bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Facility Layout of a Manufacturing Shop Based on SLP Method
Authors: Li Qin , Yang Guang Chun , Chen Xin De
Published: November 2012

Aimed at the production technological process, analysis has been carried out on the current situation of workshop layout, and find out the existed problems; Systematic Layout Planning (SLP) method is exerted to analyze the workshop concerning relationship between logistics and non-logistics, draw out correlation diagram of location of working unit and correlation diagram of area of working unit. Two optimum proposals are determined according to the realistic of workshop, and weighting factor method is adopted for evaluation, thus obtain the optimal layout proposal. So that aims are achieved for workshop like shorter logistics route, effectively usage of space and resource, improvement of working environment and improvement of production efficiency of enterprises.
Optimizing the Operation Sequence of Chip Shooter Machine Based on the Particle Swarm Optimization Algorithm
Authors: Liang Wan Lei , Guan Xiao Dan
Published: November 2012

The mounting process is the key factor of the placement efficiency, it is also important for the improvement of the efficiency of whole production line and decrease of the cost. This paper analyzed the mounting process of the Chip Shooter machine, applied the PSO algorithm, constructed the corresponding coding system, proposed the corresponding particle update mechanism, introduced the partially matched crossover idea of the genetic algorithm into the PSO algorithm, and designed the new re-scheduling method of feeder position assignment to optimize the position assignment of feeders and the pickup and placement sequence of components, thus improved the placement efficiency. After comparing the results before and after the simulation test for selected 8 pieces of PCB, the average efficiency of this algorithm is 7.09% higher than genetic algorithm method that is based on sort encoding. The experimental result shows that, this algorithm is more efficiency on the improvement placement efficiency and decrease of the placement time for the chip shooter machine.
Effect of Calibration Grid Size and Position on Machine Vision Measurement
Authors: Sun Jie , Xu Zeng Pu , Zhou Cong Ling , Wang Yong Qiang
Published: November 2012

In order to improve the measurement accuracy of machine vision, this paper focuses on the effect of calibration grid size and position on machine vision measurement accuracy by analysing the measurement error of the points inside and outside of the grid. The experimental results show that the measurement accuracy of the internal points is higher than that of the external points. The measurement errors increase firstly, then decrease, increase, and finally decrease which measuring point from the edge to the opposite edge in the calibration grid. While measurement errors of outside points increases with the increasing distance to the corner point. If the center of calibration grid coincides with the center of calibration board, measurement accuracy is high. However, if the center of calibration grid doesn't coincide with the center of calibration board, measurement accuracy is low. This results may provide direct means for the application of machine vision system in engineering.
Underwater Dam Image Crack Segmentation Based on Mathematical Morpholog
Authors: Chen Cong Ping , Wang Jian , Zou Lei , Zhang Fa Fun
Published: November 2012

An adaptive underwater dam image crack edge detection algorithm, which was based on multi-structures and multi-scale elements, was presented for the deficiencies of regular and single structure elements edge detection. Firstly, six representative structure elements were constructed and the structure elements were expanded by multi-scale analysis method. Then, multi-structure and multi-scale elements were used to detect crack edge separately. The adaptive weighted coefficients were determined by the edge information entropy. Finally, the image edges can be obtained by the synthetic weighted existing edges method. The experimental results demonstrate that the proposed algorithm not only can remove the noise effectively but also maintain the image edge detail well.
Research of the Relationship between Measured Displacement and Pixel Displacement of Binocular Vision Sensor
Authors: Xu Jie , Wang Juan , Wang An Hua
Published: November 2012

The calculation model of binocular vision sensor is constructed based on the detection principle of laser triangle geometrical relationship in the circumstances of the measured object non-static when measuring the vision sensor, the relationship between the measured object displacement and the CCD image point displacement. Measured point is researched and two-dimensional space coordinates of the measured point is calculated. Analyzed the relationship between displacement and structure parameters and simulated by matlab, optimized the optical parameters, in order to complete the measurement task better.
Identification of the Hook on Investment Casting Shell Line Based on Machine Vision
Authors: Tian Xi Jie , Yu Jing , Li Chang Chun
Published: November 2012

In this paper, the idea identify the hook on investment casting shell line based on machine vision has been proposed. According to the characteristic of the hook, we do the image acquisition and preprocessing, we adopt Hough transform to narrow the target range, and find the target area based on the method combining the level projection and vertical projection, use feature matching method SIFT to do the image matching. Finally, we get the space information of the target area of the hook.
A Method of Image Restoration Based on Sparse Regularization
Authors: Wang Shu Zhen , Zou Zi Jian , Li Li , Zhang Xiao Ping
Published: November 2012

Blind deconvolution is the restoration of original image from a blurred one when the blur kernel is unknown. While recent algorithms have afforded dramatic progress, the results are still far from perfect in terms of efficiency and stability. In order to gain a stable, unique and effective solution, this paper uses a scale invariant and sparse regularization function to exert regularization constraints on the original image and PSF simultaneously. An experiment is conducted to verify that our image blind recovery algorithm is robust and has stable convergence.
Two-Stage Design for Cellular Manufacturing System
Authors: Gou Ling , Lu Cong , Fei Jun Feng
Published: November 2012

Cell formation（CF）and cellular layout design are the two main steps in designing a cellular manufacturing system (CMS). Efficient grouping is the prerequisite of a successful Cellular Manufacturing, and it is too hard to obtain a perfect consequence of CF and layout simultaneously. In this paper, a two-stage strategy is used to solve CF problem and layout sequentially. At the first stage, the cells are formed based on the part-machine clustering results obtained through the genetic algorithm, to get the initial inter-cell layout. At the second stage, the genetic algorithm is used to improve the solution obtained, to minimize the handling cost and maximize the utility of the machines.
Iterative Closest Point Method with a Least Trimmed Squares Estimator
Authors: Yan Ying , Xia Qi , Wang Ke
Published: November 2012

The iterative closest point (ICP) method is one of the most important methods for 2D/3D point registration. Robust statistical method is applied widely for improving the robustness of ICP. A new method that incorporates the Least Trimmed Squares (LTS) Estimator into the ICP is proposed in this paper. In this method, outliers are removed according to characteristics of residual distribution. A large number of experimental results show that the proposed method is robust and efficient.
Modeling and Simulation Based on Ultra-Wideband Pulse Source of Time-Domain Reflectometer
Authors: Mou Li Xia , He Ling , Cao Yong
Published: November 2012

The ultra-wideband pulse source is one of the key factors which decide the time-domain reflectometer’s specification including the testing bandwidth’s accuracy and veracity. Design a good pulse source is the major premise to improve the time-domain reflectometer’s performance. This paper introduced a new style of simulation realization using ADS2009. This simulation focused on the analyses of the importance of the pulse source in the time-domain reflectometer, described pulse source’s pivotal component step recover the diode’s characteristic and accomplished the modeling analyses.
Analysis of Multi-Channel Virtual Temperature Measurement System Hardware Design and its Uncertainty
Authors: Liu Ke Qin , Pan Xue Tao , Cai Jian Wen
Published: November 2012

According to a number of issues in the traditional temperature measurement, the multi-channel temperature measurement system based on virtual instrument is developed. In terms of measurement range and accuracy, Integrated Temperature Sensor TMP36, platinum resistance Pt100, and K-type thermocouple are selected to achieve multi-point temperature measurement, signal conditioning circuit is designed to match with every sensor. On this basis, combined with the technical parameters of each component, by means of the theory of uncertainty, analysis of the total uncertainty of system has been made. The calculation results show that the selection of each component for the temperature measurement system is reasonable, which can completely meet the measurement requirements.
The Graduation Fault Diagnosis Algorithm’s Study and Simulation Based on Immune Neural Network and Fuzzy Logic Applied in Complex Industrial System
Authors: Su Jian Yuan , Hong Wei
Published: November 2012

Industrial system has the characteristics of large scale and high complexity and much variable. Fault diagnosis with single theory or method is insufficient accurate. This paper presented a kind of graduation fault diagnosis algorithm based on immune neural network and fuzzy logic. As an example of the cooling system in nitric acid production process, the cooling system is divided into loop level and component level, using immune neural network to identify loop level faults, using fuzzy logic to identify component level faults. The simulation results show that the graduation fault diagnosis algorithm based on immune neural network and fuzzy logic has faster training speed and better generalization ability, and it can distinguish multi-routes faults. This algorithm can be used fault diagnosis for other complex system.
Sound Radiation Analysis of Thin Plate Using FEM and BEM Method
Authors: Pei Shan Bao , Liu Rong Zhong
Published: November 2012

The relationship between the sound power and the stimulated frequency of thin plate is analyzed, and the influence from frequency is also introduced. The result presents the characteristic of thin plate sound radiation when the stimulated frequency approaches the natural frequency, while radiation difference of the square plate and the rectangular plate is also given. The analytical results present the guide for low noise design of thin plate in engineering.
Pinning Control on Directed Complex Network via Identifying Spanning Trees
Authors: Sun Zong Hai , Feng Fu You
Published: November 2012

Previous works had proved that a directed complex network could be pinned to its equilibrium by a single controller if it had a spanning tree. But in fact, most of the real networks do not have spanning tree. In this paper, we study the pinning control of a general directed network without spanning tree. We prove that a general network could be divided into some sub-networks with spanning trees, and then the aggregation network is stabilized by stabilizing every sub-network with a single controller. As an illustrative example, a network without spanning tree is simulated to verify the effectiveness and convenience with the selective pinning control strategy.
The Design of a Data Acquisition System for Wave Energy Conversion Efficiency Measurement System
Authors: Wang Shou Jun , Wang Guo Dong , Li Yu Sen
Published: November 2012

This paper mainly introduces the design ideas of data acquisition system for wave energy conversion efficiency test system and the usage of data acquisition card.Visual C++6.0 is used as the design platform for the design of the software. The acquisition process is controlled by the multimedia timer and the real-time multi-channel data is collected through the data acquisition card Then the real-time data curve is displayed on the software interface. The collected data can be used as an effective basis for optimizing energy conversion devices.
Realization of Communication for Automobile Exhaust Wireless Monitoring System
Authors: Chen Hong Yan , Zhang Yi Long
Published: November 2012

For the vehicle emission pollution has become to be a serious problem, with the use of GPRS/GSM wireless communication technology the automobile exhaust emission information can be sent to the remote central server, realizing the purpose of remote monitoring management. This paper introduces the composition and working principle of this system which uses the three-layer structure of car-terminal, wireless network and PC monitoring center. And emphatically studies one kind of methods based on the generic TCP protocol, Socket, multiple threads technology and ASP.NET technology to realize the B/S mode monitoring system communication.
Constant Speed Motion Simulation and Error Analysis of Planar Non-Circular Curve Parts
Authors: Wu Rui , Bao Li , Xu Yuan Kui
Published: November 2012

The relative direction for a constant speed can be determined according to the planar non-circular curve parts. To establish the mathematical model, a constant speed motion simulation system is designed. The parameters of (vH=5mm/s, δ<3") is commonly used for the simulation system to simulate the movement of drawing the error curve. The results show that by controlling the movement of the plane curve parts in mathematical model can derive the basic constant speed, the relative error of constant speed is less than 3%, it provides a reliable bias when apply to production practice.
Research on the Application of the Fuzzy Control Algrithm in the HAPC System
Authors: Ma Jing Qing , Chen Hai Bo
Published: November 2012

The HAPC(Hydraulic Automatic Position Control) requires quick dynamic response and high control accuracy. Based on the research of the HAPC system, I build the HAPC mathematical model, then design both the Conventional PID controller and fuzzy PID controllers, simulate the two control methods using the MATLAB software, analyze the main factors which influence the results. The simulation results show that the fuzzy PID controller has the better effect in the dynamic response and the control accuracy than the former.
Test Method of Current Leakage for Dielectric Paste
Authors: Hou Zhi Hong
Published: November 2012

A test method of current leakage for dielectric paste was proposed by simulating the application processes of dielectric paste for manufacturing the dielectric layer in the multilayer thick film hybrid microcircuit. That is, by screen printing and sintering processes, the sliver conducting layer was fabricated on the surface of glass substrate, and then dielectric layer, finally the glass substrate sample with conducting layer and dielectric layer was dipped in 5 Wt% NaCl aqueous solution. The conductive line was soldered on the silver conducting layer to form the test circuit, and powered with 5 volts direct power, the current in the test circuit was taken as the current leakage of the dielectric paste. The method may be used to evaluate the current leakage of dielectric paste.
Design of Vehicle Anti-Theft Alarm System Based on DSP-GPS
Authors: He Juan , Tan Zhi Yun
Published: November 2012

An intelligent vehicle anti-theft alarm system has been designed with DSP technology and GPRS technology. This system is mainly composed of a signal collection system, alarm system, control system, communication system and the four wheel locking system, which can realize the safety status monitoring of vehicle after parking, the dialogue of people-vehicle under unsafe conditions and tracking and positioning of the vehicle after stolen. But the system has a wide range covering network, information transmission speed, low cost and the use cost , small blind area and multiple anti-theft functions and so on. A new way and thought has been provided for automobile anti-theft protection.
Research of Vehicle Collision Warning System
Authors: Wang Hong , Xie Li Qin , Lu Yong Xia , Gao Jian Guo , Zeng Qiang
Published: November 2012

The safety performance of vehicles are divided into two types, one type is called" active safety", i.e. before the accident prevention, prevention measures.The other type is referred to as" passive safety", i.e. when the accident happened, the vehicles and personnel to take protection measures. People usually focuses on the passive safety of this idea seriously quite, people now pay more attention to the active safety design. This paper introduces several kinds of vehicle collision avoidance system ranging modes, and discusses the intelligent collision warning system.
Research on Energy-Saving for Air-Conditioning System Based on Frequency Conversion Technology
Authors: Zhu Bao Hua , Ning Bo , Du Qiang
Published: November 2012

The marine air-conditioning system accounts for about 20 percent of the capacity of the power grid. In order to reduce the power consumption of this system, the operating status of some main plants is analyzed. It is found that employ some advanced technology and strengthen the managements can effectively reduce the energy consumption. Although the purchase cost for these advanced plants is great, the operating cost is small. In the long run, large quantity of power can be saved.
Fault Diagnosis System for Roller Coaster Based on Acceleration Signals
Authors: Li Gen , Zhu Yu Tian
Published: November 2012

Based on the requirements of special equipment safety and the current status of recreation facilities test system, a fault diagnosis system for roller coaster was designed. The signal acquisition device was designed, taking digital signal processor as the main control chip. High-frequency vibration acceleration signal and low-frequency motion acceleration signal were acquired. And the data were transmitted to upper computer. By using LabVIEW, the software of upper computer was developed. FFT analysis and wavelet analysis were applied to process the data. BP neural network was applied to fault diagnosis. The test result shows that the system is quick, accurate and reliable.
Research on Simplified Slope Measurement in Pneumatic Measurement System for Inner Hole Honing
Authors: Ning Hui Feng , Li Hui , Li Xiao , Gong Jun
Published: November 2012

It is presented that a novel concept to estimate the shape of inner hole and calculate the location of reversing point in course of honing in this paper. Based on analysis of machining condition, Simplified slope measurement model is established in pneumatic measurement system for inner hole honing. The method and principle are elaborated in this article. The model can accurate the accuracy of machining area in inner hole. Program module was designed and written for experiment. And the experimental data show that the measuring model is feasible
Applications Research on the Synchronization Control of Multi Hydraulic Cylinders of Dump Truck
Authors: Zhao Guo Hua , Chen Jian Guo
Published: November 2012

Abstract: In this article, a three-hydraulic-cylinders synchronization control model of the hydraulic system of a large dump truck is discussed and the proportional integral (PI) control is used for the hydraulic system. Simulation and performances comparison between the improved and unimproved system have been done by using MATLAB 7.10. To meet different practical engineering requirements, different control methods are designed and selected，aiming to the practical purpose.
Steady Hydrodynamic Force Analysis of Non-Circular Opening Hydraulic Spool Valve
Authors: Huang Hao , Li Xiong , Sun Zhong Wei
Published: November 2012

Hydrodynamic force is one of the important factors to be considered in the design of hydraulic valves. In this paper, mathematical formula of steady hydrodynamic force was deduced basing on non-circular opening spool valve structure and working principle. The simulations were carried out with software FLUENT at differential pressure, different valve port openings, and then the variation of the steady hydrodynamic force can be obtained. The results show that the direction of the steady hydrodynamic force is opposite to the movement of the valve spool and tends to close the valve port; the magnitude of the steady hydrodynamic force is proportional to the valve opening and differential pressure respectively.
Design of Hydraulic Cylinder Speed Control System Base on High-Speed on-Off Valve
Authors: Gao Qin He , Guan Wen Liang , Song Hai Zhou , Yang Zhi Yong
Published: November 2012

In order to study the Application of high-speed on-off valve in the hydraulic cylinder speed control system, series and parallel application schemes between high-speed on-off valve and hydraulic cylinder are proposed to control the speed of hydraulic cylinder. The duty cycle of pulse control signal was changed according to the displacement of hydraulic cylinder to control the speed of hydraulic cylinder and weak the impact. The simulation curve compared with the experimental results show that, two application schemes can both control the speed of hydraulic cylinder effectively. Series application scheme can be only applied to small flow hydraulic system; parallel application scheme has wider application.
Simulation of Ecological Floating Island Fixation Methods under Different Flow Velocity
Authors: Su Fang Li , Li Hai Fu , Wang Tie Liang , Shi Sheng Yu
Published: November 2012

For the purpose to provide a reference for ecological floating island construction of Liao river, this paper simulated different flow velocity to research the stability of floating island with different fixation methods based on the actual hydrological data of Liao river at the comprehensive experimental base of Shenyang agricultural university. Results show that the stability of floating island with different fixation methods under different flow velocity have significant difference. The data of longitudinal displacement shows the stability of staking floating island is best, the following one is cableway and the sinker is worse. The data of lateral displacement shows the stability of cableway floating island is best, the following one is staking and the sinker is worse. The data of vertical floating displacement shows the stability of cableway floating island is best, the following one is sinker and the staking is worse. Comprehensively, the stability of cableway floating island is best, staking is better and the sinker is less stable. Consequently, this study recommended the cableway and staking floating island as the ideal types in experimental construction in Liaohe river.
Experiment of Artificial Floating Island Displacement Pile Fixation
Authors: Su Fang Li , Shi Sheng Yu , Li Hai Fu , Wang Tie Liang
Published: November 2012

For providing refer to the experimental data of artificial floating island in river north, this study will get stability characteristics of artificial floating islands displacement pile fixation on simulating the impact of different flow rate of water. Analysising physical stress of artificial floating island displacement pile fixation and simulation, result shows that the sum of floating island of buoyancy and the maximum force of two fiber rope in the vertical direction should be greater than the maximum gravity of the floating island plants and ensure the maximum force of the two fiber rope in the horizontal direction must be greater than the flow momentum, the quality of floating island can be increased for improving stability. Depend on the different flow of water and linear regression equation, the distance between the floating island should be arranged reasonably.
The Influence of Cross Angle on the Flow Ripple of Axial Piston Pumps by CFD Simulation
Authors: Wei Xiu Ye , Wang Hai Yan
Published: November 2012

This paper studies the flow pulsation of axial piston pumps of different cross angles based on CFD simulation. The swash-plate cross angle of piston pump affects the piston pump outlet flow pulsation by changing the contraction amount of the plunger in the valve plate transition zone. First, we established the flow pulsation model with swash plate cross angle based on the noise reduction principle of the swash plate cross angle, and studied the influence of cross angle of different rotation angels on the flow pulsation based on CFD simulation. The conclusion is that the maximum and minimum peak of the flow pulsation decreased when the rotation angle of the cross angle is greater than 1 °; the maximum and minimum peak of the flow pulsation increased when the rotation angle of the cross angle is less than -1 °; a good noise reduction can be got when the piston pump cross angle rotates 1°.
Synchronization Control of High Speed Tracked Vehicle with Hydrostatic Drive
Authors: Zhang Hai Ling , Li Chun Sheng , Li He Yan , Ma Biao
Published: November 2012

A synchronization control strategy with cross-coupling concept for tracked vehicle with hydrostatic drive is developed and compared with a leader-following control strategy, aiming to achieve stable straight running. Associating with the basic controller, the two kinds of synchronization controllers are designed. Dynamic system model containing the control strategy for entire tracked vehicle is modeled in MATLAB/Simulink, the results of simulation indicate that, compared with leader-following control strategy, the cross-coupling strategy can restrain synchronization error more effectively and make the system more stable obviously under external disturbances by coordinates the motion of two drive loops simultaneously.
Study on the Key Factors of Wet Gas Metering Overreading in Standard Venturi Tube Base on DPM
Authors: Xu Ying , Zhao Yi , Long Zheng Hai
Published: November 2012

This article discusses how and why the wet gas metering overreading produce for a standard Venturi tube by analyzing the influence of the key parameters of X parameter, the Froude number and pressure. The adopted multiphase model is DPM. The results of simulation are compared with the experimental results of National Engineering Laboratory. The maximum relative error of the predicted overreading from simulation is 5.14% and the average relative error is less than 2.8%.
Analysis and Simulation of Inner Flow Condition of a Novel Rotary on/off Valve
Authors: Chen Jian , Su Zhu Ming , Zhou Qi , Shu Jian Ping
Published: November 2012

A novel hydraulic rotary high speed on/off valve is investigated. The function of the outlet turbine and the effect on revolution speed of valve spool are analyzed. The inner fluid flow condition under full open case of the on/off valve is simulated using computational fluid dynamics(CFD) method based on Ansys/Fluent and velocity and pressure profiles of fluid inside valve are obtained. Suggestions on optimizing the geometry of valve to decrease transition losses are given.
Investigation of the Relative Gas Volume in the Discharge Gap when Using Water in Oil Emulsion as Dielectric
Authors: Zhang Yan Zhen , Liu Yong Hong , Ji Ren Jie , Cai Bao Ping
Published: November 2012

The gas presented in the discharge gap which was generated by the decomposition and vaporization of the dielectric due to the extremely high temperature in the EDM process plays an important role in the aspect of EDM performance. In this paper, the relative gas volume in the discharge gap is investigated when water-in-oil (W/O) emulsion was used as dielectric. Parameters, such as peak current, pulse duration, water content of the W/O emulsion were researched. Experimental results show that the relative gas volume in the discharge gap was significantly affected by discharge energy. Besides the discharge energy, water content of W/O emulsion is another significant factor that affects the gas volume in the discharge gap.
Numerical Simulation on the Flow Field in Melt Pump
Authors: Wen Jin Song , Zhou Xi Ling
Published: November 2012

In this paper, 3D finite element numerical simulation was used on the flow in the XXXX melt pump with POLYFLOW. By numerical simulation analysis on the flow field in the melt pump, distribution characteristics of pressure, flow velocity vectors and shear rate in the melt pump were obtained. Finally, the effects of inflow rate on the pressure difference between the exit and the entrance of the melt pump were investigated by analyzing the pressure field of the melt pump, which could be used to guide the design of melt pump and the plastics molding process.
Research on Fast Forward Position Solution of Parallel Mechanisms
Authors: Han Xiu Ying , Guo Ai Fang
Published: November 2012

It is difficult to obtain analytical solution to forward kinematics for parallel mechanism, and the speed of the solution based on conventional numerical solution method is lower, and hard to achieve real-time performance in motion control. In this paper, in order to avoid the two problems, a forward position solution method was proposed to approach the forward kinematics analytical solution exponentially. The Stewart platform was taken as example, its kinematics model was built, and then according a complex motion trajectory of moving platform given, the driving displacement of actuated joints was solved by inverse kinematics method, and then based on the driving displacement trajectory of actuated joints, using the forward position solution method, the forward kinematics solution was obtained, the simulation results showed that the forward position solution method can not only completely ensure real-time performance, but also attain very high accuracy, and so the forward position solution method for forward kinematics can be applied in motion control of parallel mechanisms.
Research on MP-X Assembly Line Planning Simulation Based on Flexsim
Authors: Wan Jian Ye , Gao Li Yuan , Xu Zhen Fu
Published: November 2012

This paper focuses on the automobile assembly line redesigning issues. The MP-X assembly line is modeled using the Flexsim simulation software. Based on actual research, a production line model of the MP-X is established. Through simulation and the state diagrams analysis the bottleneck of the production assembly line is identified. Aiming at these existing problems, the improving measures are put forward. The decision analysis methods is used to optimize the scheme.This paper provides a feasible method to solve the manufacturing production line planning problems.
Kinematic Analysis of a New 1-Translationand 2-Rotational Parallel Manipulator
Authors: Huang Xiu Qin , Shen Hui Ping , Xin Xiu Mei
Published: November 2012

A novel 1-translation and 2-rotation parallel manipulator is investigated. An analytic solutions corresponding to the forward and inverse position are obtained. The influences by the three input variables on the three output variables are analyzed carefully and the valid working ranges of input and output variables are given. The work of the paper provided a solid foundation for mechanical structural design and real-time controlling of the novel parallel mechanism by structural parameter discussion.
Kinematics Research on PRP Industrial Manipulator with Cylindrical Coordinate
Authors: Tao Ke , Liu Tian Shi
Published: November 2012

Abstract: This paper mainly studies the problem of the movement of PRP cylindrical coordinate industrial manipulator. Based on the description of the manipulator position and gesture, the determination of coordinate of the rectilinear joint and rotary joint and the homogeneous coordinate transformation, the kinematical equation and its inverse solution can be deduced subsequently. It provides the theoretical basis for the following study.
The Balance Problem Solving of the Car Mixed-Model Assembly Line Based on Improved Differential Evolution Algorithm
Authors: Zhang Xin Min , Han Xiao Chao
Published: November 2012

A mathematic model is established for a car mixed-model assembly line. To solve the line balancing problem of car mixed-model assembly, an improved differential evolution algorithm with adaptive operator is proposed. To verify the proposed algorithm, an application example is offered. The solution result shows that the proposed improved differential evolution algorithm can offer better fitness than the standard one. It also shows that this algorithm is feasible and effective.
Study on Control Process of Automatic Mechanical Transmission System for Pure Electric Bus
Authors: Ling Ling , Chen Zhen Sheng , Luo Yuan Yue
Published: November 2012

The vehicle driveline of pure electric bus based on the automatic mechanical transmission (AMT) was introduced and the rationality and necessity of using AMT in electric bus was discussed. The control network structure of vehicle driveline was built in this paper. According to the evaluation standards of automatic gear shifting, that is, the shift time and shift jerk, the optimum control strategy of automatic gear shifting was proposed in terms of the principle and method of adjusting torque and speed of motor. The experimental results indicate that, by the use of the developed gear-shifting control system for pure electric bus with AMT, the coordination control of gear-shifting process between AMT and synchronous motors based on the controller area network (CAN) bus technology can be realized. Consequently, the shifting quality can be improved thus to achieve the predetermined effect.
Wireless Temperature and Humidity Acquisition System Based on MSP430F5438
Authors: Zhang Sheng , Jin Si Wei
Published: November 2012

This article has designed an low power granary temperature and humidity acquisition system, used the latest model MSP430F5438 belonging to TI company as the processor of the lower computer, colleceted temperature and humidity by SHT11, transmitted the collected physical data to the host computer through the SIM300 wireless transmission module and received data stored in the database. The host computer was done by using the C + + builder software, analysed the real-time physical datas and made reasonable warnings.
The Research of Manipulator’s Hydraulic Driven System on Fuzzy Immune PID Control
Authors: Liu Zhong , Liu Deng , Guo Lan Zhong
Published: November 2012

A manipulator's hydraulic driven system is an uncertain and nonlinear complex dynamics. Its research is not much at present. The report designed an electro-hydraulic driven control program that high speed on/off valve is worked as the pilot valve for logical cone valve, making up hydraulic driven system of high-power manipulator. For its control problem such as complex, uncertain and nonlinear dynamic, use a fuzzy immune PID control method that the PID controller parameters are on-line tuned by immune feedback mechanism and fuzzy reasoning respectively. With the harsh conditions of the square wave as an input signal, respectively examine response curve of the system using control strategy of the traditional PID and the fuzzy immune PID. Simulation results show that fuzzy immune PID obtains better control performance and robustness, and is superior to the traditional PID. It is fit for control of hydraulic driven system for manipulator.
Sensors in the Subsystems of Intelligent Assembly Cell
Authors: Sivia Sebenova , Krajcova Katarina , Karol Velisek
Published: November 2012

Intelligent assembly cell conception includes new solution kind of how to create structures of automated and flexible assembly system. Intelligent behavior of the system as the control system will repose on monitoring of important parameters of the system in the real time. The designed automation sensory equipment provides for automatic monitoring of all automated equipment motions in the first case and in the second important level is important to obtain the information about the status, presence and character of the assembled objects or assembly process. The application of the sensory equipment in the intelligent assembly process is designed on the ground of the sensory object properties of the pneumatic actuator model.
The Study of Fuzzy Sensor to Environment Adaptability
Authors: Wang Zhen He
Published: November 2012

With the development of measure technology, traditional sensors cannot meet the needs of all real world applications. Fuzzy sensors play a new role with linguistic description. How to using fuzzy sensor to measure gas collector pressure and adaptability of gas collector pressure state to the environment under valve position are given in this paper. Using linguistic descriptions of the two gas collector pressure state which is outputted by fuzzy sensor, we design the pressure control system and working effectively for cookery techniques.
Evaluating Sensor Placement for System Health Condition Monitoring
Authors: Gu Hong Qiang , Zhao Jian Min
Published: November 2012

In this paper, an evaluation method of sensor placement is proposed for an optimal design of health condition monitoring systems. An evaluation procedure is presented which includes failure mode and effect analysis, testability analysis, choice of evaluation indexes, and implementing evaluation. A hidden semi-Markov model is employed to evaluation the effectiveness of sensor measurement. The proposed method is applied to a case of gear box vibration monitoring, where the model is validated using the experiment data of gear box monitoring.
Design and Testing of In-Plane MEMS High-g Accelerometer
Authors: Shi Yun Bo , Zhao Rui , Liu Jun
Published: November 2012

μAiming at the demand of missile fuse and other weapons systems, a high-g piezoresistive accelerometer with two terminal fixed beam-mass structure which can measure in-plane acceleration was designed. The design and simulation were also performed using Matlab and ANSYS. The simulation results show that the sensitivity of the accelerometer of sensitive-axis is 0.1101μV/g, and the transverse sensitivity of accelerometer is eliminated effectively. The key parameters such as impact over-loading signal and sensitivity of in-plane accelerometer were tested by Master hammer and Hopkinson bar. The test results showed that the sensor can work with the impact acceleration up to 117,395.95 g and the sensitivity of the accelerometer is 0.1028μV/g.
Non-Linear Error Analysis of the Variable Pole Pitch Capacitive Sensor
Authors: Liu Ke Qin , Zhang Mei Feng , Pan Xue Tao
Published: November 2012

The output characteristics of the variable pole pitch capacitive sensor is introduced, the relationship between non-linear error and range is analyzed respectively using theoretical fitting，zero-crossing rotation fitting and best uniform approximation fitting，theoretical expression is derived，and examples of calculations and MATLAB simulation are carried out. It has turned out that the expression based on the best uniform approximation fitting is more reasonable, having higher accuracy, and non-linear error is apparently reduced when the input of relative variation is the same; while in the given nonlinearity conditions, the range was significantly increased. To some extent, this provides theoretical guidance to the design and application of the variable pole pitch capacitive sensors.
Optimal Design of Magneto-Rhological Damper
Authors: Wang Wei , Xia Pin Qi
Published: November 2012

For the complex nonlinear property and a lot of regulatory parameter, it is difficult to design a reasonable magneto-rheological (MR) damper by simply process or experience. To solve this problem a structural optimization has been presented in this article. Three stages have been discussed in the article. By calculate the flux of MR fluid based on the yield stress of MR fluid, selected common design targets such as maximal output damping force, dynamic range and consult volume of damper has been presented in formula respectively with the parameter according to damper structure. By approximate the magnetic circle, the power of excitation also has been presented as an expression of structure parameter. An optimum method named multi-goal attach has been applied to solve the optimum problem. Finally some confirmation and experiment results have been presented. The experiment results indicated that the method presented in the article was effectively.
Performance Analysis of Microchip Electrophoresis with Portable UV Absorbance Detection System
Authors: Tian Li , Wang Wei , Liu Xiao Wei
Published: November 2012

This paper presents a portable miniaturized integration UV-VIS absorbance detection system for the microchip electrophoresis (MCE). The TOCON_nano high sensitive SiC pre-amplified UV Sensor (Sglux GmbH, Ostendstrasse, Berlin, Germany) is used to measure extremely low UV radiation intensities in the nanowatt scale. This detection system volume is 280 ×200×150 mm3, the weight is less than 2Kg. The PMMA was used as the MCE substrate materials. And the electrophoresis microchannels are fabricated with the CNC milling, have the cross section area of 150μm ×150μm. With this detection system, the detection limit for the Cl- electrophoresis can reach 10-10mol at the indirect UV-VIS detection mode. Two inoSuperscript textrganic ions Cl-and SO42-could reach the baseline separation in 3 min.
Research on Satellite Multi-Sensor Attitude Determination System
Authors: Zhao Lin , Su Zhong Hua , Hao Yong
Published: November 2012

An attitude determination system has been designed for the geocentric pointing triaxial stabilized satellites which employ a continuously running inertial rate sensor in conjunction with sun sensor and earth sensor. Earth/sun sensor data are processed to generate corrections to satellite attitude, gyro constant drift and earth sensor drift bias estimates. An extended Kalman filter based on the attitude determination system is derived in this paper for the satellite using two earth sensors, a two-axis digit sun sensor as attitude sensors and a three-axis gyro for the angular velocity. A simulation model is developed to estimate the attitude determination performance. Simulation results show that precision attitude determination is achieved using the selected attitude hardware and algorithms.
A Printed CPW-Fed Monopole Antenna with Circularly Polarized Characteristic
Authors: Li Ji , Fang Zong Kui , Zhang Xiao Bo
Published: November 2012

This letter presents a circularly polarized antenna with a printed monopole structure fed by a coplanar waveguide (CPW) line. Circular polarization (CP) radiation of the proposed design is achieved by introducing an inverted L-shaped strip connected to the square radiation loop and an L-shaped slit embedded in the ground plane. A parametric study has been carried out to investigate the effects caused by different widths and lengths of both the strip and the slit. Both simulated and measured results are provided to validate the CP performance of the monopole antenna.
A Precoding Scheme Based Game Theory for Cooperative MIMO System
Authors: Hao Dong Lai , Zhang Hong , Chen Ying Mei
Published: November 2012

This paper considers a tradeoff between maximizing the user’s signal interference noise ratio and minimizing interference leakage in preprocessing for multi-cell MIMO system. A sub-optimal precodingalgorithm based on game theory is proposed to deal with it. A game-based algorithm mathematics model is constructed and interference pricing function is also introduced in the solution to the precoding vector by Lagrange equation. Implement step of the proposed algorithm is also summarized in the paper. Finally in simulation the proposed algorithm is compared with conventional algorithms and convergence of utility function is also discussed. The simulation results show that the proposed algorithm provide improvement over existing schemes.
The Realization of Multiple Degree of Freedom Prosthetic Method of Random Target Location in Embeded System
Authors: Fan Bing Hui , Ji Peng , Li Jian Gong
Published: November 2012

In order to make prosthetic work in unstructured environments in real time to solve the inverse kinematics problem, the coordinates of the location of the end of the workspace of the manipulator rod needed to know. The spatial orientation value of random object relative to prosthesis basic coordinates be calculated in real time is realized in the embedded system by means of two three-dimensional attitude sensors and one laser ranging sensor.This method can provide the necessary raw information for the multiple degree of freedom prosthesis which works in an unstructured environment to complete the operational tasks assigned.
Harmonic Detection Instrument Based on Embedded System
Authors: Liu Xing Qiao , Fan Ying Chuan
Published: November 2012

With large scale application of the power electronic devices and frequency conversion devices, the harmonic pollution in the grid becomes more and more serious. It has brought serious harm to the electrical equipment and the safe and stable operation of the power system. In view of this, this paper built a harmonic detection system based on Ethernet. MCU C8051F040 is used as the field detection instrument, and ARM9 processor is used to build the Ethernet gateway. Field data can be sent to the gateway from MCU by RS485 bus. By writing the related web server code and CGI code, the remote monitoring data can be achieved through the IE browser.
Design of Vehicle Semi-Active Suspension System Control Unit
Authors: Zhang Hong Kun , Li Wen Jun
Published: November 2012

This paper researches on embedded system design based on MC9s12Dp256 microcontroller for vehicle semi-active suspension. The hardware design of suspension control unit (SCU) is introduced. The integrated control strategy which integrates Skyhook and MiniMax strategies is proposed. The hardware-in-the-loop simulation (HILS) test on a two-degree-of-freedom quarter car semi-active suspension system model is carried out. The functions of SUC are verified and the performance of passive suspension and semi-active suspension is compared. The simulation results indicate that the performance of SCU achieves design requirement. In comparison with passive system, the control effect of integrated control strategy can be improved in ride comfort and drive safety.
Influence of Machining Process on Gap-Width Detection in Pulse ECM
Authors: Harada Shinji , Natsu Wataru
Published: November 2012

In this paper, the gap-width in pulse ECM was detected by measuring the peak current responsive to the applied pulse voltage, and the influences of machining conditions on the detection sensitivity were investigated. It was found from experimental results that the sensitivity is increased by using the lower concentration electrolyte and electrolyte height. In addition, the machining experiment also showed that the sensitivity can be kept constant by removing by-products timely from the gap area.
A Satisfaction-Based Dynamic Bandwidth Allocation Algorithm for Heterogeneous Wireless Network
Authors: Song Qing Yang , Yue Ming Hong , Ning Zhao Long
Published: November 2012

Due to the limited bandwidth resources, traditional networks can not completely guarantee the Quality of Service (QoS) among users with new class, thus how to allocate network resource effectively becomes a very important problem. In this paper, we propose an algorithm for an integrated cellular/WLAN network, namely Satisfaction-based Dynamic Bandwidth Allocation (SDBA) algorithm. The main objective is to guarantee users’ satisfaction through allocating network resource dynamically according to proportional fairness based degradation and one-by-one search based degradation. Numerical results show that our proposed algorithm not only reduces new call blocking probability (NCBP) and handoff call dropping probability (HCDP), but also maintain fairness among users.