which gathered the important information of the initialized particles for CCPSO. The Cauchy and Gaussian distributions are used to update the position of the particles and the coevolving subcomponent size of the particles is determined dynamically. The experimental results demonstrate that the convergence speed of PCA-CCPSO is faster than that of CCPSO in solving the large-scale and complex multimodal optimization problems.
A Novel Fuzzy Logic PID Algorithm for Submarine Hydraulic Rudder Control
Authors: Sun Rong , Liu Sheng , Zhang Lan Yong
Published: November 2012

According to the composition of the submarine hydraulic rudder system, the paper analyzed the different advantages and disadvantages of the rudder type, steering agencies and the hydraulic rudder control system as well as the scope of application. System steering bodies of pump control servo, variable pump displacement control system, steering control system and rudder hydrodynamic interference model were modeled. Fuzzy logic hydraulic servo parameter adjustment method is presented, and simulation analysis of the variable pump displacement control system and steering system. As the system parameter uncertainties and load disturbance, the performance impact of parameter variation and load disturbance simulation analysis.
Tribological Study of Xanthate-Containing Acetic Ester as Additives in Hydrogenated Oil
Authors: Li Chao Long , Xiong Li Ping , Liu Hong , Xiong Li Ting , Wang Wei
Published: November 2012

A novel ester derivative, dodecyl xanthate acetic dodecyl xanthate ester(DXAD) was synthesized and it’s tribological behaviors as additives in hydrogenated oil, were evaluated using a four-ball tester. Results show that the compound possesses good antiwear performance, extreme pressure capacity, and good friction-reducing property. The action mechanism was estimated through analysis of the worn surface with X-ray photoelectron spectroscopy (XPS) and Scanning Electron Microscope (SEM). The results of XPS and SEM analyses illustrate that the prepared compound as an additive in hydrogenated oil forms a protective film containing ferric sulfide and ferric sulfate compounds on the rubbed surface.
A Joint Transmitter-Receiver Adaptive STAP Algorithm of Clutter Suppression for Airborne MIMO Radar
Authors: He Gang , Bai Peng , Peng Wei Dong , Zhao Hong Yan , Su Xi , Lin Ji Fu , Wang Ming Fang
Published: November 2012

In airborne MIMO radar, distributing characteristic of clutter have some relation with transmitted waveform diversity and Waveform Synthetic Structure. In this paper , we use the predominance of Transmitted waveform diversity on airborne MIMO radar, A joint transmitter-receiver adaptive dispose algorithm is proposed, and STAP dispose is done in wave, air and time dimension for airborne MIMO radar. The result of simulations show the proposed algorithm achieved the aim of clutter joint suppression, sequentially, which increase the performance of clutter suppression on airborne MIMO radar.
Research on the Arrangement of Main Shaft Bearing in the Late-Model High-Stiffness CNC Lathe with AHP
Authors: He Chong Yu , Yin Zhi Hong
Published: November 2012

The paper provided a feasible method for selecting the scheme of arrangement of main shaft bearing. It presented the common arrangement of main shaft bearing. According to the characteristics of high stiffness CNC lathe, selecting the scheme of arrangement of main shaft bearing by means of AHP. And then, it has chosen the optimum matching scheme in the common arrangement of main shaft bearing.
Two-Objective Optimization of Drawing Mechanism Based on Genetic Algorithm
Authors: Wang Xiao Li , Wang Bing
Published: November 2012

Multi-bar linkage mechanism is one of the most important directions to the development of mechanical presses. But there are a large number of bars, so how to choose each bar size to ensure the best kinematical characteristic and to achieve longer drawing depth as soon as possible is a key to the design. This paper established kinematics mode of the eight-bar drawing mechanism by bar-group method, and deduced kinetics expressions of all bars, then developed application simulated system by Visual Basic, characterizing Windows universal interface. In addition, proposed two-objective optimization functions-drawing depth and drawing speed, and optimized the mechanism by genetic algorithm. The optimization results shows that its motion performance has been improved in a great degree.
Research of Self-Study Arithmetic on Energy Recovery Brake Pedal in Hybrid Cars
Authors: Li Jie Hui , Wang Ming Chuan , Yuan Lina , Zhang Lu Yun
Published: November 2012

This study summarizes the necessity of researching brake pedal in hybrid cars, analyzing the shortcomings in self-study algorithm of capacitive hybrid cars and puts forward the improved algorithm to brake pedal self-study, combined with capacitive hybrid cars. Braking effects with the self-study algorithm control software are proved through the experiment.
Research on a Novel Electrical Gear-Type Grating Sensor
Authors: Zheng Fang Yan , Gao Zhong Hua , Chen Zi Ran
Published: November 2012

The design scheme of electrical gear-type time grating sensor is presented for both dynamic measurement and static measurement. This sensor consists of upper layer, middle layer and lower layer. Symmetric three-phase windings are wound around gears of these three layers, respectively, and winds of each layer are staggered by 1/3 pitch. Inductance coils of sensor are embed in slots in another single layer of framework. This structure ensures that the number of pole pairs and probes is half the number of slots to realize high precision measurement with machining of low precision spatial division and low cost. Experiment results show that the accuracy of electrical gear-type sensor can achieve ±2″with multi-polygon autocollimator.
A New Design Method of Dexterous Hand Based on Power Second Distribution
Authors: Bi De Xue , Long Hai Fei , Sun Zhi Chao
Published: November 2012

This paper presents a new design method of TUST dexterous hand. With cable based transmission scheme and implementation methods, and a new designed clutch device and finger cable-drive mechanism for second distribution of electrical power, the plan of using one motor to drive a robot hand with 21 Degrees of Freedom is fulfilled. Then the prototype is machined and manufactured, and the main design propose is verified.
Digital Design and Performance Evaluation of the Rocket Engine
Authors: Hu Bo Wen , Wang Bing
Published: November 2012

In order to achieve the digital design of solid rocket motors, the MFC module of Visual Studio2010 is used for interface software programming in this paper. Beginning with the initial performance parameters, the software receives the input parameters and gives the results of grain design and its interior ballistic calculation. Given all the results, we can evaluate the performance of grain. The design cases show that the design results of the software are correct and reliable.
Numerical Simulation of Failure Mode and Crack Propagation of Marble with Pre-Existing Fissure
Authors: Song Wei
Published: November 2012

Laboratory experiments and numerical simulations, using Particle Flow Code (PFC2D ), were performed to study the behavior of marble under tri-axial loading and pre-existing fissure uniaxial compression. The laboratory tri-axial compression results of marble was analyzed, and the calibration of the micro-properties of BMP (Bonded particle model ) in PFC2D with the test data was carried out successfully. The pre-existing fissure was simulated by smooth joint contact, and the cracking propagation mode of pre-existing fissure was carried out with the calibrated BMP properties and single smooth joint contact. The simulation show that the tensile crack firstly initiated along the vertical direction to pre-existing fissure, and then gradually departs towards the direction of axial stress, and finally develops along the direction of axial during compression. The numerical simulation coincide with our understanding of fracture mechanics.
The Improvement of Pcb’S Electroplating Uniformity
Authors: Jia Zheng , Zhang Sheng Tao , Liu Dong , He Wei , Zhang Huan Wu
Published: November 2012

The uniformity of plating copper layer thickness and film clip rate is one of the important indicator of PCB’s quality, which will affect depply by electroplating. This papar think about it from the uniformity of electric field distribution, and try to make the PCB have copper coating uniformity higher than 90% and rang less than 12 m through optimization the process parameters of the core equipment in the process of copper - Tong Gang, thereby reducing the positive film clip rate, and improving the quality of PCB. The main process parameters needed to optimize in this article is the anode placement, anode length and so on
Design and Implementation for the Information Integration of Mechanical Manufacturing Enterprises
Authors: Jiang Zhuo Da
Published: November 2012

Mechanical manufacturing enterprises face numerous choices about information. In order to take full advantage of the information, the technologies and methods of implementing information integration should be carefully studied. Firstly, the developments of its standard protocols are analyzed. Secondly, the information integration of mechanical manufacturing enterprises is discussed. At last, an example is provided to illustrate the method of information integration.
Parameters Evaluation for Aero-Engine Prognostic Health Management
Authors: Bai Fang , Jin Wen Li
Published: November 2012

Prognostic health-management of aero-engine’s fleet have features with multi-source and asynchronous. Cruise engine gas temperature (EGT) and Take-off EGT have always been the focus of evaluating gas performance and predicting the remaining life. The calculation method of EGT Margin was showed based on the introduction of the definition and classification of the EGT. It analyses not only the relationships between Cruise EGT and Take-off EGT but also each other’s main functions. Meanwhile, an instance was used to explain the disadvantages of using Cruise EGT to calculate life prognostics.
Study on the Simulation Model of the Production Capacity Decision in Hydrogen Fuel Cell Vehicles Industry
Authors: Ma Tao , Chen Ming Qi , Wang Jian , Ma Ping
Published: November 2012

Effective utilization and expansion of production capacity has crucial cost implications, and arguably drives the profitability of the operation in the hydrogen fuel cell vehicles (HFCVs) industry. We develop a production capacity model for a HFCVs manufacturer decision, which is expressed by the market and the assumptions of information usage. From three factors of equipment construction, the rapid advancement of the HFCV technology and the inconsistent between the manufacturing capacity and the effective capacity, we expressed the basic mathematic descriptions of question. Then the computing model is programmed in the EXCEL interface. After the operation of the simulation, the different scenarios show that demand and capacity variability has clear impaction on the decision. The observation provides perception on the production capacity decision in HFCVs industry as capacity expansion and the cell technologies arise. Both result in different cost type and the cost of the transition. It also implicates that not the computer simulation but the information technology application are important to improve the industry decisions.
Lightweight Design of the Truck Side Framework
Authors: Li Jun , Teng Ying Xiang
Published: November 2012

For the vehicle, lightweight means low fuel consumption. and small quantity of exhausted gas. In this paper by using the finite element method, the author established the model of the truck side framework. After meshing, exerting constraint, loading and calculating through finite element analysis software,the author obtained the deformation of the component. By researching changes of the stress and strain in X, Y, Z three directions of the component,the author obtained chart of the stress and strain. By using the method of arithmetic, the author defined the internal dimension as design variables, the equivalent stress and the deformation as the state variables, and quality as the objective function to get the lightest side wall frame of the vehicle on the premise of warranty of the intensity and stiffness.From the result, we can see the framework after optimal design is still very strong to resist the stress and the deformation.
Synthesis and Performance of a Modified Polyether-Type Superplastizer by Hydroxypropylmethyl Cellulose
Authors: Fu Xin Jian , Wang Wan Hui , Zhang Zhan Ying , Zhao Hong Yi , Zhu Hua Yu , Zhu Kong Zan
Published: November 2012

Propylmethyl cellulose monoester of maleic acid (MAPMC) was synthesized with Propylmethyl cellulose and Maleic anhydride. A modified polyether-type superplastizer (PES) was prepared from ally polyoxyethylenether, Maleic anhydride, acrylic acid and MAPMC through a free radical polymerization. MAPMC and PES were recorded by FTIR. The fluidity of cement paste were investigated, the hydration process of cement for PES were characterized via Hydration Heat Tester. The results indicate that PES superplastizers can improve the fluidity of mortars and more capable of preventing slump loss, the hydroxy group of PES has no negative impact on cement hydration .
Identification and Elimination of Gross Error in Petrochemical Enterprise
Authors: Zhang Qing Xin , Zhang Shan Wei , Zhu Cui Yu , Tao Yong
Published: November 2012

The improved MT-NT combination method has solved the issue of failure or interrupted of solving when it is used in the Petroleum chemical enterprise production process. In this paper the judgment of the variable coordination credibility was added, corresponding processing was made in the measurement, and a more cautious handling was taken on the measured variable that may cause significant error. The experimental results show that this method is more suitable for application and actual production process. The MT-NT combination method has a higher accuracy and integrity in the detection of significant errors, with the advantage of both eliminating the defect of missing appreciable error and improving the calibration results. As a result, the method is more suitable for application and actual production process.
Temperature and Humidity Detection System Based on Power Line Communication
Authors: Zhang Jian Qiang , Chen Dan Ya , Huang He , Lu Yun
Published: November 2012

Introduction of a intelligence control system of remote temperature & moisture adjustment based on single-chip computer. It explains hardware flow diagram, module structure and system software process flow diagram based on principle of power line carrier transmission and humiture control. With STC12C5404ADsingle chip computer and DHT21 as main control chip and humiture collection chip, the system hard ware is characterized by efficient and strong capacity of resisting disturbance compare to traditional humiture checking system.
The Importance of the Plane Digital Assembly Site Supply Chain Manufacturing Process Management and Control
Authors: Mei Lin , Wang Xi Liang
Published: November 2012

Airplane assembly process is a large system of multi-departments collaboration and multi-disciplines integrated application, and it would be influenced by various factors in quality and efficiency. The successful application of monomial technical must rely on the whole assembly process of effective supply chain control system and the environment. This environment from the design process to material distribution throughout the whole process of airplane assembly, and through digital measuring coupling detection model and real, completes quality closed-loop control in assembly site. The environment is a multi-level efficient integration of planning, technology and logistics, affects the overall efficiency, and plays a very important position in assembly process.
Design of a Data Collection System in Manufacturing Informationization
Authors: Jian H.H. , Xiong C.R. , Huang G.B.
Published: November 2012

This paper is based on the background of manufacturing enterprise information system. Under this case, this paper introduces a design of a data collection system that is transparent and controlled by the host computer. It uses a data acquisition system software design model which will help in speeding up the development of the system, reducing maintenance costs as well as improving data collect velocity. This paper describes the data acquisition system based on ARM hardware platform, its software framework and design process.
Design of Profibus-DP Slave Station Based on DPRAM
Authors: Chen Zai Ping , Lu Xing Ji
Published: November 2012

Profibus-DP fieldbus has been the research focus in the field of industrial automation and control, and there’re kinds of relevant products. The slave station, one of the products used in connecting the master station and the industrial units like frequency converter, sensor and meter and so on, is the key technology now researched. A design of Profibus-DP slave station based on DPRAM is proposed in this paper. First, a overall design of hardware for the slave station is showed. Then, the design for the core module of the slave station and the user interface are mainly expounded. In the end, the design of the software for the slave station is proposed, and the connection between the industrial units and the Profibus-DP master station is realized.
Max-Max Based Internal Model Control Method for Multivariable System with Time Delay
Authors: Quan Ling , Zhang Hai Long
Published: November 2012

Multivariable system with time delay and coupling widely exist in industrial which may destroy the normal work of control system. An unconventional internal model controller design method will be introduced in this paper. The closed loop system can be decouple by calculate the inverse of transfer function matrix and the optimal diagonal decomposition matrix. Finally, this method was applied in a multivariable system with different time delays, the simulation results can show the effectiveness of this method.
A New Control Method for Fermenter Temperature
Authors: Zeng Guang Hui , Gan Yan
Published: November 2012

A new control method based on least squares support vector machine (LSSVM) and model predictive control (MPC) is proposed for the control of fermenter temperature. Existing PID control doesn’t consider the model of controlled object, so it tends to bring steady-state error. The proposed method utilizes LSSVM to obtain fermenter temperature’s model and then uses it to implement MPC. The simulation results show that our method has better control performance than traditional PID control
Polishing Optical Glass by Mechanochemical Machining
Authors: Wu Kun Ling , Lee Hsin Min , Jheng Kai Yu
Published: November 2012

This study examined the surface defects and surface roughness of optical glass polished by mechanochemical machining. BK7 optical glass material was polished using cerium oxide (CeO2) solutions of different concentrations and temperatures. During machining, the optical glass specimen was placed between the ceramic working ring and the polishing pad. The effects of slurry concentration and temperature, polishing time, rotational speed and axial load on the surface roughness were examined. Significant improvement in surface roughness could be attained by polishing with CeO2 slurry of 95。°C. Both SEM and AFM images of BK7 polished under conditions: slurry concentration, 15%; slurry temperature, 95。C; rotational speed, 40 rpm; axial loading, 6 kg; and polishing time, 8 min show that the optical glass specimen surface had high transmittancy and became smooth with all scratches removed. The best mechanical properties in terms of Young’s modulus of elasticity and hardness were obtained by polishing with CeO2 slurry of 60。C. Although better surface roughness can be attained with further increase in slurry temperature, the enhanced reaction under high slurry temperature undermined the mechanical properties of the glass specimen.
Two DOF Parallel Robot Design and Dynamics Simulation for Quick Picking
Authors: Bi De Xue , Guo Chao Zhuo , Zhang Xu Man
Published: November 2012

This paper presents a new design approach of parallel robot for quick grasp based on parallelogram mechanism，and derives the dynamics model. Using SimMechanics toolbox and simlink toolbox in Matlab Software, and guiding the three dimensional solid model into it, the dynamics simulation and control on two DOF parallel robot is designed and studied. The experimental results show that the design mechanism obtains the anticipated requirement.