bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical and Electrical Control System Design Based on Adaptive Control Theory
Authors: Li Ying
Published: August 2013

A parallel model reference adaptive control system was designed for reaching the optimal control effect and performance in the electrical control system based on the adaptive control theory. The control weighting coefficient was adjusted precisely in real time with the adaptive control theory for the matching and transmission of the self-performance and the out information, and the performance of the control system could reach optimal performance. But on the other hand, the adaptive control theory hadnt is applied in the torpedo control system. An improved electrical control system algorithm was proposed in this system based on the adaptive control theory. The torpedo control system was taken as the example, the parallel model reference adaptive control system was designed. The hardware circuit diagram of the control system was designed. And the control algorithm of the three-channel such as the pitch, yaw and roll of the torpedo control system was designed separately. And the output signal of the system and the software system of the three-channel torpedo control system was simulated. The design result and the simulation result show that the control performance is stable and the software system shows nice performance of human-computer interaction property and good perspective of application performance.
Study on Utilizing Customer Reviews through Knowledge Integration Approach
Authors: Ma Biao , Yuan Tian Tian , Chen Cheng
Published: August 2013

Nowadays, customer reviews or comments have become a golden mine for B2C companies. How to exploit these reviews more effectively has attracted researchers attention. This paper proposal a new approach of utilizing the reviews, which integrates the reviews unstructured information based on fuzzy cognitive maps and nonlinear Habbian learning. The approach aims to provide an effective way of generating a comprehensive evaluation of an online store.
Impacts of Community Sports Station on the Sports Activities of Elderly People
Authors: Fu Hong
Published: August 2013

Beijing Olympic Games promotes the rapid development of our community sports, and community sports provide plenty forms of physical exercise activities for the masses. The community sports provide a broader stage for China's sports undertakings while enriching people's amateur lives. Currently, the community sports stations are lack of professional sports instructors and the publicity of use-method of the sports equipments. In order to solve these problems, this paper investigates and analyzes the impacts of community sports stations on excises time and sports activities of 500 elder people in 25 communities in Chengdu. In the analysis, multiple linear regression method is adopted. The results show that the community sports stations extend exercise time and change the sports custom of the elder people and bring the communicating platform of sports. However, it is different for the elder people to choose fitness equipment when lack of professional instructors. Therefore, it is recommended to add professional instructors in order to improve the service efficiency of the sports equipments and promote the sports activities of the elder people.
RBF Neural Network in the Application of Synthetic Tower Temperature Decoupling Control Research
Authors: Zhang Zhe , Hao Li Jun , Ma Bing
Published: August 2013

The chemical production is vital to the development of our country.It is greatly significant to improve the ammonia synthesis production control project and to increase the economic returns. In allusion to a controlled object with coupling characteristics,in this paper RBF neural network decoupling controller is designed to realize the decoupling control of the synthetic tower temperature. Through the comparison of the simulation test results, the scheme shows that it has a better control effect than the conventional PID decoupling control method, so, if the scheme could be used in the actual chemical production process, it shall have a certain value in use.
Prediction on Vehicle Crash Acceleration Based on Circle of Constant Acceleration Method
Authors: Liu Zhi Xin , Zhang Yue , Wei Ming Jiang
Published: August 2013

Vehicle crash acceleration was essential for automotive passive safety analysis. Especially in CAE analysis and sled test, B-pillar lower accelerations are considered as vehicle acceleration and often used as crash pulse to reproduce the real crash conditions. But for frontal offset impact, the magnitudes and directions of the B-pillars lower accelerations were significantly different,which made the selection of vehicle acceleration very complicate. In this paper,a prediction algorithm based on Circle of Constant Acceleration method that can calculate the acceleration of any point on vehicle was presented. And then it is verified with the full scale impact data. The results show that both the trend of the acceleration curves and the curve peak of the calculated value have a strong consistency with the measured value.
Research on Driving Simulator in early Warning System of Vehicle Rear-End Collisions
Authors: Yan Jing Ming
Published: August 2013

Road safety has drawn wide attention from the whole society in recent years. The system of collision warning and anti-collision as an emerging vehicle safety technology can effectively help drivers avoid rear-end accident. This paper uses driver assistance system to analogously simulate true condition of driving and road. By real-time monitoring safe distance between two vehicles under the condition of following, this paper optimizes and adjusts the existing simulator. Drivers can avoid some untimely happening or unnecessary warning through improved and optimized simulator, which provides crucial technical conditions for producing more controlled and real-time interactive simulator.
Monitoring Software of the Nano-Positioning Control System
Authors: Zhou Yue , Su Yan Qiang , Pian Jin Xiang , Yao Xiao Xiao
Published: August 2013

In order to realize the functions such as the real-time monitoring of running status, the system performance analysis and the parameter optimization set and download, this paper designed the monitoring software of the nanopositioning control system. The unified modeling language was adopted to analyse and design the monitoring software modularly, and the software consisted of the USB communication module, the performance analysis module, the displacement module, the calibration analysis module and the parameters configuration module. Through testing the control system, the experimental results showed that the monitoring software is reliable and stable, and add multiple analysis functions. It is operated conveniently and meet the users needs.
Non-Fragile Guaranteed Cost Control for a Class of Uncertain Time-Delay Switched Singular Systems
Authors: Luo Yue Sheng , Xu Man , Zhang Shi Lei , Li Tong , Liu Chun Fang
Published: August 2013

The problem of robustly non-fragile guaranteed cost control for a class of uncertain time-delay switched singular systems under arbitrary switching laws is considered. By means of matrix equivalent transformation and the relationship between the norm and the matrix, based on linear matrix inequality tools, a sufficient condition on the existence of non-fragile guaranteed cost state feedback controllers is derived, which ensures that uncertain time-delay switched singular system is admissible, and a corresponding cost index can be guaranteed. The design problem of the non-fragile guaranteed cost controller can be turned into the feasibility problem of a set of linear matrix inequalities. Finally, an illustrative example is given to demonstrate the effectiveness of proposed method.
The Vibration Characteristics Analysis of Miter Gate Based on ANSYS Workbench and Vibration Test
Authors: Zhao Xin Ze , Wang Rui Feng , Wang Jie , Zhao Mei Yun
Published: August 2013

The 3d model of miter gate has been set up based on skeleton model of Pro/E, and it has been imported into ANSYS Workbench module for static structure analysis and modal analysis. In the process of finite element simulation, the rotational constraints has been imposed on the top and bottom pivot according to the actual operation situation of the miter gate, and obtain the first several order frequencies and corresponding modal vibration mode of the miter gate, which can show the hydrodynamic vibration stress and strain distribution. According to the results of the finite element simulation analysis, the prototype vibration test of the miter gate has been done. The test results show that the vibration amplitude and the stress and strain distribution of each part of the miter gate are corresponding to the vibration test.
Application of DE Algorithm over Control of Grid-Connected PV Inverter
Authors: Zhao Guo , Huang Xue Liang
Published: August 2013

A novel method for optimum vector PWM (OVPWM) control of three-phase grid-connected photovoltaic inverter was described. The control vector and its corresponding action duration composed of the PWM sequences generated by optimum vector PWM strategy. A Differential Evolution (DE) algorithm was applied to determine the action duration of the output voltage vector based on conventional vector PWM (CVPWM). The Matlab-based model of three-phase grid-connected photovoltaic generation system was established. Comparative analysis proving superiority of the OVPWM technique over the CVPWM, and the results of the simulation confirmed the feasibility and advantage of proposed OVPWM strategy.
Parachute Swing Angle Measurement in Wind Tunnel Test Based on Stereo Vision System
Authors: Song Jin , Ma Jun , Jiang Min
Published: August 2013

Parachute system is a significant composing part of aircraft, and the swing angle is one of system security targets. To the complicated measurement problem of parachute angle in wind tunnel test, this paper describes a test method based on stereo vision system, the system is mainly composed of two CCD cameras, image acquisition card and computer. It can get 3D coordinates by stereo vision calibration and digital image processing technology, and calculate the parachute swing angle by geometry relationship. The result shows that the method succeeds, and gets the vertical and horizontal angles which are projected onto two orthogonal planes. The method has the advantage of simple system composing and good compatibility, displays much better application value.
Blind Detection with Deterministic Arrange and Scale to Underwater Acoustic Source
Authors: Zhao Wei , Hao Bao An
Published: August 2013

t is a valid anti-interference method that blindly separates the contaminated radiant acoustic source object from interferences, but the separated radiant acoustic source object with arrange and scale ambiguity makes the likelihood ratio detection impossible. This paper solves the ambiguity problems by utilizing the correlation and energy consistency of the same source in the same overlapped frame data; Known delay distance, data sum length and signal to noise ratio (SNR), the paper analyzes algorithms performance and draws the receiver operating characteristic (ROC) curve in different distance, which offers an accord to design detector parameters in different false alarm probability and detection probability.
Application of Capacitance Sensor for Displacement Measurement in High Temperature Environment
Authors: Zhang Yao , Liu Xiao Ya
Published: August 2013

based on the analysis of the production technology and present status of online glass coating production, a non-contact measurement capacitance sensor, which is adaptive to the high temperature condition and enjoys a novel structure, is proposed in the paper. The online measurement of molten tin surface position in the CVD coating production process under the condition of 700°C can be realized with the sensor. The reliability and feasibility of the dynamic measuring system have been proved by the experiment. The dynamic accuracy is better than 0.1mm within the effective range of 25mm.
Development of the Serial Communication for the Measurement System of Ships Keel-Line
Authors: Zhang Ming Hui , Zhang Yao Yu
Published: August 2013

Serial communication has been widely used in varies fields, and its application in the measuring system for the keel-line of ships is discussed in this paper. The main function of the measuring system is to fulfill the orientation introducing, thus to realize the unification of coordinates. Serial communication is applied in the measuring system to achieve real-time data communication between self-collimation theodolite, electronic gradienter, center computer and computer of measuring system. The component of a communication system, the function, the system protocol and the program design are introduced in this paper. It is proved that the communication system, which fulfills real-time as well as accurate and reliable data communication, has already been applied in measuring system of ships keel-line.
Study on Measurement System Analysis and its Application in the Data Analysis of LSS
Authors: Ye Wei Min , Liu Wo Ye , Chen Xiao , Han Fei , Zhu Jian Feng , Dai Ping
Published: August 2013

MSA takes a very important role in project application of Lean Six Sigma (LSS). In this paper, the concepts and content of MSA in LSS are introduced, and the R & R model of the MSA is discussed. The average and range analysis method and variance analysis method are elaborated, and a comparative analysis of the commonplace methods in MSA is addressed. Finally, an example is given to illustrate the application of MSA methods in data analysis of LSS improvement project. The results show the impact of different methods on the evaluation conclusions of MSA.
Structural Finite Element Analysis on Side Wall Pouring Formwork Trolley for Subway Station
Authors: Ma Yan Fang , He Zhen Tong , Zhao Qin
Published: August 2013

Structure finite element analysis software ANSYS is used to establish relatively complete finite element model for automatic side wall formwork trolley, analyze the stability of formwork trolley under light condition and work condition, and give a correct classification on working conditions of formwork trolley. Main factors influencing the stability of formwork trolley are found and improving measures are proposed to provide reference for optimal structure design and standardized design of formwork trolley.
Operating System for the Dynamic Belt Measurement
Authors: Wu Jun Hui , Zhou Quan , Si Hui Ping , Chen Jie , Lin Kai Yan , Zhang Chi Bin
Published: August 2013

Firstly, The core model, structure module, performance characteristics and JTAG debug interface of the microprocessor were described by this article. Then, the system power supply module, prior to the passage weighing signal and tachometer signal circuits were designed in this paper. Secondly, according to the operational needs of the belt scale system, the external memory circuit and the TFT-LCD touch screen circuit modules were studied. Finally, the high-speed circuit board PCB designed to solve EMC problems. And it described the data collection and weighing controller bus communication test situation and established the communications test platform of Profibus-DP, introduced the test experimental procedures, experiment shows the communication between master and slave test results are correct.The computing speed and accuracy, data processing compared with traditional electronic belt scale, information exchange, integration, reliability and stability will be greatly improved by the advanced embedded technology and so on.
Optimal Design of Lifting Mechanism for Standing Rehabilitation Bed Based on MATLAB
Authors: Wu Gui Min , Shi Xiang
Published: August 2013

The lifting mechanism is the key to the standing recovery bed, moreover, the coordinates of hinge joints of lifting mechanism is the difficulty in designing the mechanical structure of standing rehabilitation bed. In this paper, it mainly illustrates numerical analysis of hinge joints with using MATLAB to solve critical parameter values, besides, as for optimizing the design of mechanism, it is necessary to analyze the trajectory of the mechanism and kinematic parameters and to verify the rationality of the design.
The Fast Estimation of the Electromechanical Oscillation Frequency
Authors: Duan Zhi , Bao Hai , Wang Ling , Liu Gang , Han Xiao Ming
Published: August 2013

Analyzing stability of power system mainly relates to the model of machine, which can be simulated by two order and damping coefficient D (D represents mechanical damping and electrical damping), but there is no standard which can illustrate how much the damping coefficient D is. Usually power flow, excitation system, PSS and prime mover system affect the total damping largely, but have little impact on the electromechanical oscillation frequency. Firstly the paper theoretically proves the correctness of calculating electromechanical inherent frequency with system matrix. Secondly considering the damping ration characteristic of power system, the feasibility of estimating the electromechanical oscillation frequency with electromechanical inherent frequency is analyzed. With different models, the simulation results demonstrate that the electromechanical oscillation damping is affected very largely, but the frequency is affected little, which proves the effectiveness of the system matrix analysis method.
The Simulation Study on Transformer Oil-Paper Insulation Polarization Spectrum
Authors: Zhang Jun Qiang , Zhao Tao , Liu Yun Peng
Published: August 2013

Return voltage diagnostic method is an effective method of non-destructive diagnosis in transformer insulating state. The current study is that through experiments get polarization spectrum to analysis the transformer insulating state, but not yet carried out the influence of various factors to the experimental results. So, based on the Debye model and specific parameters comes from one equivalent model of the actual transformer, this paper using RVM methods to simulation analysis maximum return voltage and dominant time constant under different factors. Simulation results show that the diagnostic methods that combine maximum return voltage value with dominant time constant can preferably reflect the transformer insulation state.
A New Improvement of Radial Line Slot Antenna
Authors: Hu Jin Hang , Lin Jin Cai , Fu Wei Long
Published: August 2013

A radial line slot antenna (CP-RLSA) is a slotted waveguide planar array for DBS reception. A number of designs have been devised, but these designs have pros and cons. In order to suppress grating lobes and increase the gain, this article will introduce a new wave material =1.06, arrange the angle and modify configurations of the slot sets. The results of experiment illustrate the validity of the design and analysis.
Study of an ENG-Inspired Two-Sided UHF RFID Tag Antenna
Authors: Li Li , Wang Lin Chuan , Hu Xue Jiao , Yin Xiao Li
Published: August 2013

In this paper, a two-sided tag antenna’s equivalent circuit model and related formulas based on the complex impedance are derived to guide the design and adjustment of a tag antenna’s structure. An ENG-inspired NFRP element is introduced in the design of the tag antenna. A two-sided UHF RFID tag antenna, only 19.2×32×0.7mm3(0.059×0.098×0.002 λ03) in size, is proposed. Its central frequency is 915MHz which can be easily adjusted according to different requirements. The bandwidth of in S11 in -3dB is 10MHz.
A CMOS Bandgap References Voltage Circuit Using Current Conveyor for Power Management Applications
Authors: Lee Min Chin , Hu Chi Jing
Published: August 2013

This paper proposes a low power bandgap reference voltage circuit that provides an output reference voltage close to the bandgap voltage having a low output resistance and allows resistive loading. This proposed circuit is design and implemented using the TSMC 0.18μm 1P6M CMOS process. Simulation and measured results verify that the chip size is with power dissipation about 0.1mW, and the operation temperature range formwith temperature coefficient about . The chip supply voltage can from 1.3 to 1.8V with PSRR about 70 dB, and its output reference voltage can stable on .
Comparison of Optical and Concentration Feature Used for fNIRS-Based BCI System Using HMM
Authors: Xu Bao Lei , Fu Yun Fa , Shi Gang , Yin Xu Xian , Miao Lei , Wang Zhi Dong , Li Hong Yi
Published: August 2013

Brain-Computer Interface (BCI) is very useful for people who lose limb control such as amyotrophic lateral sclerosis (ALS) patients, stroke patients and patients with prosthetic limbs. Among all the brain signal acquisition devices, functional near-infrared spectroscopy (fNIRS) is an efficient approach to detect hemodynamic responses correlated with brain activities using optical method, and its spatial resolution is much higher than EEG. In this paper, we investigate the classification performance of both optical signal and hemodynic signal that both used in fNIRS-based BCI system using Hidden Markov Model (HMM). Our results show that hemodynamic signal has a much lower error rate than optical signal, especially the Oxy-hemoglobin (HbO) has the lowest error rate. This result is important for researchers who want to design an fNIRS-based BCI system and get better performance.
Measurement and Analysis of the Low-Voltage Power Line Narrowband Carrier Channel Attenuation
Authors: Sun Xiao Da , Zhao Yan Hong , Zhai Ming Yue , Xing Gui Lan , Li Dan
Published: August 2013

When the low-voltage power line is used as a communication line, the channel characteristics have an important impact on the communication quality. In this paper, power distribution networks are divided into three categories. The paper selects a typical power distribution area and uses a rigorous method to test channel attenuation characteristics of the narrowband (50 kHz~500 kHz) carrier. Base on the measurement data, carrier attenuation characteristics are summarized. The measuring method used in the paper and the conclusions of this paper would play a guiding role on the research of the power line carrier communication.
Improved RFID Anti-Collision Algorithm Based on Dynamic Framed Slotted ALOHA Algorithm
Authors: Yu Qing , Gu Ping , Wang Jin Lin
Published: August 2013

Aiming at the problem of tag conflict in the RFID system, an improved algorithm based on dynamic framed slotted ALOHA algorithm is proposed. In this algorithm , when the recognition of a frame length is still not finished, according to the existing conflict timeslot and free timeslot inside of frame, frame length can adjusted in advance, furthermore a new frames recognition process is began, which can improve the recognition efficiency of the existing algorithm, increase throughput. The performance simulation experiment shows that the improved algorithm has more advantage than dynamic slotted ALOHA algorithm.
Research on Customizable Modeling Workflow Engine in Information System
Authors: Yu Qing , Zhang Cui Ying
Published: August 2013

Taking the construction of information system as application background, a cutomizable modeling workflow system based on the theory of the Process Virtual Machine is put forward in this paper. The flow parsing model supports multiple business flow description language and the corresponding parsing mechanism. One kind of description language and the corresponding parsing mechanism are mainly elaborated. The information system which integrates this kind of workflow system is enhanced in its robustness and scalability characteristics.
The Analysis of Coke Pusher Ram's Vibratory Response with Different Coke Pushing Speed
Authors: Zhao Guo Qi , Zhang Jian , Zhang Yi Kan , Xu Liang
Published: August 2013

Coke pusher ram of coke pusher machine on 6 meters coke oven sometimes vibrates severely, even have strong resonance which can make the hole pusher machine vibrate. This vibration produce great harm on pusher ram and pusher machine and relevant equipment. This phenomenon is common, you can find it on many domestic pusher ram of pusher machine on coke oven. In order to improve the stability of pusher ram on the work, it is necessary to find some reasons which may lead to coke pusher ram’s vibratory.
Influential Factors on Microstructure of LaB6 Films
Authors: Xu Jing
Published: August 2013

LaB6 films are deposited by magnetron sputtering deposition. ZrO2 glass is used as substrate. Bias voltage and substrate temperature are adjusted. Morphology of films that deposited at different parameters is characterized by AFM. Results of AFM shows that grains diameter on surface of LaB6 films is nanoscale, and roughness of the surface is less than 20nm. LaB6 crystallites are seen to cover substrate surface entirely. Structure of films is smooth and compactness, and there is no obviously default is found. Bias-voltage influences morphologies of films more obviously than substrate. The best bias voltage is-100V. Structure of film that deposited at 450°C is more compactness than others, and roughness of the film is least.
Modal Analysis and Structure Optimization of a Printed Circuit Board NC Drilling Machine
Authors: Zhu Jia Wei , Xiao Shi De , Feng Jian , Meng Xiang Yin , Jiang Ming Ming
Published: August 2013

The solid modeling of one type of printed circuit board NC drilling machine is built by Pro/Engineer, and ANSYS is applied for modal analysis. In this paper, the key influential factors of the structure of the drilling machine are found out, the structure is improved and two prioritization schemes are proposed. After analyzing the primary structure and the two optimized structures of the machine tool bed and then comparing the analysis results, the optimal scheme is proposed. The results show that the optimization improves the dynamic property and the machining precision of the drilling machine.
Differential Thread Principle’s Application in Manual Drawing Device
Authors: Liu Wei , Shen Ying , Lu Cheng
Published: August 2013

The differential thread is composed of two threads, which generally both rotate in clockwise direction, but their screw pairs have distinct thread pitches. When they rotate a period, the movement distance is the screw distance of the screw pairs. Through the application of differential thread, the transmission, which includes distance and force transmission, can be increased or decreased [1]. Based on this principle, when it is applied to the manual drawing device, better effects can be received. So, the multifunction manual drawing device is designed by using the principle of differential thread and it can be strengthened effectively, over 75% stronger than ordinary drawing force. The new design acquires much stronger drawing force.
Research on Repairing Deformation Rapidly for Steel Strip
Authors: Chen Hui Wei , Zheng Yi
Published: August 2013

This article studied about bending machine, adopted converse thinking for designing, transformed the bending machine then designed steel strip straightening machine, using this machine to make the deformed steel strip straighten. We used the 3 d modeling software SolidWorks to make a 3d model for the machine, then used the add-in cosmosworks of SolidWorks to make a simulation for main part, got the curve of stress, strain, and displacement of the part and provided a reference for the transformation of steel strip straightening machine.
Study on the Structure of the Flexspline of Harmonic Reducer
Authors: Wang Xin , Zhou Xuan , Li Cheng Qun
Published: August 2013

According to the flexible gears damage problem during the work process of the harmonic reducer, a FEM model of the flexible and wave generator was established. On the basis of the mechanics of materials and the finite element theory, a large number of numerical simulations by the use of the finite element software were made. The analysis shows that: the dangerous area is between the flexspline tooth rim and cylinder part. On this basis, the equivalent strain and equivalent stress at different transition fillet were discussed by the use of numerical simulation. The results show that: the equivalent strain and equivalent stress are decrease with the increase of the transition fillet. It provides a basis theory of the optimization design of the flexspline.
Integration of Tree Models into a Real-Time Pollution Dispersion Simulation
Authors: Chen Shi Hong , Dayan Shang Guan
Published: August 2013

For exploring the effect of particle dispersion and wind simulation in an urban surrounding. The tree was constructed with smaller numbers of polygons for saving the rendering time in real-time virtual environment simulation system. It was integrated into a real time pollution dispersion simulation system. Also a way was used for simulating the wind tree. The results show that this method is proper and efficient for simulating tree animation in real-time virtual environment simulation system.
Development of Detecting System of Fighter Electrical Boxes
Authors: Zhang Zhi Xian , Mi Hai Zhen , Liu Zhi Hong , Sun De Gang
Published: August 2013

Traditional fighter electrical boxes detection system can not be efficient and accurate implementation in detecting electrical boxes, in order to achieve accurate detection of the electrical box, this paper had designed a detection device consists of upper machine and lower machine system. The system is based on the C8051F120 single chip microcomputer as the core. It is controlled by a machine on and off of the FPGA to drive the relay array to detect the safety status of electric box, through the communication between upper machine and lower machine to display the measurement results. The integrated test system can detect various fighter electrical control boxes, which overcomes the shortcoming of a test equipment in the past can only test a class of products, improves test accuracy and efficiency.
A New Type Power Train System of Electric Hybrid Vehicle
Authors: Zhang Yu Bing , Wan Ren Jun , Chen Hong Tao , Wang Ren Guang
Published: August 2013

A new type of electric power train system was designed for fully hybrid electric city bus, which is mainly composed of engine, power coupling mechanism, first motor, second motor, motor controller, power train controller, power battery, and Drive axle. Its main characteristics of power coupling mechanism is adoption of one planetary gear set to realize the function that can be provided by two planetary gear sets. The new power train can be manufactured with lower cost because of its simple structure with higher transmission efficiency and less faults such as oil leakage. The new system can provide five operation modes for city bus, which are hybrid driving, pure electric driving, regenerative braking, grid charging, and stop charging.
Loading Behavior Investigation of Composite Single Lap Adhesive Joints
Authors: Hu Hai Xiao , Ji Yun Dong , Ni Ai Qing , Wang Ji Hui
Published: August 2013

Adhesive bonding as a promising join technique for composites is not widely used for the absence of absolutely understanding of loading behavior. In this paper both electric-strain gages and FBG sensors were employed to get the internal and surface strain of adhesive joint. In the experiment, nonlinear behavior is observed. Then the test data were compared with FEM results. It is showed that they meet each other well, FEM could get the stress distribution in adhesive bond composite joint, and both biggest peel stress and shear stress are appear at the end of adhesive.
Study on Mechanical Automation with Airborne Guiding Ammunition Automatic Testing Equipment Development
Authors: Zhang Ning , Chen Li , Li Tao
Published: August 2013

This paper introduces foreign airborne guiding ammunition automatic testing equipment development history and current situation, analyzed our Army airborne guiding ammunition automatic testing equipment development and existing problems, putting forward my Army Airborne guiding ammunition testing equipment development proposal.
The Fuzzy Decoupling Control of the Electric Vehicle Steering and Speed Systems
Authors: Li Guo , Sun Yan
Published: August 2013

Based on the electric vehicle steering and speed models, this paper discussed the control problems of the electric vehicle steering and speed systems. Firstly, the electric vehicle speed control system is designed using the fuzzy PID controller. Then the electric vehicle steering controller is a fuzzy controller. Due to the coupled effect of speed in the steering control system, designing a fuzzy decoupling controller, reducing the coupled effect of speed, in order to control the system of steering model and speed model independently, and to achieve the purpose of decoupling. Finally, the result of simulation proves that no matter how speed changes, steering control system still has good tracking performance with decoupling controller. The systemic robustness is much stronger and it also enhances the utility of the control system.
Simulation Research on Asynchronous Motor Vector Control System
Authors: Han Chun Juan , Rui Fa Cheng
Published: August 2013

Abstract: the vector control of asynchronous motor variable frequency speed regulating system is a high performance control system, has been used in many high precision, high performance applications applications. In vector transform based many control methods, such as the speed sensorless control and adaptive control, is the development of. In the MATLAB environment, the control of slip frequency vector control system simulation, the simulation experiment shows the fuzzy control simulation results superior to the traditional PI control.
Effect Factors of Flow Regenerated Noise from Muffler Unit with Simple Expansion
Authors: Zhao Hai Jun , Zhao Xing Guo , Wang Guo Hua
Published: August 2013

Structure parameters of work piece on muffler unit with simple expansion are determined using orthogonal experiment design method, and relationship model of total sound power of flow regenerated noise and flow velocity structure parameters is built, and the model parameters are solved, and quantity study of effect factors for the noise is performed. Results show that inlet diameter and expansion cavity length have high effect on flow regeneration noise, the reducing of the inlet diameter and improving expansion cavity length is in favor of the reduction of flow regeneration noise from muffler unit with simple expansion, and expansion ratio has less influence on the noise, the reducing of the expansion ratio makes the regenerated noise become less down.
Experimental Study on the Replacement of HFC-R134a by Hydrocarbons in Automotive Air Conditioning System
Authors: Perang Mohd Rozi Mohd , Nasution Henry , Zulkarnain Abdul Latiff , Aziz Azhar Abdul , Dahlan Afiq Aiman
Published: August 2013

The HFC-R134a and hydrocarbon refrigerant (HCR) will be evaluated on the automotive air conditioning (AAC) experimental test rig which completed with the AAC system including the blower, evaporator, condenser, radiator, electric motor, compressor, alternator and equipped with the simulation room acting (equipped with internal heat load) as the passenger compartment. The electric motor operated as a car’s engine and will drive the compressor simultaneously to the alternator to recharge the battery. The tests have been performed by varying the motor speed; 1000, 2000 and 3000 rpm, temperature set-point; 21 and 230C, and internal heat loads; 0, 500, 700 and 1000 W. The results of the performance characteristics of the HCR indicate the encouraging enhancement of the AAC system compared to Hydrofluorocarbon refrigerant (HFC-R134a).
Solar Air-Conditioning System Using Single-Double Effect Combined Absorption Chiller
Authors: Yabase Hajime , Hirai Akira
Published: August 2013

We developed a single-double effect combined absorption chiller for "Solar air-conditioning system" . This chiller is composed of a highly-efficient gas absorption chiller as a main machine which are equipped with a solar heat recovery unit comprising a heat recovery heat exchanger and special condenser. It enables low temp. solar hot water at 75°C under operation at the cooling rating of load factor: 100%. And we constructed the demonstration plant in Japan. We confirmed that the solar heat priority usage function and gas-based backup function operate properly and overall system functions normally. In summer, fuel gas reduction by 10% could be achieved and the results as estimated were obtained.
Effect of Vertical Baffle Installation on Forced Convective Heat Transfer in Channel Having a Backward Facing Step
Authors: Heshmati Amirhossein , Mohammed Hussein A. , Parsazadeh Mohammad , Fathinia Farshid , Wahid Mazlan  A. , Sies Mohsin M. , Saat Aminuddin
Published: August 2013

In this study, forced convective heat transfer is considered in channel over a backward facing step having a baffle on the top wall. Four different geometries with different expansion ratios and different type of baffles are numerically investigated. The study clearly shows that the geometry with expansion ratio 2 and solid baffle has the highest Nusselt number compared to other geometries. Considering both Nusselt number and skin friction coefficient for all four geometries clearly illustrated an increase in average Nusselt number by increasing the expansion ratio. This study clearly shows that mounting a slotted baffle at the top wall instead of a solid baffle caused a decline in average Nusselt number. It is also found that for geometry with expansion ratio of 3 and a slotted baffle on the top of the channel, skin friction coefficient in both bottom wall and step wall has its minimal compared to other geometries.
Effect of Inclination Angle on Three-Dimensional Combined Convective Heat Transfer of Nanofluids in Rectangular Channels
Authors: Mohammed Hussein A. , Om Nur Irmawati , Wahid Mazlan  A.
Published: August 2013

Combined convective nanofluids flow and heat transfer in an inclined rectangular duct is numerically investigated. Three dimensional, laminar Navier-Stokes and energy equations were solved using the finite volume method. Pure water and four types of nanofluids such as Au, CuO, SiO2 and TiO2with volume fractions range of 2% φ 7% are used. This investigation covers the following ranges: 2 × 106 Ra 2 × 107, 100 Re 1000 and 30° Θ 60°. The results revealed that the Nusselt number increased as Rayleigh number increased.SiO2nanofluid has the highest Nusselt number while Au nanofluid has the lowest Nusselt number. An increasing of the duct inclination angle decreases the heat transfer.
The Achievement of Web Server in the Development of ARM Embedded System
Authors: Zhang Yan Jie , Wang Xue Yong , Zhou Hong Suo
Published: August 2013

Based on open source embedded operating system uClinux, embedded applications system taking ARM microprocessor as the core was connected with Internet. Through embedding Web server to the ARM embedded system functions and adding embedded Gateway Interface CGI program, the interactive delivery with the long-distance customers Web browser order and response information come true.
Multiple Factors Path-STIRPAT Analysis Model of Beijing CO2 Emission
Authors: Sun Lei , Deng Ya , Xin He , Xing Tong , Tan Zhong Fu
Published: August 2013

As the political, economic and cultural center of China, Beijing is facing worse CO2 emission influences than other cities. Therefore, digging out the influence factors of CO2 emission is valuable for maintaining Beijings sustainable development. This paper discusses the driving forces influencing Beijings CO2 emissions based on Path-STIRPAT model-a method combining Path analysis and STIRPAT (stochastic impacts by regression on population, affluence and technology) model. The analysis shows that GDP per capita (A), industrial structures (IS), population (P), urbanization level (R) and technology level (T) are the main factors influencing Beijings CO2 emissions. The sequence of the size of factors direct influence on Beijings CO2 emissions isA>IS>R>T>P, while that of factors total influence isA>R>P>IS>T.
Multi-Stage Deep Drawing Process of Thin Sheets for the Sleeve Housing Component of a Spindle Motor in HDD
Authors: Yeon S.M. , Choi S. , Lee G.A. , Park S.J. , Kim J.H. , Song J.H.
Published: August 2013

High-precision micro-fluid dynamic bearing is the key part in a hard disk drive, as it offers low noise levels, high speeds and high rates of accuracy with low amount of vibration. To enhance the performance, a thin sheet component called sleeve housing are newly adopted in FDB. In this paper, multi-stage sheet metal forming process is utilized to fabricate the sleeve housing component. Multi-stage drawing simulations are conducted to investigate the adequate process parameters preventing wrinkling and tearing. From the simulation result, multi-stage drawing processes are conducted with progressive die sets in order to evaluate the forming accuracy. The results reveal that it is successful to fabricate the sleeve housing component with multi-stage drawing process.
A Potential Precipitating Apparatus and its Performance Measuring
Authors: Shi Ling , Yang Cheng Wu , Yu Xin Ming , Luo Xian Wei , Chen Hong Mei
Published: August 2013

A new apparatus which is the disc with the radiant fine stainless-steel filament is potential removal of dust apparatus by the analysis of dust removal. To evaluate its performance of dust removal, the experimental installation is built, the dust collection efficiency under dry and wet condition, the pressure drop, is measured in the experimental platform. It is also designed the wet dust precipitator and applied to the control of dust in mine tunnel. Results show that the disc is better dust collection efficiency under wet condition than under dry condition, the respirable dust collection efficiency is more than 80 percent averagely, and its pressure drop is also lower. Though these measures are initial, it is convincing that the disc can served as a part of precipitator by optimum design.
A New Monitoring System Based on Microcontroller
Authors: Wang Shu Shi , Zhu Yu Chuan
Published: August 2013

This paper introduces the design of a warehouse temperature and humidity monitoring system based on a STC89C51 microcontroller. Compared with the traditional method, this system has the advantages of accuracy, sensitivity, short time and intuitiveness, and reduces the workload of the technicians and the cost of warehouse supervision. The greenhouse control system based on a microcontroller and digital temperature and humidity sensors can realize the automatic measurement and adjustment of temperature and humidity inside the greenhouse, which greatly reduces the labor intensity of operators, makes the greenhouse reach a more advanced management level, and is a low-cost, easy-to-use and accurate temperature and humidity measuring instrument, therefore it has a broad application prospect.
Finite Element Analysis of the Whole Machine on the Domestic Large Gantry Machine Tool
Authors: He Xin Yuan , Tian Ye , Zhao Hong Wei , Tong Da , Liu Chuang , Cui Tao
Published: August 2013

The objective of this work is to define assembly body of processing center by using the contact and node coupling combined method. The information of node displacement, stress and strain can be got by static analysis. Besides, we can check the strength of key parts through the strength theory. Modal analysis results indicate that resonance would be caused in machine tools when external drive frequency is 36.477 Hz, 41.436 Hz and the 44.796 Hz, which are serious accidents. Harmonic response analysis indicates that the certain frequency of 41Hz should be avoided in practice.
The Controller for Uncertain Nonlinear Neutral Systems with Time-Delays Based on State Observer
Authors: Yang Zhan Min , Zhen Jiu Jun , Zhang Qing Hai
Published: August 2013

In this paper, the state observer design is considered for a class of nonlinear neutral delay system with nonlinear uncertainty based on Lyapunov stability theory. On condition that the nonlinear uncertain functions are gain bounded, a sufficient condition is presented for the existence of a linear feedback from interference input to control output. The less delay-dependent sufficient stability conditions for these systems in terms of linear matrix inequalities (LMI) are derived. By solving a linear matrix inequation, we can obtain the controller and observer of this system.
Stability Analysis and Design of a Mono-Pulse Photoelectric Detecting System
Authors: Zheng Ai Lian , Zhang Jie , Huang Bo Zhi
Published: August 2013

This paper presents the stability analysis and design of a mono-pulse photoelectric detecting system, which consists of a laser diode and a photoelectric detector array. The laser source is a laser bean and the response of the detector is a mono-pulse small signal. The pulses type height is 100mV and type width is 1mS. System can detect the laser beans position on the detector target thought mono-pulse detecting. After signal analysis and signal processing, the Interference is reduced, the multi-response is resolved and the mono-pulse is detected well.
Optimization of Limited Irrigation Schedules for Spring Maize (Zea mays) in a Desert Oasis Region
Authors: Zhang Heng Jia , Li Jun Hui
Published: August 2013

An experiment was carried out to optimize limited irrigation (LI) schedules for spring maize in a desert oasis region. The grain yield, water use efficiency (WUE), irrigation water use efficiency (IWUE), and integrated evaluation index for soil nutrients (IEISN) in 0~40 cm soil depth of maize field subject to LI were selected as the synthetical factors in evaluating and optimizing the LI schedules. The unifactor matrix and weighing coefficient matrixes of evaluating factors were formed for fuzzy judgement and the synthetical evaluation index (SEI) determination. Compared to the minimum in MI4, the SEI for spring maize was respectively improved by 46.5%, 20.9%, 38.9%, 27.8%, and 23.8% in MI1, MI2, MI3, MI5, and CK. Therefore, the MI1 irrigation regime was recommended as the optimized LI schedule for spring maize in the desert oasis region due to its maximum SEI caused by the least water application, maximum grain yield, WUE, and IWUE, and 95.2% of the maximum IEISN.
Web Based Learning System Modeling Research
Authors: Yang Hui , Liu Jia Jun , Zhang Xiao Bao
Published: August 2013

Based on being a modeling process of the network learning system essentially, it has three elements of learning environment, learning, learning activities, and three dimensions of conceptual model, physical model and logical model. From the method aspect, it has analytical method, theoretical basis, model design; from logical view, it has branch learning resource, learning control management and students' interaction layer. Focus on the analysis of the learning system model of learning resources and learning system modeling.
Couette - Poiseuille Two-Layer Flow of a Third Grade Fluid
Authors: Ansari Ali R. , Mitkova Maya K. , Siddiqui Abdul M.
Published: August 2013

The two-layer Couette-Poiseuille flow of a third grade fluid is examined. The problem is reduced to solving nonlinear differential equations governing the motion of the two immiscible fluids in case of different thickness of layers. The solutions are used to study the effect of the third grade material parameter on the velocity profiles. The investigation focuses especially on the location of the velocity maximum as function of the viscosity and third grade material constant.
Free Convection Flow of a Nanofluid Past an Isothermal Inclined Plate
Authors: Narahari Marneni , Akilu S. , Jaafar A.
Published: August 2013

In this paper, the natural convective boundary-layer flow of a nanofluid over an isothermal inclined plate is investigated numerically with the effects of Brownian motion and thermophoresis in the nanofluid model. The equations governing the flow are expressed in the form of coupled non-linear ordinary differential equations using the similarity analysis. These equations are then solved numerically by an implicit finite-difference method known as the Keller-box method. The effect of inclination angle on the dimensionless velocity, temperature, nanofluid volume fraction and Nusselt number has been analyzed through graphs. Brownian motion and thermophoresis effects on the Nusselt number at an inclined plate are also discussed.