bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Properties of a Novel Cationic Polymer PTMAEPAC
Authors: Niu Rui Xia , Li Bo Lin , Long Biao
Published: December 2012

Poly(bis(2-(trimethylamino)ethyl) 2-hydroxyl propylidene ammonium) chloride (PTMAEPAC) is one kind of oligomeric cationic polymer with a quarter nitrogen atom on its main and side chain. It was synthesized from Bis(2-trimethyl ammonium)ethyl ammonium chloride (TMAEAC) and epichlorohydrin (ECH) by copolymerization reaction, effects of reaction temperature, mole ratio of raw materials, reaction time, amount of solvent on the cationicity of product were studied. The structure of PTMAEPAC was confirmed by IR and 1H-NMR, and its anti-clay-expanding ability was studied. The results show that the cationicity of PTMAEPAC can reach 83.9% with the reaction time of 6h at 65°C when TMAEAC-to-ECH mole ratio is 1.2:1 and the amount of solvent is 30% in total. According to the IR and NMR analysis the product has the same structure with the aim compound. When the content of the product is 3 wt% it has a good anti-clay-expanding ratio of 96.1%.
Parameter Optimization for Vibration Flow Field of Polystyrene Melts via RBF Neural Networks Combined with SALS
Authors: Xian Guang Ming , Qu Jing Ping , Zeng Bi Qing
Published: December 2012

This work aims at developing an accurate measurement of characterization flow field of polymer melts by small-angle light scattering (SALS). In this article we propose a new method, based on radial basis function neural network (RBFNN) for predicting the optimum vibration field parameters. A laser light passes through polymer melts in the visual slit die. The results reported in this study were obtained with polystyrene (PS) with rotation speed at 20 rpm. In order to capture the scattered light, a polarizer and an analyzer are placed before and after the polymer melts. RBFNN inputs consist of frequency and amplitude, which are used as input parameters to predict the maximum light intensity projection area. RBFNN predicts that the optimum value of frequency, amplitude are 15.86 Hz and 0.20mm, respectively. And the maximum light intensity projection area is predicted to be 9260 pixels.
Terahertz Characteristics of Two Dimensional Photonic Crystal Cavity Based on 3D Finite-Difference Time-Domain Method
Authors: Li Wen Chao , Tao Tao , Sun Yu Chao
Published: December 2012

We proposed a photonic crystal(PC) cavity of hexagonal lattice with six air holes of which the radius are different from other cylinders. In the center of this structure, the cavity can be obtained and light confinement is achieved. The Figure of E vs time apparently demonstrates that the light confinement can be observed in ultrafast time. All the Figures in this paper, calculated by 3D finite-difference time-domain method, illuminate that the structure proposed is significant in the field of PC.
Adsorption of Methane on Pristine and Al-Doped Graphene: A Comparative Study via First-Principles Calculation
Authors: Zhao Wei , Meng Qing Yuan
Published: December 2012

The adsorption of methane (CH4) molecule on the pristine and Al-doped (4, 8) graphene was investigated via the first-principles calculations. The results demonstrated that, in comparison to the adsorption of a CH4molecule on the pristine graphene sheet, a relatively stronger adsorption was observed between the CH4molecule and Al-doped graphene with a shorter adsorption distance, larger binding energy and more charge-transfer from the graphene surface to the CH4molecule. Therefore, the Al-doped graphene can be expected to be a novel sensor for the detection of CH4molecules in future applications.
A New Methodology to Predict Energy Bandgaps in GaxIn1-xAsyP1-y Compounds by ANFIS Theories
Authors: Chen Shen Li , Fann Der Ann
Published: December 2012

In this paper, a novel, fast, and accurate method to predict the energy bandgap Eg in GaxIn1-xAsyP1-y quaternary compounds by using fuzzy theory and neural network is proposed. It has been developed to analyze the energy bandgap due to the adjustable ratios x and y of quaternary compounds. The prediction results are compared with experimental data obtained from actual devices. A good agreement (error xIn1-xAsyP1-y quaternary compounds.
Fresh Properties of Self-Compacting Concrete with Coarse Recycled Aggregate
Authors: Tang Wai Ching
Published: December 2012

In this paper, the fresh properties of self-compacting concrete (SCC) using recycled coarse aggregate (RCA) were evaluated. Five types of SCC mixtures were made, where the percentage of substitution of natural coarse aggregate by RCA was 0, 25, 50, 75 and 100%. The cement content, water to binder (W/B) ratio and Superplasticizer dosage were kept the same for all mixes. The effects of RCA on the key fresh properties such as filling ability, passing ability, and segregation resistance of SCC were investigated by conducting several fresh concrete tests included slump-flow, L-box, and sieve stability tests. The overall test results suggest that RCA can be used to produce SCC substituting up to 100% natural coarse aggregates without affecting the key fresh properties of concrete.
Damage Pattern Recognition of Refractory Materials Based on k-Means Clustering Analysis
Authors: Li Xi , Wang Zhi Gang , Liu Chang Ming , Han Bing Qiang
Published: December 2012

The k-means algorithm was used to divide the acoustic emission signals collected during the three-point bending test into two types. Combining with the analysis of AE parameters can we distinguish the micro-damage pattern recognition of the refractory materials. The bending test equipment is HMOR/STRAIN, and the AE acquisition device is DISP from PAC. Amplitude, counts, risetime, duration and centroid frequency were selected as the AE parameters .The microscopic damage modes of the refractory materials were recognized.
Evaluation of Burning Performance of the Traditional Organic Insulation Materials for External Wall of Buildings
Authors: Zhang Xiang , Zhang Fan , Yin Chao Lu , Luo Yun Song , Lin Shi Ying , Zhang Shao Juan
Published: December 2012

This paper focused on the evaluation of burning performance of the traditional organic insulation materials, such as XPS, PU and phenolic foam. Cone calorimeter test indicated that PU showed a well flammability. After the combustion process, most of the XPS was melted, and most of the phenolic foam was burned. SBI test showed that the burning grade of XPS, PU and phenolic foam insulation board are in the region of grade B to Grade D, can not achieve grade A. All XPS samples can reach to level ZA3, however, some PU and phenolic foam samples can not reach to level ZA3.
Application Research on Aqua-Sim for Underwater Acoustic Sensor Networks
Authors: Liu Tong Qing , Han Guang Jie , Zhu Chuan , Zhang Chen Yu
Published: December 2012

In this paper, we present a simulator based on NS2 for Underwater Acoustic Sensor Networks (UASNs), named Aqua-Sim, which simulates the attenuation of underwater acoustic channels and the collision behaviors effectively. In addition, Aqua-Sim supports 3D network deployment and provides some MAC and routing protocols. Through communication between two nodes and localization of unknown nodes, the application examples of Aqua-Sim are shown. We also present the graphical user interface of Aqua-3D using an example application.
Determination of Residual Organic Solvents in Antitumor di-phenyl-di-(2,4-dichlorobenzohydroxamato)tin by Capillary Gas Chromatography
Authors: Miao Lan Lan , Li Yun E , Li Yun Lan , Li Qing Shan
Published: December 2012

Abstract. To determine the residual organic solvents(methanol, dichloromethane, normal hexane ) in antitumor crude drug di-phenyl-di-(2,4-dichlorobenzohydroxamato)tin(DPDCT), capillary gas chromatography (GC) method was established. The HP-5 (30m×320μm×0.25μm) capillary column and flame ionization detector (FID) detector were adopted. The carrier gas was nitrogen with flow rate 5.08 ml·min-1. The column temperature was 50.0°C and column pressure was 20.00psi. The distributary ratio was 20:1. 1, 2-dichloroethane was used as the internal standard substance while toluene as the solvent to determine the residual organic solvents. The calibration curves for methanol, dichloromethane and normal hexane are linear in the rang of 180.6～481.5μg·ml-1(r2 = 0.9974), 35.78～95.40μg·ml-1(r2 = 0.9950), 17.82～47.52μg·ml-1(r2 = 0.9995), respectively. The average recoveries of methanol, dichloromethane and normal hexane are 100.4 %( RSD=1.8%), 100.3 %( RSD=1.7%), 99.6 %( RSD=1.5%), respectively. The method is a simple and accurate method with high sensitivity and repeatability. It is suitable for the residual solvent determination of antitumor DPDCT.
The Design of Real-Time Power Detection System in Communication Equipment
Authors: Yi Xian Jun , Jiang Jun Xia , Guo De Wen , Zhang Di Feng
Published: December 2012

Communications equipments' voltage, current fluctuations and power changes will bring uncertain hazards in communication systems, monitoring each functional unit's power is necessary. However, communication equipment's power supply has characteristics such as high transient and wide-scale fluctuations, which increases the difficulty of monitoring the power output. This paper introduces a design of an accurate real-time detection of each functional unit's power in communications equipment. The design uses dedicated power detection chip LTC4151 as the core components of the power collection, the LTC4151 which has wide range and high DC voltage input can measure output power, determine and make alarm processing under the management of the micro-controller. The hardware and software design of system are described in detail. The design has high reliability which solved the problem of monitoring communication equipment's power under the complex environment with simple circuit.
Study on the Online Dynamic Weighing System of Heavy Duty Apron Feeder Based on Labview
Authors: Deng Qiang Guo , He Hui , Hu Bin
Published: December 2012

The heavy duty apron feeder is a mechanism for material transportation. According to the differences on test requirements and effects, the traditional sensor development test weighing system presently is adopted widely. In the design, resistance strain gauge is installed on the feeder chain plate; and the whole-armed bridge compensates temperature to test the voltage value outputted by bridge resistance gauge; based on labview software, the virtual online dynamic weighing system is developed, realizing online monitoring at full time, warning, alarming and shutdown protective operation.
A Least Square Solution for Energy-Based Source Localization in Sensor Networks
Authors: Jiang Na , Ai Wen Bao
Published: December 2012

In this paper, we consider the energy-based source localization in sensor networks. A least square solution to the maximum likelihood (ML) formulation of energy-based source localization is proposed. Since the ML-formulation is nonlinear and non-convex, we approximate it to a convex least square problem which can be solved directly. Simulation results show that with a rough initial estimate range of the acoustic source’s location, the proposed method can achieve a high degree of accuracy. Moreover, with thousands of times lower computational complexity than the semi-definite relaxation method, the proposed method can be effectively used in real time location systems (RTLS).
Design of the Time Interval Generator Automatic Verification and Management System
Authors: Fu Yong Jie , Hou Xing Bo
Published: December 2012

This paper is aimed at the matter that verification method of time interval generator is still manual test, low efficiency, heavy workload, and for mechanical stopwatch calibrator can not be test because of lack of a machine / electrical converter. The author developed a machine/electrical switch, and programmed the automatic verification and management software using VB language, which realized the automatic verification and information management for various types of time interval generator. The machine/electrical switch is tested by NIM, the result show that the main indexes meet the design requirements. By practical application, the system has been working condition, which can be used as standard equipment of time and frequency parameter.
A Height Estimation Method Based on Joint Time Delay and Phase Estimation for Wideband InSAR or InSAS
Authors: Zhang Sen , Tang Jin Song , Zhong He Ping
Published: December 2012

In this paper, a new height estimation method based on joint time delay and phase estimation is proposed, which can solve the contradiction between the dimensions of the observing space and the hypothesis of spatial stationarity. It can improve the performance and robustness of time delay estimation by utilizing the neighboring pixels’ common information though spatial processing. The simulated data varifies the perfermance of the proposed method. The result is that its performance is better than the cross correlation estimation method.
The Abnormal Vibration Source Analysis of Automobile Drive Axle
Authors: Yang Chang Hai , Guo Nian Cheng , Song Hai Sheng , Shi Wen Ku
Published: December 2012

Through a Transmission bench test of a certain automobile Drive axle Assembly ,the abnormal vibration in Rear axle can be found. This paper establishes three demensions modle and Finite element model of the Rear Drive axle Assembly and calculates the modal of the Assembly and Axle housing respectively. It can be found that the frequency of the abnormal vibration in the Rear axle Bench test Coincides with the frequence of the Assembly First-order bending.It presents that it is the Assembly Resonance that leads to the abnormal vibration of Rear axle,not just Axle housing Resonance
Study on the Non-Linear Dynamic Stability of a Cracked Rotor System
Authors: Lv Shu Qing , Tian Lin , Zhao Guang Wei
Published: December 2012

The non-linear dynamic responses with one degree are studied and solved by the multiple-scale method and Newton-Raphson method.The prime resonance vibrations are discussed.It is analyzed that the values of external excitation,the internal damping of the shaft and the depth of the crack have effect on the amplitude frequency response curves.
Enclosure Active Structure Acoustic Control Based on Multi-Agent System
Authors: Li Zhi Chen , Gu Lin Ning , Chen Nan
Published: December 2012

For enclosure noise reduction, limited discrete distributed control is an ideal choice when it is difficult to understand sound-structure coupling characteristics accurately. An enclosure medel of two flexible plates is established in this paper. Two secondary control channels are constructed by applying distributed force on flexible plate. In the basis of control problem decomposition a multi-agent system (MAS) structure is established and the coordination relationship between agents is regulated. The simulaition resultes show the Active Structure Acoustic Control based on MAS is effective. The MAS control method improves the extension of noise control system and can be used in “plug-and–play” control field to realize noise reduction. MAS is a better effective tool to realize the divide-and-conquer approach in enclosure noise control field.
Dynamical Analysis for Mechanical Arm of the Coal Sampling Machine Based on Rigid-Flexible Coupling Model
Authors: He Li Le , Li Rong Li
Published: December 2012

Based on multi-body dynamics theory and the Lagrange equation， the rigid-flexible coupling dynamical equations of the Coal sampling arm was deduced.The rigid-flexible coupling mode is established by combining with Pro/E, ANSYS and ADAMS, and the model curve is gotten by simulation. The simulation results indicate that rigid-flexible coupling modeling is more actual and it is necessary to consider the flexible deformation of all arms when the sampling arm system is researched. The results in this paper presents the theoretical foundation for the sampling arm dynamical analysis and structure optimization.
The Development of Structure Random Vibration Parameter Analysis Tool Software under Hot Environment Condition
Authors: Wu Guo Qiang , Han Xiu Li , Du Jian Ming , Li Liang , Hu Cun Ming
Published: December 2012

In order to study the structure random vibration analysis technology that material properties and temperature should be considered. We have developed a set of structure random vibration parameter engineering analysis tools that under thermal environment conditions. This paper, mainly introduces this software’s architecture, development process and function characteristics. This software is developed based on NASTRAN. User not only can establish a ball cone column finite element model according to actual demand but also can select model’s material properties. At last, we have an example dealt with this software. The analysis results of temperature field, stress modal and random vibration are in good effect. And reached the anticipate design goals of this software
Research of Dynamic Performance of Reciprocating Compressor Valve
Authors: Jin Jia Qi , Sui Guo Liang , Shen De Ying
Published: December 2012

The main duty of this paper is dynamic performance research of reciprocating compressor value. By theoretical analysis, obtaining the movement rules curves of value plate and analyzing selection principle of value characteristics parameters; By mathematical simulation, expounding initial conditions and boundary conditions.
The Performance Study of Three-Ring Gear Reducer
Authors: Liu Yan Kui , Wei Yun Ling
Published: December 2012

According to relevant dynamics theory, finite element model of a three-ring gear reducer was established considering the deformation of gear’s teeth. The finite element model was analyzed under different phase angle, the real contact teeth and the stress in contact teeth was got from the analysis, which could steering the design of the three-ring gear reducer.
The Application of Gray Clustering and Information Axiom Integrated in the Scheme Evaluation of Mechanical Products
Authors: Qiu Ji Wei , Zhang Rui Jun , Si Xin Xin
Published: December 2012

To construct the rational and scientific design scheme evaluation method for a target, on the basis of researching on the complement of the gray clustering theory and information axiom, applying the combination in the design scheme evaluation, a scheme evaluation method based on the grey clustering and information axiom integrated is put forward. Aiming at the defect of obtaining difficulty for evaluation indexes, the evaluation index system is constructed by using the analytical hierarchy process. Aiming at the shortcoming that qualitative indexes are not be evaluated by information axiom, the qualitative index is whitened by using the triangle whiten weight function. At the same time, the computational formula of the information amount is improved, and the design scope and system scope of design scheme are extended to make the calculation results more actual. The weight of each index in the evaluation process isn’t needed to provide, and the subjective judgment is avoided on the influence of the evaluation results. Taking the process of obtaining the optimal scheme for the mechanical parking equipment as an example, the proposed method is analysis verified. The application examples show that the optimal scheme satisfying user needs is got in a relatively short time by using this evaluation method and a theoretical basis is provided for the establishment of a scientific and rational evaluation method.
Distribution on Transmission Ratio of Cylindrical Gear Reducer
Authors: Zhu Li Li , Wang Guang Xin
Published: December 2012

The purpose of this paper is to provide two kinds of method to distribute the transmission ratio of three-stage cylindrical gear reducer. In the process, all the gears have the full contact stress in every stage. Besides, one method can also obtain the minimum volume of gear reducer and another one is to make all big gears have good flood lubrication. According to the two principles, the equations of distribution on transmission ratio and further a practical distribution graphic are examined, which have the applicable significance of actual engineering and can be the base of the distribution on transmission ratio of other kinds of gear reducer.
The Electro-Hydraulic Proportional Technology-Based Experimental Research into Gradually Pressurization System on Cotton Lap of Roll Machine
Authors: Yu Jian Qiang , Yuan Jian Chang
Published: December 2012

This paper discussed two types of traditional pressurization system on cotton lap of roll machine—mechanical and pneumatic, analysed their working principle, put forward a new design concept, with compact structure, based on the electro-hydraulic proportional control technology and tested with experiments. The results showed its effective function to control pressure stably.
Simulation of the HCCI Combustion Based on Single-Zone Combustion Model
Authors: Jin Yu Sen , Lin Jian Sheng , Yan Ze Shuang
Published: December 2012

A single-zone HCCI combustion model coupled with chemical reaction kinetics mechanisms was set up by AVL-BOOST and CHEMKIN module based on a variable lift and timing (VLT) gasoline. In order to achieve HCCI combustion, the negative valve overlap (NVO) strategy was used to raise the temperature of mixed air in the simulation. In this paper, the HCCI combustion was compared with the conventional SI combustion, then the feasibility of using single-zone model to simulate the HCCI combustion was verified and the HCCI operation region was predicted under specific speed, compression ratio, air-fuel ratio conditions by this model.
Theoretical Study of Transmissivity of Electromagnetic Wave in Magnetorheological Fluids
Authors: Wan Yong Qing , Fan Ji Jun , Yu Nan Hui
Published: December 2012

The internal structure of magnetorheological fluid could change under external magnetic field, as well as its dielectric constant and magnetic conductance. A theoretical model of electromagnetic wave propagation in MRF was established and the basic formula of transmissivity was deduced. Theoretical simulation shows that the electromagnetic wave transmissivity decreases with the increasing of dielectric constant of magnetorheological fluid, and increases with the magnetic permeability. Theoretical analysis indicates that the change of its structure and dielectric magnetic properties of MR fluids is the main cause for the fact that the transmittance could be adjusted under external magnetic field.
The Effect of Electrode’s Material on Immobilization of Sulfite Oxidase Enzyme in Construction of Sulfite Biosensors
Authors: Ghoseyri Airin , Farahbakhsh Afshin , Khakpur Sajad , Hosseinfakhrabadi Nahid
Published: December 2012

Electrodes have an important role in performance of sulfite detector biosensors. To increase efficiency of performance, using immobilizing processes in the structure of an enzyme electrode is very important. Enzymes can be connected to the working electrode by crosslinking and trapping methods. In this paper, sulfite oxidase enzyme has immobilized on aluminum, screen-printed carbon and glassy carbon electrodes in different ways. Flow production measurement of amperometric cycle showed that aluminum and screen-printed carbon electrode had better performance at concentrations less than 110 micro-molar, but in higher concentrations, glassy carbon electrode showed highest conductivity.
Map Matching-Aided In-Motion SINS Initial Alignment
Authors: Zhang Gao Wei , Chen Jia Bin , Song Chun Lei , Wang Ting Ting
Published: December 2012

The paper introduces a novel in-motion SINS initial alignment algorithm using the inertial frame as computing reference. First, dead reckoning method is utilized with the help of the external odometer speed information aiming to eliminate the angular and linear moving disturbances. Second, in order to suppressing the divergence of the positioning error, a new integrated Map Matching algorithm is introduced which is able to reduce the effect of misalignment angle from coarse alignment for positioning error. Road test results show that this algorithm has greatly reduced the coarse alignment of directional accuracy and saved the requirements of speed and route for land vehicles. Not only is the mobility of land vehicle enhanced but also the accuracy of initial alignment of inertial navigation system is improved, which is meaningful in real application.
Development of Integrated Testing Instrument for Mechatronic System
Authors: Liu Bai Lin , Li Lei
Published: December 2012

In order to improve the effectiveness of fault diagnosis for mechatronic system, new integrated testing instrument was developed. The testing instrument was integrated with experience, detected data and complex technical principles. The structure of the integrated testing instrument was introduced. The system is divided into fault diagnosis expert system and signal processing device. Fault diagnosis expert system software is to complete the human-computer interaction, testing process control, test result analysis processing, output display and fault diagnosis. Signal processing instrument includes test signal acquisition, signal conditioning, data acquisition, and data communication. Experiments show that the instrument can find the fault efficiently and improve the maintenance efficiency of a certain type of mechatronic system.
High-Temperature Capacitive Mode Pressure Sensor Based on SiC
Authors: Yu Hui Yong , Lv Hao Jie , Song Wei Zhong , Yang Zhi Bang , Pang Ming Hua
Published: December 2012

In order to realize high-accuracy pressure measurement in harsh environment, a new kind of Double-notches Touch Mode Capacitive Pressure Sensor (DTMCPS) based on SiC material is presented. Through research to material properties of the sensor, the sensor can be applied in high-temperature field. Using Finite Element Method (FEM) to simulate and solve capacitance, the results show that DTMCPS can immensely improve the sensitivity and the linear range of traditional single cavity sensor because of its double notches structure. Consequently, the sensor has outstanding measurement performance in high-temperature environment.
Design and Realization of Helical Rotor NC Automatic Programming System
Authors: Chen Feng , Gu Liang Yao , Yang Yue , Jia Chun Yang
Published: December 2012

Helical rotor is a core component of helical-lobe compressor. Analysis was made on the geometrical properties of tooth curves. Using standard spherical milling cutter on 4-axis NC machine, normal migration method was used to rotor surface processing. Based on the generation characteristics of helical rotor surface, object-oriented design method is used to achieve automatic programming system of helical rotor. The calculation of helical rotor end face profile lines and cutter location point are realized, and over cutting analysis is carried out to generate high efficient numerical control processing program.
Application Boundary Element Method to Compute the Potential of the Eight-Needle Electrodes
Authors: Wang An Ling , Liu Fu Ping
Published: December 2012

According to the electric potential on the eight -needle electrodes in vacuum, the discrete equations based on the indeterminate linear charge density (LCD) are established by the boundary element integral equations. The non-uniform distributions of LCD on the needle electrodes are calculated through solving a set of linear equations. With the help of the LCD, the potential generated by the multi-needle electrodes at any point in vacuum have been obtained. In this paper we have realized the numerical calculation of the static field distributions for multi-needle electrode system by the boundary element approach.
Design of AMT Hydaulic Shift System Based on the Logical-Shift Formula
Authors: Mei Tao , Li Jiang Jiang
Published: December 2012

Based on the shift character of actuator components table of AMT and the Principle of the hydaulic design,it is easy to get the logical-shift formula with the help of the logical analysis,which could help to design hydaulic-shift system .
Automobile Frame Side Rail Detection System Based on Machine Vision
Authors: Men Yu Zhuo , Yu Hai Bo , Wang Hua , Gao Jin Gang , Pan Xin
Published: December 2012

A machine vision on-line detection system for automobile frame side fail mounting holes is proposed in this article to solve the backward and low-efficiency problems for detection methods of large-size automobile frame side fail mounting holes. Many images captured by CDD camera are processed and analyzed by virtue of algorithms such as image stitching, threshold segmentation, edge detection, feature extraction, etc.. The developed detection system prototype has very high detection accuracy.
Dynamic Analysis and Structure Improvements on Machine Tool Bed
Authors: Sun Lei , Wang Ming Hai , Shan Bao Feng , Bai Jin Lan , Zhou Hai
Published: December 2012

The modal analysis of machine tool bed was done by means of finite element method. Find out its characteristics of vibration modal. Then structure improvements on arrangement of tool bed reinforcing plates were done. After the structure improvements the natural frequencies of the tool bed were improved.
Structural Design of the Robot Arm for Massage Based on the Chain Drive
Authors: Wang Zhan Li , Liang Qian , Zhang Bang Cheng
Published: December 2012

With the development of robot technology, massage robot has attracted fully attention, and the study about robot arm has been a growing interest in the area of massage robot. This article has put forward a new massage robot arm, which uses the chain as the main transfer mode by the requirements of the overall design massage of the robot arm. The design of big arm, shoulder joint, forearm, elbow joint and wrist are introduced. Based on the design requirements, we made some improvements with sprockets, ensuring transmission conditions and meeting the massage requirements. And finite element analysis for the designed arm, results show that the structure design can meet the requirements.
A New Design of Programmable Multi-Axis Controller
Authors: Hu Ying Zhan , Zhu Qing Zhi
Published: December 2012

On the system development platform based on SOPC Builder, completed transplanting µC/OS II on the Nios II. The paper change the front-back control traditional method by task design concept and assign system task to multiple different level task which is deployed by PRI to achieve the different operation task of robot. So the paper transfer the mechanism of traditional system soft which operate under one task sequence performance mechanism. According to experimentation, this method reduces the period of software development greatly, and it also improves the real-time’s property, reliability and expansibility the software well.
A Robot Vision System in ABU Robocon Contest: Visual Servoing Navigation and Object Tracking
Authors: Li Xi Hua , Zhang Ping , Lin Si Na
Published: December 2012

This article took the 2011 ABU Robocon Contest as background, and introduced the design and implementation of a vision system for visual servoing navigation and object tracking in this contest. For visual servoing navigation part, it had a series of simple image processing and then added to a previous control law; tests showed only 3cm distance and 1°angle error occur when robot ran one line of 6m. For object tracking part, article introduced a combined algorithm for the detecting of a black and white semi-circle object, which moved quickly and uncertainty in a colorful background and shining environment; tests showed the proposed algorithm work better than other exist algorithms in complex environment.
Duffing Chaotic System Stability Control Based on Sliding Mode Control
Authors: Ma Ding
Published: December 2012

Considering the Duffing chaotic system, the problem of stability control based on the terminal sliding mode variable structure is studied. A new terminal sliding mode surface and control law are designed. On this basis, the stability of closed-loop system is analyzed. Simulation results show the effectiveness of the control method.
An Intelligent Water-Saving System
Authors: Yang You Ping , Weng Hui Hui
Published: December 2012

Now, to the phenomenon of a serious waste of water and low utilization of water resources in our country, a new intelligent water-saving system which can automatically collect cleaner waste water and rain water is introduced, in order to improve the utilization rate of water and save water. Detailed description of how the intelligent water-saving system works, and illustration of the working principle of the intelligent water-saving system; To economize on water resources to the maximum extent, put forward the idea of combing with buildings, so as to collect water through multi-channels; To make the intelligent water-saving system to get extensive promotion and application, bring forward some corresponding measures. In short, the intelligent water- saving system can achieve the maximum water-saving effect.
Multi-Echelon Integrated Inventory Control Strategy of Equipment Spare Parts
Authors: Gu Hong Qiang , Zhang Cheng , Shi Quan
Published: December 2012

Inventory control strategy of spare parts is an effective way to improve equipment support efficiency and scientific and reasonable inventory policy can make spare parts availability reach the upper limit. Multi-echelon integrated inventory control strategy of equipment spare parts is studied. Three-level integrated inventory control model consisting of rear warehouse, equipment using units and spare parts supplier is established according to the architecture and control program of multi-echelon joint inventory. The algorithm of solving the proposed model is analyzed and a numerical example is provided. The proposed equipment spare parts inventory model can improve inventory quality to a certain degree and decrease the contradictions between inventory and maintenance. The correctness and effectiveness of the proposed model are verified by the example, which provides an effective model for equipment spare parts inventory.
A System of Multistep Self-Learning Forecast and its Application on Oil Refining Industry
Authors: Chen Jing
Published: December 2012

The catalytic cracking unit of oil refining industry, is a complex process characterized by its prolonged time delay and strong coupling ability.This system adopts the method of modern control theory, artificial intelligence combined effectively production techniques, researchs the problem of the multistep self-learning experience forecast online by computers and its applications in oil refinery. The system guides and optimizes the operations of the production process based on its memory, comparisons and analysis. The system is very effective to increase yield; It has been applied and popularized in 20 large-scale or middle-scale oil refining corporations.
Based on Adaptive Control in the Process of the Liquid Level Instrumentation Control System Design
Authors: Cai Miao Miao
Published: December 2012

On complex process control frequently encountered in nonlinear, inertia big, delay time longer phenomenon, is put forward based on adaptive control in the process of the liquid level instrumentation control let more model, hardware design on the input signal processing channel unit, regulators unit, output signal processing channel of unit, use control system has the deviation of the signal, may make the output of the best control signal. The control mode can not dependent on the mathematical model of the object, can be applied to many order, nonlinear, multivariate occasion. This paper provides the simulation model, and the simulation results show that the system has to level good robustness and controlling, and the controller is simple and relatively easy to implement, and has the obvious engineering application value.
Research on Cogent Automatic Fingerprint Identification System
Authors: Zhang Rui , Wang Feng
Published: December 2012

Cogent Automatic Fingerprint Identification System (CAFIS) was researched by Cogent Co. Ltd. This system filtrated and matched fingerprints feathers automatically by computer to search for similar fingerprints, which are identified by specialists finally. It can provide help for criminal cases. About CAFIS, this paper introduces the principle, fingerprint identification process and the system workflow. Then, it researches five functions modules; they are image acquisition, screening, feathers matching, scoring and sorting; and introduce the algorithm of feather matching briefly. Experimental results show that it has many advantages, such as the big capacity of database, quick matching speed, high accuracy, etc.
Development of Full-Automatic Flap Disc Production Machine Based on PLC Control System
Authors: Tang De Huan , Feng Wen Jie , Luo De Yang
Published: December 2012

This paper designed a control system for the full-automatic flap disc production machine, the whole control system was designed based on high-performance PLC of Mitsubishi Q series, QD75P positioning module, servo motor of Mitsubishi HF series and other advanced industrial control technology. The control system realizes the target of precise positioning and high-speed responding, and the hardware and software of control system has a stable performance.
Pole-Placement for Multi-Input Linear Systems by State Feedback or State-Derivative Feedback
Authors: Gao Zun Hai , Ye Xi Chen
Published: December 2012

Generalized Wonham controllable canonical forms are introduced to apply to pole placement of state feedback or state derivative feedback. New methods of pole placement of both state feedback and state derivative feedback for multi-input system are proposed. The theory and approach are introduced, and the general expression gain matrices containing arbitrary parameter are obtained for both state feedback and state derivative feedback of the multi-input system.
A Merging Method for Siphon-Based FMS Maximally Permissive Control with Simple Structures
Authors: Chao Daniel Yuh , Pan Yen Liang
Published: December 2012

It has been a hot race to design optimal controllers to be maximally permissive with fewest monitors in the shortest amount of time. Recent maximally permissive deadlock prevention controls for S3PR (Systems of Simple Sequential Processes with Resources) reduce the computation burden by considering only a small portion of all forbidding markings and employs much fewer monitors by a linear integer programming method. However, it still requires costly reachability analysis. This paper proposes a method (the first of its kind) to merge several monitors into a single one while not losing states. It achieves the same best results in the literature while avoiding the time-consuming reachability analysis which does not scale well with the size of the nets.
Research on Automatic Testing System of Vehicles Steering Angle
Authors: Fu Hu Dai , Wang Zheng Zhong
Published: December 2012

It mentions not only the testing mechanism, but also the system’s mechanical structure and the detailed methods of hardware and software of the according testing equipment. It comparatively covers the whole studying and developing process of the system. Advanced technology, such as, computer, electronics, sensors and air-pressure driving method are adopted in the system, which not only realize automatic tracking, accurate positioning and fast testing, but also makes it possible to be low in cost, easy to be handled, as well as its high accuracy and powerful net performance.
Research and Application of Automation Controlling System for Plate Ultra Fast Cooling Process
Authors: Chen Xiao Lin , Wang Bing Xing , Tian Yong , Yuan Guo , Wang Zhao Dong , Wang Guo Dong
Published: December 2012

To implement the new generation thermo mechanical control process (NG-TMCP), the automatic control system of ultra fast cooling (UFC) was developed by combined with the renovation project of controlled cooling system in one plate production line. This system was composed of basic automation subsystem and process automation subsystem. As the main control unit of the basic automatic control system, a S7400 PLC system is used to control the UFC device and to achieve the chain control between the UFC system and the mill system. While the process control system is to realize the automatical setting of the cooling schedule by the developed finite element temperature field model and the temperature homogeneity model. The industry application shows that the NG-TMCP which is based on the UFC can reduce the alloy content effectively and implement the low-cost reduction produce of high-grade products.
Parallel PSO-Based Optimal Strategy Study of Energy Efficient Operation Control for Train
Authors: Hu Hui
Published: December 2012

Different from existing evolutionary algorithms which usually are implemented in serial computation mode, two improved parallel particle swarm optimization algorithms based on parallel computation structure model are proposed to search the energy efficient operation strategy for a train in railway network. The algorithms are designed and verified using a simulation case. Compared with other methods, these improved parallel PSO-based algorithms have a much better performance in efficiency and may be considered to put into practice.
The Improvement of Control System of Wind Turbine Gearbox Test Device
Authors: Li Xiao Long , Liu Dan , Wang Chun Xiu
Published: December 2012

Aim at technical improve of the control system in the Wind Turbine Gearbox Test Device at a factory of Yinchuan , the design plan of the control system Based on Mitsubishi FX series PLC,FX2n-4AD,FX2n-4DA,Mitsubishi FX series Ethernet adapters and King View are put forward ,lower processor was composed by FX2N series CPU module and I/O module in that control system , moreover , centralized management and real-time monitoring of collect data are carried out through the upper processor that adopts industrial computer and King View . Through the improvement device become automation, enhance safety and capacity of product development of company.
Robust Design of an Ultra-Thin Centrifugal Fan on Fuzzy-Based Taguchi Method
Authors: Hsien Kuang Hung , Huang Shyh Chour
Published: December 2012

The objective of this paper is to apply the Taguchi method with fuzzy inference for optimization the design of an ultrathin centrifugal fan with multiple performance characteristics. The weight of fuzzy rule controlling the system can be adjusted in this study. Taguchi’s concepts of orthogonal array, signal to noise (S/N) ratio, ANOVA, and weight of fuzzy rule were used to study the multiple-objectives in the ultrathin centrifugal fan design. The results showed that: (1) the inlet dimensions have a significant influence on the volume flow rate, whereas outlet dimensions, inlet dimensions and blade angle have a significant effect on the static pressure; (2) appropriate adjustments the weight of fuzzy rule can be obtained a better design parameters for the objective.
A Effective Equalization Based on Multi-Mode for Series Grouped Battery Strings
Authors: Zhang Shu Mei , Yanig Lin
Published: December 2012

In applications of lithium-ion batteries, a equalizer is required to enhance life time and guarantee safety. A simple technique that provides effective equalization in terms of battery voltage for a series string of battery cells is presented. The mainly circuit technique of two-level DC/DC converters substantially simplify the structure. Moreover, multi-mode equalizing algorithm effectively enhances the uniformity of batteries. The operational principles and design considerations are verified and equalization performance is greatly improved compared with ordinary methods.
The Improved Design of Engine Ignition System
Authors: Zhao Jun , Zhang Tao , Su Jian Xin , Luo Guang Ming
Published: December 2012

This paper introduces a technical improvement scheme for aviation engine ignition system, due to the reason that existing aircraft engine ignition system uses one machine type and each engine ignition system can not be interchangeable in present situation .It also presents a general ignition circuit structure and fast specialty setting method, both of which have been simulated by Multism software. And the results of simulation show that the airline engine general ignition system can meet the requirements of ignition technology parameters for all engines by setting quickly. The technology has significant influence in improving general use of airline engine spare parts, simplifying the engine maintenance system and increasing the warplanes attendance.
On Application of LDPC Coded Modulation in Optical Fiber Communication
Authors: Wang Zhong Xun , Wang Peng Xiang
Published: December 2012

In order to meet the demand for higher capacity transmission over optical fiber communication, we propose a new LDPC coded modulation scheme. Using spectrally-efficient modulation format and LDPC codes, the proposed scheme offers an advanced forward error correction (FEC) solution. From the simulation results, we can get the SNR at the bit error rate (BER) of 10-7 as 3.8dB, 5.5dB, and6.9dB when 16-, 32-, and 64-points constellations are used, respectively.
Design of High-Speed Remote Image Data Storage Memory Based on LVDS
Authors: Zhang Hui Xin , Guo Zheng , Ye Yong
Published: December 2012

Due to the characteristics of the large amount of data and the high rate of transmission in the system of remote image acquisition, introduces a remote image storage memory based on the LVDS. The FPGA design as the core, and adopting the LVDS interface solution string and the drive chip combined, ensure the effective of receiving remote data. Meanwhile the system adopted the flash programming technology of alternative two-plane to storage the image data. It realized the speed of 28.95 MB/s high-speed real-time image data storage requirements in system. The application shows that the data memory stable and reliable, meets the practical requirements
Design of Azimuth-Sign Wireless Autonomous Positioning System
Authors: Pan Gao Feng , Wang Jue , Xue Jun , Zhang Yong Liang , Liang Sheng
Published: December 2012

Azimuth-sign is a benchmark facility for the TT&C ship’s equipment during the dock calibration. Because the current way of measuring is tedious, the azimuth-sign does not suit for the changing environment. To ensure the accuracy of the measurement, we must increase efficiency and improve automation calibration level. The paper introduces a system of wireless autonomous positioning system. Through analyzing the principle, we give the design scheme of the system. The paper introduces briefly the hardware and software of the system. The test of the system shows that the design is reasonable and the precision of positioning meets the requirement.
Three Dimension Thermal and Mechanical Simulation of Microbolometer to Detect Terahertz Wave
Authors: Yu Lei , Wang Jun , Yuan Kai , Wang Chong
Published: December 2012

The teraherz (THz) wave in the far-infrared wave band has been showing its value in many areas in life. The detection of THz wave with microbolometer was simulated in this paper. The thermal and mechanical simulation were carried out by Intellisuite, a professional simulation software of MEMS. The influence of micro-bridge structure on the device performance was studied and simulation results showed that the bridge leg shape and width affected mainly on the thermal and mechanical properties of device. A compromise design between the thermal and mechanical properties was obtained in order to maintain the best performance of the device.
The Contactless Card Reader Based on Microcontrollers
Authors: Liu Xiang Wen , Liu Li Min
Published: December 2012

Contactless cards are smart cards with microprocessor cores. Their applications of are very popular, such as public transports, access control, cashless payment, campus solution and so on. Reader is an essential part for smart card applications. It can identify cards, read/write data on cards. Microcontrollers are common hardware for embedded applications. With microcontrollers, the readers of contactless cards will be smart and easy to be used. In this paper, smart cads, contactless cards, readers, microcontrollers and design of a reader with microcontrollers are discussed.