bluuebunny/crossref_metadata_2025 huggingface dataset:
Automatic and Intellectualized Reconstruction of the Surface Roughness Measuring Instrument
Authors: Yuan Feng Wei , Jiang Yan , Hu Liang Bin
Published: September 2011

The automatic and intellectualized reconstruction is the important way to improve and expand the traditional instrumental function. The surface roughness is an important indicator of effecting parts and products performance. On the basis of using precision measurement technology, electronic technology and computer technology synthetically, the principle and method of the automatic and intellectualized reconstruction of JB-3C Type Surface Roughness Measuring Instrument is mainly introduced, which is to reconstruct the hardware circuit and develop function in view of the flaws that the data processing speed of the traditional instruments is slow and they can not print the curve very abundant and even that operating steps are complicated and other shortcomings. And we adopt Matlab and VC++ mix programming to gather, process, demonstrate, analyze and compute data, which has high applicability and performance price ratio.
Design of Test System for Static Parameters of Projectile and Rocket Based on LabVIEW
Authors: Cheng Xiao Lin , Zhang Ai Jun , He Yun Feng
Published: September 2011

To measure static parameters of projectile and rocket, the test system based on LabVIEW was developed. It can communicate with lower computer by serial port; calibrate sensors and centroid; control operation flow of system; test static parameters; store data and print measurement results. At last, standard object was tested, which proves that result is accurate and reliable, it can achieve requirement of high-precision, and this system has a brilliant application foreground in the industry.
Development of High Temperature Superconductor Current Limiter
Authors: Lu Jia Zheng , Zhang Hong Xian , Yang Li , Hui Dong , Fang Zhen , Li Bo
Published: September 2011

Short current limiting technology is a hot problem in power grid with short current increasing. Several short current limiting technologies are analyzed. And improved bridge-type superconductor current limiter which can limit instantaneous and steady short current is presented. Resistance-type, bridge-type and improved bridge-type superconductor current limiter are simulated. Scheme and parameters are proposed, based on which we develop a 10 kV high-temperature superconductor current limiter. In Aug.14th, short testing implements at Gaoxi 110 kV power station in Loudi bureau, Hunan Province. Later, the limiter runs in the power grid. In short testing, the limiter can prevent the short current from 3500 A (Vms) to 635 A(Vms). There is no saltation in wave. The superconductor current limiter has run six month and all indexes are well-balanced. All these can make a base for superconductor current limiter large-scale application.
PS-FB-ZVZCS PWM Converter Modeling and Simulation Based on the PID Neural Network
Authors: Xiong Sheng Zu , Shu Huai Lin
Published: September 2011

In order to overcome the disadvantage of the traditional control methods and general neural network control methods, the above two control methods which used to be applied to the PS-FB-ZVZCS-PWM(Phase-shifted Full-bridge Zero-voltage Zero-current-switching Pulse-Width Modulation, PS-FB-ZVZCS-PWM)converters modeling has been replaced by the PID(Proportional-Integral-Derivative , PID)neural network control. The first PID neural network subnet was used as the outer voltage loop control and the second PID neural network subnet was used as the inner current loop control. The output of the first PID neural network subnet was used as the reference input of the second PID neural network subnet. By the tight integration of two neural network subnets, a dual loop PID neural network control system was got. The result of the simulation which was got by MATLAB software showed the use of PID neural network as a regulator of the double close loop model was not only to achieve the nice control characteristics which are no overshoot, no static error, fast response, short transition time, good tracking performance, but also man-made regulation time was significantly reduced.
Application of Serial Communication Control in the Motion Control System
Authors: Liu Jian Qun , Wu Ji Rong , Xu Dong , Li Xiao , Huang Jian
Published: September 2011

A serial communication protocol according to motion control (MC) system data format has been developed. Based on taking management platform which can be embedded controller or personal computer (PC) as the MC data sending station and motion controller whose core is Digital Signal Processor (DSP) as the MC data receiving station, the detailed situation of how to use the data transfer protocol and the data processing method in MC system is described. Firstly, the organization format of the serial communication data frame is introduced. Then, the relevant saving format of the MC data received by motion controller is described, and the way of how to receive the MC data from serial port is designed. Finally, the whole process of data saving in RAM and data taking out from RAM by motion controller are stated. With the serial communication protocol, a control solution has been provided in the MC system.
Design of Vibration Signal Data Acquisition System for Rolling Bearing Life Testing Machine Based on Virtual Instrument Technology
Authors: Yu Guang Li , Dang Li Hui
Published: September 2011

The paper introduces the status of rolling bearing life testing machine in China first. Then, the paper mainly focuses on the design of vibration signal data acquisition system for rolling bearing life testing machine. The system is developed for a rolling bearing manufacturer based on Labview with perfect functions according to the requirement of the customer. The rolling bearing manufacturer can set up different measurement time and time interval for data record to carry out test according to the requirement of its customers. The developed vibration signal acquisition system is not subject to testing machine, which can run only that the sensors are installed on the measurement locations of testing machine. The developed system can be used for different rolling bearing life testing machine, so it has good application perspective in future.
The Portable Computer System of Wet Gas Two-Phase Flow Measurement Based on Labview
Authors: Xu Ying , Ma Ruo Shun , Fu Chun Ming
Published: September 2011

In order to measure the individual flow rate of gas and liquid of wet gas two-phase flow without separation on line in situ.a computer system for metering wet gas based on labview has been developed. In this system, a high-performance embedded computer as the core unit has been used. Meanwhile, it consists of an industrial hard disk with wide temperature,a high precision data acquisition module, an industrial 12 inch LCD with wide temperature range, a group of rechargeable lithium battery and so on. The software platform is based on labview, which can achieve signal acquisition, calculate the gas and liquid transient flowrates, display and store data, etc. The application in industrial field shows that computer system developed here has good man-machine interaction interface, high reliability and other advantages.
The Environment Temperature Simulation Research of Gyroscope
Authors: Yuan Shuai , Wang Ya Bin
Published: September 2011

The gyros are the key parts in inertial guidance systems. The working accuracy and reliability of the gyros will affect the accuracy of inertial guidance systems directly. Therefore, increasing the working accuracy is a major subject for discussion. There are lots of factors affecting the accuracy. For example, the manufacturing processes, the inner configuration, the working environments and so on. Among of these factors, the larger areas influenced by heating components on gyros, the more negative influences would be made on the accuracy of gyros. For reducing its influences on the temperature distribution on gyro, two axial flow fans are installed among the gyro system. This paper studies the formation process of constant temperature in gyro auto-controlled ontology structure and the simulation technology. The results and methods provide important theoretical and application value for the high design level in the temperature device of gyros and the working accuracy.
Research and Design of a New Control System for Internal Vibration Concrete Shaping Machine
Authors: Zheng Sheng Li , Li Guo Hui
Published: September 2011

Internal vibration concrete shaping machine which has a wide application in construction industry was used to produce floor slab with round hole. According to market research and production practice, a new control system was designed to overcome the defects of existing internal vibration concrete shaping machine. This article focused on the new control system design, including driving scheme, control system selection and program design, etc. Debugging on-line, the running of this control system is normal, and the product quality is higher than before.
Research on the Oil-Gas-Water Three-Phase Flow Experimental Apparatus
Authors: Xu Ying , Li Tao
Published: September 2011

The oil-gas-water three-phase flow experimental apparatus in key laboratory of process monitoring and control in Tianjin University is a set of indoor small experimental device, which can simulate oil wells, simulate the pipeline transport of multiphase flow and study the experiment of multiphase flow. The device includes energy power dynamic systems, measurement pipelines systems, multiphase flow test pipelines system, control valves, sampling and control system platform. The software of the control system is mixed programming between the configuration software MCGS and the Visual Basic.
Research and Application of Robotics Remote Sensing
Authors: Zhang Guo Peng , Wang Bo
Published: September 2011

The paper takes robotics remote sensing as research background. Robotics remote sensing is a newly developed research area. Compared with traditional remote sensing and robotics technology, definition of robotics remote sensing is discussed in the first part. In the second part, the paper combines the latest international and domestic research references and practical robotics application platform. It mainly studies robotics remote sensing on eight-wheeled robot RAT-1 for mine sensing, mobile robot with IR-optical sensor for gas leak detection and source localization, ambient intelligent robot for environmental surveillance, mobile robot for object localization and other hot research points. Because of its new appearance, studies of robotics remote sensing are not matured. So the paper also indicates key problems existed in each application and predicts three most possible development aspects of robotics remote sensing at last.
Research on Visible Measurement of Dispersion Spot at Four Quadrant Photoelectric Detector
Authors: He Ling Kong , Gao Yong , Ning Shu Cun
Published: September 2011

This paper presented a visible measurement method of dispersion spot at a four-quadrant detector based on digital image processing according to the problem of big measurement error and low efficiency in the existing production process used by the indirect measurement method of dispersion spot based on four-quadrant detector output signal. This method designed a visible measurement optical system and established a visible measurement mathematical model of four-quadrant detector dispersion spot, obtained the four-quadrant detector photosensitive surface and dispersion spot geometrical coordinates and size through digital image processing for the four-quadrant detector photosensitive surface and the dispersion spot, then got the adjustive parameter of out-of-focus distance automatically. The results of the experiment show that this method is intuitive and simple, measurement accuracy is improved from 0.02mm to 0.004mm and the measurement time is reduced from 15 minutes to 2 minutes.
Monitoring System of Two Levels Non-Continuous Signal of Automotive Camshaft Sensor
Authors: Tian Jin Ming , Guo Feng Yu , Gong Cheng Long
Published: September 2011

A data collection terminal for performance testing of non-continuous signal of the automotive camshaft sensor is designed, Using NI-6259 data acquisition card to connect the data of collection terminal with pc, and composed of a complete monitoring system of performance testing of automotive sensor. The system can display the maximum, minimum, average, duty cycle, frequency and frequency multiplication or not of the high level and low level in real-time. And the frequency range of the measured signal is between 1Hz and 8KHz. Compare measured data with standard data, determine automatically whether it is reasonable and save them according to their classification. The test personnel are avoided to test continuously and monitor in real-time, offsetting the lack of single function of the display of test platform and running short of features of analysis and judgment.
Automatic Positioning Closed-Loop Control Cystem Design of Linear Time Grating Sensor
Authors: Zhang Tian Heng , Peng Dong Lin , Yang Ji Sen , Wang Xian Quan , Dong Chun
Published: September 2011

A high-precise automatic positioning system for data sample of linear time grating sensor is designed. In order to achieve linear time grating sensor of data sample, improve measure work efficiency, an ARM MCU is used as a major chip to control the stepper motor to rotate. In this way, the stepper motor drives the ball screw, the moving probe of linear time grating sensor and reading head of linear grating to move synchronously. A high-precision automatic positioning of the system hardware is designed. In addition, ARM controlling circuits and stepper motor driving circuits are designed. Therefore, the special communication interface is designed for the high-precision automatic positioning system, receiving the feedback signal from time grating sensor, forming a high-precision closed loop control system, and communicating with upper computer by serial. Experiment results prove that the positioning precision of control system can reach 0.1 um.
Adopting Three-Level Inverter to Solve the Bearing Fault of Roll Forming
Authors: Li Fang Yuan
Published: September 2011

During the roll forming factory, the front bearing of AC motor was always malfunction. The problem was that there was large axial vibration and the deterioration was in the trend of rapid development. In order to make early preparations for repairs and maintenance to determine the basis for decision-making, the motor bearings were under monitoring when running. In AC drive systems, bearings are more likely to be damaged from the highly accelerated/decelerated operation and the effects of electrical discharge machining resulting from high dv/dt, which are introduced by PWM input voltage. Multi-level inverters offer better sinusoidal voltage waveform than 2-level inverters due the fact that output voltage can be formed using more than two voltage level. This causes the THD to be lower. Switching losses are reduced because switching frequency can be lower than in 2-level inverter. According the testing data analysis, bearing had been replaced with 3-level AC inverter and maintenance of the response had been decided.
A Research on the Stiction and Detection in the Control Valves
Authors: Li Sen , Zhang Chun Liang , Li Jian , Liu Jia
Published: September 2011

Stiction is a common problem in spring-diaphragm type valves, which are widely used in the process industry. A non-invasive method for detecting and quantifying stiction in control valve has been presented in this paper. Although there have been many attempts to understand and detect stiction in control valves, none of the current methods can simultaneously detect and quantify stiction. The method first detects nonlinearity in a control loop by the use of the sensitivity of the normalized bispectrum or bicoherence to the nonlinear interactions that may be present in the control error signal.If nonlinearity is detected, then controlled variable(pv) and controller output(op) signals are filtered using frequency domain wiener filter to obtain filtered pv and op signals.This work describes a model free method that can detect and quantify stiction that may be present in control valves using routine operating data obtained from the process. No additional excitation or experimentation of the plant is required.
Research on Vibration Isolating with Magneto-Rheological Damper
Authors: Xia Zhao Wang , Qi Xiao Min , Wen Hua Bing
Published: September 2011

This work presents a test model of a vibration isolation system with magneto-rheological (MR) damper, and the Bingham model to describe the dynamic process of mechanical response for the MR damper. The analytical solution of the system in passive control is obtained via the averaging method, and verified numerically. The parameters which affect the performance of the vibration isolation are adjusted appropriately; the effects of the parameter are quantitatively or qualitatively analyzed.The proposed model utilizes a method that can be employed in a variety of dynamic systems. Moreover, the model parameters have direct physical significance to the MRF damper properties.
Modeling and Simulation for Parachute Inflation Process Based on Finite Element Method
Authors: Xu Gang , Geng Ru Bo , Zhang Ning Bo
Published: September 2011

Aim at the non-linear flexible deformation characteristics of parachute, finite element analytical approach is integrated to realize the complicated time varying motion mathematical model of the parachute and implement simulation. Firstly, particle system is utilized to construct the three-dimensional geometrical model of the parachute. Then, on the basis of considering the internal force & internal air flow movement of canopy, the dynamics model during inflation process is built in the form of mass particles. Finally, through simulation calculation, the results are basically consistent with the wind tunnel test including parachute shape movement change, projection diameter change and dynamic load change rules, which the model is deemed effective and correct. The method is suitable for being applied in the engineering design of the parachute.
Flexible Dynamic Analysis of Hydraulic Excavator’s Boom
Authors: Sun De Xin , Liu Xin Hui
Published: September 2011

To study the dynamic response of hydraulic excavator’s boom under different road condition, this paper set up numerical model of excavator’s working device, then set up the virtual prototyping simulation model of excavator’s working device and simulated the flexible dynamic response characteristics of the boom based on multi-body dynamic software, RecurDyn. The results showed that, modeling and simulating method based on rigid multi-body coupling flexible multi-body dynamic modeling and analyzing technologies, reproduced the actual working conditions truly. The dynamic stress’s rule of variation provides an important method for the structure design and force analysis of hydraulic excavator’s working device.
A Wireless Human Pulse Wave Detecting System Based on LabView
Authors: Cao Xiao Yan , Lei Yong
Published: September 2011

The pulse is the most important, sensitive and reliable source of information about human activity. Pulse wave contains importantly pathological and physiological information. It has an important significance for clinical diagnosis. The system collects the pulse wave through the HK2000B + integrated pulse sensor firstly, then transfers it by the wireless module, finally sends the signal into the computer through the VISA function provided by the LabView which can realize the serial communication. On the computer, use the LabView to program, so that it can realize the pulse signal real-time data acquisition, data filtering, waveform display, storage, alarm and K value extraction and so on. It has an important meaning to promote the pulse remote and objective realization and it has a great practical value.
Investigation on Influence of Launch Depth to the Hydrodynamic Characteristics of the Cylinder out of the Tube
Authors: Liu Hai Jun , Peng Xing Zhi , Wang Cong , Wang Ben Li
Published: September 2011

The influence of different the depth to the hydrodynamic characteristics of the underwater cylinder vertical launch out of the tube was researched with numerical simulation. The finite volume method based on the multiphase model, continuity equation, transport equations of liquid mass fraction,a dynamic mesh technique and a standard tow-turbulence model are adopted to solve RANS equation in conjunction. The fluid-solid coupling problem of both movement boundary of the cylinder and multiphase flow field was solved by using numerical method. Under the influence of the gravity, the flow field affected the hydrodynamic characteristics of the cylinder was derived with the numerical simulation. Simulation results show that different launch depths affect on the trajectory of underwater cylinder and hydrodynamic. The fluctuation reasons of different pressure drag coefficient, viscous drag resistance coefficient and toll resistance coefficient were derived by analyzing simulation results.
A Micro Wireless Attitude Determination System Based on the Extended Kalman Filter
Authors: Liu Shao Peng , Zhou Zhao Ying , Wang Qiong , Guo Qi , Ma Zhi Guang
Published: September 2011

One wireless attitude measurement system based on a MEMS multi-sensor has been developed. The data from 3-axis MEMS accelerators and 3-axis MEMS gyroscopes are used to determine the pitch angle and the roll angle by using an extended Kalman filter (EKF) equation deduced from the direction cosine matrix. The attitude angles can be resolved from the EKF algorithm based on Quaternion. The system can be used in dynamic as well as static environments by adjusting the measurement noise matrix of the extended Kalman filter equation. Results indicate that system is determined with standard deviations below 5º even in high dynamics and 1º in static state. The system can collect wireless data from over six nodes simultaneously with a sampling rate up to 100 Hz. The system node measuring 22x15x10mm and weighing 4.5g contains wireless communication module, 3-axis gyroscope, magnetometer and accelerometer.
Research on Network Architecture of CSTA Based on P2P
Authors: Wang Wei Kui , Huang Qiang , Zhang Xiao Hu
Published: September 2011

The thesis puts forward the concept of Computer Supported Technical Assistance (CSTA) for the first time. CSTA is the main form for technical assistance in the information society. The process, technical feature and advantage of CSTA as well as the primary research content and the conventional form were analyzed in the paper. In order to be seasoned with the new requirement of technical assistance, the network architecture of CSTA based on P2P was discussed.
Design of Synthetic Diagnostic and Health Management of Launch Vehicle
Authors: Lv Wei Min , Song Han Qiang , Feng Jia Cheng , Jiang Shi Wei
Published: September 2011

The missile launch vehicle is the launch platform of the missile, the reliability level of it directly influences the effectiveness displaying. The goal of synthetic diagnostic and health management was researched, and the framework of synthesis diagnostic and health management system of the missile launch vehicle was designed. The module designing of the system was provided according to the different subsystem, the way of system implementation was designed through the framework of the system, the principle of sensor selection was ensured in the system, the method of monitoring parameter selection was researched in a certain degree, and the key technology and research point for the system designing were analyzed.
The Method and Application of Time Series Prediction Based Wavelet Neural Network
Authors: Pan Yu Min , Zhang Quan Zhu , Xue Peng Qian
Published: September 2011

This paper presents a research on modeling and prediction with wavelet neural network in the nonlinear time series of gas emitted. Because accurately predicting the amount of gas emitted from the mine is a very important matter for safety, this paper proposes a new algorithm of wavelet neural network model for time series gas emission prediction. The nervous cells function is the basis of nonlinear wavelets. A wavelet network composed by the wavelet basis function is computed by an expansion and contraction factor and a translation factor to reach the global best approximation effect. Which wavelet basis function has the features of extraction capabilities, self-learning neural network and wavelet transform of the localized nature. The intrinsic defects of artificial BP neural network, e.g., its slow learning speed, difficulty to determine rationally the network structure and existence of partial minimum points, are solved. The simulation results obtained show that the new prediction system has faster convergence and more accurate prediction.
Design Procedure of Robust QFT-Based Controller for Continuous-Flow Grain Dryer Plant
Authors: Mansor H. , Mohd Noor S.B. , Raja Ahmad R.K. , Taip F.S
Published: September 2011

Quantitative Feedback Theory (QFT) is a well known robust controller that deals with plant uncertainty. QFT has been applied to many industrial applications, however it never been applied to any types of grain dryer plant. Grain dryer plant prone to parameter uncertainty and needs a robust controller in order to maintain a good quality of product output. The objective of this paper is to explain step-by-step design procedure of QFT design for a continuous-flow grain dryer plant. The designed QFT-based controller is also tested and compared with PID controller via simulation. The test results showed that the QFT-based controller works better than PID controller in terms of shorter settling time and smaller percentage of overshoot for the grain dryer plant under study and at the same time insensitive to parameter changes i.e. input and output disturbances.
Based on Rotating Machinery Data Acquisition System Anti-Aliasing Filter Design and Application
Authors: Sun Hai Yan , Zhang Chun Liang , Li Sen
Published: September 2011

In this work, on the basis of the analysis of the component of traditional data acquisition system, and in view of the design requirement of data acquisition system for the process of rotating machinery testing and fault diagnosis, adopt the integrated with AD module based on the 8th -order low pass elliptic switched-capacitor filter MAX297 for filtering, thereby proposes a portable data acquisition system. And it gives the design proposal of anti-aliasing filter according to the design requirement, and illustrates the principle of filtering and accomplished the corresponding hardware circuit. And this proposal of the filter can be used to other testing and fault diagnosis systems by adjusting the sampling frequency.
Optimization of Comprehensive Assessment Parameters System for Equipment Maintenance Quality Based on Principal Component Analysis
Authors: Geng Qing Xia , Wang Sheng Feng , Zhang Hui Min , Zhang Jian , Meng Fan Qi
Published: September 2011

Testing and optimization of assessment parameters is important process for constructing general, perfect assessment parameters systems. It is emphasis and difficulty for research on parameters system for comprehensive assessment of maintenance quality to test and optimize parameters of comprehensive assessment of maintenance quality. The paper tests and optimizes parameters system for assessment of references [4] by principal component analysis method based on existing statistical data of equipment maintenance of quality management. An instructive research has done on optimization of parameters system for comprehensive assessment of maintenance quality.
Artificial Neural Network for Predicting Wear Properties of Brake Lining Materials
Authors: Han Jun Hua , Wu Qi Sheng
Published: September 2011

Many factors influence the wear of friction material performance such as formulation, manufacturing condition and operating regimes, and so on. In this paper, the wear rate variation has been modeled by means of artificial neural network, the network have been developed with all these relevant factors taking into consideration. 16 influence factors and wear rate selected as input and output respectly, 16 [10-8]2 1 is regarded as the best architecture of neural network, the Levenberg-Marquardt algorithm is used for training the network. The result shows that the model is valid to predict the wear property, as well as that it is useful for optimizing the formulation and manufacturing conditions, the relatively excellent combination of the ingredients and the appropriate manufacturing condition parameters can be obtained by this approach.
Research of SQL Server Automatic Marking Based on Logical Formal
Authors: Chen Yao Fei
Published: September 2011

The author proposes a scheme of SQL Server Automatic Marking based on logical formal. The scheme consists of three parts: generating paper, skill assessment and automatic marking. Describe the question's Marking information by using the logical formal method. Achieve automatic Marking by building the logical formal system. Focus on three components of the scheme: logical formal description, get information of database based on ADOX(Microsoft ActiveX Data Objects Extensions for Data Definition Language and Security) and automatic marking of three database operations:Creat,Modify and Delete. Describes the whole process of logical formal Marking with example. Analysis the assessment effect of the results about the example. Analysis between manual and automatic Marking shows that: logical Formal automatic Marking is better than the average artificial error and close to the minimum artificial error.
Study on Pricing Method of Residential Development Project Based on Housing Mass Customization
Authors: Xu Jiang
Published: September 2011

As a traditional mode, Mass Production in real estate development is having changed to Housing Mass Customization. It is considered that not only production formalization and demand personalization could be combined with well by HMC mode,but also the separation degree between housing supplies and housing demand could be decreased in a great extent. The traditional pricing methods ,such as market comparison approach ,discounted cash flow and cost approximation, are not suitable for determining the price of residential development project produced by housing mass customization mode. In the paper, market behavior of HMC project is analyzed, and it is found that forward contracts theory can be applied to determine the HMC project price. In the finial, an appropriate pricing method is put forward .
Reason Analysis of Runway Incursions Based on Grey Theory
Authors: Ju Zi Qi
Published: September 2011

To prevent runway incursions, we should have the corresponding systematic prevent ideas. Based on the definition of runway incursions and classification of relevant criteria, it analyzed the runway incursion system, put forward the closed-loop management ideas to prevent runway incursions, and found the main contradictions of preventing runway incursions using the gray relational analysis. With the example of runway incursion dates of U.S.A, by means of Grey Relational Analysis of different severities and different factors for runway incursions, it have shown that the key factors leading to the class AB and class CD runway incursions are Vehicle/Pedestrian Deviations and Pilot Deviations respectively. Meanwhile, it proposed integrated prevention measures of runway incursions.
The Application of Mashup in PKM
Authors: Luo Lin , Gao Ting
Published: September 2011

Mashup is one of the technologies which are very popular. It is a kind of new applications based on Web. It could organize the sounds, pictures and texts well, filter the Spam, making the reading clearer and more comfortable. Implementation of PKM (Personal Knowledge Management) is important to reduce one’s loss due to information asymmetry. The abilities of obtain, evaluation, management and express capacity could be improved greatly. This article introduces the definition and significance of Personal Knowledge Management, present what is Mashup and RSS, and the advantages, tools and typical application of Mashup. Last, we select Yahoo Pipes to make a personal news browsing tool with which you could simplify the operation, get together information on different sites to make it convenient to read the news spread all over all the news sites. You may find that it is so simply to get the information.
Entropy-ANP-SSD Evaluation Model and Empirical Study about the Low-Carbon Development Level of Lead and Zinc Enterprises
Authors: Bu Hua Bai
Published: September 2011

The paper established the evaluation index system of low carbon development levels of lead and zinc enterprises under the background of low carbon economy, and raised the “Entropy -ANP-SSD ”evaluation model about the low carbon development levels of lead and zinc enterprises in China combined with the advantages of Entropy, ANP, and SSD and the latest research results, Empirical study show that the model can solve the low-carbon development level of lead and zinc enterprise evaluation, with good validity and universality from a new perspective, and provided a lead and zinc enterprise strategy formulation and decision support.
Research on Problems and Basal Theory of Engineering Equipment’s Maintainability Test
Authors: Zhang Ming , Su Hai Jun , Yuan Long , Tao Jing
Published: September 2011

Engineering equipment is an important element of modern information operation. Because of the special operational function, engineering equipment will be confronted with more attack and damage probabilities than other equipments. Nowadays maintain is become an important factor to keep and even improve operation effectiveness of engineering equipment, and maintainability test is the main means to evaluate engineering equipment’s maintainability. But according to late information of maintainability test study, guide and experience are lacked in engineering application of engineering equipment’s maintainability test, and many problems are existed in engineering equipment’s maintainability test obstinately. To improve ways of engineering equipment’s maintainability test and evaluate engineering equipment’s maintainability more scientifically, the content and the procedure of engineering equipment’s maintainability test are brought forward.
Research on the Pressure Fluctuation of Ceramic Filter Backwash Based on Accumulator
Authors: Zhang Shao Wu , Hu Zhi Jun , Han Jiang , Zhao Jun
Published: September 2011

In the present study, we analyzed the origin of pressure fluctuation of ceramic filter during recoiling washing process and found that reducing such pressure fluctuation necessitates the use of an accumulator. From functions, types, volume to define the types of accumulators, and by employing the TT-12 type of ceramic filter machine as an example, according to known conditions and through calculation and analysis, we determined the air pressure and accumulator volume and chose the NXQA-16/10-L-A accumulator. With the use of this type of accumulator, we demonstrated that the pressure fluctuation was reduced to be within 0.02 MPa when the air pressure was 0.1 MPa, which satisfied the requirements for recoiling washing.
The Development of Friction Material Tester with Adjustable Speed and Pressure
Authors: Wang Zhen Yu , Wang Tie Shan , Qu Bo
Published: September 2011

In this paper, according to the Chase tester and applying the innovative thinking, the principle of the friction material tester with adjustable speed and pressure has been presented, and the tester has been designed and manufactured at the base of the friction tester of constant speed. This paper illustrates the working principle, composing parts and structure parameter of the tester in detail. A lot of repeatability tests have been done, as a result, it is demonstrated that the structure design of the new tester is reasonable and the performance is up to the mustard absolutely. With the application of the new tester at the expanded working condition, it has not only the function of the constant speed tester, but also the Chase tester. The new means used in the friction material test has been offered by the new tester, which is original in the world.
Template-Based Expression and Reuse of Design Knowledge
Authors: Lu Chang Ming , Zheng Shu , Jin Wei , Sheng Yan Fa , Sun Yi
Published: September 2011

Reuse of existing design knowledge is the key to realize rapid product design. Analysis of present knowledge capture, representation and reuse method as well as study of static and dynamic knowledge capture method, the design template as a carrier for knowledge expression and reuse method is proposed. A typical instance for small agricultural machinery product is given to demonstrate the feasibility of the design approach.
Construction and Application of the Patent Knowledge System for Supporting Product Innovation
Authors: Gong Jian Wen , Li Wen Qiang , Li Yan , Liu Xiang
Published: September 2011

Patent which as a carrier of knowledge contains abundant information, is an important resource of supporting innovative design. Based on the analysis and organization of the patent information of mechanical and electrical fields, this article proposes a proprietary database system for product design innovation. Through a combination of TRIZ and FBS solution process, it can provide support in the product design stage. Finally, an example of folding bike design is listed to explain the application of the patent knowledge base.
Research of NC Automatic Programming Based on Process Features Recognition
Authors: Tao Jian Hua , Yang Xiao Qin , Liu Xiao Chu , Zhu Ming Ying
Published: September 2011

The paper discuss the methods of extracting process features of parts from STEP AP203 file and collecting process information from the macro of CAM software. First the STEP file and its data structure are analyzed, and the method of extracting and recognizing process features is studied. Secondly, according to the different processing methods of part, the function of macros in PowerMILL is used to save excellent processing information, and the reusable process database is established. Finally, the mapping between the process features and the processing information is established. Take mold electrode as a example, these methods are proved in this paper, and a system which can recognize process features, collect processing information and program NC code automatically is developed.
Innovative Design of an Automatic Train Picking Hook Device Based on TRIZ
Authors: Wu Tian Yue , Li Wen Qiang , Li Yan
Published: September 2011

TRIZ theory is employed to design an automatic picking hook device on the dumper unloading line in thermal power plant. First and foremost, engineering parameters is listed to establish TRIZ model of practical problem, then relevant solving inventive principles is found by using conflict matrix, finally an innovative design is made and an automatic picking hook device is being initially proposed in this issue. This device can reduce not only the online failure rate, but also the labor intensity and operation difficulty.
Layout Optimization of Support Structure Based on ANSYS
Authors: Guo Lian Zhong , Yang Ding , Chen Xing Rui , Huang Zi Teng
Published: September 2011

This work is to present layout optimization of support structure based on ANSYS with stress constraint. Currently size, shape and topology optimization have been well studied, but layout optimization is still in the early stage and its application is limited by its massive mathematical model. In this paper the problem of numerical calculation is solved by the optimization algorithms of ANSYS and then through studying the mathematical model, sensitivity, controlling parameters and optimization criteria of it a toolkit is designed and programmed by C# language. At last, an optimization case is studied and the results show that more reasonable design prototypes can be found for engineers through using the toolkit especially in the conceptual design stage.
Numerical Simulation of Three-Dimensional Temperature Distribution in the Supercharged Boiler Furnace
Authors: Li Zhong Gen , Zhou Guo Yi
Published: September 2011

In this paper, the visualization of three-dimensional (3-D) temperature distributions in the supercharged boiler furnaces from radiative energy images captured by multiple charge-coupled device (CCD) cameras mounted around the furnace is studied numerically for the first time. The combustion of supercharged boiler is analyzed by structuring a full-scaled model and grid partition. The calculation of the radiative energy image formation is a fast algorithm based on the Monte Carlo method and the two-color temperature calculation method. For the inversion of the 3-D temperature distributions, a modifiedregularization method is used. The simulation results show that: even though the measurement error of the radiative energy images for the 3-D temperature distributions up to 0.12, the position of the reconstruction high-temperature zone is almost the same to the one of the simulation. The results indicate that the reconstruction quality is satisfactory, and the method can lead to a good visualization result.
Innovative Design and Simulation for a Novel Vane Pump
Authors: Huang Shi Biao
Published: September 2011

A novel structure of vane pump is brought forward, a new assembly relation among vane, sleeve, port plate and stator is created, mechanical bearing condition of new-type vane is preferable than traditional vane, vane is kept clearance with stator all the time as long as dimensions of those parts are reasonable. Modal analysis and optimized design for vane is made with finite element analysis software ANSYS. By simulating analysis for pump, simulation result shows that this novel vane pump is feasible. Compared with traditional pump, wear and vibration of novel vane pump can be reduced, volumetric efficiency of pump can be enhanced remarkably, the novel vane pump has certain application value.
Effects of Laser Shock Processing on Fatigue Lives of Heat-Resistant Steel and Estimation of Fatigue Safe Lives
Authors: Huangfu Yong Zhuo , Ren Xu Dong , Ruan Liang , Zhang Yong Kang , Jiang Da Wei
Published: September 2011

Fatigue tensile treatment was performed on 00Cr12 heat-resistant steel specimens which had been treated by laser shock processing (LSP). The unilateral tolerance factor statistical analysis method and the two-dimensional Weibull distribution method were used to predict the values of fatigue safe lives of the specimens respectively. The results indicate that the fatigue lives of 00Cr12 specimens were enhanced greatly after LSP, and improved by 62% compared with the specimens which were not treated by LSP. The unilateral tolerance factor method obtained an exact estimation value of the fatigue safe life; while the two-dimensional Weibull distribution method can get a range of values of fatigue safe lives, the fatigue safe lives of the specimens which after LSP were a range from 116570 to 150230, the average value was 132330. The two-dimensional Weibull distribution method has more engineering applicability and can be used to estimate the fatigue safe lives with fewer experiments.
Mathematical Model for Evaluating Roundness Errors by Minimum Circumscribed Circle Method
Authors: Liu Ping , Miao Hui Yi
Published: September 2011

An unconstrained optimization model is established for assessing roundness errors by the minimum circumscribed circle method based on radial deviation measurement. The properties of the objective function in the optimization model are thoroughly researched. On the basis of the modern theory on convex functions, it is strictly proved that the objective function is a continuous and non-differentiable and convex function defined on the two-dimensional Euclidean space. The minimal value of the objective function is unique and any of its minimal point must be its global minimal point. Any existing optimization algorithm, so long as it is convergent, can be used to solve the objective function in order to get the wanted roundness errors by the minimun circumscribed circle assessment. One example is given to verify the theoretical results presented.
Invention of Nano-Material Synthesis Process Equipment via Vapor-Phase Technics
Authors: Zhang Ming Zhu , Wang Qiang
Published: September 2011

This paper mainly introduces the principle of preparation for nano-materials via vapor-phase technics, the design and assembly of nano-material synthesizer. Vapor-phase techniques include physical and chemical vapor synthesis, which involves vapor particle nucleation, nuclei growth, cohesion and a series of basic process in particle growth. Based on the principle of vapor-phase, this paper also details the invention of the process equipment for nano-material synthesis, which realizes an adjustable process in automatic control. The design aims to achieve a synthesizer being adjustable, automatic, intuitive and easy to operate. It mainly includes the following features. First, the invention helps show that preparation for nano-materials via vapor-phase technics is feasible. Second, with the high output of vapor-phase reaction, the synthesizer can not only be carried out in the experimental environment to demonstrate the synthesis of nano-materials, but also be applied in industrial production.
The Research of GPRS-Based Remote Fault Monitoring System for CNC Machine Tools
Authors: Wu Ming Liang , Wang Xiao Bing , Yu Shu Rong
Published: September 2011

Based on GPRS network remote monitoring system which uses its two-way transmission performance, can easily monitor various electrical equipments and get information. Compare with the past remote monitoring systems, the system has the advantage of flexible networking, convenient, wide range of data transmission, high reliability, fast response time, and has great significance and value of research in CNC machine tool system with upgrade GPRS in the mobile communication networks, data services expand and data transfer capabilities.
Genetic Algorithm Based on Simulation for Single Machine Scheduling Problem with Setup Times
Authors: Liu Mei Hong , Li Zhen Hua , Chen Jun Ruo
Published: September 2011

Single machine scheduling problem with setup times is proved to be an NP-hard problems, and its complexity is equivalent to the traveling salesman problem (TSP) of n cites. Integrating the advantages of simulation and genetic algorithm (GA), this paper proposes a GA based on simulation to solve this NP-hard problem. Then, it introduces how to build the simulation model and how to design chromosome coding and selection, crossover and mutation operators of GA for this special scheduling problem in details. An experiment has been carried out and the result proves that the method is feasible and should be adopted.
Numerical Simulation of Heat Transfer and Fluid Flow in Glass Tank Furnace after Bubbling
Authors: Qi Zhao Hui , Sun Bao Hong , Xu Ling Yan
Published: September 2011

Numerical method to simulate the effect of air bubblers on glass melt flow and heat transfer in glass tank furnace is presented in this paper. The numerical simulation is preformed by using Gambit and Fluent software. Results of numerical simulation for glass melt flow and heat transfer with and without air bubbling technology are compared. The roles of stirring air bubblers installed in different locations played are discussed. The results show that mathematical model established in this paper can better simulate the glass melt circulation and heat transfer in glass tank furance, and air bubbler has a significant effect on glass melt circulation and heat transfer, and the best installation locations should be chosen by calculating in order to make full use of the air bubblers. Air bubbling technology will improve the quality of glass obviously if it is used properly. The results obtained can provide reference for engineering design of glass tank furnaces.
A Novel Anti-Blockage Indicator in Airport
Authors: Hu Jun , You Lei , Jia Shu
Published: September 2011

Based on the previous work of air traffic, a novel indicator— anti-blockage coefficient was proposed. When air traffic was influenced by bad weather or emergencies, this coefficient, building conflict factor, could calculate the transition probability matrix. Then, with discrete time loss queuing algorithm, it could give the degree of congestion.