bluuebunny/crossref_metadata_2025 huggingface dataset:
Smith Predictor Based Fuzzy Estimator for Uncertain Time-Delayed Systems
Authors: Kuo T.C. , Huang Y.J. , Hong B.W. , Chang C.H. , Tseng H.Y.
Published: February 2012

In this paper, a novel robust control method is proposed for uncertain time-delayed systems. The objective is to guarantee system stability and robustness against modeling errors. A fuzzy estimator is developed to predict the uncertain plant time-delay. Smith predictor is exploited. An adaptive tuning law is developed to further improve the control system performance. The proposed robust control method is successfully applied to a heat exchanger control system. Simulation results show that the approach is indeed effective. System robustness as well as stability is achieved.
A New Algorithm on Mice Action Analysis
Authors: Hong Liu Rong
Published: February 2012

Mice action data is important part of the experimental data in neurology, physiological etc. subjects. A algorithm was proposed on action analysis of mice in this paper. Difference of mice in inter-frame was extracted while the position relationship between mice contours and change information was taken into account. Then K-Means clustering algorithm was used to cluster the information while the cluster center was used as the key frame. In the recognition phase, the similarity measure function was defined according to practical significance of the center of K-Means algorithm, the most similar sample class with it was the result. Experimental results showed that the action analysis algorithm is very effective.
The Study of Fast Pattern Making Methods Based on ET2007 CAD System
Authors: Yi Dong Fang , Liu Hui Juan
Published: February 2012

In order to improve the efficiency of pattern making based on CAD system for garment, the application of ET2007 CAD system was discussed in the paper. Through in-depth study found that function of its intelligence pen tools is very powerful. Because the tools is very convenient for finding the point inline, so it should be fully used for reducing greatly the steps and improving significantly the efficiency. It is also found that the order of pattern making and the tools used all influence the efficiency. For structure more complex garment, the pattern making on a basic block can also reduce greatly the steps and improving significantly the efficiency.
Influence of Span-Thickness Ratio on Arching Action of Reinforced Concrete Frame Beams
Authors: Chen Ming Hui , Song Xiao Sheng , Su You Po
Published: February 2012

This paper mainly deals with the influence of the variety of span-thickness ratio of beams on arching action of reinforced concrete frame beams through trial experiment research and theory analyzes.By experimental study and theoretical analysis,limit carrying capacity of reinforced concrete frame beams can be enhanced largely owing to arching action.The larger span-thickness ratio of beams is,the lower arching action of reinforced concrete frame beams and limit carrying capacity is,but the reduction is disproportionate.
‘Theory and Practice Together’ in American Engineering Education
Authors: Lu Chun Hui
Published: February 2012

How can people get the difference fatal is most based on the training. There are many differences in training students of engineering in America and in China. Students in USA get ability and cooperation spirit by independent thinking, team work and project training. They have many chances to combine the Engineering theory and practice together in studying term. On the contrary, students of engineering in China spend more time to read theory or learn English to pass examinations, and Chinese students can get higher theoretical level indeed. So they can use computer to design, but scare the practice.
Simulation Analysis of Seed Metering Procedure in Scoop Metering Device Based on Discrete Element Method
Authors: Ji Yu Jie , Xue Hong Da , Li Cheng Hua
Published: February 2012

Seed metering procedure of metering device was a key factor to affect performance of precision seed metering device. Based on analysis of seed holding volume of metering scoop, relationship between the seed holding volume and structure parameters of the metering scoop was established, and beginning and ending angles of seed clearing during the seed metering procedure were determined. Simulation analysis of seed metering procedure with different parameters of the metering device was carried out by mean of discrete element method to identify the influences of metering scoop parameters on the performance the metering device, and suitable range of structure parameters of the metering scoop were investigated. Finally, the reasonability of design parameters of the metering scoop for experiment usage was verified.
Application of Genetic Algorithm for Nozzle Parameters Optimization of Waterjet Propulsion System
Authors: Ling Xuan , Wang Xu Dong
Published: February 2012

Waterjet propulsion system have been increasingly used in the world due to its advantage of good maneuverability, operability, less vibration etc. The full understanding of waterjet reaction thrust is the preliminary step for the design of waterjet system. A recent research in this area is optimizing the nozzle structure of waterjet propulsion system to increase the waterjet reaction thrust as much as possible. In order to obtain the optimal parameters of nozzle, a new integrated method combining genetic algorithm with CFD simulation analysis is put forward in this paper. The integrated method will not only shorten the system design cycle, it will also develop optimization technique to realize the potential of computer based design automation. Finally, the optimal results are presented and discuss.
Study on Surface Roughness in High-Speed Milling for ALMn1Cu
Authors: Wang Zhen Hua , Yuan Jun Tang , Huang Jun
Published: February 2012

Anti-rust aluminum is widely used in aviation, aerospace, communications, as well as weapons with non-corrosion, light, and other fine characteristic. In this study, in order to improve the machined surface quality and reduce the surface roughness and find the influence of the cutting parameters on the surface roughness, a series of cutting experiments for AlMn1Cu are conducted to obtain surface roughness values in high-speed milling. According to the analysis of variance (ANOVA) of factorial experiments, the cutting parameters significantly influencing on the surface roughness were presented.
Testing Analog Circuits by PCA of Power Supply Current
Authors: He Guo , Zhang Chao Jie , Chang Guang Hui , Liang Shu Hai
Published: February 2012

A method using principal component analysis (PCA) of dynamic power supply current was proposed for testing of analog circuits in this paper. The basic model of the proposed method and the general rule for analog fault detection were described in detail. At first, the principal component model of fault-free circuits was constructed. Then the circuits-under-test was compared with the principal component model to calculate the statistic for fault detection. The features of power supply current in both time and frequency domain were combined by PCA, and it could overcome the difficulty to determine threshold by empirical knowledge. The proposed method was applied to detect faults of the signal filtering and amplifying circuit, which is used in the ultrasonic liquid-level sensor. The results show that the power supply current contains information about the circuit’s faults, and can be used for fault detection of analog circuits by analyzing this signal.
The Relationship between Minimum Zone Sphere and Minimum Circumscribed Sphere and Maximum Inscribed Sphere
Authors: Meng Fan Wu , Xu Chun Guang , Li Hai Ming , Hao Juan
Published: February 2012

Among the four methods (minimum zone sphere, minimum circumscribed sphere, maximum inscribed sphere, and least square sphere), only the minimum zone sphere complies with ANSI and ISO standards and has the minimum sphericity error value. Evaluation of sphericity error is formulated as a non-differentiable unconstrained optimization problem and hard to handle. The minimum circumscribed sphere and the maximum inscribed sphere are all easily solved by iterative comparisons, so the relationship between the minimum zone sphere and the minimum circumscribed sphere, the maximum inscribed sphere is proposed to solve efficiently the minimum zone problem. The relationship is implemented and validated with the data available in the literature.
Deformation Prediction of Deep Excavation Using Support Vector Machine
Authors: Shi Xu Chao , Chen Wu Xin , Lv Xiu Juan
Published: February 2012

Support Vector Machine (SVM) is a new pattern recognition method developed in recent years on the foundation of statistical learning theory. It wins popularity due to many attractive features and emphatically performance in the fields of nonlinear and high dimensional pattern recognition. Due to the complexity of the deep excavation, deformation prediction problem has not been a good solution. In the paper the support vector machine model was proposed to predict the deep excavation deformation. On the basis of deep excavation displacement data measured with real time series, the model of deep excavation displacement with time was built by SVM. Typical deformation data of deep excavation is used as learning and test samples. Comparison analysis is made between calculated values generated by SVM method and observed values. The result shows this method is feasible and effective.
The Structural Design of Multi-Function Hydraulic Clamp
Authors: Wei Yu Feng , Kong Fan Rang
Published: February 2012

Hydraulic technology is applied to the hydraulic clamp. The combination of mechanical and hydraulic can make hydraulic clamp smart and compact, meanwhile, it achieves a great deal of additional power. The effect of hydraulic force increasing is entirely feasible. The principle, the mechanical structure and structure modeling of the multi-function hydraulic clamp are described in this paper. By optimizing the product design, the structure is more reasonable and compact ,the pressure of hydraulic clamp is adjustable.
Construction of Social Responsibility Comprehensive Evaluation System for the Large State-Owned Enterprises
Authors: Wei Zhi Jun
Published: February 2012

Based on the characteristics of the large state-owned central enterprises, this paper refers to an index system which can be used for evaluating their social responsibility fulfillment degree. It includes several procedures, such as determining each index weight by using G1 method, constructing a fuzzy comprehensive evaluation model, and verifying the feasibility through applying to an example. This research has effect on the scientificity of assessing their social responsibility fulfillment, and helps government and society to supervise and control the enterprises.
Generalized Synchronization of Chaos in RCL-Shunted Josephson Junction with Uncertain Parameters
Authors: Fang Na , Fang Jie
Published: February 2012

This paper investigates the generalized synchronization of chaotic dynamics in resistive capacitive inductance (RCL)-shunted Josephson junctions with uncertain parameters.Based on Lyapunove stability theory and adaptive control method, unified nonlinear feedback controller and the parameter update laws are pesented .Numerical simulation illustrate that the system can realize generalized synchronization by different scaling factors .
The Disquisition of the Three-Dimensional Optimize Validate System of Oil-Immersed Pump Lectotype
Authors: Li Qiang , Li Jian Zhong
Published: February 2012

The applicability and accuracy of whole set oil-immersed pump lectotype are the key points to improve the recovery ratio of oil field and to conserve energy. This paper have conceived the construction and implementation of the expert system of whole set oil-immersed pump lectotype and discussed in several aspects: such as systematic analysis and design, the construction of engineering control platform, the development of plug-in software, the construction of intelligent system and the execution of software design and so on. It has integrated the synthetic approach with expert System of Whole Set Oil-immersed Pump lectotype.
Representation Form of Rough Graph
Authors: He Tong
Published: February 2012

Based on the definition and basic properties of rough graph, by using the representation form of classical graph theory, this paper gives the representation form of rough graph. Rough graph theory extends the classical graph theory in terms of concept and application field, which enables us to research rough problems intuitively by using the related knowledge of classical graph theory.
An Online Monitoring, Diagnosis and Control System for Heavy Duty NC Machine Tool
Authors: Jia Guang Fei , Xuan Jian Ping , Wu Bo , Hu You Min , Cheng Yao
Published: February 2012

During machining some ultra-intense and special-shaped parts, unstability and surface ablation often turn up. Some large and heavy parts are often machined with heavy duty NC machine tool. For avoiding the processing defects of the above parts, an online monitoring, diagnosis and control system is designed for heavy duty NC machine tool. The system can online monitor the operation condition of heavy duty NC machine tool and real-time control the processing. Some methods of signal analysis and processing are adopted such as spectrum analysis, wavelet analysis, Wigner-Ville distribution and Artificial Neural Network etc. The system is developed with C language and Qt based on Linux operation system. Optical fiber communication is adopted between industrial computer and NC system. Experiment platform of the system is machining an aircraft landing gear with five-axis NC machine tool. The scheme is verified feasible after preliminary test.
Ecological Restoration by a Multistage Floating-Bed System in a Eutrophic Urban River, China
Authors: Chen Yu Hui , Zhang Yong , Huang Min Sheng , Zhang Yi Fan , Zhao Feng , Luo Jin Hong
Published: February 2012

By constructing a multistage floating-bed system by combination of macrophytes, aquatic animals and aquamats ecobase for ecolgical restoration in a eutrophic urban river, the improvement of water quality and the dynamic variation of phytoplankton was investigated. The results showed that the average removal rates were 9.85%, 15.86%, 24.47% and 12.75%, respectively. phytoplankton quantity was decreased by 22.82×104ind./L and Shannon-Weiner Index was increased by 0.11 averagely, after the restoration work in the demonstration area comparing to control area. The negative correlation between Shannon-Weiner Index of phytoplankton and TN(-0.77, P<0.01) showed that multistage system might effect phytoplankton indirectly through removing nutrients from river, which indicated that the employment of ecological restoration technology of multistage floating-bed system was effective in raising the ecological recovery efficiency of polluted water bodies.
Design of the Variable FU Array for Forward/Backward Transform in H.264
Authors: Park Ki Hong , Ju Won Ki , Kim Yoon Ho
Published: February 2012

In this paper, we designed the variable FU array consisting of single FU for transform in H.264. The paper highlights the design of FU array which can accommodate the operation block of various sizes. We implemented the FU array processor, and some experiments are conducted so as to verify the architecture. The proposed variable FU array can be extended to FU array that will give a scalability feature to coding tools of MPEG-1/2/7/21 and H26x.
Longitudinal Cracking Analysis of PCCP with Broken Wires
Authors: You Ri
Published: February 2012

The prestressing wires of prestressed concrete cylinder pipe (PCCP) provide core concrete with compressive stress to resist internal pressure. Broken wires resulting from corrosion and embrittlement may cause cracking in pipe wall and increase the risk of failure with time. In order to reveal the mechanism of longitudinal cracking in PCCP with broken wires, a simplified model is developed and the maximum number of broken wires to preclude onset of longitudinal cracking can be determined conveniently by the equations derived in this paper. Verification against results of finite element analysis shows that the presented method has decent accuracy for appropriate effective pipe length and wall thickness. By comparing the calculated maximum number of broken wires with the actual number of broken wires detected by inspection and monitoring technologies, longitudinal cracking in prestress loss zone can be predicted, thus aiding condition assessment of PCCP.
Propagation Characteristic of Ultrasonic Lamb Wave
Authors: Chen Xiao , Xu Kai
Published: February 2012

Ultrasonic wave transmitted in the plate is called Lamb wave. The dispersion characteristic of Lamb wave makes it very complicated to be used in material Nondestructive Testing (NDT). In order to solve this problem, the analysis of frequency-dispersion characteristic of Lamb wave is made in this paper, and the dispersion curves of the Lamb wave in specific plate are plotted, then the physical propagation model of Lamb wave is established. Under the analysis of FFT, the expressions of the Lamb wave in specific plate are obtained. By combining with the dispersion characteristic of the Lamb wave, the changes of waveform in different propagation distances are simulated. With the deep researches of new algorithms, Lamb wave will be applied in wider area.
Research and Design of Front Located Hysteroscopy
Authors: Xiang Bo , Kang Ying Jie , Wang Xiu Ying , Dai Kun , Dai Yao
Published: February 2012

This paper first introduces the recent development of the popular hysteroscopy, the international minimally invasive diagnosis instrument, and then analyzes the lighting and video of hysteroscopy. According to high energy consumption of common hysteroscopy, front located hysteroscopy system is put forward. The principles, the lens structure, the manufacture process of lens prototype, the trial manufacturing process of power box are all discussed in this paper. It is the first time that prototype has been design and tested in domestic. In the normal conditions, the energy consumption decreased by 299/300. And the volume, the weight, and the price of the designed front located hysteroscopy are greatly reduced. Moreover, tests show that it can apply to special conditions such as the disaster relief field and field operation.
Design of Electromagnetic Heating Riveting Control System Based on DSP
Authors: Yang Hai Tao , Cao Jun Bin , Guo Er Min
Published: February 2012

A new Electromagnetic Heating System for riveting is designed bascd on the electromagnetic heating theory which centers on TMS320LF2407. The design philosophy, working principle, the hardware and software of system arc presented. Moreover, the basis of design and parameters of application arc introduced in details. The application shows that the system is rcliable, efficient and convenient.
Passivity–Based Control of Photovoltaic Grid-Connected Inverter
Authors: Mu Xiao Bin , Wang Jiu He , Xu Sheng Sheng , Gu Wen
Published: February 2012

Photovoltaic (PV) grid-connected system requires the inverter possesses excellent dynamic and static characteristics. In the view of the mathematical model of the inverter is nonlinear, we will adopt a kind of nonlinear control strategy called Passivity–Based Control (PBC). First we establish the standard Euler – Lagrange (EL) mode for inverter, then we also prove that this inverter is strictly passive. Based on passivity of inverter, we can redistribute the system energy, and adopt the approaches of injecting damping and decoupling to improve system performance. In this paper, we can control the active and reactive power of system to make system can fast track the PV array maximum power point, and possess the capacity of compensating the reactive power. Simulation results show that passivity-based control method can make the inverter possess better robustness and dynamic.
Simulation Study on Indoor Air Ventilation Efficiency Based on Computational Fluid Dynamics
Authors: Min Jian Qing , Xu Zi Bin
Published: February 2012

A numerical investigation is presented of the structure of a displacement ventilation convection by using the Reynolds averaged Navier-Stokes equation and K-ε turbulence model. Numerical results are reported for the effect of Gr/Re2 on structure of indoor air convection and ventilation efficiency. The results show that the structure of indoor air convection changes from mechanical ventilation to natural ventilation, and the curves of ventilation efficiency are like “M” with Gr/Re2 increasing.
PWM Speed Regulating System of DC Torque Motor Based on Fuzzy Immune-PID Control
Authors: Qin Liang , Zhang Wen Guang , Zhou Shao Lei , Shi Xian Jun
Published: February 2012

A PWM drive card is designed aiming at a certain type of DC torque motor used in the speed turntable. A fuzzy immune-PID control method is used instead of the traditional PID method, in order to modulate the PWM waves, and then realize the control for servo¬¬¬ system of torque motor. The simulation results show that, compared with the traditional PID method, the responding time is greatly reduced by using the fuzzy immune-PID control method. And the system gets good anti-interference ability, of which dynamic and steady performances are also improved.
Modal Analysis of Air Compressor Plate
Authors: Li Xiao Ying , Zhang Deng Feng , Wang Xin Chun
Published: February 2012

In certain air compressor plate in the high speed revolving situation, based on the finite element theory, stress distribution in air compressor plate can be obtained. After the pre-stressed plate is carried on the modal analysis, fifth-order inherent frequency from first-order to fifth-order can be calculated out. After modal of compressor plate can be expanded, Relative deformed shape, relative displacement vector sum and relative Von Mises stress mode of compressor plate from first-order to fifth-order can be obtained.
The Visualization of Electromagnetic Environment for Weapon Equipments
Authors: Guo Zhong Wei , Xu Wen Tao , Li Hong Feng , Hu Wang Yang
Published: February 2012

Aiming at the invisibility of the electromagnetic environment (EME), this paper presents the method to visualize the weapon equipments EME. The visualization can be divided into two steps. Firstly, we can model the weapon equipments EME to get the electromagnetic data by the finite difference time domain(FDTD) and the transformation from the near field to the far field. Secondly, we can render the electromagnetic data by the data field visualization. The experiment shows that this way is feasible and effective.
Projective Synchronization of a Modified Coupled Dynamos System
Authors: Wang Chun Mei , Chang Ren Long
Published: February 2012

Based on techniques from the state observer design and the pole placement technique, we present a systematic design procedure to synchronize a modified coupled dynamos system by a scaling factor ( projective synchronization ). Compared with the method proposed by Wen and Xu, this method eliminates the nonlinear item from the output of the drive system. Furthermore, the scaling factor can be adjusted arbitrarily in due course of control without degrading the controllability. Finally, feasibility of the technique is illustrated for the unified chaotic system.
Research on Degradation Behavior of Airborne Rubber Products
Authors: Zhang Xiao Jie , Jiang Tong Min , Luo Hua , Zhang Xiao Rui
Published: February 2012

Due to the complex working and storage environment for airplanes, the consumptive failures of airborne products are unavoidable. Aiming at the problem that degradation behaviors that cause this kind of failures are frequently neglected, based on the concept of degradation for airborne products, a new method of conducting research that treats aging process as a critical degradation behavior is presented. According to the characteristics of airborne mechano-electronic products, steering engine is defined as a critical airplane airborne mechano-electronic product. Through detailed analysis of the vulnerable area of steering engine, the failure mechanism of aging of steering engine rubber seal is discussed. The degradation model of steering engine rubber seal is presented. Finally, feasibility of the method that replaces the research of degradation behavior of the airborne mechano-electronic products with that of aging is verified.
Research on Buckling Mechanism of U Type Steel Support’s Pinnas Based on ANSYS
Authors: Liu Jian Zhuang , Li Jia , Gan Li , Du Fang Fang
Published: February 2012

The prevenient mechanical research on U type steel support focuses on two dimensional analysis in the installing plan. Interested in the buckling failure of U type steel support’s pinnas in one coal mine of Huainan Group, the authors build three dimensional models to stimulating 25U and 29U support. The appealing simulation results verify ANSYS’s 3-D computational capabilities about complicated section support. The main objective of their investigation has been to obtain some knowledge of the mechanism, stress distribution, and load magnitude in the support’s deforming. Further, the deviating longitudinal load play an accelerating deformation role on its distorting, which should be paied more attention to cross-section optimization, design of support parameters, and installing way of steel lacing.
Flaw Detection by Using Hardware-in-Loop Based on Proteus
Authors: Sun Cheng Zhi , Liu Hao Rui , Chen Ya Yu
Published: February 2012

A rapid R&D Process is produced in eddy current detection using hardware-in-loop simulation. Inspired by software and hardware concurrent exploitation method in software engineering, we explore a new top-down design method in Proteus environments. Data acquisition and data-out devices which can work in Proteus environments are designed, including the digital filter and coherent detection procedures for eddy current detection. By putting the spiral development of software engineering into the design process of the hardware projects, which uses Proteus as a system prototype development platform, unifies the gap between field experiment and the software simulation by using hardware-in- loop method and accelerates design schedule. In this way, rapid eddy current detection prototyping can be designed very soon, and it is useful for system-level devices design in eddy current detection. The practice proves that this method can greatly shorten the product development cycle and reduce development cost for system-level devices design in eddy current detection.
A Hardware-in-Loop Simulation System for Crush Natural Gas Turbo Engine
Authors: Yuan Rong Di , Zhang Cao Bin
Published: February 2012

Real-time model is one of the key elements in Hardware In Loop (HIL) simulations. A new Crush Natural Gas (CNG) Turbo Engine model and HIL simulation platform are presented in this paper. The platform provides simulations of engine speed, torque, dynamic load, turbo, exhaust gas temperature and emissions conditions. The platform is based on Matlab/Simulink, Labview and can be seamlessly connected with a CNG engine control unit (ECU). Simulation results indicate that platform provide us higher development efficiency as well as lower reduce development expense of ECU.
Preparation of New Adhesive for Tobacco Sheet
Authors: Liu Jun Qin , Zhao Feng Qing , Li Pei Xin , Chen Qian
Published: February 2012

The purpose of this work was to prepare a multi-function adhesive for reconstituted tobacco. With chitin as the main raw material, adding complex moisturizer, cross-linking agent and other additives, an adhesive for tobacco sheet was obtained. Factor design was used in the experiment for formulation optimization. The product possesses excellent viscosity, water resistance and tensile strength.
The On-Line Monitoring System of Tower Crane Load Based on FLNN
Authors: Guo Quan Min , Hu Hui
Published: February 2012

By force analysis of load limiter, the nonlinear relation between the load and the force of sensor in indirect measurement of tower crane load is indicated. Using the force of sensor as input and the load as output, the nonlinear correction model based on functional link neural network (FLNN) is proposed to eliminate the nonlinear errors of load measurement. By adding some high-order terms, the model uses the single-layer network to realize the network supervised learning. The approach can improve network learning speed and simplify the network structure, and provides a new way for On-line measurement of tower crane load. The system realization and network simulation about tower crane QTZ63 are presented, Practical application shows that the maximum relative error of measured load is less than 2.1% and can satisfy National standard GB5144-94.
Intelligent Test System of Helicopter Autopilot
Authors: Liu Jia Nan
Published: February 2012

Aiming at the many categories, components, coupling systems and test items of helicopter autopilot, and there are many primary separation components for testing equipments. So the indicator lights of testing equipments and the operating rules are complex, and it easily causes error operation, low testing efficiency, bad stability and so on. It holds up the quick action of helicopter and restricts engineering maintenance support seriously. The test equipments in existence are relatively old, VXI bus technique is applied to design the integrated intelligent test system of helicopter autopilot. Thus the intelligent test system of helicopter autopilot can automatically test the performance of autopilot automatically quickly and accurately. So it increases work efficiency and alleviates air crew’s work intension. It ensures that helicopter has a quick action.
Force-Measuring Robot for Evaluation of Anterior Cruciate Ligament Reconstruction
Authors: Hu Yan , Wei Jun , Li Lei , Li Shi , Zong Xi Ju
Published: February 2012

Aiming at the problems of the anterior cruciate ligament (ACL) reconstruction in knee joint, such as deficiency in effective effect evaluation and insufficiency in operation safety, a zero gravity based force-measuring robot is developed to measure the pre- and post-operative tension of the knee joint ACL. The requirements for the robot's configuration and control are analyzed with regard to the ACL operation environment. Then the mathematical model of the ACL lateral force is deduced. The mechanical configuration and the control system design of the force-measuring robot for knee joint ACL are presented in detail. Lastly, experiments on measuring precision of the displacement and force of the mandrel, and the post-operation evaluation on the ovine bone, are implemented. The results show that the robot is effective for ACL reconstruction evaluation and the mathematics model of ACL forced in lateral direction is valid.
A Simulation Environment for Self-Propelled Gun Failure Prediction Based on Probabilistic Neural Network
Authors: Hong Guang , Zhang Shuai
Published: February 2012

This paper presents the development of a simulation environment in Matlab/Simulink for the analysis of the Sub-System of a kind of self-propelled gun and the design of fault tolerant control laws for this configuration. The environment includes the input module, output module and Simulation Nucleus and modeling of several types of engine failure. The simulation environment capable of implementing failure prediction has been implemented successfully as groundwork for analysis of the engine subsystem of self-propelled gun. Preliminary simulation results show the simulation environment is efficient for the Probabilistic neural network. Both abnormal oil pressure and rotate speed failures have been simulated. The simulation environment provides the necessary tools for the development and testing of advanced fault tolerant control laws.
On the Multidimensional Bipolar Isothermal Quantum Drift-Diffusion Model
Authors: Dong Jian Wei
Published: February 2012

The bipolar isothermal quantum drift-diffusion model in two or three space dimensions with initial value and periodic boundary conditions is investigated. The global existence of weak solution to the problem is obtained by using semi-discretizing in time and entropy estimate. Furthermore, it is shown that the solution to the problem exponentially approaches its mean value as time increases to infinity by using a series of inequality technique.
Research on Control Method of the Atmospheric Composition Detectors
Authors: Li Yong Ping , Zhu Guang Wu , Zeng Hong
Published: February 2012

The operational principle and working mode of the Atmospheric Composition Detectors(ACDs) based on the Quadrupole Mass Spectrometer(QMS) were introduced in this paper, the computer control method were detailed analyzed. Through the theoretical calculation and calibration experiment, researching results indicate that it has high resolution and performance.
Development of Monoclonal Antibody-Based Enzyme-Linked Immunosorbent Assay for Detecting Tetrodotoxin
Authors: Zhong Qing Ping , Liu Yan Ting , Sun Yuan Ming , Yu Hoi Fu , Lei Hong Tao
Published: February 2012

This study aimed to develop a method for the detection of tetrodotoxin (TTX) based on monoclonal antibody (McAb). The hapten TTX was linked to carrier protein keyhole limpet hemocyanin (KLH) as immunogen, and linked to ovalbumin (OVA) as coating antigen by the Mannich method. Then the 6~8 weeks Babl/c mice were immunized. After cell amalgamation, a cell line with high specificity and sensitivity was obtained, and McAb was produced. The indirect competitive enzyme-linked immunosorbent assay (icELISA) was developed for detecting TTX. The optimized working conditions of the icELISA were 4.0 μg/mL coating antigen, 0.75 μg/mL McAb, 45 min competitive time, at room temperature (20~25 °C). The IC50value of this method was 24.0 ng/mL, the working ranges were 5.2~107.6 ng/mL, the intra-assay and inter-assay coefficient of variation (CV %) were 4.2 and 4.5, respectively. This investigation will benefit the assay kit development for detecting TTX.
Synthesis and Properties of Thermo- and pH-Responsive PVA/P(DEA-co-MAA) Intelligent Semi-IPN Hydrogels
Authors: Zhang Nai Yan , Yu Jiang , Cai Shou Jun
Published: February 2012

A series of temperature- and pH-responsive poly(vinyl alcohol)/poly(N, N-diethylacrylamide-co-methacrylic acid) PVA/P(DEA-co-MAA) intelligent semi-IPN hydrogels were synthesized by free-radical copolymerization techniques and semi-interpenetrating polymer network techniques. The effects of the feed components, temperature and pH on the swelling behavior of the hydrogels were studied in detail. This unique property makes them very useful for biomedical applications such as on-off switches for modulated drug delivery and tissue engineering. With the increase of PVA content, the thermo- and pH-responsive of the semi-IPN hydrogel improved.
Dynamic Mechanical and Crystallization Properties of PTT/EPDM-g-MA/OMMT Blends
Authors: Wang Kun Yan , Ye Ying , Zhu Xiao Qing , Cao Feng
Published: February 2012

The blends of poly(trimethylene terephthalate) (PTT) with ethylene-propylene-diene copolymer grafted with maleic anhydride (EPDM-g-MA) and organoclay(OMMT) were prepared by melt blending.The composites were characterized by dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). The results suggest that the PTT is immiscible with EPDM-g-MA when OMMT was added to the blends. Strorage modulus of the PTT/EPDM-g-MA/OMMT are higher than those of pure PTT. The melting point of pure PTT and blends was almost constant. The crystallinity of the blends with OMMT were higher than that of pure PTT.
In Silico Cloning and Preliminary Analysis of FoxO3 Gene of Gallus gallus
Authors: Ren Fei , Shen Shan Shan , Li Xue Bin , Yao Si Xin
Published: February 2012

The FoxO3 belongs to the O subclass of the forkhead family. FoxO3 is a tumour suppressor, a master regulator and suppressor of primordial follicle activation. We predicted FoxO3 cDNA sequence of Gallus gallus by in silico cloning, and analyzed its coding protein by bioinformatics methods. Results showed that the FoxO3 cDNA encoded a protein with 486 amino acid residues. The predicted FoxO3 protein with a Forkhead domain was not a secretory protein, and was located in the nucleus. The FoxO3 protein had highly homology with that of other species. This study might provide a basis for future studies on the FoxO3 gene of Gallus gallus and functions of its encoded protein.
Application Studies of Fuzzy Control on Adding Medicament in Circulating Water Treatment
Authors: Chi Xin Li , Lin Sheng , Han Xi Chang , Wang Da Ren
Published: February 2012

Considering the control problem of circulating water system in the power plants with pure delay, inertia, and sensitivity to the environmental temperature, this paper applies the fuzzy algorithm to adding medicament control in circulating water system. The main procedure of fuzzy control algorithm consists of fuzzification, fuzzy inference and defuzzification. The fuzzy input and output variables are chosen as seven classes. Then, according to the actual operation situations and the expert experiences, the fuzzy rules are determined in the form of table. The effectiveness of the proposed fuzzy control method is proved by some practical examples.
A New Blocking Method with Dynamic Self-Adaptive PSO Applied in Grounding Grid Corrosion Diagnosis
Authors: Zheng Yi Hui , Li Tian Yu , Li Li Xue , Yao Gang , Xu Qing Shan
Published: February 2012

To make Power system safe and stable, corrosion of grounding grid has become one of the most threatened phenomena and problems. With the object of reducing work force and diagnosing the corrosion situations more quickly and exactly, a new method has been proposed based on blocking way with dynamic self-adaptive PSO. First, irregular grids are supposed to be separated into several regular blocks. Then the diagnosis equations will be constructed so that the original ill conditions can be reduced and the solution accuracy will be increased as well. Accordingly, the problem of solving equations should be changed into optimizing solution of problems. In this paper, a new method called Dynamic Self-Adaptive Particle Swarm Optimization (DSAPSO) is proposed, which utilizes an average rule to estimate the whole swarm to divide it into three parts of different conditions, which are called excellent part, self-adaptive part and also worse part. Such a standard principle is based on the evaluation of fitness. Aiming at different groups, their speeds and positions will be updated with different parameters. And also a self-adaptive method has been added into regulation of parameter. Furthermore, such a dynamic method will do favor in increasing the global searching ability and avoiding from calculating complexity. Eventually, the effectiveness and accuracy of the method is verified by the application in a power station in Jilin Province.
Numerical Simulation of Penetration Effect of the Rhombic Fragment on Square Honeycomb Sandwich Plate
Authors: Wang Tao , Yu Wen Li , Dong San Qiang , Gao Yun Liang
Published: February 2012

In this paper, the penetration effect of a rhombic fragment penetrating sandwich in an oblique incidence with 30º impact angle at the velocity of 300 m•s-1, 350 m•s-1, 400 m•s-1, 450 m•s-1, 500 m•s-1 and 600 m•s-1 is simulated by LS-DYNA. The dynamic response and the damage patterns of sandwich plate and the movement rules of the rhombic fragment are acquired. The ratio of energy loss and the maximum resultant acceleration of the rhombic fragment are compared with that of the spherical respectively.
Material Properties Simulation Test and Safety Analysis on Hydrogen Reactor
Authors: Zheng Yue Fang , Du Hong Kui
Published: February 2012

This paper use a welding simulation plate to simulate the hydrogen reactor overheat process, and measure it’s mechanics properties, CTOD, da/dN. contrasting SA387 or 15CrMo character under normal temperature , hydrogen reactor material and safety condition may be identified.
Numerical Simulation and Response Surface Optimization of Oil-Gas Separator
Authors: Wan Chang Dong
Published: February 2012

CFD (computational fluid dynamics) is a good method for simulation of the oil-gas separator. When the volume concentration is less than 10%, the oil particle tracks can be simulated by DPM （Discrete Phase Model）. The results show that the separation efficiency is obviously affected by the diameter of separator air-outlet, the diameter of separator oil-outlet, and the angle of separator cone. But the quantified analysis on separation efficiency is difficultly brought forward by CFD. RSM (response surface methods) can help to identify factors influencing the responses by experiments. Finally, the optimum responses and design parameters will be obtained altogether.
Applied Research of Pantograph Carbon Slide Formulation Optimization Based on Genetic Neural Network
Authors: He Ze Heng , Cai Xiu Yan , Hu Jing , Zhang Yu , Wang Yue
Published: February 2012

Applying BP neural network improved by GA to build a nonlinear multi-objective model between formulation ingredient and mechanical properties of electric locomotive pantograph carbon slide. And on the basis of test data improved neural network is trained; finally we can get a genetic neural network model. Therefore, when given specific formulation of carbon slide plate, it is able to predict the corresponding mechanical properties. The research shows that the trained genetic neural network can accurately predict relevant properties of carbon slide plate and be confirmed the practical significance of the algorithm.
Transformation of Natural Clinoptilolite to High Purity of Synthetic Zeolits
Authors: Wang Yi Fei
Published: February 2012

In this paper, the Chinese natural clinoptilolite was treated hydrothermally, with fusion with NaOH powder as pretreatment. High purity of zeolite Na-Y, Na-P and Na-A were identified as the reacted products, depending on the reaction conditions such as hydrothermal time and the Si/Al molar ratio in the gels. And their cation exchange capacity (CEC) are 257, 355 and 335meq/100g respectively, which are greatly higher than that of the natural zeolite (97 meq/100g). In the hydrothermal reaction, an interesting phenomenon of crystal transformation has also been found
An Energy Balanced Ad Hoc Multicast Routing Algorithm
Authors: Zhang Qi , Xiong Hai Jun
Published: February 2012

Multicast routing technology of Ad hoc network is a method of transferring specific data to a group of clients selectively; therefore, quality of the services is the key to evaluate the method. After the analysis of energy model and other routing algorithms ,an energy model and a balanced energy network multicast routing algorithm EBAMRA have been proposed in this article,. Experiments had been done, the simulation results show that this algorithm is feasible and effective, which provides a new and effective way of Ad hoc multicast routing technology.
Synthesis and Structure Characterization of some Triorganotin Esters of Heteroaromatic Carboxlic Acid and Crystal Structure of Triphenyltin Esters 5-Chloro-6-Hydroxynicotinic Acid
Authors: Gao Hong Tao
Published: February 2012

Reactions of (R3Sn)2O (R=Ph, 2-ClC6H4CH2, 2-FC6H4CH2, 4-CNC6H4CH2) with 5-chloro-6-hydroxynicotinic acid in 1/2 stoichiometry yielded eight triorganotin compounds. These compounds have been characterized by elemental analysis, IR and NMR spectroscopy. The crystal structures of triphenyltin esters of 5-chloro-6-hydroxynicotinic acid were determined by single crystal X-ray diffraction. In the compound, the tin atoms are rendered five-coordinated in a trigonal bipyramidal structure by coordinating though the three phenyl carbon atoms and two oxygen atoms one from carboxylate and other from the phenolic hydroxide. The resulting structure is one-dimensional linear polymers through an interaction between the O atoms of phenolic hydroxide and tin atoms of an adjacent molecule.
Preparation of Cationic Polyacrylamide-Grafted Starch Flocculant and its Application in the Treatment of Coal Slurry Wastewater
Authors: Gao Ming , Xu Zhi Qiang
Published: February 2012

A cationic polyacrylamide-grafted starch (St-g-CPAM) flocculant for the coal slurry wastewater, was prepared by using corn starch and acrylamide (AM) as monomers, ethylene methyl propenoyl trimethylammonium chloride (DMC) as cationic monomer through solution polymerization. The effects of initiator concentration, reaction temperature, and monomer concentration on percentage of grafting and the grafting efficiency were investigated. The results show that the optimal conditions of the polymerization are as follows: the monomer to substrate ratio of 2.5, AM:DMC ratio of 2:1, potassium persulfate of 3×10-3 mol/L, reaction time of 4h, the reaction temperature of 50°C. The additional dosage of St-g-CPAM is varying between 20 and 30 mg/L to obtain good flocculation capability
Simulation Research on the Coherence Properties of the Optical Fiber Source
Authors: Liu Cheng Xiang , Li Feng , Wu Xu
Published: February 2012

Based on Wiener-Khinchin theorem and Fourier transform, the coherence functions and the relevant parameters of various spectrums can be obtained from the simulation program. Through the analysis on the coherence properties of different spectrums, we also acquire the influence on the spectrum coherence of its characteristic parameters, such as the centre wavelength and the width. For the broadband sources used in the IFOG, the paper provides an effective calculation approach to acquire the accurate coherence functions and coherence parameters, which can be further used to analyze and optimize the SFS spectrums.
Sound Field Distribution Research of Polymer Materials Ultrasonic Probe Chip Polymer Materials
Authors: Zhang Qi , Chen Rong Bao , Li Xuan Yu , Chen Chang Hua
Published: February 2012

Compared to the probe based on conventional piezoelectric ceramic, the high-performance ultrasonic probe made from polymer composite materials is much better, which has characteristics such as high sensitivity, wide bandwidth and good directional. And probe’s thickness electromechanical coupling coefficient KT value is up to 68%, which means it can reduce the crosstalk effectively to the phased array probe. In industrial, due to its high bandwidth, it has obvious advantages when used in coarse-grained materials testing and high-precision thickness measurement. In the medical field, ultrasound will reflex significantly at the impurities or the interfaces, and produce the Doppler effect in the flow of blood. Based on the sound field distribution comparative study of polymer materials ultrasonic probe chip, this paper proposed some polymer new applications in ultrasonic testing field.
Speed Regulation Strategies of PMSM Based on Adaptive ADRC
Authors: Gu Wen , Wang Jiu He , Mu Xiao Bin , Xu Sheng Sheng
Published: February 2012

To the speed-regulation system of permanent magnet synchronous motor (PMSM), this paper presents a active disturbances rejection controller (ADRC) based on the adaptive theory. First, the inertia information will be obtained by identification. Then, ADRC is designed by combining an adaptive algorithm. The controller can realize the adaptive parameters adjustment according to the inertia information, which is called adaptive ADRC. Simulation results have confirmed this control strategy can effectively improve the stability and robustness of PMSM.
The Strength and Elongation of the SP-PVA/Combed Cotton Blended Yarn
Authors: Yang Xiao , Yang Qing Bin
Published: February 2012

In order to understand the relationship between the tensile property and the blended ratio of SP-PVA/combed cotton blended yarn, the tensile properties of SP-PVA/combed cotton blended yarn with different blended ratio were measured. The experimental data and the model value has remarkable difference.