bluuebunny/crossref_metadata_2025 huggingface dataset:
GPS Tracking System for Low Maintenance Application
Authors: Abdulaziz H. , Nik Yusoff N.M.K. , Abu Talip M.H
Published: December 2011

A GPS tracking system utilizing the license-free RF communication is proposed as viable alternative to using the available GSM network for low-cost maintenance. The proposed system is designed based on the popular 8-bit embedded system. It consists of a monitoring unit and a remote unit. Each unit is equipped with, among others, a GPS receiver and an RF transceiver as main components. While there is a need for the remote unit to be small and compact, the monitoring unit is also designed as a portable device. Prototypes are built for design verification. Initial functionality test shows that the system is capable of tracking mobile object not only in outdoor but also in indoor environment.
Influence on the Excited Converter Capacity of Variable Speed Dual Stator-Winding Induction Generator System by Excited Capacitor
Authors: Shi Xian Jun , Liu Ling Shun , Wang Zhen
Published: December 2011

Excited capacitor of power winding has much influence on the capacity of excited converter of dual-winding induction generator. The capacity of excited converter can be optimized by changing the excited capacitor. The influence law of the capacity of excited converter by variable excited capacitor are compared under variable speed and variable load recured to simulation methods.
Simulation of Whisker Sensor in Robotic Assisted Beating Cardiac Surgery
Authors: Li Meng , Gu An , Yang Sheng Yi , Lu Chang Jian
Published: December 2011

A novel method was presented to measure the motion of the heart with the whisker sensor in robotic assisted beating cardiac surgery. The whisker sensor is a flexible, high-precision，low stiffness contact sensor designed for real-time accurate measuring heart motion. The sensor tip can be in continuous contact with the surface of the heart, which can actively cancel the relative motion between the surgical instruments and the surgical site on the beating heart. The proposed highly sensitive sensor employs a linear position sensor connected to two flexible cantilever beams that are attached orthogonally with a ridged joint. The theoretical formula was derived from the mechanical model which established based on the classical mechanics of materials．Finally，finite-element simulations were done with the ANSYS to prove the feasibility and validity of the method.
Asymmetrical Decoupling Model of Six-Phase Autotransformer and its Application
Authors: Gao Lei , Tong Wei Ming , Meng Fan Gang
Published: December 2011

In order to analyze the effect of asymmetry of phase-shift transformer on 12-pulse ac-dc converter, this paper sets up a decoupling model of delta-connected autotransformer. Via analyzing coupling circuit of autotransformer, the relation among branch voltage, branch current, node voltage and node current is built, and base on the relation, an admittance matrix containing the information about the connection way and electrical quantities is concluded. Utilizing the matrix, the proposed model is established. Simulation and experimental results show the validity of the model when simulating the asymmetry of delta-connected transformer
Optimization Design and Motion Simulation of Offset Slider-Crank Mechanism
Authors: Qu Er Guang , Zhang Hui Peng
Published: December 2011

On the basis of optimization-based design goals, design variables, constraints, the Offset slider-crank mechanism mathematical model of optimization is established, its parameters are designed by MATLAB Optimization Toolbox and achieve the best. The closed-loop vector equation of the Offset slider-crank mechanism is established based on the vector method, using MATALB/Simulink for simulation of kinematics to get the slider's motion curve. The method improves the efficiency and quality of design and motion analysis, the result shows that the method is efficient and useful in the design and kinematics analysis of mechanism.
Numerical Study of Large Defection of Functionally Graded Beam with Geometry Nonlinearity
Authors: Soleimani A. , Saadatfar M.
Published: December 2011

The equation of large deflection of functionally graded beam subjected to arbitrary loading condition is derived. In this work assumed that the elastic modulus varies by power function in longitudinal direction. The nonlinear derived equation has not exact solution so shooting method has been proposed to solve the nonlinear equation of large deflection. Results of shooting method are validated with finite element solutions. The method will be useful toward the design of compliant mechanisms driven by smart actuators. Finally the effect of different elastic modulus functions and loading conditions are investigated and discussed.
An Electromagnetic Frequency Increased Vibration Energy Harvester
Authors: Ashraf Khalid , Khir Mohd Haris Md , Dennis John Ojur
Published: December 2011

This paper presents an impact-based frequency increased electromagnetic vibration energy harvester to scavenge energy in a low frequency environment. To realize the novel impact based frequency up-conversion mechanism, a coil has been elastically anchored with a platform on which four permanent magnets are arranged in such a way that a strong closed magnetic flux path, linking the coil, is formed. The proposed scavenger has two dynamics of motion. The first phase is a low frequency oscillation to absorb energy from ambient vibration during which both the coil and magnet act as proof mass and move collectively. The increased proof mass ensures maximization of absorbed energy. After crossing a certain clearance, the platform containing magnetic setup rigidly and supporting the coil elastically, collides with a rigid stopper and bounces back. As a result of this mechanical impact a high frequency oscillation is setup in the coil relative to the magnets during which energy is transferred to electrical domain by electromagnetic induction. A macro-prototype has been build to prove the proposed concept. Initial test results show that the proposed harvester generates a peak voltage of 1 volt across a load of 220 Ω at an excitation frequency of 5 Hz which corresponds to a peak power of 4.5 mW and average power of 660 µW.
A Theoretical and Experimental Study on Temperature Dependent Characteristics of Silicon MEMS Gyroscope Drive Mode
Authors: Feng Rui , Qiu An Ping , Shi Qin , Su Yan
Published: December 2011

The prototype of the silicon micro gyroscope is introduced. Temperature is the key factor that affects the performance of the gyroscope. In this paper, temperature dependent characteristics of silicon micro gyroscope drive mode is analyzed. The theoretical results show that temperature coefficient of the Young’s modulus is the most critical factor that affects temperature characteristics of the silicon micro gyroscope’s drive modal frequency and the frequency is proportional to the temperature. The results are verified by finite element simulations. The silicon micro gyroscopes are experimented in a high accurate thermostat. The drive modal frequency and temperature are measured and sampled. These experimental results show that the temperature coefficient of Young’s modulus is the key factor and the frequency is proportional to the temperature. The theoretic analyses are also validated by the experiments.
Research and Test of the Digital Phase Locked Loop Drive Technology for Silicon Micro-Machined Gyroscope
Authors: Wang Yu Liang , Han Shuang Wei , Li Hong Sheng , Liu Hao
Published: December 2011

A program of digital phase locked loop (DPLL) drive is proposed to supply the gaps including debugging complex, easiness of interference and poor flexibility in the traditional analog drive loop of the silicon micro-machined gyroscope (SMG). The program, i.e. field programmable gate array (FPGA) is utilized to process the drive sensitive signal of the SMG after the analog to digital (A/D) processing of high-precision, has been utilized to achieve phase and amplitude closed-loop of the SMG’s drive mode. The simulation and test results show that the program has a great advantage to reduce the requirements on quality factor compared with the original program. When the gyroscope with a low quality factor is not easy to vibrate by the analog self-excited drive circuit, the program is adopted to reach drive mode’s frequency stability of 18ppm.
Silicon-Based Micro Pulsating Heat Pipe for Cooling Electronics
Authors: Qu Jian , Wu Hui Ying
Published: December 2011

This paper reports a micro-pulsating heat pipe (micro-PHP) fabricated in a silicon wafer that consists of trapezoidal microchannels with a hydraulic diameter of 394μm for electronic cooling applications. Electronic liquid FC-72 was used as the working fluid. To evaluate the maximum temperature reduction of the evaporator wall, experimental results of the vertical and horizontal-located micro-PHP at filling ratios ranging from 47% to 62% were compared with those measured from the empty micro-PHP (0% filling ratio). Results show that incorporating a micro-PHP as an integral part of silicon wafer could significantly decrease the maximum wafer temperatures and reduce the intensity of localized hot spots. At a power input of 6.0W, reductions in the evaporator wall temperature of about 32.3°C and 24.4°Cwere obtained for the micro-PHP at vertical and horizontal orientations, respectively. In addition, a CCD camera was employed to record the fluid movement inside microchannels and affirmed the existence of nucleation boiling and bulk circulation flow in the micro-PHP.
A Method for Atomic Vapor Cell Fabrication with Cavity by Laser Drilling
Authors: Xu Jian , Gan Zhi Yin , Lv Qiang , Liu Sheng
Published: December 2011

Atomic vapor cell is the most important component for atomic clock. A few vapor cells were fabricated based on multi-stack anodic bonding with four fabrication methods. By comparing with three traditional cavity fabrication methods and the first failed method by the laser drilling, it was found that the surface contamination induced in laser drilling and the roughness blocked the successful bonding. The surface roughness has to be less than 8 nm and in this case the method of laser drilling can be used successfully and with high efficiency, resulting in a novel process for atomic vapor cell fabrication with cavity.
Influence of Addition the Al Power on the Tensile Shear Loads in Resistance Spot Welding of TC4/AZ31B
Authors: Hu Xin Bin , Mei Zhang Qiang , Li Li Qun , Luo Ping , Dong Shi Jie
Published: December 2011

The tensile shear loads in resistance spot welding of TC4/AZ31B with addition Al power have been investigated in this paper. The results showed that the tensile shear loads with and without addition Al power were 2.636 KN and 3.692 KN when welding current was 9800A , respectivly. And the values changed 2.971 KN and 4.167 KN when the welding current was 11300A, respectively. Morphology characteristics of the welding zone were studied by scanning electron microscopy (SEM), energy dispersive spectrometer (ESD). The results suggested that the addition of Al power on the sheets of TC4 and AZ31B increased much in the tensile-shear loads when welding TC4 and AZ31B by RSW.
Vision Based Control of Micro-Fluid Dispensing for Surface Mount Technology
Authors: Chen Cong Ping , Dong Xiao Gang , Qin Wu , Fang Zi Fan
Published: December 2011

Due to the complicated behavior of the dispensing fluid and have no effective method to measure the micro-fluid value dispensed online, controlling the micro-fluid dispensing process has proven to be a challenging task in achieving a high degree of consistency in the amount of fluid dispensed. To enhance the dispensing performance and get a high consistency, this paper presents the development of a model for prediction the amount of fluid dispensed. Based on the model, a vision based control strategy is then developed to improve the consistency in the amount of fluid dispensed. Experiments were conducted to verify the effectiveness of the control strategy.
Effective Parameters on Elastic Modulus of Polymer/Clay Nanocomposites
Authors: Saadatfar M. , Soleimani A.
Published: December 2011

In this work a two dimensional finite element model is developed to simulate the fully exfoliated Polymer/Clay nanocomposite behavior and evaluate its’ elastic modulus. The influence of elastic moduls of matrix and clay on the elastic modulus of exfoliated Nylon 66 /clay nanocomposite is investigated with the aid of numerical simulations. Results show good agreement with experimental data from literature.
Measure Research in Organization Intellectual Capital on ANP
Authors: Wang Xiao Wen , He Jin Sheng
Published: December 2011

The weight of knowledge assets in company’s value was high in knowledge economy. The substantive knowledge assets came from intellectual capital in companies, and how to measure organization’s intellectual capital had been an important study in management field all over the world. In the base of network structure of organization’s intellectual capital, the Analytic Network Process can bring us not only the quantity of a companies’ intellectual capital or the rate of the intellectual capital in several companies, but also the sort order in the determinants of intellectual capital in companies.
Enhancing the Output Power of Vibration Based Electrostatic MEMS Energy Converters for Energy Scavenging Systems
Authors: Basyoni Marwa S. Salem , Zekry A.A. , Ragai H. F.
Published: December 2011

This paper introduces three methods to increase the output power of the vibration based electrostatic MEMS energy converters. This will be done by taking the effect of the parallel capacitance of the converter in the output power equation. In addition the output power of the converter will be increased by two other ways: Firstly, by depositing dielectric materials on the sidewalls of the converter fingers, secondly, by increasing the converter thickness. In addition the output power will be increased to an optimum value by combining the effect of increasing the device thickness and depositing dielectric materials on the sidewalls of the converter fingers.
Obstacle Avoidance and Navigation of Autonomous Mobile Robot
Authors: Raja Rekha , Shome S N. , Nandy S. , Ray R.
Published: December 2011

This paper presents a hybrid obstacle avoidance methodology for autonomous navigation of a mobile robot in an unstructured environment. Decision is taken based on the classical method depending on the environmental scenario where the space between multiple obstacles is measured and the feasibility of passing the robot through any immediate pair of obstacles examined. In other cases, the decision is taken by the Fuzzy Logic controller. The developed algorithm is simulated and experimentally validated with a mobile robot platform equipped with forward-looking sonar for obstacle detection. Odometry sensors assist in localization of the mobile robot. The developed algorithm is found adequately intelligent to navigate the robot from any start position through to the desired goal position avoiding obstacles, and without taking recourse to any pre-built map. The simulated results exhibit fair agreement with the experimental results.
Two-Degree-of-Freedom Helicopter Closed-Loop Identification through a Cascade Controller
Authors: Ghalei Pouya , Fatehi Alireza , Arvan Mohamadreza
Published: December 2011

Input-Output data modeling using multi layer perceptron networks (MLP) for a laboratory helicopter is presented in this paper. The behavior of the two degree-of-freedom platform exemplifies a high order unstable, nonlinear system with significant cross-coupling between pitch and yaw directional motions. This paper develops a practical algorithm for identifying nonlinear autoregressive model with exogenous inputs (NARX) and nonlinear output error model (NOE) through closed loop identification. In order to collect input-output identifier pairs, a cascade state feedback (CSF) controller is introduced to stabilize the helicopter and after that the procedure of system identification is proposed. The estimated models can be utilized for nonlinear flight simulation and control and fault detection studies.
A Fuzzy Logic Based Automatic Control of Rotary Crane (A Simulation Approach)
Authors: Sharma Rajbir , Rana Dinesh Singh , Gaur A.M
Published: December 2011

In this paper, our aim was to the control the Rotary crane by using Fuzzy logic. For this one must obtain the mathematical model of the crane. After obtaining the model, the dynamics of the crane is identified. The Rotary crane is to be controlled in such a manner to increase the system speed without compromising the stability and safety of the whole system. Also the load is transferred to desired location accurately. The main advantage of Fuzzy based control is that no parameter identification is required as compare to other control strategies available. There are some applications where the conventional control strategies cannot provide the desired response up to certain level. But the fuzzy logic based control is capable of enhance the response, since it has learning capability which helps to create the accurate rules for each separate conditions. Also this fuzzy based control will reduce oscillations of payload to prevent hazards for people and equipments in the work place, industries.
Optimal Control of Shallow Water Flows Using Adjoint Equation Method
Authors: Samizo Yu , Kawahara Mutsuto
Published: December 2011

This paper presents a method to control a flow behavior using the first-order adjoint equation method. A flood causes large-scale and extensive damage to the human property. It is expected that the damage can be suppressed to minimum if the water level or velocity of the river can be controlled. Therefore, the optimal control of a water flow is carried out in this study. In the control theory, the performance function which is defined by the square sum of the discrepancy between the computed and the objective water elevation at the target points is used. The extended performance function is given by the performance function and the state equation. The first-order adjoint equation can be derived by the condition that the first variations of the extended performance function and constraint condition are zero. The gradient of the extended performance function is obtained by solving the first-order adjoint equation. As the minimization technique, the weighted gradient method is applied. The shallow water equation based on the water velocity and elevation is used as a state equation. As the spatial discretization, the stabilized bubble function is employed. As the temporal discretization, the Crank-Nicolson method is applied. In numerical studies, the optimal control of water elevation in the Ikari dam lake is carried out. In this research, the optimal water velocity sent by the pump to minimize the water rise in the Ikari dam lake is computed. The inflow boundary conditions are presupposed as sinusoidal wave water elevation. The results of optimal control is performed effectively.
Improving Robot-Human Communication by Integrating Visual Attention and Auditory Localization Using a Biologically Inspired Model of Superior Colliculus
Authors: Ravulakollu Kiran Kumar , Erwin Harry , Burn Kevin
Published: December 2011

Effective agent communication is always been an important modern area of research. This paper focuses on achieving greater precision in common by improving agent-human communication with the help of visual attention and auditory localization based on a simple model of the superior colliculus in the human brain system. The model receives individual visual and auditory sensory stimuli and combines them to generate an integrated stimulus predicting the location of the sound source. This integrated stimulus is used to generate a motor saccade of the visual system to attend to the sound. The computational model is based on a neural network approach with learning and is explored in experiments reflecting varied conditions to determine whether it mimes the performance of superior colliculus in auditory and visual stimuli integration. Finally with a evaluation strategy carried between unimodal and multimodal data, the efficiency of the computational model of Superior Colliculus is determined. Performance of the neural network based computational model has proven effective in terms of learning, the better performance of the integrated response over unimodal response and providing a realistic communication experience.
Smooth and Safe Nearness-Diagram (SSND) Navigation for Autonomous Mobile Robots
Authors: Mujahed Muhannad , Jaddu Hussein
Published: December 2011

This paper addresses further enhancements of the earlier developed Smooth Nearness-Diagram Navigation (SND) method for mobile robots moving in complex and cluttered environments. The enhanced method, entitled SSND, improves the safety of paths generated by the SND and solves the problem of trapping the robot in narrow corridors, where the difference in the number of threats on its sides is high. This is achieved by adjusting the difference in the number of obstacles on the two sides of the robot heading direction. The power of our method is demonstrated by simulation results.
An Investigation of Molecular Interactions between Zinc Phthalocyanine Thin Film and Various Oxidizing Gases for Sensor Applications
Authors: Jaisutti Rawat , Osotchan Tanakorn
Published: December 2011

Molecular interaction between zinc phthalocyanine (ZnPc) thin films and various oxidizing gas molecules was examined by measuring sensor response of chemiresistor structures. The different response types can be obtained from the interactions to gas molecules of nitrogen dioxide (NO2), sulfur dioxide (SO2) and carbon monoxide (CO). For NO2 interaction, the response current of thermal evaporated ZnPc thin film with metal inter-digitaged pattern electrodes was proportionally increase to the concentration of NO2 gas. For measurement cycle, the NO2 gas at desired concentration was flowed into the measuring chamber for 20 minutes then the nitrogen gas was flowed for 20 minutes to recovering the interaction. The current response exhibited the step up and down during this measuring cycle and the heights of response step were proportional to the NO2 concentration. For SO2 measuring cycle, the response step increased at the beginning cycle then the response of ZnPc thin film seemed to be saturate and remained the same response step height even increasing the SO2 concentration. It was found that if the SO2 concentration was maintained at the same value for each measuring period, the response current was increase for the first few cycles after that the response step height decreased and became almost constant at lower value after passing more than ten measuring cycles. However this phenomenon can recover if the ZnPc surface was leaved in air for a few days. Therefore the interaction between ZnPc and SO2 molecules can modify the ZnPc surface and change the gas response. With the same measurement setup, it cannot found any significant change in the response current of the ZnPc film under the CO gas exposure up to concentration of 250 ppm. This result indicated that no interaction between ZnPc and CO molecules can be observed and these different responses on various gas molecules can demonstrate the selectivity of using ZnPc as a gas sensor.
Anti-Control of Chaos of Linear Continuous-Time Systems with Unknown Parameters Using Adaptive Control
Authors: Akhgari Farzaneh , Rahmani Zahra , Rezaie Behrooz
Published: December 2011

In this paper, a feedback control method is proposed for the anti-control of chaos of linear controllable systems based on model-matching. First, it is considered that the linear system is completely known and an anti-control method is designed. Then, the parameters of the linear controllable system in companion form are assumed to be unknown. The chaotification is achieved choosing an appropriate control law and a parametric updating law based on Lyapunov stability theory, which provides the stability of the resulting adaptive system and the convergence of the tracking errors to zero. The proposed method is applied to anti-control of chaos of a linear system, while the Rössler chaotic system is the reference model. The numerical simulation results show the effectiveness of the proposed method.
Design of Gain Scheduled Multivariable Controllers for a Nonlinear Process
Authors: Kamala N. , Thyagarajan T. , Renganathan S.
Published: December 2011

In this paper, Genetic Algorithm is utilized to optimize the coefficients of a decentralized PID controller for a nonlinear Multi-Input Multi-output process by minimizing the Integral Absolute Error (IAE).The controller is tuned at chosen operating points, which are selected to cover the nonlinear range of the process. The optimal PID controller parameters are gain scheduled using a Fuzzy Gain scheduler. The effectiveness of the proposed control scheme has been demonstrated by conducting simulation studies on a Continuous Stirred Tank Reactor (CSTR) process which exhibits dynamic nonlinearity
Research on Parameters of Bonnet Polishing Based on FEA
Authors: Wang Chun Jin , Yang Wei , Guo Yin Biao , Wang Zhen Zhong , Zheng Mao Jiang
Published: December 2011

In this paper, according to the bonnet polishing technology, in order to get the change regularity of the bonnet’s deformation, the inflated deformation model of the bonnet, which is made all of rubber or made of rubber but with a nylon enhancement layer, is established and analyzed by using the FEA simulation. And then, by simulating the process of the bonnet polishing the plane wafer, it achieves the contact pressure curve which varies with the bonnet decrement. According to the Preston equation, k can be acquired through the experiment, v can be achieved through mathematical modeling, and p has been achieved in this paper. Thus, the removal function based on FEA will be acquired.
Effect of Advanced Static VAR Compensator on Control of Power System Load Shedding
Authors: Rao B. Venkateswara , Kumar G. V. Nagesh , Kumari R. V. S. Lakshmi , Kumar M. Vinay
Published: December 2011

This paper investigates the effect of Static VAR Compensator (SVC) on power system load shedding. SVC is mainly used in power system stability improvement. This paper proposes a new use of SVC to reduce load shedding. An algorithm of Newton Raphson method (NR) to reduce the load shedding for installing SVC in the system is proposed in this paper. 5 bus test system example is used to demonstrate the effect on load shedding. The test results show that the effect of SVC is significant, in this Static VAR compensator (SVC) is incorporated in Newton Raphson method in which Power Flow Solution is a solution of the network under steady state conditions subjected to certain constraints under which the system operates. The power flow solution gives the nodal voltages and phase angles given a set of power injections at buses and specified voltages at a few, the model of SVC i.e. SVC Susceptance model is discussed. It is also shown that the power system losses are decreased after incorporating the SVC in this N-R method. The results are generated for 5-Bus system. By incorporating the SVC the amount of load shedding is reduced to get the voltages in their limits.
Predictive Control of Linear Stationary Stochastic Systems with Constraints
Authors: Saletović Enes , Mateljan Tadej
Published: December 2011

Within the frame of this work, the problem of control of LSS (Linear Stationary Stochastic) SISO (Single Input Single Output) systems with active constraints at input and/or output has been researched. Motivation to solving this problem comes from the fact that there is no universal solution to the problem even LSS SISO systems with constraints are very common in practice. Defined control problem is solved using characteristics of LSS SISO systems and square forms. Considering that such systems are very common in practice, created solution would be widely applicable.
Security System and Surveillance Using Real Time Object Tracking and Multiple Cameras
Authors: Kachhava Rajendra , Srivastava Vivek , Jain Rajkumar , Chaturvedi Ekta
Published: December 2011

In this paper we propose multiple cameras using real time tracking for surveillance and security system. It is extensively used in the research field of computer vision applications, like that video surveillance, authentication systems, robotics, pre-stage of MPEG4 image compression and user inter faces by gestures. The key components of tracking for surveillance system are extracting the feature, background subtraction and identification of extracted object. Video surveillance, object detection and tracking have drawn a successful increased interest in recent years. A object tracking can be understood as the problem of finding the path (i.e. trajectory) and it can be defined as a procedure to identify the different positions of the object in each frame of a video. Based on the previous work on single detection using single stationary camera, we extend the concept to enable the tracking of multiple object detection under multiple camera and also maintain a security based system by multiple camera to track person in indoor environment, to identify by my proposal system which consist of multiple camera to monitor a person. Present study mainly aims to provide security and detect the moving object in real time video sequences and live video streaming. Based on a robust algorithm for human body detection and tracking in videos created with support of multiple cameras.
Kinematic and Singularity Analysis of 3 PRR Parallel Manipulator
Authors: Selvakumar A. Arockia , Karthik K. , Kumar A.L. Naresh , Sivaramakrishnan R. , Kalaichelvan K.
Published: December 2011

Three degrees of freedom (DOF) parallel manipulator is used in the applications such as base for various machining operations, drilling inclined holes, airplane and automobile simulators, walking machines, pointing devices, contour milling and machining etc. The 3 DOF parallel manipulator consists of a fixed platform and a movable platform, which are connected by means of three identical links. Pin joints are used to connect the one end of the link and the lead screw pair. This 3 DOF 1R2T parallel manipulator is having one orientation freedom and two translational freedom, which is actuated by means of screw pair, which in turn operated by a stepper motor. The inverse kinematics and velocity equations of this mechanism have been derived mathematically. Based on this inverse kinematics and velocity equations singularity analysis is completed. Two kinds of singularities are compared with ADAMS simulation results and a prototype of the manipulator is developed for further study.
Inverse Kinematic Analysis of a Hexapod Spider-Like Mobile Robot
Authors: Ghayour Mostafa , Zareei Amir
Published: December 2011

In this article a proper mechanism for a hexapod spider-like mobile robot is presented. By using of geometrical method, inverse kinematic of the robot is analyzed. In further via differential kinematic, velocity of the joint variables is specified. Then inverse kinematic of the robot is solved for a specific motion and the related results are shown and analyzed.
Research on Steering Control and Simulation of Vehicle Steer-by-Wire System
Authors: Qiu Xu Yun , Yu Ming Jin , Zhang Zhu Lin , Ruan Jiu Hong
Published: December 2011

A simulation model of Steer-by-Wire(SBW) is built, including steering motor model, steering executive system model, vehicle model and Fiala tire model. Based on the Linear Active Disturbance Rejection Control(LADRC) technique, a kind of control algorithm on steer angle of vehicle SBW is designed. On the simulation system, the control algorithm is simulated and test. The results show that the LADRC controller can implement high precision and strong robust control effects on steer control of vehicle SBW system.
Mobile Based Security and Control System Using Python s60
Authors: Raveendran Arun , Joy Jency K.
Published: December 2011

This paper proposes a mobile phone based security and control system for home appliances through SMS/Bluetooth. It focuses on controlling home appliances remotely, and providing security with good graphical user interface. The system uses GSM technology, providing ubiquitous access to the system for security and automated appliance control from anywhere around the globe. The system provides security against intrusion using a smarter digital lock which notifies owners in case of an unauthorized via SMS message, as well as facilitates both short and long-range device control using Bluetooth or SMS technology. Rather than a conventional method of sending an SMS message to control devices, a graphical user interface is designed using Python S60 language for ease of use. The control signals in the form of SMS messages are encrypted and restricted to unique mobile phones or SIM cards for improved security.
A Portable Method to Improve the Performance of Commodity Servers for Massive Data Delivery
Authors: Fukunaga Takafumi
Published: December 2011

With the progress of a Multi Core technique, the number of processes, which are executed concurrently on the server, has been increasing. Accordingly, the amounts of data transmitted by the servers, which deliver a large amount of data to many clients like VOD servers, also have been increasing dramatically. However, the powerful interconnection networks (Myrinet [1], Infiniband [2], etc.) are expensive without exception. Then this paper proposes the low-cost (low-priced and easy-work) method to improve the bandwidth performance. The method achieves it by bringing out the hardware performance of multiple GbE ports installed on the server. Due to advents of low-priced Multi GbE Ports Card and PCI Express slots, it is easy to install multiple GbE ports to the server. In addition, the method offers equal service (bandwidth) to all clients.
FPGA Based Embedded Implementation of Video Summary Generation Scheme in Smart Camera
Authors: Singh Sanjay , Dunga Srinivasa Murali , Mandal AS , Shekhar Chandra , Chaudhury Santanu
Published: December 2011

In any remote surveillance scenario, smart cameras have to take intelligent decisions to generate summary frames to minimize communication and processing overhead. Video summary generation, in the context of smart camera, is the process of merging the information from multiple frames. A summary generation scheme based on clustering based change detection algorithm has been implemented in our smart camera system for generating frames to deliver requisite information. In this paper we propose an embedded platform based framework for implementing summary generation scheme using HW-SW Co-Design based methodology. The complete system is implemented on Xilinx XUP Virtex-II Pro FPGA board. The overall algorithm is running on PowerPC405 and some of the blocks which are computationally intensive and more frequently called are implemented in hardware using VHDL. The system is designed using Xilinx Embedded Design Kit (EDK).
Innovation Drivers Analysis of the Medium and Small-Sized Enterprises in Jilin Province
Authors: Dong Ben Yun
Published: December 2011

As an important force of innovation, SMEs’ innovation ability directly affects the process of innovation in China. Innovation activities of SMEs in Jilin Province reflected unclear innovation strategy, inadequate investment, lack of creative talents and so on. Technology Innovation of motivation can be divided into external motivation and internal motivation. In the the lower stage, innovative depends on external motivation and in the the higher stage, innovative depends on internal motivation. External motivation includes external technical systems self-renewal, market competition and government policy guidance. While internal motivation includes the mission of entrepreneurs, corporate middle backbone technology innovation passion and the enterprise culture of innovation.
The Inexact Rayleigh Quotient Iteration for the Large Hermitian Matrix Eigenproblem
Authors: Qu Qing Guo
Published: December 2011

The inexact Rayleigh quotient iteration (RQI) is used for computing the smallest eigenpair of a large Hermitian matrix. It’s shown in this paper that under the uniform positiveness condition a new convergence theorem of the inexact RQI is presented and proved by the nature of eigenvalues. All the results are verified and analyzed by numerical experiments.
Research on the Relationship of Government Fiscal Revenue and Social Security Expenditure
Authors: Li Hong Lang
Published: December 2011

The rapid growth of China’s economy since reformation has attracted worldwide attention, among those various types of reformation, the measure of central government’s delegation of its financial power to local government is considered as one of the important factors that contribute to the astonishing economic growth. However, this measure also caused competition among regions as well as differences among each region in economic scale. In China with a ageing population structure, social security expenditure is always an important item among its local financial expenditures, and the burden of local finance. This article mainly researches whether various fund expenditures in security system are affected by the differences of development level and economic scale among each province, city and area in China. It summarized the development history of China’s security system, analyzed its problems existed, and summed up the relationship between social security system and government fiscal revenue.
Implications from Swarm Simulation on Industrial Clusters’ Evolution
Authors: Wang Tao , Zhang Yon Gan , Jiang Wei
Published: December 2011

This paper argues that the phenomenon of industrial clusters is a kind of complex and dynamic process. With the heterogeneity of firms involved in clusters and their open connections with external environment being reasonably justified, the paper thinks that the evolution of industrial clusters should be observed and studied by the approach of computer simulation. Some factors from inside or outside, local or global, work together to drive the growth and decline of industrial clusters. Some implications are drawn through the analysis of the results by simulations designed on java-swarm platform. Suggestions are proposed accordingly.
Simulation of High Knudsen Number Gas Flows in Nanochannels via the Lattice Boltzmann Method
Authors: Isfahani A.H. Meghdadi , Soleimani A. , Homayoon A.
Published: December 2011

Using a modified Lattice Boltzmann Method (LBM), pressure driven flow through micro and nano channels has been modeled. Based on the improving of the dynamic viscosity, an effective relaxation time formulation is proposed which is able to simulate wide range of Knudsen number, Kn, covering the slip, transition and to some extend the free molecular regimes. The results agree very well with exiting empirical and numerical data.
A New Calibration Approach of Orientation Dependent Gain and Phase Uncertainty of Sensor Array Using Temporal Information
Authors: Yong Sun , Geng Dao Tian , Xu Jie , Zhao Hong Yan
Published: December 2011

In this paper, the virtual temporal sensors is introduced to function as those physical sensors, and a new approach for array calibration using temporal information is proposed, which possess a high accuracy while its computation burden is low. Theory analysis and simulation results are presented to demonstrate the performance of the proposed method.
Temperature Effects on Performance of Industrial Robots Made of Composite Materials
Authors: Ristea Alin , Aurel Oprean
Published: December 2011

Industrial Robots design is always a challenge in terms of the materials being chosen for manufacturing the mechanical elements of the robots. The present paper is a theoretical study on the effects of temperature to the positioning precision of the robots with mechanical elements having composite materials in their structure. A case study was made on a SCARA industrial robot structure.
Reduce Positioning Error for Robot Manipulator with Intelligent Technique
Authors: Barati Maryam , Khoogar Ahmad Reza , Nasiriyan Mehrzad
Published: December 2011

Using robot manipulators for high accuracy applications require precise value of the kinematics parameters. Since measurement of kinematics parameters are usually corrupted with errors and their accurate measurements are usually expensive, automatic calibration of robot link parameters makes the determination of kinematic parameters much simpler. In this paper a simple and easy to use algorithm is introduced for correction and calibration of robot kinematics parameters. Actually, at several end-effecter positions, the corresponding joint variables are measured simultaneously. This information is then used in three different algorithms; the Least Square (LS), the Particle Swarm Optimization (PSO) and the Genetic algorithms (GA) for automatic calibration and correction of the kinematics parameters. This process was also tested experimentally using a three degree of freedom manipulator which was actually built as a coordinate measuring machine (CMM). The experimental Results show that the intelligent algorithms provide better results for both parameter identification and calibration of the link parameters.
The Reserch on PID Control Modle of the Components Working Accuracy for Slender Shaft on the NC Lathe
Authors: Wang Yu Kun , Lu Jun , Xi Hong San
Published: December 2011

In this article, a PID control modle of working accuracy is constructed to control the processing process，regarding the closed loop manufacture system as a black box and the processing error as system deviation. A slender shaft with a surface is turned,the control points of the error compensation can be abtained by a probe.Based on the CAM technology，an automatic programming system is developmented to control the processing process.Through a set of comparative experiments,the detaction and the analysis of datas confirmed the validity of the PID control modle,validated the accuracy of the slender shaft can be improved by the PID control modle.
Parameter Identification of Elastic Modulus of Rock Based on Blasting Waves in Tunnel Excavation
Authors: Motoyama Yuto , Kawahara Mutsuto
Published: December 2011

The objective of this research is to present an identification method for elastic moduli of ground rock, through the first-order adjoint equation method using the measurements of the blasting vibration in tunnel excavation. Parameter identification is a minimization problem of the square sum of discrepancy between the computed and observed velocities. For the identification of these parameters, the magnitudes of the blasting force should be identified beforehand. In this study, propagation of an elastic wave is assumed because the amplitude of such a wave is infinitesimal. After the identification of the blasting force, the elastic moduli of three layers are identified simultaneously. We assume that the damping of vibration is linear. By applying the identification technique at the Ohyorogi tunnel site, we verify that the method is useful for tunnel excavation. Using measured data from actual tunnel excavation sites, the numerical identification method presented in this paper is shown to be useful for practical tunnel excavation.
Influence of Doping Concentrations of Sol Gel Derived Zn1-xMnxO Thin Films
Authors: Rashid Affa Rozana Abdul , Menon P. Susthitha , Shaari Sahbudin
Published: December 2011

Undoped and Mn doped ZnO films with different percentage of doping concentration (2%, 4%, 6% and 8%) were synthesized by sol gel method with an annealing temperature of 400°C. As to investigate the physical properties and microstructures, the samples are characterized using FESEM. The surface morphology images on the films showed many spherical shaped nanoparticles and separate uniformly. Meanwhile, the optical properties were characterized using UV-Vis where the transmittance and band gap value were affected by certain amount of Mn concentration. These films achieve tunable band gap characteristics by means of changing the dopant concentration. At lower concentration, 2% and 4% of Mn, the band gap is reducing compare to undoped ZnO. At higher doping for 6% and 8% of Mn, the bang gap suddenly increased.
A Study on the Mathematic Model of Nox Emission in Coal-Fired Boiler with Opposed Combustion Pattern
Authors: Liu Bao Ling
Published: December 2011

The perfect mathematic model is critical to reseaech the NOx emission charateristic. In this paper, a new statistical learning algorithm SVM(support vector machine) was used to establish the model, based on the mechanism analysis of the NOx emission characteristics, and grid optimization method was applied to determine the model parameters. The model was tested on a 660MW power plant ,and the result indicated that SVM was a good tool for building NOx emission model and had better generalization ability and higher calculation speed comparing with BP modeling approaches.
Rule Generation for Recruitment Decision Analysis-A Granular Approach
Authors: Sarkar Suvobrata , Banka Haider
Published: December 2011

The main aim of this paper is to analyze the various recruitment decision making policies using granular computing based on rough set perspective and fuzzy distance approach for recruiting a candidate in any organization. An information table has been presented in this article which consists of various factors like appearance, qualification, experience and communication skills to evaluate a candidate for recruitment. Depending upon the granularity of knowledge obtained from the information table, the concept of rough set has been applied to generate fuzzy decision rules which in turns form the eligibility criteria for the candidates appearing in the interview for recruitment. The experts in the interview committee have stated their opinion about the candidates linguistically. A relationship has been established between the eligibility criteria required for the job and the expert opinions about the candidates appeared in the interview using a fuzzy subset representation. The index of fuzziness of various experts’ opinion are measured and compared. A candidate with higher grade of merit has been selected using fuzzy distance approach.
Analysis of Process Interactions in Dynamic System Using Frequency Dependent RGA
Authors: Jain Amit , Babu B.V.
Published: December 2011

A frequency dependent approach to defining a dynamic relative gain array (DRGA) is discussed. The approach assumes the availability of a dynamic transfer function based process model for control loop pairing analysis. Two examples are considered: one in which the traditional RGA (based on steady-state gain matrix) gives the correct pairing recommendation and the other in which the traditional RGA suggests wrong pairings particularly in the frequency range of interest. The calculations pertaining to analysis of control loop pairing is performed using MATLAB (version 7.0.1). An inaccurate indication of the amount of interaction present is discussed. The first example uses 2x2 transfer function model [1] and the second one uses 3x3 transfer function model [2].
Effect of the Amount of Channel Black on Underwater Property of PU Material
Authors: Wang Xu Wen , Zhang Yong Bing , Lin Xin Zhi , Sun Ying Fu
Published: December 2011

Effect of the amount of Channel Black on underwater property of PU material is researched by adding Channel Black into PU material. The results show that the amount of Channel Black has most effect on underwater property of PU material. In one atmospheric pressure, the underwater property of PU material is worst when the amount of Channel Black is 60, while the underwater properties are not evident when the amount of channel is 30 and 45. In lower underwater pressure, effect of the amount of Channel Black on underwater property of PU material is almost difference. In higher underwater pressure, the underwater property of PU material is best when the amount of Channel Black is 45, while 30 is second, and 60 is lowest.