bluuebunny/crossref_metadata_2025 huggingface dataset:
Weak Signal Detection of the Crude Oil Moisture Content by Electromagnetic Conductance Method
Authors: Chang Li , Qu Yuan
Published: March 2013

The effective conductivity constant of crude oil different moisture content is different, the paper presents a weak signal of µV level detection method in crude oil moisture detection outside pipeline with electromagnetic conductance method. The paper describes the measurement principles, system structure, working process and theoretical analysis exactly. Electromagnetic conductivity measurement method has important practical value for mastering the crude oil amount in wells and subsequent processing of crude oil. Utilizing the detection circuit for crude oil moisture measurement has advantages of high measurement accuracy, high measurement speed, intuitive display and easy operation, which has good measurement results.
Marine Rader Oil Spill Network Monitoring System Architecture
Authors: Xu Jin , Li Ying , Li Bo , Feng Hai Yang , Yu Dao Tao
Published: March 2013

Oil spill accidents occur constantly with the rapid development of marine resources exploitation industry. Based on the offshore oil rigs hardware conditions of Sinopec, including radars and wireless network stations, this paper puts forward a architecture mode of oil spilled network monitoring system. This system can monitor the oil spill information of offshore oil rigs and provide bases for tracing sources, handling pollution and identifying responsibility of oil spilled accidents.
The Detection of Heavy Metal Ions Based on Screen-Printed Carbon
Authors: Liang Fang Hui , Liu Jin , Zhang Guang Lei , Kang Yan Qin
Published: March 2013

Abstract: Heavy metal ions have great hazard to human beings. The development of low-cost, mass-produced electrochemical sensors based on screen-printing technology has attracted considerable attention in recent years. In this paper we fabricated the Screen-printed carbon electrodes(SPCE) and realized the simultaneous detection of heavy metal ions(Cu,Pb,Zn) complied with the use of differential pulse anodic stripping voltammeter(DPASV) and optimized the detection conditions. The electrodes had satisfying sensitivity and precision, the detectable concentration reached ppb level
An Integrated Navigation Method Based on SINS/DVL-WT for AUV
Authors: Liu Qiang , Xu Xiao Su , Han Bo
Published: March 2013

The strapdown inertial navigation system (SINS) is becoming a commonly used navigation method now for underwater vehicle. But according to its principle, the positioning error of SINS accumulates over time. Therefore, we should use other navigation means to enhance its accuracy, robustness and sustainability. The Doppler velocity log (DVL) is an available and reliable means. By the speed combination, the performance of SINS will be improved significantly. But when the DVL is working in water-track mode or we use relative log, we shouldn’t neglect the influence of ocean current. Together with real-time current estimation, DVL water-track (DVL-WT) assisting SINS is included in the paper. The simulation results show that DVL-WT assisting SINS can provide more accuracy order of magnitude than pure SINS.
The Modeling and Magnetic Simulation of Resistance High-Voltage Divider Based on AutoCAD and Maxwell
Authors: Song Jian Kang , Lv Dan , Zhang Huang Hui
Published: March 2013

Due to the complexity of the high-voltage experiments and the influence of unknown stray capacitance, the completed high-voltage divider is not a patch on it has been planned. The solution of the leading ANSOFT based on physical prototype could simulate and verify the design with lightning speed and perfect accuracy; but its own modeling function is too limited to meet the engineering modeling demand well. With the powerful parametric design capabilities, the modeling software AutoCAD could simulate complex form. A combination of CAD and ANSOFT is proposed in this paper: at first make 3-D model of the high-voltage divider based on AutoCAD, then by the interface between them, the model is imported to the Maxwell to simulate the magnetic field distribution, which is the finite element analysis software of static-magnetic field. According to the results, this method could effectively improve the modeling speed and quality, and simplify the analysis workload.
Research on the Calculation Methods of New Wharf Structure
Authors: Liu Ming Wei , Chen Yu , Zhang Xiao Long , Liang Hao
Published: March 2013

With the development of shipping business, the original inland-river wharf structures no longer adapt to the rapid development of inland-river shipping. New wharf structural types become more and more important. In this paper, we put forward five new structures of wharf including new slope structure, caisson structure, frame piers wharf, overhead vertical wharf and crane structure. We analyzed the merits and faults of each type, and then proposed calculation method of structure.
Regularized Lattice Boltzmann Simulation of Laminar Natural Convection in Entrance Region of 2D Channels
Authors: Basha Mehaboob , Nor Azwadi C.S.
Published: March 2013

This paper presents a numerical study of incompressible laminar natural convection in entrance region of two dimensional vertical and inclined channels using regularized lattice Boltzmann Bhatnaghar-Gross-Krook method. Individual distribution functions with lattice types D2Q9 and D2Q5 are considered to solve fluid flow and thermal fields, respectively. Rayleigh number and inclination angle are varied from 10e2 to 10e6 and 0 to 60°, respectively. Distribution functions are introduced to mimic Bernoulli’s equation for calculating pressure at the inlet. Predicted Nusselt numbers are compared with Nusselt numbers correlation. Averaged Nusselt numbers compare well with Nusselt number correlation of Bar-Cohen & Rohsenow.
Synthesis and Morphology of ZnO Films Prepared by Magnetron Sputtering
Authors: Her Shiuh Chuan , Chi Tsung Chi
Published: March 2013

Zinc oxide (ZnO) thin films were deposited on glass substrate by Radio frequency (RF) magnetron sputtering. The effect of substrate temperature on the microstructure of the ZnO films has been investigated. Crystal structure and surface morphology of the films were examined by X-ray diffraction (XRD) and atomic force microscopy (AFM). XRD patterns and AFM images show that the crystallinity and grain size are increasing with the increase of substrate temperature.
Observation of Crack Initiation Direction around Inclusions in SUJ2 under Single-Ball Rolling Contact Fatigue
Authors: Hazeyama Shintaro , Rozwadowska Justyna , Kida Katsuyuki , Santos Edson Costa , Honda Takashi , Kanemasu Kenji , Shibukawa Takuya
Published: March 2013

A newly developed single-ball RCF testing machine was used in order to investigate crack initiation direction within SUJ2. From empirical data, it was found that the distribution of crack initiation direction at N = 1.0x106 cycles is very close to that at N = 1.0x107. This means that the cracks that do not cause failure stop growing by 1.0x106 cycles. Some cracks however continue to grow towards the surface, at an angle of 135 degrees.
Quantitative Research on Strength Characteristics of Phosphogypsum Consolidation Materials
Authors: Hou Jiao Jiao , Mei Fu Ding , Mei Zhi Heng
Published: March 2013

To established an strength factor model of PCM (Phosphogypsum Consolidation Materials) innovatively based on tests and mathematical methods of factor analysis whose influences to strength performance were quantitative analyzed. To build a mechanism schematic diagram about the mineral formation of PCM which visually analyzed its internal mineral formation mechanism. Making use of ESEM (Environmental Scanning Electron Microscope), the micro mineral structures about three typical kinds of PCM in different gray sand ratios were compared and analyzed, and focused on the micro quantitative analysis on the C-S-H gel in order to elaborate the relevance between microscopic mechanism and strength mathematical factor model.
Analytical Solution of Thermal Stresses in a Functionally Graded Solid Cylinder within Parabolic Continuous Grading
Authors: Ozturk Ali , Gülgeç Müfit
Published: March 2013

This paper presents analytical solutions of the thermal stresses in a functionally graded solid cylinder with fixed ends in elastic region. These thermal stresses are due to the uniform heat generation inside the cylinder. Material properties of the functionally graded (FG) cylinder vary radially according to a parabolic form. The material properties are assumed to be independent of the temperature which are yield strength, elasticity modulus, thermal conduction coefficient, thermal expansion coefficient and Poisson’s ratio. The solutions for the thermal stresses are valid for both homogeneous and functionally graded materials.
Composite Model for Time-Relative Compressive Strength of Recycled Coarse Aggregate Concrete
Authors: Yang Bai Liang , Wang Wei , Chi Xu Chao , Bai Wen Hui
Published: March 2013

The compressive strength development process of recycled coarse aggregate concrete (RCAC) directly affects the safety of the engineering structures, which is an important research topic in the concrete mechanics. According to the statistics of the experimental results, the development mechanism principle of the compressive strength of RCAC gradually increasing with curing time was analyzed. The mathematical property was introduced to reveal the defects of the traditional hyperbolic model of the time-relative compressive strength (TRCS), and to point out that the mathematical nature of the ideal TRCS model should have. A new CES model was presented for TRCS. The mathematical analysis shows that the hyperbolic model is a special case of the CES model, and in another hand the CES model overcomes the defects of the hyperbolic model.
The Quantization of the Structure of Fisheyes via Homology Method
Authors: Kazuaki Nakane , Mizobe Koshiro , Santos Edson Costa , Katsuyuki Kida
Published: March 2013

Martensitic high carbon high strength SAE 52100 bearing steel is one of the main alloys used for rolling contact applications where high wear resistance are required. Due to its high fatigue strength, SAE 52100 is recently being used not only for the production of bearings but also shafts. In this work, quenched SAE 52100 steel fatigue strength under rotating bending was investigated. Especially, we focus on “fisheye around inclusion” where the fatigue crack starts. Quantitative evaluation of its optical micrograph has not been enough carried out. In order to develop easy evaluation method for the fisheye area, we apply homology technique to the optical observation.
Motivation to Invest in Advanced Manufacturing Technology
Authors: Hynek Josef , Janeček Václav
Published: March 2013

This paper presents selected results of postal survey focused on advanced manufacturing technology adoption and utilization that was carried out in the Czech Republic two years ago. We have narrowed our focus on motivation of managers of manufacturing companies to invest in modern technology here. We believe that the most important motives are strongly linked to potential benefits that are associated with particular technology and that is why we have studied various benefits of advanced manufacturing technology and we put it into context of the problems the managers have to face nowadays. Our results show that from this perspective there are many good reasons to invest in modern technology.
A Service-Oriented After-Sales Services System in Mechanical Engineering Industry
Authors: Lu Shu Ping , Shao Kuei Kai , Luo Kuo Shu
Published: March 2013

This paper presents a service-oriented After-sales services system in Mechanical Engineering Industry. Typical After-sales services include status tracking services by customers, customer services, assignors and assignees. Therefore, the proposed After-sales service tracking management system work in the progress from the case study is conducted. Our system can connect with other service-related systems, such as enterprise content management repository system and business process management system. The After-sales services system is developed by consulting and visiting the machine tools manufacturers.
Research on the Development of the Coal-Electricity Integration Manufacturing Industry
Authors: Wang Wei Jun , Lu Guang Ming , Liu Tong , Wang Min Nan
Published: March 2013

In the manufacturing industry of the Coal-Electricity integration, due to the high-level of coal price, thermal power enterprises are in severe situations currently. This paper analyzes the relationship between the coal manufacturing industry and power manufacturing industry in China, and points out that coal-electricity integration is one important way to develop China's power industry. It also makes a comprehensive analysis and evaluation on the advantages and disadvantages of coal-electricity integration manufacturing industry. Thermal power enterprises should estimate the coming risk in the process of coal-electricity integration, and spare their efforts to improve the adaptability, thereby enhances the comprehensive ability to resist risks.
Efficient Inline Deduplication on VM Images in Desktop Virtualization Environment
Authors: Zhao Guo Yu , Tang Hao Fu , Xiao Li Min , Li Xiu Qiao
Published: March 2013

Enterprise service is transforming from traditional physical computing nodes to virtual machines which provides better isolation and more effective use of computing ability of the hardware. However, the widely deployment of virtual machines also increase the pressure of storage significantly with the fact that each must has at list one multi-gigabytes image file to store. To address the high pressure of storage from virtual machine images, we developed a user level inline deduplication file system with Content Addressable Storage (CAS). We use the open-source framework FUSE to encapsulate the deduplication process so as to achieve portability and flexibility. Compared to an ordinary file system without deduplication, we show that our file system can save at least 30% of space of single VM image and even more of multiple VM images while achieving considerable run time performance.
Time Optimal Control of Mechatronic Systems
Authors: Pirahmadian Mohammad Hadi
Published: March 2013

Time-optimal controllers have been developed for mechatronic systems within the model predictive control framework (mpc). The time-optimal mpc controllers realize a minimization of the settling time for any given step reference by solving a constrained optimization problem. This allows to take into account system constraints as e.g. actuator limitations. One of the main challenges in this approach is solving the optimization problem within a few milliseconds such that sampling frequencies in the range of 100 hertz and more are feasible. These controllers are developed for applications which do not perform repetitive tasks but for which minimization of settling time is nevertheless crucial.
Adjustment Mechanism of Node Transmission Power
Authors: Li Hong Sheng , He Ning Hui
Published: March 2013

As to the power control protocol, in the CPC protocol each node uses the maximum transmit power choosed by all network nodes; the communication consumption of IPC protocol is smaller, but each node is using its own definition of transmission power, two-way link between nodes in the network can not be guaranteed. The sent power control based on data transmission can resolve the defaults of CPC and IPC.
Research on Signal Transfer of GPR Used in Frontal Detecting of Tunnel Construction
Authors: Zhu Fu Min , Li Ya Fei , Gan Quan
Published: March 2013

At first, this paper discusses the unfavorable environment where a tunnel is constructed by shield machine. As a novel solution, GPR is employed to detect some undesirable obstacles or geological conditions to ensure a smooth tunnel construction. After a brief introduction about the implementation of the detecting system, this paper raises the problem about the signal transferring between the antenna and the GPR body, and between the GPR and the control computer, which are far away arranged each other in two different cabins with relative rotating motion and under a very difficult connection condition. Two signal transferring methods, by cable or by wireless, and their advantage and limitations are discussed. This paper then proposes some key mechanical and electrical modifications on the central swivel joint or some other assemblies of the shield machine to meet the requirement for the signal transferring of the GPR. As this GPR system is supposed to be long-term online detecting equipment, this paper provides a dedicatedly designed power supply to replace the original DC power of the GPR.
AWJ Cutting: The Technological Head Vibrations with Different Abrasive Mass Flow Rates
Authors: Fabian Stanislav , Salokyová Štefánia
Published: March 2013

The paper presents results of the technological head vibrations acceleration amplitude evaluation and their corresponding frequency spectrums due to changes in the abrasive mass flow at division of abrasion resistant steel on a particular work with AWJ technology. The waveforms of technological head vibrations acceleration amplitude and their frequency spectrums are evaluated for the unworn directing tube.
Woodchip Combustion Process Quality and the Amount of Combustion Air
Authors: Skok Peter , Rimár Miroslav , Mižák Jozef
Published: March 2013

The paper deals with woodchip combustion from the point of view of burning control. Control system has to ensure optimal ratio of fuel and air. There are a lot of conditions to satisfy optimization of woodchip burning. The contribution of the paper is concentrated on confirmation of fact that primary/secondary air relation can significantly reduce the among of unburned carbon monoxide.
Diagnostics of Production Systems Operation Based on Thermal Processes Evaluation
Authors: Kreheľ Radoslav , Straka Ľuboslav , Krenický Tibor
Published: March 2013

The paper describes a method of prediction values consistently transient events that can be described by a mathematical function. This article focuses on the thermal process. This allows a reasonable time to take appropriate control plot in the desired values of the variables borders. The article contains the results of the simulation and plot comparison of simulation results with the measured value.
Experimental Research and Analysis of Selected Technological Parameters on the Roughness of Steel Area Surface HARDOX 500 with Thickness 40mm Cut by AWJ Technology
Authors: Servátka Miloš , Fabian Stanislav
Published: March 2013

The paper presents a sample of wider set of new findings and recommendations from the area of the influence of technological parameters on the quality of surface of steel HARDOX 500 cut by AWJ technology and obtained by the evaluation of a large set of experiments within long-term activities of the Department of Manufacturing Processes Operation, Faculty of Manufacturing Technologies, Technical University in Košice, aimed at the diagnostics of operational states of manufacturing systems with AWJ technology.
Diagnostics of Product by Vision System
Authors: Židek Kamil , Rigasová Eva
Published: March 2013

This article describes the vision system, which is designed for diagnostics of defects in casted products. In the first part an overview about image processing, edge and pattern recognition algorithms and current status in available free and commercial vision libraries is found. For the described task we selected open source Aforge .NET library. The next part describes common defects in casted products. Modular education system MPS 500 from Festo with conveyor and palette with plastic parts is used for simulation of production system. This system contains an industrial robot which can be used for sorting defective parts. The selected vision library is used for two level diagnostics of algorithm implementation. The first level algorithm detects position of part, its dimensions and edge disturbances. The second algorithm detects any defects inside of a part. The basic algorithm is presented only for circular shape with red color texture, but can be easily extended to other basic shapes by shape detector.
Abrasive Kind and Granularity Changes Affects to Water Jet Technology Head Vibration during Cutting HARDOX Material Thickness Alternation Process
Authors: Bicejova Luba
Published: March 2013

The submitted paper deals with studying the process how abrasive kind and granularity changes during abrasive-proof material Hardox thickness changing affects AWJ production system technology head vibration generation. The purpose of the paper are undesirable vibration possible sources diagnostics and elimination. The vibrations can affect negatively lifetime and wear of water jet technology head as well as cutting edge quality.
The Writing Principle of Activity of Individual Devices in Intelligent Production Systems
Authors: Šebeňová Silvia , Danišová Nina , Velíšek Karol
Published: March 2013

In this contribution is presented the writing principle of activity of individual devices in intelligent production systems. At present, the development of technologies is focused on automation systems where manual handling of material disappearing and replaced by manipulation of semi-automated or automated equipment. These operations are to ensure that these devices easier to synchronize automatically closed cycle. The beginning is dedicated to intelligent production systems, their definition, division and principles. In the next section is presented a possible the writing principle of activity of devices and is described different methods of this writing.
Theoretical Value of Total Height of Profile in Rotational Turning
Authors: Sztankovics István , Kundrák János
Published: March 2013

The roughness of the machined surface is determined by the kinematics of chip removal, the shaping and the geometry of the cutting edge. The change of the surface roughness in cutting done under different conditions is easy to follow examining the theoretical value of roughness characteristics. This paper examines how the extent of the theoretical value of total height of profile depends on the different technological parameters in rotational turning. Furthermore the surface roughness and roughness profile is compared achievable by rotational turning and traditional longitudinal turning (in case of radius and pointed cutting tool).
Using Methods of CBA in the Context of CSR, Focusing on the Social Projects
Authors: Mrvová Ľubica , Púčiková Lenka
Published: March 2013

The article presents findings from the evaluation of the economic efficiency of environmental investments, in relation to environmental management in the context of corporate social responsibility, and their interconnection, based on the method CBA. The CBA method is the basic pillar of the computer program CBA1.1, which was created for the needs of business practices for small and medium businesses of the evaluation of the economic efficiency of social projects. The program creates a presumption that the CBA1.1 is the rapid evaluation of a rapid assessment of the upcoming social project. It gives a clear answer as to whether the project is acceptable or not.
Clamping Fixture Design Methodology for the Proper Workpiece Insertion
Authors: Oravcová Jarmila , Košťál Peter , Delgado Sobrino Daynier Rolando , Holubek Radovan
Published: March 2013

In this paper is described the design methodology of clamping fixture with the foolproofing capability. This capability eliminates the wrong work piece inserting and positioning in the clamping fixture. This methodology includes the work piece classification by its symmetry. To work piece symmetry evaluation are used the rotational and mirroring transformations. In the explored area of symmetrical transformations interactions we put the foolproofing pins, or switches.
Multi-Criteria Function for Optimizing the Number of Workers in an E-Maintenance
Authors: Havlik Radek , Gottwaldova Alena , Manlig František
Published: March 2013

This article deals with the procedure during designing the multi-criteria function. The multi-criteria function optimizes the number of workers in an e-maintenance. The basis for defining the multi-criteria function is to gain multi-dimensional assessment knowledge of procedures, and to integrate the procedures into e-maintenance systems. These systems also include an e-maintenance system for staffing optimization. Staffing optimization is necessary as there is direct indirection between service staff members and the customers. This sort of system is intended primarily for service organizations. Service organizations on a larger scale involve more than just machinery and equipment-they involve the manufacturer and the supplier. The key is to design a multi-criterion optimization function for staff members who use special tools or specialists in their field. The ultimate goal is to limit losses and ensure costs are kept to a minimum, or even transfer onto the customer. The verification of the proposed multi-criteria function as a suitable tool for computer simulation in the manufacturing process is done in the simulation program named Witness. The simulation software is linked to MS Excel.
Supply Chain Including Sustainable Developments Elements, for the Enterprises Dealing with the Waste Management Obtained from the Mines Operation
Authors: Komar Norbert , Grabara Iwona
Published: March 2013

Waste are the product, left behind, of the mines activity in Poland. Having in mind, that this kind activity is conducted on a large scale, because coal is still the main source for polish energetic sector, it generates a large amount of waste. Which needed be to treated appropriately. This waste management (waste from mines) is a major line of the enterprise, presented in this article. Like any other, in this company there are processes that altogether create a supply chain. However, due to the type of waste and taking account the present business condition, enterprise has implemented, recently, the elements into the logistics processes, which are consistent with sustainable development conception. These elements will be described in this article together with the effects of its use in economic, environmental and social aspects
Microstructure and Mechanical Properties of Joints of X100 Line Pipe by Submerged Arc Welding
Authors: Zhang Min , Yang Liang
Published: March 2013

The microstructure, mechanical properties, fracture morphology and crystal texture of pipeline steel X100 welded joints were investigated using optical electron microscope, scanning electron microscope, tensile and impact testing machine. The results show that, the texture of X100 line pipe mainly consists of acicular ferrite and granular bainite in weld zones, the microstructure of HAZ is coarser, which lead to softening and embrittlement. The fusion line is clear between outer weld and inner weld. The tensile strength of welded joint gets to 803 MPa, which is about 94.81% of the base materials. The impact energy at -10°C is more than 120J, and the average of percent shear fracture appearance at -10°C is up to 85%, is ductile fractures.
Study on the Preparation of a New Tofu Coagulant by the Acidic Components of Schisandra
Authors: Li Jian , Wang Lu , Liu Ning , Li Chen Chen
Published: March 2013

Using the acidic components of Medicine-food Schisandra researched a new bean curd coagulant. The acid of Schisandra was extracted by ultrasonic-assisted extraction, which was better than conventional extraction. The optimum condition was as follow: extraction temperature 75°C, ultrasonic extraction time 15min, ratio of material to liquid 1:7, ultrasonic power 70%. The optimum technology was selected for manufacture of tofu with natural organic acid coagulant, which determined by orthogonal experiment design method. The concentrations of soybean milk, the addition of coagulant and temperature of adding coagulant were 1:11, 0.3g/ 100mL soymilk and 70°C respectively. Under the optimal conditions, the product was light yellow and had fragrant smell of beans and Schisandra. The study has laid a solid foundation for developing the new natural tofu coagulant.
Study of Tunnel Leakage Current Situation and Lining Structural Safety of Operating Expressway Tunnels
Authors: Zou Yu Lin , He Chuan , Wang Wei
Published: March 2013

Based on the comprehensive data collection of the status of operating highway tunnels’ leakage diseases in Chongqing area, this essay conducted statistical analysis on the leakage state of the typical tunnel with leakage disease. According to statistical rule, this essay builds up numerical simulation model and applies Finite difference method to study the security of the lining when the cracks appear in different parts and under the conditions with or without water. The results of this research can be applied to the control of the leakage disease of the tunnel in Chongqing area and maintaining in operating, and this can also provide a reference to the calculation of lining security and bearing capacity for these tunnels.
Three Dimensional Finite Element Analysis of Subway Shield Tunnel under Exsisting Bridge
Authors: Zou Yu Lin , He Chuan , Zhang Zheng , Wang Wei
Published: March 2013

One city subway shield tunnel under-passing an existing bridge is analyzed, using the method of the three dimensional finite element analysis to simulate the process of excavating the left and right tunnel to get the data of the subsidence, lateral, stress of the bridge, besides the reaction of the upper structure of the bridge when the shield machine thrusting ahead. The results of the study show that the overall settlement value of the pier is not big, but around piers on both sides, the maximum lateral come to 2.6 mm, and the maximum tension, compression stress of the bridge foundation increased by 1.07MPa and 0.4MPa, and arch structure in construction process stress adverse, it is suggested that we should reinforce the soil around the tunnel treatment to control the bridge foundation of uneven settlement, and at the same time, the process of closely monitor the situation of arch bridge.
Periodic Disturbance in Turbulent Boundary Layer Method to Study on the Mechanical Properties of the Perturbation Velocity Component
Authors: Hao Gang Li , Liang Xu Li , Zhang Shu Jian
Published: March 2013

Time-series signals of normal velocity component with different flow direction and normal position of the turbulent boundary layer which were disturbed before and after the different frequency period were made elaborate measurement in the wind tunnel with the sampling frequency higher than the correspondent smallest turbulence structure time scale,IFA300 hot-wire anemometer and TSI-1243 double hot-wire senor probe were used in the experiment. The average waveform of the period phase of the period disturbance velocity signals were extracted in the instantaneous normal velocity component signals of the turbulent boundary layer. The attenuation and distortion along the flow direction and the normal of the disturbance wave with different period in the turbulent boundary layer were made experimental research, the distribution of the disturbance amplitude of the normal velocity component with different disturbance period along the flow direction and the normal in the turbulent boundary layer were measured.
Simulation of Planar 2-DOF Manipulator Based on Virtual Reality
Authors: Cui Yu Jie , Hua Jian Ning
Published: March 2013

In this paper a physical CAD model of plannar 2-DOF manipulator is built in SolidWorks and later translated into Mtalab SimMechanics for simulation purpose. The kinematics of the manipulator is analysised in order to obtain the procedure which is used to drive the joint of the manipulator. Simulation result is obtained and it is very useful for designers to understand and grasp the performances of the manipulator.
Modeling and Simulation of Electric Drive Bulldozer Based on the Torque Control
Authors: Zhou Zhi Chao , Chen Xiao Ling , Zou Yuan
Published: March 2013

According to the power performance index of the bulldozer, the matching calculation of electric drive tracked bulldozer transmission system is put forward, including AC induction motor, reduction ratios between motors and sprockets, engine-generator. Combined with the slip rate simulation of the special operation cycle conditions of bulldozer eletromechanical transmission system based on Matlab/Simulink is performed. Simulation results show that the dynamic characteristic satisfy the requirements of the job performance of the bulldozer. The matching calculation of the eletromechanical transmission system for bulldozer proved itself to be effective and feasible.
Balance Method of Lithium-Ion Battery Pack Based on Multi-Secondary Coaxial-Winding Transformer
Authors: Zhang Man , Zhang Cheng Ning , Wang Zhi Fu
Published: March 2013

Due to the inconsistency of the lithium-ion battery pack, the active balance method based on multi-secondary coaxial-winding transformer was introduced. The control principle of the balance system was analyzed, and the energy transfer process was explained. A balance system model was established by using MATLAB/Simulink, including battery model, transformer model and SOC calculate model. The duty cycle and the frequency of the MOSFET in the primary and second side of the transformer were studied to work out the balance system control strategy. According to the simulation results, multi-secondary coaxial-winding transformer can be used to balance the batteries’ voltages, and the energy losses can be reduced by choosing high-frequency transformer.
Development and Application of Light-Weight Design of the Aluminum Alloy Wheel
Authors: Hu Jin Hua , Liu Xin Xin , Sun Hui Xue , Zhu Zhi Hua , Li Bao Hua
Published: March 2013

In order to implement the optimization design for a forging aluminum wheel, the wheel’s structural optimization design software, i.e. DWheel, was developed in this paper. DWheel was programmed based on C# and ANSYS applying the restrained variable-dimension method. The key data interface commands were introduced first. Subsequently, the software was applied on a forging wheel’s structural optimization design. The optimized wheel passed the practical testings successfully.
Analysis of the Long-Distance Pipeline Failure Modes
Authors: Wen Li Juan , Zhou Wei
Published: March 2013

The pipeline which is plugged after leaking will spend a lot of resources, therefore it is imperative to investigate safety analyzing method of pipeline. To reduce the production cost that timely test and evaluate the in-service pipeline, and take measures to extend the life span have been the key matter. To solve this problem, the article demonstrates the ultrasonic testing method. It is significant for the long-distance pipeline running safely.
Three-Dimensional Modeling of Opposed Biconical Cone Screw High-Pressure Seawater Hydraulic Pump
Authors: Wang Xin Hua , Gong Zhi Ben , Wang Li Wei , Sun Shun Wen , Zheng Gang
Published: March 2013

The rotor and stator were major components of the opposed biconinal cone screw high pressure seawater hydraulic pump, which precision of design and manufacture was particularly high, and the combining status between the stator and rotor has a significant impact on the performance of the new type pump, so the related research on above problems are carried out. In order to satisfy the demands of design efficiency and manufacture decision, a fast and simple way was presented to model 3D cone screw and bushing. Three-dimensional space Cartesian coordinates of cone screw and bushing profile with MATLAB programming were obtained according to the cone screw and bushing surface equation and the design parameters,3D curves of cone screw and bushing with MATLAB were rendered, and the feature point space coordinates were imported to Pro/Engineer so as to build cone screw and bushing solid model. Finally, making virtual assembly and checking interference on the screw and the bushing were necessary. The proposed method can make the complex 3D modeling more accurate, feasible and efficient.
A Study of the Ball-and-Plate System Driven by Pneumatic Direct Cylinders
Authors: Zhao Wei
Published: March 2013

The ball-and-plate system actuated by pneumatic direct cylinders is a typical nonlinear control system, which can be used to display the performance of pneumatic components and offer a test platform for the study of control theory. A control scheme of double-feedback-loop structure is utilized in this ball and plate system. A fuzzy-sliding mode controller is proposed according to the robust and fast response requirements of ball-and-plate pneumatic driven subsystem in the inner loop. A hardware-in-loop simulation system is established to test the trajectory tracking system. The experiment results show that the fuzzy-sliding model controller suits the robust and fast response requirements of pneumatic actuators. The trajectory tracking curves shows that the double-feedback-loop control scheme is suitable for the pneumatic ball-and-plate system.
Tooth Contact Analysis and Transmission Error Optimization for Klingelnberg Spiral Bevel Gear
Authors: Guo Chun Hua , Yang Wen Tong , Liu Zhifeng , Zhang Zhi Min
Published: March 2013

The contents of the paper cover tooth contact analysis and optimization of transmission error for Klingelnberg spiral bevel gear. First, the rolling model, tooth contact analysis formulas are derived, contact area and transmission error curve is plotted. Second, the fuzzy optimization method is established to enhance the performance of the gears meshing, the optimization parameters can be confirmed to reduce transmission error. Third, an example of Klingelnberg spiral bevel gear for the illustration of the developed theory is represented.
Response of Alfalfa (Medicago sativa L.) Bud Seedling to Saline and Alkaline Stress under Water Culture Conditions
Authors: Li Jian Feng , Zhang Shu Qing , Shi Shang Li , Huo Ping Hui
Published: March 2013

Bud seedlings were used to study short-term effect of different saline and alkaline concentrations on alfalfa root and stem growth. Two neutral salts (NaCl and Na2 SO4) and 2 alkaline salts (NaHCO3 and Na2 CO3) were mixted at 9:1 mole ratio, respectively, to imitate typical saline and alkaline environments. 8 saline concentrations: 0, 10, 20, 40, 60, 80, 100, 120 mmol/L, and 7 alkaline concentrations: 0, 2, 5, 10, 20, 40, 50 mmol/L were selected to determine the stress effects on 5-day, 2-cm bud seedlings. The results indicated that bud seedlings’ root length increased firstly and then decreased as the increase of stress concentrations. On condition of neutral salt stress, 40 mmol/L treatment showed optimum root length, which was 102% times higher than CK, with significant difference (P<0.05). Under alkaline salt stress, 5 mmol/L treatment showed optimum root length, which was 156% times higher than the CK, with significant difference (P<0.05). The effects of the stresses on stem length surpassed root length. And the inhibitory effect of alkaline salt stress on seedlings’ growth in early stage surpassed neutral salt stress.
A Novel Motion Control Method Based on Acquired Images
Authors: Li Lin , Zhang Wen Sheng , Zhu Wen Jun , Chen Ya Jun
Published: March 2013

The accuracy of motion mechanism has been one of the most important factors which affect the precision of image acquired. In order to reduce its effect, we propose a novel method. We firstly get a frame acquired as reference image, under the condition that motion mechanism’s accuracy was given. Then gain corresponding parameter information through image analysis algorithms. Finally, motion mechanism makes corresponding adjustment according to analysis above. Experiments show that this method could acquire images more effectively.
The Preparation and Performance of Gypsum-Based Composites
Authors: Zhou Shi Biao , Xiao An Guo , Chen Yong , Chen Zhen Gan , Hao Ai Ping , Chen Yuan Dao , Huang Xiao Bing
Published: March 2013

Gypsum-based composites was produced using gypsum power(cement), PVA, white latex and sawdust via pouring process. The influences of water/ cement ratio, PVA/ cement ratio and glue/ cement ratio on release time, density and impact strength of the gypsum-based composites were investigated through orthogonal experiment. The results showed that PVA strengthened obviously impact strength, and also delayed the s release time of the Gypsum-based composites. Sawdust as light filler reduced the composites density. Low content of white latex is beneficial to increase the impact strength, while high content of white latex is easy to form micelle in the gypsum crystallization process and is enclosed in crystals, which decreases the impact strength of composite materials.
Development of Ni-Zn Ferrite Based Smart Humidity Sensor Module by Using Mixed Signal Programmable System-on-Chip
Authors: Ladgaonkar Bhimrao P. , Patil Suhas N. , Tilekar Shivprasad K.
Published: March 2013

Synthesis of materials for sensor and development of smart sensor module, of promising characteristics, large adoptability and great portability, plays significant role in designing of sophisticated instrumentation. Therefore, based on an innovative technology, analogue and mixed signal VLSI design, a smart humidity sensor module is designed and presented in this paper. The composition of nano sized Nickel-Zinc ferrites are synthesised by co-precipitation and formation of single phase spinel ferrites are confirmed by X-powder diffraction. The inter-digitated sensor is fabricated by screen printing technique and implemented for sensor module development. The electrical resistance (R), measured against humidity shows exponential decrease with increase in the humidity (RH %) and supports the photonic conductivity. This nature of the sensor is considered for designing of sensor module. A programmable System on-chip, Cypress PSoC, emphasizes mixed signal VLSI technology. The sensor under investigation is interfaced to the cypress PSoC. On reconfiguring the analogue as well as digital parts a system on chip is designed. The system is calibrated to RH%. Actually, the sensor materials are exhibiting semiconductor nature. The exponential behaviour of the sensor material is linearised by deploying the features of the firmware. The present sensor module is showing humidity reading in RH% with great accuracy. It also provides linear response during humidity 30 RH% to 95 RH%. This low cost and high reliable sensor could be utilized for monitoring relative humidity different environment.
Intelligent Information Control for Air System
Authors: Zhou Jun
Published: March 2013

PID control has been widely applied in the industrial process control because of its robust and easy realization, but it is difficult to tune the parameters of PID controller, which often leads to oscillation and overshoot. Due to no repetition and random of adaptive fuzzy PID control, the authors propose a method to search for normalization PID controller parameters based on adaptive fuzzy PID control, which can be expected to have higher ability of searching for global optimal PID parameters according to the performance index of control system . The MATLAB simulation of the Adaptive fuzzy PID controller and a PID controller were carried out on the Air Conditioning System temperature. Results showed that: Response time of Adaptive fuzzy PID was 0.46 s., and maximum overshoot didn’t exceed 3.29%.The stability accuracy and rapidity of the system were able to satisfy the Air Conditioning System technical requirements.
Adaptive Fuzzy Control of Furnace Pressure System
Authors: He Xiao Song
Published: March 2013

The furnace control system of complexity working conditions is not easy to be understood, carried out a detailed analysis of this article furnace negative pressure control system, the recognition system combining known model; Combining the identification system known model and combining with matlab for stability analysis; Set in simulink negative pressure system control model. Choose adaptive fuzzy control method to realize control and realize the dynamic interference effectively suppress, attain better control effect.
Aircraft Arresting System and Auto Net Setting up Part Design
Authors: Zhong Zi Jing , Ren Lin , Shi Yu
Published: March 2013

The laser-microcomputer auto net setting up system manufactured in this paper is the control part of aircraft arresting equipment. Aircraft arresting system is important in safeguarding on airdrome, based on the analysis of its composing and principle, function and working principle of laser-microcomputer auto net setting up system are analyzed. Finally the conclusion is that this auto net setting up equipment used on aircraft arresting system can make estimation timely, fleetly and accurately, give control signal, set up arresting net, arrest aircraft and ensure landing safety when the velocity of the aircraft is fall short of secure regulation.
Single Degree Vibration Platform Self-Tuning Fuzzy PID Controller Design Based on AMESim
Authors: Chao Zhi Qiang , Li Xin Ze , Meng Ai Hong
Published: March 2013

In recent years, hydraulic simulation has become an important means to research hydraulic system, in order to enable the single degree platform vibration curve with better traceability and reach the requirement of the test, this paper represent single degree system platform stimulated by simulation software AMESim, taking the Single degree freedom vibration hydraulic system as an example, MATlab/simulink is applied to the design of the vibration platform system fuzzy PID controller. Through the comparison between the simulation test and traditional PID controller, the designed self-tuning fuzzy controller can control the platform better, with smaller overshoot, faster response, shorter adjusting time, as well as fulfill the permissible accuracy.
Influence of Pretreatment Process on Microstructure and Properties of 65Mn Steel after Subcritical Quenching
Authors: Li An Ming
Published: March 2013

Quenching and normalizing is selected as the pretreatment process. Microstructure and mechanical properties of subcritical quenched 65Mn steel are investigated when different pretreatment is used. The experimental results show that the content and grain size of the martensite in the 65Mn steel after subcritical quenched are related with pretreatment process. The mechanical properties are determined by the pretreatment process. 65Mn steel exhibits very fine martensite structure when pretreatment process is quenching. The tensile strength and hardness is 65 Mn steel with the pretreatment process of quenching are higher than that of normalizing. The mechanical properties of 65Mn steel can be improved by austenite inverse transformation subcritical quenching. Classifying number in China: TG156
Study on Application in the Teaching of Ship Maneuvering Simulator
Authors: Song Hao Ran
Published: March 2013

Ship handling Simulator system was dominated by computer technology, combined with disciplines such as ship hydrodynamics, to emulate a variety of sea and sea conditions, various types of ships and its control system, achieve the purpose of simulation training. At present, the ship manoeuvring Simulator in navigational teaching and training not only from the international shipping industry is generally acceptable, but also highly valued by the International Maritime Organization. Therefore, growing on ship manoeuvring Simulator in navigational teaching research on the application and training of the crew, ship maneuvering simulator training more rational, more realistic, more standardized.
The Fault Diagnosis Method of Mixed-Model Assembly Line Based on Dynamic Causality Bayesian Network
Authors: Cheng Jie
Published: March 2013

For timely diagnosing the faults of mixed-model assembly line, and highly eliminating abnormal the production line, the time causality relation in the faults of mixed-model assembly line was Fuzzy discretized by the introduction of fuzzy set theory, and the fault diagnosis method of mixed-model assembly line based on dynamic causality bayesian network was established in this paper. Finally, a fault diagnosis simulation system of mixed-model assembly line based on dynamic causality bayesian network was demonstrated and validated by QUEST software. It has shown the proposed method can improve the benefit of production scheduling, and provide a support for adapting to complex and dynamic production scheduling in mixed-model flow production.