bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Characteristics and Key Design Parameters of a Pilot-Assisted Load Control Valve
Authors: Liu Jian Bin , Xie Hai Bo
Published: March 2014

This paper reports the simulation and experimental results of a type of widely used load control valve. The investigated load control valve is usually applied to the mobile crane booming hydraulic circuit. It is used to balance the overrunning load due to gravity and to modulate the flow of oil when lowering the load. The load control valve has a significant influence on the performance of mobile crane booming system. A simulation model of the load control valve is established based on AMESim, moreover, a bench-test is conducted to evaluate the performance of the load control valve. The simulation results and the experiment data agree well and both results show a good performance of the valve. Further study of the effect and the inner principle of the key design parameters of the load control valve are also presented.
Controlling Chaos by Bounded Self-Controlling Function Using Butterworth Filter Feedback
Authors: Du Lin , Jia Fei Lei
Published: March 2014

Using the bounded sigmoid function and two-order Butterworth low-pass filter, a self-controlling feedback method for regulate the motion of a chaotic system is presented in this paper. It is shown that such controller has the advantage of being easy to implement based on the measurable input signals. A rigorous stability proof is provided from LaSalle Invariance theorem. Furthermore, the effectiveness and efficiency of the proposed feedback control strategy is illustrated by means of the numerical simulations of two-well Duffing Vander Pol oscillator. Finally, the result reveals that the enough large maximum amplitude results in a more possible regular domain in parameter space of the controlled oscillator.
Tuning of PID Controller for the Integrating Systems
Authors: Liao Hong Kai , Hu Yi Chao , Luo Jia , Zhang Xi , Chen Shi He , Li Dong Hai
Published: March 2014

According to the idea of the system identification, 2-DOF PID based on the desired dynamic equation (DDE-PID) has been improved. The DDE-based PID is applied to the integrating system. This method only needs the step response information of the plant, which is easy to be obtained. According to the physical meaning of parameters, the tuning is also convenient to meet the requirement of the dynamic performance. The simulations show that the method has the low overshoot and the short setting time on the integrating system.
Research of the Servo Motion Control of Wave Maker
Authors: Su Lin Fang , Zhang Ai Feng , Liang Xiao
Published: March 2014

This paper expatiated a system that was irregular wave maker in wave flume. It was the first time to apply ROCKWELL companys products and motion control technology into the wave-maker system. Firstly, We designed a series of function modules for control system. Then gave the relevant programming flowchart. Secondly, we intruduced the ROCKWELLs softlogix5800 series controller and Ultra3000 series driver in the application of make-wave system. Finally, the system had been successfully applied to the test of scientific research.Compared with the method of simulation control , this servo motor-driven irregular wave machine system have high precision, stable operation, wiring simple. Generally speaking, it provides the practical significance with certain practical foundation and experience for future projects.
A Design of Control Strategy for Chaotic Systems with Time-Delay
Authors: Xu Jiang , Li Tao
Published: March 2014

In various kinds of feedback control, delayed control is an important topic for chaos control, which deserves more thorough researches. However, only a few researchers take in to account that whether the delayed feedback control (DFC) can be employed to control chaotic systems with time-delay. To investigate the control strategy, a stabilization problem of unstable fixed points in the discrete time-delay system is taken into considerations in this paper. Based on our conclusion, it is obvious that the odd number limitation property existing in the system without delay also exists in the time-delay one while the DFC is employed to stabilize the unstable fixed points. Second, based on the property of the root-locus diagram, a developed DFC strategy is proposed to release the limitation. The numerical simulation results validate the effectiveness of our design and are in agreement of our analysis.
Characteristics Analysis of Proportional Control Valve on Vane Damp
Authors: Wang Wen Rui , Yin Yue Lei
Published: March 2014

The proportional flow control valve is not only one of the key competent of vane damp,but also the execution unit of shock absorber damping force's regulation .The proportional flow control valves self-designed will combine the structural design of proportional control valve and crate CFD model . The thesis analyzes its distribution of flow field by CFD and acquires experimental validation .It analyzes dynamic characteristics and determine the relationship of flow and opening and drive current. The proportional control valve test verifies the correctness, finally. It is basis for analyzing of damping characteristics about vane damp, which can be used other proportional control valve CFD study.
The Research and Application of AGC in Circulating Fluidized Bed Unit
Authors: Zhou Peng , Xin Xiao Gang , Chen Shi Hui , Guo Xiao Hong , Yang Chun Xia , Wang Biao
Published: March 2014

The circulating fluidized bed boiler (CFB) power unit with its energy-saving and environmental protection has broad application prospects, but the problem of CFB unit automatic control has not been solved satisfied, so automatic generation control (AGC) can not be stabilized input. Through the improvement of the unit automatic control strategy by the method of intelligent predictive multivariable decoupling control and optimization of parameters, the AGC tests achieved approving results in CFB unit.
Two-Phase Flow Field Numerical Simulation in Scrubber for Exhaust Gas Desulfurization
Authors: Dong Zhi Feng , Kuang Quan Jin , Gu Yong Zheng , Yao Rong , Wang Hong Wei
Published: March 2014

Calculation fluid dynamics software Fluent was used to conduct three-dimensional numerical simulation on gas-liquid two-phase flow field in a wet flue gas desulfurization scrubber. The k-ε model and SIMPLE computing were adopted in the analysis. The numerical simulation results show that the different gas entrance angles lead to internal changes of gas-liquid two-phase flow field, which provides references for reasonable parameter design of entrance angle in the scrubber.
Design and Implementation of Fault Detection Equipment of Certain Type of Microwave Range Finder
Authors: Wang Da Yong , Peng Jian Yi , Huo Xing , Li Guo Dong
Published: March 2014

Certain type of microwave range finder has been designed by adopting the technologies of DDS (direct digital frequently synthesis) digital signal synthesis and online signal detection, synthetically applying equal-accuracy frequency measuring method, automatic control of frequncy drift and quick interpolation method, combining WINDOWS API programming, Labview programing and fault disgnosis expert system. Eventually, accuracy verification and fault defect of microwave range finder are accomplished.
Indoor Human Detection and Monitoring System Using PIR Wireless Sensors Array
Authors: Boudjemaa Kheddar , Song Ping
Published: March 2014

This paper presents a design and implementation of an efficient and low cost system for indoor monitoring of human intrusion. The system design is based on the use of already available pyroelectric infrared passive sensors (PIR) that are able to detect thermal perturbation caused by moving objects within their field of view (FOV). Our design uses the PIR sensors in the geometric context as binary detectors with adaptive threshold estimation. The combined field of view of three PIR detectors is modulated by a custom designed lens mask to estimate the bearing angle of the single human intrusion. The prototype is formed by a sensing module routed wirelessly to another host module to visualize processed raw data.
A Secure Wireless Telehealthcare Monitoring System and its Web Application
Authors: Baig Mirza Mansoor , Hosseini Hamid Gholam , Luo De Han
Published: March 2014

Efforts to prepare for a growing number of elderly patients, reducing the escalation of healthcare costs, and avoiding hospitals emergency room overcrowding are some of the driving forces for adopting wireless healthcare monitoring systems. However, due to the open-to-air commination nature of multilayer wireless networks, it is important to consider reliability, accuracy, security and privacy of such data transmission. We have developed a low-cost and wireless telehealthcare system for monitoring of basic physiological parameters and automatically transmitting the measured data to an electronic patient record. It employs off the shelf wireless products and a secure web-based application which have been tested in a hospital with satisfactory outcomes.
Study on Star Shot Analysis for Physics Quality Assurance in Radiotherapy
Authors: Liu Ke , Bian Xin , Hou Li Xin , Zhou Xin
Published: March 2014

Star shot analysis is one common and important module in physics quality assurance (QA) which is regularly performed on the radiotherapy machine. A star shot analysis method by image processing is proposed. First, through ROI selection and image binarization, the irrelevant image parts are excluded and the star-shots are highlighted. Then the center and beam branches of the shots are determined by iteration, coordinate transformation, threshold values analysis and image segmentation. Finally, beam center lines and a minimum circle encompassing beam intersections are calculated by mathematic operations. The proposed method is performed on three star shot films and all beam center lines, beam intersections and minimum circles are obtained instantly and showed clearly. The results present good consistency with the commercial verification software and indicate that the proposed method provides the physicist a considerable comparison in physics QA.
Necessary and Sufficient Condition on Controllability and Reachability of Fractional-Order Linear Switched System
Authors: Deng Cheng , Zhu Wei
Published: March 2014

Fractional-order linear switched system (FLSS) is an important system of hybrid systems. In this paper, by using the analytical solution of FLSS, the necessary and sufficient condition on controllability and reachability of FLSS is given, respectively. The condition shows that if every subsystem is controllable (reachable), then the whole system is also controllable (reachable) for arbitrary switching rules. And if the whole system is controllable (reachable) for arbitrary switching rules, then every subsystem is controllable (reachable).
The Additional Side Force on the Force Transducer in the Combinatorial Load Cell
Authors: Wei Tie Ping , Yang Xiao Xiang , Yao Jin Hui , Xu Hang
Published: March 2014

By the reason of the additional side force acting on the force transducers affecting the rotation effect of the combinatorial load cell,the paper describes the effect of the spherical plain thrust bearings structure on the additional side force. A three-dimensional finite element model of the late-model high-accuracy combinatorial load cell was established and analyzed. From the results, it shows that the magnitude of the additional side force fluctuation increases with the height of the bearing base increasing. At the same time, the magnitude decreases with the friction coefficient of the inner and outer ring of bearing increasing. The results provide guidance for the design of the combinatorial load cell.
Numerical Simulation Research of Velocity and Temperature Fields in High Temperature Flow of Liquid Lend-Bismuth Eutectic
Authors: Li Yun Bo , Zhou Tao , Huo Qin Jun , Yang Xu
Published: March 2014

On basis of two-phase flow and the heat transfer theory, the velocity and temperature of the liquid lend-bismuth eutectic were calculated with gas-injection and without gas-injection by FLUENT code, in the calculation segment. The radial velocity profiles and temperature profiles were acquired at different cross section. Analysis results show that: no matter the argon is existence or not, the velocity distribution and the temperature distribution have a good symmetry. Temperature rise of the liquid lend-bismuth eutectic with gas injected is larger than without argon. It is shown that the gas-injection is good for heat transfer of liquid lend-bismuth in the calculation segment.
System Design of Greenhouse Temperature and Humidity Monitoring and Alarming
Authors: Zhang Li Cai , Hu Xue Lun , Wei Yao Guang , Chen Ying Yi
Published: March 2014

The production of greenhouse has become an important means to increase the income of China's rural areas and farmers, because the environment of greenhouses is controllable and the production is efficient. The temperature and humidity are the most important environmental impacts in the production of crop. The traditional regulation of the environment in greenhouses relies on artificial sampling detection which is inefficiency. Some advanced greenhouses use field wiring to implement the environmental regulation, but the environment is complex so field wiring is also a difficult problem. Aiming at solving the problem of monitoring the temperature and humidity in greenhouses, this paper designs a on-line monitoring system of greenhouses which is based on the wireless communication technology. The system adopts the DHT11 sensors to monitor the temperature and humidity in the greenhouse, and adopts the wireless communication technology of ZigBee so as to realize the online monitoring of the temperature and humidity. By using the wireless transmission and data acquisition nodes which are placed in different greenhouses can transmit the value of the temperature and humidity in greenhouses to the central node easily, and also realized the function of the online monitoring, alarm and transmitting data from different data acquisition nodes to the central node. The system consists of a data acquisition module, a wireless communication module, an alarm module and so on. The system is advanced because of its simple structure, small volume, low cost, easy operation, wide application range, strong scalability and so on. Compared with the traditional system, it can meet the demand of acquiring the temperature and humidity value of greenhouses in China.
Synthesis and Performance Evaluation on Amphoteric Surfactant of Dodecyl/Tetradecyl Phosphobetain
Authors: Cui Shi Cai
Published: March 2014

The phosphobetaine amphoteric surfactant of N, N-dimethyl-tridecane hydroxyethyl ammonium phosphate (PBET-13), was synthesized by using epichlorohydrin, NaH2PO4 and dodecyl/tetradecyl dimethyl amine and cetyl/octadecyl dimethyl ammonium as raw materials. The scale inhibition, interfacial tension and foaming performance of PBET-13 were studied. The results show that the surfactant has higher scale inhibition efficiency to CaSO4 than that of CaCO3. PBET-13 solution with the appropriate concentration of NaCl could reach to the ultra-low value of interfacial tension, and PBET-13 shows good foam performance.
Monitoring and Management of Source Water Pollution Based on a New Bio-Optoelectronic System in Jinan, China
Authors: Wang Xiao Guang , Ren Zong Ming , Ma Zhong Yu
Published: March 2014

A new bio-optoelectronic system, which included the behavior (aquatic organism) monitoring system and the water physiochemical factor monitoring system, was developed for the purpose of the management of accidental pollution events in water resource in Jinan, China. The system included a monitoring center and three monitoring stations. Communication between the monitoring stations and the monitoring center was mainly by the General Packet Radio Service network transmission complemented by a dial-up connection for use when this service was unavailable. The results suggested that once an accidental pollution occurred, the system would make a comprehensive evaluation based on the Self-Organising Map analysis on the monitoring data and some decision would be made based on the Emergency Management of Accidental Pollution. As a result, the new bio-optoelectronic system provided an effective approach on the management of accidental pollution events in drinking water supply.
The Measurement Method of Echo Highlights in Low Frequency
Authors: Hui Juan , Wen Shao Juan , Zhao An Bang , Niu Fang
Published: March 2014

Methods which are MVDR beam-forming, STMV beamforming and a method using MVDR beamforming with copy correlation are using to measure highlight of targets echoes at low frequency. Compared with conventional beam-forming, the three methods restrain noise and resist reverberation better. To reduce calculation, firstly, as the azimuth measured by using Split array cross-correlation beamforming the center, and then the neighboring area scanned using MVDR focused beamforming. Therefore, this highlight of echoes research measures have high precision and practical.
Temperature Drifts Compensation of Strain-Temperature Method for the Measurement of Continuous Welded Rail Temperature Force
Authors: Liu Chong , Zhang Hai , Wang Da Zhi , Zhou Wen Jing , Li Liang , Zhang Fu Sheng , Liang Jun Sheng , Ren Tong Qun , Wang Tian Rao
Published: March 2014

Temperature drift error usually exists in the strain-temperature measurement of continuous welded rail (CWR) temperature force. A piece of invar with low (close to zero) coefficient of thermal expansion is used to simulate the actual CWR. Then the temperature drift of the strain sensor node is measured by using a programmable temperature chamber. The temperature drift error is compensated during the monitoring of the temperature force in actual CWR. Results show that the measured temperature force vibration of the CWR is-681kN~149kN and the stress-free temperature vibration is-2.4~1.0°Cwithin a month after temperature drift error compensation. The temperature force and stress-free temperature after compensation meets the stability condition of the CWR.
Analysis the Thermal Field for the Liquid Floated Gyroscope and it's Simulation
Authors: Wang Zheng Jun , Yang Jian Zhong , Yang Yi Yong , You Zheng , Chen Fei Fan
Published: March 2014

In this paper, it is put forward a new kind of gyroscope and Theoretical analysis and simulation for it. it is based on the latest proposed a kind of MEMS gyroscope, the micro machine rotor of the liquid floated gyroscope in the thermal field has carried on the stress analysis and simulation. The magnetic field is a kind of drive, Gyroscope lumen is composed of stator and detecting electrode plates,it is filled with 2 # industrial white oil in the inner cavity body,2 # industrial white oil support this gyroscope of rotor . The measuring accuracy of the rotor is very high, and the rotor's drift stability is also greatly improved. But the rotor is governed by thermal field, it is still mentioned the main reason for the precision. For the generation of thermal field mainly comes from two parts: heat field and eddy heat. Comsol software is presented in this paper, the thermal field of the rotor were analyzed, and the current in the magnetic field to join 280 mA, 580 mA, 780 mA and 1800 mA, the temperature distribution for the magnetic field, the rotor's blow plate of temperature is less than the up plate of temperature; The rotor side wall is the highest temperature and its the lining is greater than the outer wall temperature; Around the rotor 2 # industrial white oil to join as the speed of 2500 rmp, 3500 rmp, 5500 rmp, 8000 rmp, because of the large flow rate, the eddy current is big, so the temperature increased. Two physical field coupling together to produce energy losses, affect the material performance, at the same time bring local vibration,this phenomenon results in the decrease of accuracy of measurement. Therefore, we need to change the rotor structure and materials to reduce the influence on measurement accuracy. At the same time for the next step, the stress analysis of rotor under the confined space for experiment platform test provide simulation data and the theoretical analysis.The sidewalls of the rotor machining into the radian of 0.05 mm.
Aircraft Free Flight Simulation in a Wind Tunnel
Authors: Elhashani Atahir , Kurban Adel , Agela Marwa L.
Published: March 2014

The Unmanned Ariel Vehicle Model is Mounted in the Wind Tunnel. where its Longitudinal Motion of Electric Propeller was Developed and Simulated as a Free Aircraft Flight. the Numerical Values of the Aerodynamic Stability and Control Derivatives are Evaluated via the Digital Tornado Algorithm. this Evaluation is Carried out Based on the Geometric Parameters of the Airplane, Aircraft Center of Gravity and Mass Moment of Inertia. the Stability and Response of the Linearized Longitudinal Model of the Considered Aircraft are Tested and Investigated. the Onboard Computer is Implemented Based on a Microcontroller Pic16f877a, where the Pitch Angle and Speed of the Considered Free Flight Vehicle are Read Respectively by an Gyroscope and Pressure Sensors. and the Microcontroller Read these Signals via Analog to Digital Converter which are in Turns as a Serial Digital Data by Using of Universal Synchronous Asynchronous Receive Transmit. Apply the Personal Computer to Receive the Serial Signal through the PC RS232 Standard as Serial Data. where in the PC, the Visual Basic Algorithm is Written as well in Order to Display and Plot the Pitch Angle Airspeed Responses on the Screen. Finally, the Experimental Results of Aircraft Free Flight in Real Time are Obtained by Carrying out the Simulation in the Wind Tunnel.
Comparison of FLAASH and 6S Code Atmospheric Correction on Snow Cover Detection in Akita Prefecture, Japan Using MODIS Imagery Data
Authors: Pan Pai Pai , Saruta Kazuki , Terata Yuki , Chen Guo Yue
Published: March 2014

In order to reduce the error, restore the real surface reflectance, in this work, FLAASH (Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes) model and 6S (Second Simulation of a Satellite Signal in the Solar Spectrum) code model were used to conduct the atmospheric correction for Terra/MODIS data of Akita prefecture in northeast of Japan. From the results of snow cover detection, the accuracy of without atmospheric correction is only 46%, with FLAASH model for atmospheric correction is 86% and the accuracy of with 6S code model for atmospheric correction is 92%. As experimental results show, compared to the snow cover detection without atmospheric correction, the snow cover detection accuracy was improved by 40% and 46% with FLAASH model and 6S code model for atmospheric correction respectively. In addition, the accuracy with 6S code model is higher about 6% than FLAASH model.
Experimental Study of Suppressing Vertical PS Fires Using Water Spray
Authors: Zhao Heng Ze , Zhang Yong Ming , Hu Hai Bing , Zhao Lan Ming
Published: March 2014

Water suppression experiments of EPS and XPS are conducted in Standard Combustion Chamber in USTC in Hefei. The 20 cm * 20 cm PSs were held against a 600 mm*600 mm vertical gypsum board fixed by a steel frame structures to simulate a building facade. A series of results have been obtained. When the water spray is not applied, the EPS is easier to melt, drip and pyrolyze than XPS under the same fire load, but causes less amount of CO than the amount of XPS without any water application. When the water is applied, neither EPS nor XPS has a trend to drip. The amount of CO caused by EPS or XPS under water spray is much less than that of non-spray. Also the extinguishment time falls fast once the PS materials are applied with water. In addition, these experimental results demonstrate the feasibility of the designed rig in studying the fire suppression on vertical PS materials using water spray.
A New Method for Evaluating the Profile of Large Paraboloidal Antennas
Authors: Jiang Yi Ran
Published: March 2014

In order to solve the problem of installation and measuring errors in the profile evaluation of large parabolic antennas, this paper proposes a new method for evaluating the profile of large paraboloidal antennas based on genetic algorithm and least square method. This method can effectively realize the adaptive adjustment of the measured points and the theoretical contour in the process of evaluating profile, which can eliminate the position error between the measured points and the theoretical contour that influences on the results of the profile evaluation. The availability of this method has been proved by simulation.
Face Milling Tool Wear Condition Monitoring Based on Wavelet Transform and Shannon Entropy
Authors: Zhang Min , Liu Hong Qi , Li Bin
Published: March 2014

Tool condition monitoring is an important issue in the advanced machining process. Existing methods of tool wear monitoring is hardly suitable for mass production of cutting parameters fluctuation. In this paper, a new method for milling tool wear condition monitoring base on tunable Q-factor wavelet transform and Shannon entropy is presented. Spindle motor current signals were recorded during the face milling process. The wavelet energy entropy of the current signals carries information about the change of energy distribution associated with different tool wear conditions. Experiment results showed that the new method could successfully extract significant signature from the spindle-motor current signals to effectively estimate tool wear condition during face milling.
Stability of Online Monitoring Stress for Shipbuilding Portal Crane
Authors: Niu Qing Liang , Tang Wei Xiao , Shan Nan , Zhao Xue Ping
Published: March 2014

The biggest problems of online monitoring stress for crane currently are the signal stability problem and the high cost problem. Aiming at these problems, the authors design the stability monitoring project for shipbuilding portal crane. The project adopts the wired monitoring method and the strain signal is amplified preliminarily at the measuring point, the combination of both which overcomes the problems of strain signal attenuation and electromagnetic interferences. The acquisition box is reset punctually to avoid the drift problem. An experiment of online monitoring stress for shipbuilding portal crane used for 5 years is done in a shipyard, and the experiment proves that the effective relative error is less than 6%. Compared with the wireless monitoring way, the project costs lower and isnt subject to electromagnetic interferences. Moreover, compared with the traditional wired monitoring way, the program has more stability signal.
Detection and Tracking of Vehicle Target Based on Super-Resolution Reconstruction and Variable Template Matching
Authors: Ma Jun Yong , Chen Shao Dong , Zhang Sheng Wei
Published: March 2014

Vehicle Target Detection and Tracking Method Based on Image Super-Resolution Reconstruction and Variable Template Matching is Put Forward. Firstly, a Nonlinear Iterative Algorithm is Applied to Reconstruct a Super-Resolution Image from Low Resolution Image Sequence; then, the Image is Standardized and the Movement Areas are Determined; Finally, the Variable Template Matching Method is Used to Detect and Track the Vehicle Targets in Movement Areas. from the Characteristics of Algorithm and the Experiment Results, we can see that the Proposed Algorithm Improves the Matching Accuracy of Target Tracking and Better Solves the Limitation of Missed Detection for Traditional Methods. the Reason of the Good Performance of the Proposed Algorithm Relies in High Quality Images Acquired by Super-Resolution Reconstruction from Low Resolution Image Sequence and the Application of Variable Template Matching Method.
Performance Study of Solar Trough Tracking Control System
Authors: Li Hai Li , Xu Cheng Mu , Ji Xu , Li Ming , Tan Li Jun
Published: March 2014

In this paper, the tracking accuracy of one-dimension north-south solar tracking system is analyzed. The method of indirectly measuring one-dimension north-south solar tracking system is given according to the variation of sun position, and the relevant formulas are derived. The experiment on measuring the relationship between tracking accuracy and thermal efficiency of trough system is also conducted. Experimental results show that the system tracking deviation is 0.04 0.065°; the peak of tracking deviation of trough system is 0.875°.
Study on the Parts Surface Defect Detection Method Based on Modifed SVM Algorithm
Authors: Zhang Feng Ying , Liu Rui Juan
Published: March 2014

In this paper, we propose an efficient parts surface defect detection method using SVM algorithm, and particle swarm optimization is used to make parameters selection for SVM. The proposed parts surface defect detection systems is made up of six parts, and the main ideas of our method lie in that we exploit computer vision and machine learning in the research field of mechanical manufacturing and automation. We convert the parts surface defect detection problem to the classification problem, and the images of parts surface are used as testing samples. The SVM algorithm regards the classification problem as the constrained optimization problem. The classification accuracy is determined by the quality of parameters selection. Hence, particle swarm optimization is exploited to make parameters selection for SVM by defining two fitness functions. Afterwards, the best particle of the current population and the gbest is obtained. Utilizing the output from the particle swarm optimization then the parameters for SVM can be obtained. Finally, experiments are conducted based on a dataset with 563 samples, and experimental results illustrate that the proposed is quite effective for parts surface defect detection.
An Agent-Based Load Balancing Approach for RFID MiddleWares
Authors: Wei Zhen Gang , Sun Xi Zhou , Wang Xiao Hua
Published: March 2014

For company to extend their RFID applications ceaselessly, the fundamental challenge is how to satisfy enterprise applications more effectively, while avoids mainframe server purchased and existed servers leave unused. It needs to decentralize work by using several RFID middlewares. So load balancing method is required for preventing centralization work in certain RFID middleware. In this paper, as a solution of tackle the challenge, we proposed a new load balancing approach based on mobile agent for RFID middlewares, which includes: information gathering policy, transfer policy, selection policy and location policy, and three agents are developed: load-info monitoring agent (LIMA) compliant to monitoring local host workload status; load-info gathering agent (LIGA) compliant to gather local and global load information; load transfer mobile agent (LTMA) compliant to choose the independent set and the appropriate scheduling scheme and implement the relocation work.
Mixed Integer Linear Programming for UAV Trajectory Planning Problem
Authors: Zhang Lei , Zhou Zhou , Zhang Fu Ming
Published: March 2014

This paper describes a method for vehicles flying Trajectory Planning Problem in 3D environments. These requirements lead to non-convex constraints and difficult optimizations. It is shown that this problem can be rewritten as a linear program with mixed integer linear constraints that account for the collision avoidance used in model predictive control, running in real-time to incorporate feedback and compensate for uncertainty. An example is worked out in a real-time scheme, solved on-line to compensate for the effect of uncertainty as the maneuver progresses. In particular, we compare receding horizon control with arrival time approaches.
Position Estimation in Singly-Fed Electrostatic Actuation Systems by Superposing Sensing Signals
Authors: Yamamoto Akio , Suzuki Junro
Published: March 2014

A built-in position sensing circuit for a singly-fed electrostatic actuator, where only the stationary element has voltage feeding wires, is discussed. The sensing is realized by superposing a high-frequency sensing signal onto the actuating wires. The paper mathematically analyzes its operation and discusses potential problems from the experimental results. The problems are vulnerability of the sensor operation to the change of impedance of the actuating power sources and to the gap variation. Electrode segmentation is proposed as a possible solution.
The Supporting Scheme Selection of Deep Foundation Pit Based on Fuzzy Optimization Theory
Authors: Yang Zi Sheng , Tao Ji Xiao , Pan Hong Ke , Li Yong Tao
Published: March 2014

In order to get a quantitative and simple supporting scheme of deep foundation pit, this paper creatively develop a simplified method of supporting system selection based on the fuzzy optimization theory. The simplified method determines a preferred equation of the supporting system at first. Then the best solution is selected based on the preferred equation. Based on the simplified method, the analysis of the foundation excavation for Chuangye Dasha in Taiyuan has been performed. The result of the analysis shows that the method is reasonable and scientific.
Implementation of the Dynamic Tension Load of Cell Membrane and its Stress Analysis
Authors: Hu Wen Ji , Yu Yu , Zhou Ji Xiang , Tang Xue Bin
Published: March 2014

Cell stress experimental study is currently a domestic and overseas research hotspot. Related research findings are widely applied to study the proliferation, activation, and functional status of cells when they are faced with deformation under physiological or pathological condition. It is of great significance to study the motion and status of cell and extra-cellular matrix under different stresses, for this may help us to further discover the re-build law of cell tissue, and to figure out corresponding remedy mechanism [. In order to disclose the relation between cell tissue proliferation activation result and the magnitude, property, affection duration and frequency of cell stress, so as to further reveal the proliferation and activation law of cell tissue, a dynamic stress with adjustable frequency and pressure is exerted. Hence, we developed a membrane-type variable stress wave cell membrane dynamic tensile stress test system [2-. The test system is designed to experimentally research several cell samples bearing stress from the same source at the same time, which is able to offer a required static pressure on tested cell tissue, as well as cell membrane experiment stress wave with certain variable frequency (0-20 times per minute) and adjustable magnitude. How to load dynamic tensile stress on cells is a key problem to be solved in cell culture test system. In allusion to the problem, a mechanical model is constructed in this paper, so as to analyze related mechanical features. On this basis, the stress and strain distribution law of various points on cell membrane is figured out. This has provided theoretical basis for area selection and design of cell seeding, experimental research on cell stress and result analysis.
Modeling and Analysis of the Manufacturers Inventory in Closed-Loop Supply Chain
Authors: Ma Le , Chai Yi
Published: March 2014

In this paper, the closed-loop supply chain inventory management as the research object, based on traditional inventory theory forward and reverse supply chain will be presented by combining deterministic closed-loop supply chain manufacturer's optimal inventory policy, determined by calculating the optimal production lot and do sensitivity analysis.
Gas Sensors Fabricated by Aerosol Deposition
Authors: Hsiao Chun Ching , Luo Li Siang
Published: March 2014

Zinc oxide (ZnO) is a low toxicity and environmentally friendly material, and it is applied on devices, sensors or actuators for trending towards green-life. A porous ZnO film deposited by a rapid process of aerosol deposition (AD) was employed as the gas-sensitive material in a CO gas sensor for reducing the manufacturing cost and time, further extending the AD application. A relative resistance change (R / R) of the ZnO gas sensor was used for CO gas measurement. The sensitivity of the fabricated ZnO gas sensors had a more outstanding performance about 49%, compared to the literature data reported by Joshi.
Robust Design – A Case Study in a Research and Development Company
Authors: Kowang Tan Owee , Long Choi Sang , Heng Low Hock , Rasli Amran Bin Mohd
Published: March 2014

The paper aims to explore how organizations in the transition phase of co-location to multi-locations production environment applied Robust Design approach to accommodate the complexity of manufacturing and assembly operation in multi-location production environment. By using a single case study method on a home appliances Research and Development (R&D) Company, this paper examines the detail of design and operational transformations within the organization at pre and post implementation stage of Robust Design. The paper starts with enlightenment of issues faced by the company that drove the move to explore the application of Robust Design, follows by illustrations on how Robust Design concept is re-configured and executed across the product design process within the company. The paper subsequently reviews operational impact driven by the implementation of Robust Design, this is followed by discussion and recommendation for improvement. Result from the case study suggested that top management commitment is the key success factor for the implementation of Robust Design in Research and Development firm. In addition, the case study offers an alternative and effective approach to develop a robust system within design and development environment.
Research of Prediction Model of Operating Condition of Loom
Authors: Fan Ya Bin , Zhu Jie , Song Jian Wei , Zhang Wen Qing , Liu Xu Ning
Published: March 2014

In order to carry out effective management on the operation of loom, a new approach is proposed to predict the operating condition of the loom. Firstly, the mathematical basis of Bayesian network is made, so a kind of abbreviated forecasting formula is proposed. Secondly, Bayesian model is made to predict the operating condition of the loom, and the related parameters of the model are estimated by processing real time data in the process of loom production. The practice has shown that the Bayesian prediction model has good results, and Bayesian network is more fit for the operating condition of the loom, which is of great value to judge the operating condition of the loom.
Design of Flexiable Manufacturing System Based on Practical Application of Engineering Training
Authors: Fan Hong Mei
Published: March 2014

The flexiable manufacturing system is an automated machinery manufacturing system which could adapt the changable processing object. In this paper, a flexiable manufacturing system based on practical application of engineering traning is introduced. The general scheme of this FMS and its work processes are presented. The control system is designed and its functions are described in details. Results show that the FMS achieves a satisfactory effect.
Modeling and Analysis of the Bullwhip Effect in Remanufacturing Closed-Loop Supply Chain
Authors: Ma Le , Chai Yi , Zhang Ying Ying , Zheng Lu
Published: March 2014

In this paper, the closed-loop supply chain bullwhip effect as the research object, according to the bullwhip effect value comparison shows the existence of reverse supply chain can reduce the bullwhip effect, and recovery products rate is higher, the effect of reducing the bullwhip effect is more obvious. In demand mutations conditions, recovery products rate higher the bullwhip effect in favor weakened. In the random demand conditions, with the recovery products rate increases, suppliers bullwhip effect decreased significantly.
A Study of Morphology of Titanium Powder Used in Electron Beam Melting
Authors: Mohammadhosseini Afshin , Fraser Darren , Masood S.H. , Jahedi Mahnaz
Published: March 2014

Electron beam melting (EBM) has been recognized as a revolutionary manufacturing process. This layer-by-layer additive manufacturing process has shown great promise for fabrication of biomedical implants and aerospace components. This paper represents an investigation into the particle size distribution, morphology and flow-ability of Ti6Al4V powder used in EBM process. The effect of recycling of the powder on the chemical properties has been investigated. Results show that recycling increases the weight percentage of interstitial elements. The flow-ability and apparent density of the powder were measured before and after recycling process and no change was observed.
Mineral Composition and Performance of Phosphoaluminate Clinker with Addition of SO3
Authors: Yang Shuai , Wang Shou De , Dong Xiao Nan , Liu Bo , Gong Chen Chen , Lu Ling Chao
Published: March 2014

The effect of SO3 on the mineral composition and performance of phosphoaluminate clinker was investigated by means of XRD, IR and SEM. Also, the compressive strength of clinker was performed. The experimental results showed that a certain amount of SO3 would promote the formation of calcium phosphoaluminate mineral, which was good for the strength development of phosphoaluminate clinker. Moreover, the addition of SO3 was benefit to the formation of C4A3 in phosphoaluminate clinker. So, the 5% dosage clinker owns a good strength development.
Error Analysis of Natural Vibration Characteristic of the Diamond Wire Saw
Authors: Wang Fei , Huang Bo , Zhang Jin Sheng , Wang Zhi , Zhang Heng
Published: March 2014

As diamond wire saw machining device, the vibration characteristics of beaded rope has important implications on the processing quality and the service life. Based on it, this topic used the Galerk and complex modal method to research the changes of natural frequency of lateral vibration characteristics under different parameters, and comparative analyzed the effect of two methods on the natural vibration characteristics. Firstly, through an analysis on vibration mechanics model used complex modal method, the author obtained the exact solution of natural frequencies under different parameters, after that, utilized the Galerkin method to discrete the system vibration equations for getting the first N natural vibration characteristics. According to comparative analyzed the natural vibration characteristics of two algorithms, the results showed that, using appropriate Galerkin method will obtain more accurate solutions,as well as provide theoretical support on suppressing the vibration of beaded rope.
A Preliminary Study on the Effect of WEC Cleaner Papermaking Chemical on the Improvement of Paper Physical Strength
Authors: Zhu Yong Qiang , Gao Feng , Cao Ping , Zhang Zhan Jun
Published: March 2014

In this paper, the stiffness and folding endurance of the paper were investigated with three kinds of pulp, such as the mechanical wood pulp, chemical pulp and composite pulp, after using common additives and cleaning additives. The results indicated that the stiffness of the paper can be increased by 20% ~ 30% and folding endurance can improve 20% ~ 60% after using new kind of cleaning additives no matter what kind of filler. New cleaning additives can not only improve the physical properties of paper, but also change "acidic papermaking" of the traditional paper industry into clean neutral papermaking environment. Especially, it is suitable for the production of food card paper.
Research on the Decoating Effect and Microstructure of Surface Damage of High-Pressure Waterjet
Authors: Guo Qi , Jia Xiu Jie , Li Shuo , Nie Yan Yan , Ge Shun Xin
Published: March 2014

The high-pressure water jet is utilized to perform impact test on coated surfaces with different hardness. The decoating effect is measured and the surface roughness change can be tested by White-light Interferometer (WLI). Also the microstructure of surface damage after impact test is analyzed. The result shows that when utilizing high-pressure water jet to clean the coating, it’s a better choice to start at the place where the coating is broken. The gap will be enlarged rapidly and the decoating velocity will increase linearly. Otherwise, the impact of water jet will cause surface damages and generate holes of particular shape. This kind of hole is flat in the middle, then forming a sunken district and apophysis successively along the radius outwards.
Synthesis, Characterization and Property of Nano Rare Earth Terbium Complex with Gatifloxacin
Authors: Lv Yu Guang , Zhang Li , Lv Kui Lin , Zhou Shu Jing , A Du , Zheng Ji Hui , Jiao Peng , Hou Jia Yu , Zhu Yui
Published: March 2014

Rare earth metal complexes have special characteristics, such as extremely narrow emission bands and high internal quantum efficiencies, which are suitable to be used as the emission materials, chemistry and biological technology. Ternary nano complex of terbium gatifloxacin phenanthroline was synthesized.The composition and structure of ternary complex were characterized by element analysis, Mass Spectrometry (MS), UltraViolet Absorption Spectrometry (UV) and fluorescence spectra(FS). The influences of solubility, thermal stability and luminescent properties of complex as well as addition of phenanthroline secondary ligands on the fluorescence spectra of the ternary complexes were studied. The results of fluorescence spectra analysis showed that partial energy was transferred from Characterization to terbium ions by intramolecular energy transfer processes, meanwhile, the addition of phenanthroline can effectively increase the luminescence intensity of terbium icons. The complex possessed well luminescence and showed characteristic emission peaks of Tb3+ under UV light excitation and emitted strong green fluorescence. Moreover, in an ITO/PVK/Tb(GFLX)3Phen/Al device, Tb3+ ion can be excited by intramolecular ligand-to-metal energy transfer process. The main peak of emission at 545 nm is attributed to 5D0→7F2 transition of the Tb3+ ion, and this process results in the enhancing green emission. Biological actrivity properties of the rare earth complex was well studied.
Production of Phenolic Compounds from Low Temperature Catalytic Fast Pyrolysis of Biomass with Activated Carbon
Authors: Zhang Zhi Bo , Ye Xiao Ning , Lu Qiang , Dong Chang Qing , Liu Yong Qian
Published: March 2014

Activated carbon (AC) was reported as a promising catalyst to selectively produce phenolic compounds from biomass using the micro-wave assisted catalytic pyrolysis technique. In order to evaluate the catalytic performance of the AC under the traditional fast pyrolysis process, analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) technique was applied for the catalytic fast pyrolysis of biomass mixed with the AC. Polar wood was selected as the feedstock, and experiments were conducted to reveal the AC-catalyzed poplar wood pyrolysis behavior and product distribution. The results indicated that the AC was also effective for the phenolics production in the traditional fast pyrolysis process at 350 °C. It could promote the formation of phenolic compounds, and inhibit most of the other pyrolytic products. The maximal phenolics yield was obtained at the biomass to catalyst ratio of 1:4, with the peak area% over 50%.
Performance Evaluation of Polymer Microspheres for Profile Control and Oil Displacement
Authors: Wang Kai , Fang Ji Chao , Wu Xiao Ming
Published: March 2014

In this paper, the law of hydration expansion of polymer microsphere and the plugging rate of polymer microsphere under condition of different influencing factors such as hydration time, mass concentration, and permeability are studied. The applicable conditions are optimized as following: The optimum hydration time, mass concentration, and formation permeability through laboratory experiment is 5 days 3000 mg/L~4000 mg/L, permeability under 4 um2 respectively. Finally, oil displacement experiment is carried out under laboratory conditions. The results show that the enhancement in oil recovery obtained in core flow experiment is about 7 %, which suggests that it has a wide application prospects in tertiary oil recovery.