bluuebunny/crossref_metadata_2025 huggingface dataset:
Tolerance Analysis for Compliant Assemblies with Thickness Deviation
Authors: Xing Yan Feng , Wang Yan Song , Zhao Xiao Yu
Published: October 2010

Dimensional tolerance is an important factor for the geometry quality of products. The stiffness matrices of sheet metal components are usually not variational during the process of tolerance analysis; however, material properties of the compliant parts may change in volume production. The variation of the part thickness changes the part stiffness matrix so that the sensitivity matrix is different from that of the assembly with nominal thickness. The paper proposes an improved sensitivity matrix between the incoming part variation and the assembly variation for the assembly with thickness variation. Moreover, the orthogonal design is used to judge the importance of part and thickness variation for the assembly deviation. The proposed method is illustrated through a case study and the results show that the thickness variation influences the relationship between the part variation and the assembly variation. In addition, part variation plays a more important role to assembly variation than the thickness deviation does according to the orthogonal design.
Study on a Development Platform of Virtual Steam Jet Pump Based on Virtual Prototyping Technology
Authors: Ren Da Bin , Wang Xian Kun , Lei Jiao , Xiao Jiu Mei
Published: October 2010

Based on virtual prototyping technology (VPT) and software engineering principles, and combining with the characteristics of steam jet pump, a virtual prototyping development platform of steam jet pump, consisting of five functional models, including general scheme design, virtual physical prototype design, virtual performance prototype design, assemble process analysis and VR model design and evaluation, was present in this paper. The architecture and functional model of the virtual steam jet pump prototyping development platform (VSJPDP) were proposed in the article. The ideas corresponding to several key technological problems for implementing the VSJPDP were also described. At last, the platform’s feasibility, effectiveness and advancement were verified by the development process of the virtual single-stage steam jet pump.
Simulation Modeling Based on the Object-Oriented for Camshaft Production Line
Authors: Shu Zhan Hui , Wang Hong Jun , Han Qiu Shi , Dong Ting
Published: October 2010

With the production system of modern manufactures complexity increasing, it is very difficult to establish a practical model to satisfy the current trend by means of traditional methods and theories of modeling. According to IDEF0 modeling method, this paper presents a functional model of the production line object model framework. Based on this, an object-oriented abstraction mechanism is considered to solve the camshaft production line complexity practical situation and an object-oriented Petri nets (OPNs) modeling is proposed. Simulation models are established by using Witness 2008 simulation software based on camshaft production line to analyze the layout and bottleneck of production line, to check the design programs, and to optimize configuration and layout of the production line furthermore. The manufacturing capacity of the line is also discussed in this paper. Finally the corresponding solutions to avoid the existing bottleneck of the line are also discussed in detail.
Simulation and Optimization of the Camshaft Production Line Based on Petri Net
Authors: Wang Hong Jun , Dong Ting , Zhang Jing , Wang Hai Yan
Published: October 2010

With the development of scientific and technology, the automotive industries competition is becoming more and tougher. The camshaft production system is an important part of the engine manufacturing. The production line productivity and characteristic are affected by many practical factors of the workshop. It’s a complex discrete manufacturing system somehow. In this paper, the production line model is presented based on Petri net. Then the mapping relationship is established between the Petri net model and the eM-Plant discrete system model. The discrete simulation model of production line is constructed by using eM-plant software. Based on the simulation, the reasonable simulation experimental are carried out with the determined simulation boundary and objectives under the different input conditions such as orders, the working stations' processing time, the working stations’ fault distribution, and the production line layout. The simulation experimental results are discussed on condition that the shifts, equipment operation condition, production line capacity and WIP in detail. These results could provide the theory basis for decision-making of the production plan of the automotive industries.
A Study on Incremental Forming of Vertical Wall Square Box with Small Radius Corner
Authors: Zhou Liu Ru
Published: October 2010

According to sine law, a vertical wall square box can’t be formed by NC incremental sheet metal forming process in a single process, rather, it must be formed in multi processes. A vertical wall square box can be considered to consist of corners and straight sides. Straight sides and corners affect each other and the effect is different in various square boxes. The effect depends on the ratio r/B of the corner radius r and straight side width B. The smaller r/B, the larger the effect of straight side on corner is. In this case, the deformation in the straight sides isn’t even, and the metal of the corner is compressed and gradually piled up. With the increase of r/B, the deformation becomes more uniform. The tool path with gradually reduced corner radius is adopted to overcome this question. A vertical wall square box with small corner radius is successfully formed.
The Effect of Forming Half-Apex Angle on Incremental Sheet Metal Forming
Authors: Zhou Liu Ru
Published: October 2010

The incremental sheet metal forming technology is a flexible forming technology without dedicated forming dies. The locus of the forming tool can be adjusted by correcting the numerical model of the product. The effect of forming half-apex angle on forming process with all kind of sheet material, sheet thickness and ironing ratio is researched. The limit half-apex angle is different for all kind of sheet material and thickness. The limit half-apex angle is smaller for the larger thickness of sheet metal. It will succeed in square conical box incremental forming in a single tool-path if the forming is carried out with an angle which is larger than the forming limit half-apex angle θ. The ironing ratio ψt is decided by the forming half-apex angle θ. The ironing ratio ψt varies with θ. The ironing ratio ψt is smaller when is larger.
Research on the Security of BPEL Based Manufacturing Service Workflow Management System
Authors: Wang Wei , Chen Liang
Published: October 2010

The security of BPEL (Business Process Execution Language) based manufacturing service workflow management system is researched in this paper, in order to achieve the efficient and secure integration and sharing of dispersed and heterogeneous design/manufacturing resources, and to realize the reuse of the complex distributed Design/Manufacturing process models. By integrating the secure BPEL engine, proxy credential server and authentication trust level, the security framework of the BPEL based manufacturing service workflow management system is built up, and the security mechanism of integrating BPEL and WSRF (Web Service Resource Framework) is analyzed. In addition, the system implementation technologies are analyzed and a distributed injection mould Design/Manufacturing application scenario is described. The research results provide the basis for developing a secure BPEL based distributed Design/Manufacturing prototype system.
Case Retrieval for Product Configuration Based on NRS and KNN
Authors: Xi Tao , Li Jian Jun , Wang Li Jing , Shi Ming Hua
Published: October 2010

The accuracy and efficiency of case retrieval decline with individuality and diversity of customer needs in current product configuration design. To cope with this problem, this paper proposes the method of case retrieval based on NRS and KNN. Firstly, setting neighbor value can effectively avoid errors generated by discretization of continuous attributes in classical RS. Secondly, NRS is used for redundant reduction and weight allocation of attributes, and to calculate distance of each sample points by weighted distance. Thirdly, K similar cases are selected according to Euclidean distance with weight, then the case that meet customer needs best is acquired. Lastly, product configuration of coal mining machine is used to illustrate that accuracy and efficiency of the method are superior to the existing methods of case retrieval.
Preparation of Titanium Dioxide Paste for Dye Sensitized Solar Cells (DSSCs)
Authors: Abdullah Huda , Razali Mohd Zikri , Yarmo Mohd Ambar
Published: October 2010

A dye-sensitized solar cell based on TiO2 electrode was prepared by mixing the TiO2 nanopowder and TiCl4 aqueous solution, in which the mixture was used as the paste to deposit onto the ﬂuorine doped tin oxide (FTO) coated glass substrates by screen-printing method. DSSC were created after a rinse of TiO2 electrode with acetonitrile to remove excess dye molecules. The synthesis and characterization of the TiO2 paste was figured out by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The TiO2 layer is homogeneous and composed of anatase and rutile particles. The photocurrent-voltage of the cell was fabricated and the comparison dye was made by using the eosin Y and N719. The sample that use N719 dye showed the better result which is generating a short-circuit photocurrent density of 0.0299 mA/cm2, an open-circuit voltage of 0.713 V, and the energy conversion efficiency was 0.08926 %.
Branch and Bound Method with Heuristic Algorithm for a Special Flexible Flow Shop Scheduling Problem
Authors: Li Zhan Tao , Hong Fu , Chen Qing Xin , Mao Ning
Published: October 2010

This paper deals with an optimal method for solving a 2-stage flexible flow shop scheduling problem with group constraint, batch released dates. This problem is known to be NP-hard. In this paper, first of all, we construct a mathematical model for the problem. Then, we develop a branch and bound method with heuristic algorithm for the optimal solution of the problem. During the initialization, we use a heuristic algorithm H’ as the initial solution. We propose two branching algorithms in the branching procedure and two algorithms for the lower bound. We also propose a set of instances for this type of problem. The results are shown that our branch and bound method is effective for small and medium-sized problem but large-sized problem.
Conversion of Information Flow in Digital Manufacturing for Clothing Industry
Authors: Qiu Jian Xin , Xu Yan Qiu , Zhang Man
Published: October 2010

Use of digitization clothing technology, the customer demand information flow of mass customization for clothing industry was analyzed. The mathematical mapping ways which can be identified by system from these demands were proposed. Combination with three specific process of customization, design, production of mass customization for clothing industry, the information conversion technologies were studied, respectively, from customer demand to orders, from orders to design program ,and from design program to clothing . The customization system configuration in the clothing industry was designed on the basis of Web. The information conversion and systems integration were achieved by PDM.
Product Module Partition Method for Product Lifecycle Based on LSSVC
Authors: Wang Li Jing , Xi Tao , Zhou Yin Feng , Tan Run Hua
Published: October 2010

Most of present product module partition methods are based on product function partition and use fuzzy clustering algorithm, but these methods are not only complex in implementation but also difficult to meet the requirements of product development oriented to product lifecycle. By analyzing interactive effects of product components in product lifecycle, a new method for product module partition is put forward. Firstly, LSSVC which has fast calculation speed and high accuracy is used to illustrate the generating process of modules, so several module partition schemes are obtained. Secondly, module partition schemes which are got by LSSVC and other methods of module partition are evaluated to get the most reasonable module partition scheme. Finally, widely-used speed reducer as an example is provided to illustrate the validity and rationality of the proposed approach.
Study on Ontology-Based Knowledge Integration
Authors: Hao Jia , Yan Yan , Wang Guo Xin , Lin Jian Jun
Published: October 2010

This paper firstly discussed the definition of knowledge integration in the field of product development and proposed the multidimensional knowledge integration model which could be the guidance during the implementation of knowledge integration. Subsequently the framework of knowledge integration is presented, three layer (the enterprise distributes resources layer, enterprise managed knowledge layer and product development process layer) in the framework are explanted respectively. The ontology is introduced to provide the semantic fundament for the framework. The structure of integrative ontology is studied and constructed with OWL(Ontology Web Language). The ontology plays an important role in knowledge organization and knowledge service and it’s the core part of the whole framework. At last a prototype system based on the previous techniques is developed and basically fulfills knowledge integration in product development process.
A Method Study on Assembly of Single-Wall Carbon Nanotube Field Effect Transistor Using Dielectrophoresis
Authors: Xu Ke , Wu Cheng Dong , Tian Xiao Jun , Zhang Ying , Dong Zai Li
Published: October 2010

Single-wall carbon nanotubes are candidates for a number of building blocks in nanoscale electronics. With respect to the assembly of carbon nanotube field effect transistor, the dielectrophoresis technology is adopted, which assembles SWCNTs between the micro-electrodes, SWCNTs are affected by the electrophoretic force which is carried out by the related theoretical analysis in a nonuniform electric field. The driving electric field of dielectrophoresis is simulated by the comsol software. According to the simulation results, a number of the experiments are done. It turns out that the required experimental parameters of the efficient assembly of SWCNT were obtained. AFM scanning and electrical properties of SWCNTs show that the method can achieve the effective assembly of carbon nanotube field effect transistor. SWCNTs are driven in the microelectrode gap, having a good arrangement of uniform orientation and assembly results, and proportional to the arrangement density along the electrode width direction and the duration of DEP. Meanwhile, it also provides an effective method of assembly and manufacture for other one-dimensional nanomaterials assembly of nanoelectronic devices.
Interface between Nanophotonics and Biotechnology: How the Near-Field Can Boost Proteomics Based on LSPR Nano Sensor
Authors: Huang Xi Xi , Cao Zhong , Liu Yong Le , Dai Yi Min , Zeng Ju Lan , Yang Rong Hua , Takei Hiroyuki
Published: October 2010

An novel optical nano biosensor based on gold capped nano-particles for detecting binding events between ligands and receptor molecules as well as interactions among proteins without use of labels has been presented in this paper. The optical properties of nano-sized gold particles exhibiting pronounced adsorption in the visible region which called as localized surface plasmon resonance (LSPR) have been exploited, whose peak wavelengths depended exquisitely on the refractive index of the surrounding. In comparison with surface plasmon resonance (SPR) technology, the optical nano biosensor possessed high sensitivity, surprisingly low “bulk effect”, ease of preparation, and low-cost polymer based fabrication, which opened a promising bioanalytical application in practice.
Nanoimprint Lithography: A Promising Candidate for Next-Generation Lithography
Authors: Fan Xi Qiu
Published: October 2010

Due to its inherent simplicity and low cost, the popularity of nanoimprint lithography is rising, and is positioned to succeed EUV as the most popular choice for next-generation lithography. This paper presents a homemade nanoimprint lithography prototype tool with a high precision alignment system, which adopts both macro and micro actuators to achieve coarse and fine alignment. Linear motors with 300 mm travel range and 0.1 µm step resolution, and piezoelectric translators with 50 µm travel range and 0.1 nm step resolution are used as macro and micro actuators, respectively. Imprint of 80nm width gratings with a 250 nm pitch is taken as an example to depict the process of NIL. High resolution and fine fidelity of the imprinted results demonstrate NIL’s promising candidate for next-generation lithography, and potential applications in manufacturing integrated circuits, optical, chemical, and biological nanostructures or micro-devices.
Realization of Mass Production of Microlens Array by Hot Embossing on Silicon Substrate
Authors: Fan Xi Qiu
Published: October 2010

Tradition lithographic techniques to produce micrlens array are complicated and time consuming. Due to the capability to replicate nanostructures repeatedly in a large area with high resolution and uniformity, hot embossing has been recognized as one of the promising approaches to fabricate microlens array with high throughput and low cost. This paper introduces processes to realize fabricating microlens array in mass production by direct hot embossing on silicon substrate. The mold is fabricated by multi-photolithography and etching steps and polymethyl methacrylate (PMMA) is chosen as the resist. Processes include coating, heating, pressing, etc. Fidelity and optical performance of the embossed microlens array were measured. High fidelity and fine optical performance of the embossed microlens array demonstrate the possibility of hot embossing to fabricate microlens array in mass production.
The Design and Testing of Mesopiezoresistive Effect Electromagnetic Driven Micromachined Gyroscope
Authors: Wang Rui Rong , Du Kang , Shi Yun Bo , Liu Jun
Published: October 2010

Resonant tunneling diode (RTD) is a bipolar negative resistance device with the features of high speed, high frequency, low voltage and power, has been proved to have mesopiezoresistive effect, and the current-voltage characteristics of RTD is a function of stress. In the paper, the mesopiezoresistive effect of resonant tunneling diodes and Coriollis effect are both used in the research of gyroscope, so a novel gyroscope structure is proposed. The feasible fabrication process is designed according to present process technology, and the gyroscope is fabricated by GaAs surface micromachining processes and bulk micromachining technology. By the driven experiment it is verify that the gyroscope can be successfully driven. And the range of fabricated gyroscope natural frequency is also obtained, which is larger than 4KHz.
Optimization of Heat Treatment Parameters with the Taguchi Method for the A7050 Aluminum Alloy
Authors: Chang Chin Chun , Yang Ji Gang , Qi Ling , Chou Chang Pin
Published: October 2010

This paper describes a heat treatment process using dual aging for the A7050 aluminum alloy with the Taguchi method to optimize process parameters. The current study considers micro hardness and electrical conductivity as optimization criteria. Pre-aging temperature, pre-aging time, re-aging temperature, and re-aging time are important factors influencing these optimization criteria. Experiment results show that re-aging temperature is the most significant parameter for electrical conductivity, and both aging times are important influence factors for micro hardness performance. The optimal hardness for A7050 heat treatment conditions are pre-ageing temperature 120 °C, pre-ageing time 12hrs., re-aging temperature140 °C, and re-aging time 8 hrs., respectively. The best electrical conductivity parameters are pre-ageing temperature 120 °C, pre-ageing time 4 hrs., re-aging temperature180 °C, and re-aging time 24 hrs., respectively. The current study obtained contributing individual parameters for hardness, and electrical conductivity in dual aging of heat treatment.
Research on Multi-Domain Unified Modeling and Simulation of a Micro Electro-Thermal Actuator
Authors: Liu Yang , Bao Fu Ting , Hu Hai Feng
Published: October 2010

Referring to the natures of nonlinear dynamics and coupled energy domains presented by Micro-Electro-Mechanical Systems (MEMS), a multi energy domain unified simulation language (modelica) based coupled modeling and simulation methodology is put forward. Then by choosing a micro electro-thermal actuator as the example, corresponding multi energy domain unified modeling and simulation processes of such a coupled micro device, which covers mechanical energy domain, electric energy domain and thermal energy domain, show the efficiency and convenience of this advanced modeling method. At last, through simulation result comparison with device level FEA simulation result and experimental result, the maximum relative error between numerical calculation result and experimental result is less than 4.2%. It proves the accuracy of this system level simulation method.
A MEMS-Based PDMS Micropump Utilizing Electromagnetic Actuation and Planar In-Contact Check Valves
Authors: Ni Jun Hui , Li Bei Zhi , Yang Jian Guo
Published: October 2010

This paper presents a novel low-cost poly(dimethylsiloxane) (PDMS) micropump with simple planar design featuring use of compliant in-contact check valves for reliable operation and easy system integration. The micropump mainly consists of two PDMS functional layers: one through-opening layer incorporating the planar in-contact check valves, pump chamber and flow channels, and the other thin membrane layer covering the chamber with a miniature permanent magnet on top for actuation. A special clamping molding technique was used to fabricate the through-opening functional layer, with which the flap-stopper based planar check valve was manipulated to contact each other enabling the minimized leakage flow. The micropump was then characterized by investigating the dependence of pumping flow rate on the driving frequency and backpressure. Testing results exhibit that the micropump is able to produce a flow rate at least of 3.0 μL/min, and work reliably against a backpressure of 1900 Pa, demonstrating the feasibility of this micropump for potential use in various lab-on-a-chip systems.
Analysis of a Curved Beam MEMS Piezoelectric Vibration Energy Harvester
Authors: Zhou Yong , Dong Yong , Li Shi
Published: October 2010

An analytical model is derived for obtaining the dynamic performance of a thin curved composite piezoelectric beam with variable curvatures for the MEMS piezoelectric vibration energy harvester. The plane curved beam theory with rectangular section is employed to explore the bending and twisting coupling vibration characteristics. In order to satisfy the most available environmental frequencies, which are on the order of 1000Hz, the parameters of the spiraled composite beam bonded with piezoelectric on the surfaces are investigated to provide a method of how to design low resonance beams while keeping the compacting structural assembly. The results indicate the adoption of ANSYS® software to carry out the MEMS piezoelectric vibration energy harvester’s numerical simulation can improve the accuracy of the harvester designing and manufacturing consumedly. And the simulation data also provide a theory analysis foundation for the engineering, design and application of harvester.
Design of MEMS High g Accelerometer and Study on the Overload Ability
Authors: Shi Yun Bo , Li Ping , Liu Jun
Published: October 2010

Aiming to the application requirements of high overload environment, a MEMS acceleration sensor with high overload ability was designed in this paper. It adopted beam - island structure, which dispersed the stress by the chamfer that was on the root and the end of the structure beam when the acceleration effect on the structure. ANSYS simulation results showed that the structure can improve the ability of anti-overload of the acceleration sensor significantly, and the first- order natural frequency can up to 550 kHz. The designed sensor was processed by the standard processing technology, and the ability of anti-overload of the acceleration sensor was tested by Hopkinson bar. The results of the test showed that the signal and structure of the sensor is normal when the designed acceleration sensor was effected on the 230,000 g. The sensitivity of the senor is 0.88uV/g. In such situation, the designed sensor can meet application requirements of high overload environment effectively.
Position Predictive Measurement Method for Time Grating CNC Rotary Table
Authors: Liu Xiao Kang , Yang Ji Sen , Gao Zhong Hua , Peng Dong Lin
Published: October 2010

Time grating sensor transforms space domain information to time domain and measures spatial displacement with time. To develop high precision time grating CNC rotary table and reduce the dynamic position feedback error of the table, circular position predictive measurement method is proposed for transforming time domain information back to the space domain based on time-space transformation technology. Predicted values are obtained by modeling the measured values with time series theory, and the last prediction error is corrected in real time using the current measured values. Modeling method and parameter estimation algorithm are presented. To confirm the validity of the position prediction method, an experimental system is designed. The dynamic prediction error of the rotary table circular position is 2, and precise predicting is achieved.
Study on the Engine Start/Stop Control Strategy of Hybrid Vehicles
Authors: Zhao Li Jun , He Rui , Li Guo Jun
Published: October 2010

The hybrid vehicle is currently one of the research focuses of automotive industry. The mode of ‘engine start/stop strategy’ has become a crucial part in (hybrid) vehicle control strategy. In this paper, both home and abroad researches of the ‘engine start/stop control strategy’ were summed up. From automotive engineering perspective, several aspects were in-depth analyzed and discussed, including the engine providing control energy or power resources, substitutability of energy and the negative problems brought by starting/stopping the engine. According to economy and overall loss, the objective function of optimization of the strategy was proposed. For solving the related engineering application problems caused by using the engine start/stop strategy on hybrid vehicles, the appropriate additional solutions were given from three aspects such as adding power source, controlling and switching clutch program of power source, and coupling and connection of the engine and auxiliary energy, providing an important reference for related study.
Design and Analysis of Automatic Cutting Robot for Vertical-Pull Glass Pipe
Authors: Sui Xiu Hua , Miao De Jun , Feng Zheng Mao
Published: October 2010

By study on the current domestic cutting technics of vertical-pull glass pipe, in this paper a new and practical design of automatic cutting robot is peoposed. Its motion process is introduced on the basis of performance requirement, and then the overall structure of automatic cutting robot for vertical-pull glass pipe is designed, especially the electro-hydraulic proportional control systems for frame rotation and fuselage lifting. Meanwhile the stability and respond speed of hydraulic systems is well analyzed with matlab software. The results of open-loop bode diagram of the frame rotation system and unit step response diagram of fuselage lifting system indicate that the automatic cutting robot has excellent system stability and respond speed. It can content the requirement of position accuracy, reduce the labor intensity with high productivity and liberate the workers from wicked environment.
A System with Dynamic Reactive Power Compensating for High Power Windings Rotor Induction Motor
Authors: Xiao Hui Rong , Min Chen , Zhang Jun , Xiong Yong Jun
Published: October 2010

This paper presents how a capacitive voltage source is connected in series to the rotor of induction motor to improve power factor, reduce stator current, and improve efficiency and ability of overloading. The principle of the reactive power compensating device for windings rotor induction motor is described and mathematical model in dq0 reference frame is set up. A single phase to three phases AC-AC cycloconverter is adopted in order to produce capacitive voltage, which make the circuit simple and capacity of transformer much decremented. Using an 89S52 sing-chip microcomputer as the control kernel and MAX197 as A/D, the system is capable of automatic adjusting the function of power factor compensation as the change of the motor load. The system was tested on a JR138-8 motor. The result shows that the power factor is over 0.96 and the current of the stator reduces over 15%.
Research on Drive Control Method of Scanning Mechanism of Radar Scatterometer Antenna
Authors: Zhai Shao Xiong
Published: October 2010

A set of drive control system has been developed for the scanning drive system of radar scatterometer antenna, according to the requirements of its scanning motion for speed stability with three-phase AC permanent-magnet synchronous motor(PMSM) driven by sine wave current as the execute component. The system can achieve the aim of controlling motion trace. The system composition, matching design of characteristic parameters such as speed and torque as well as control realization method, are described in this paper and the testing of main system performances such as speed stability is also briefly introduced. It is shown from the simulation and test that the designed system can complete the control of motion track with speed ability of up to 0.5% and can satisfy the given index requirements.
Fuzzy Control of Non-Cable Type Autonomous Dredging Robot for Municipal Drainage Pipe
Authors: Wang Feng
Published: October 2010

In view of the problems existing in the cleaning of municipal drainage pipes with diameter of 300-600 mm, a new type of robot was developed to replace the manual to clean the sewers automatically. It was powered by the self-contained storage battery. To make the robot have a degree of operating autonomy, four photoelectrical encoders were used to detect the stepper motor overload, the wheel slippage and the robot’s blockage in real time; an inclinometer was used to detect the robot’s operating posture; an ultrasonic sensor to the thickness of the calcified layer deposited on the pipe wall. Regular fuzzy control was introduced in the motor overload ajustment. To improve the control performance and simplify the control complexity, a hierarchical fuzzy control algorithm was presented in the robot’s posture-load regulation. The engineering result verifies the effectiveness of the fuzzy controllers and the enhanced autonomous operating capability of the robot.
Application Research of FlexRay Communication Protocol in Engineering Vehicle
Authors: Bian Yong Ming , Jiang Jia , Xu Xin Ming , Zhu Li Jing , Zhao Fang Wei , Jin Ben
Published: October 2010

The structure and control system of full electric driven loader after electrified modification are introduced firstly. The main technical parameters of the modified loader are described. The feasibility of the application and major programme of the FlexRay communication protocol in full electric driven loader are discussed. Finally, the corresponding designing and controlling schemes are given to the main controller and minor controller, the design plan for the control system of engineering vehicle is proposed, and the performance of the engineering vehicle using FlexRay is analyzed, which provide solid theory and experiment support for the FlexRay application in engineering vehicle.
A New Energy Recycle Test Bench for Hydraulic Winches
Authors: Li Meng Ru , Chen Zhi Xin , Xu Bao Fu
Published: October 2010

By analyzing two old forms of hydraulic winch test benches (Traditional hydraulic winch test bench and throttling hydraulic winch test bench), the new hydraulic winch test bench applies a new energy recycle technology and avoids enormous energy consumption. For the new test bench, this paper gives the definition of energy saving rate, which is generally used to measure the effect on saving system energy. It also analyzes the working principles of the new test bench’s obverse processes. The displacement of the loading pump should adapt to the change of the diameter ratio of the main drum and the auxiliary drum, so we use one loading pump and limit its displacement to realize energy recycle. Furthermore, the new test bench’s experiment is carried out to evaluate the efficiency of this test bench’s energy saving rate. The average energy saving rate is 57.88% from test, and this test bench realizes energy recycle.
Study Control System Based on Creep Test in High Density Baler
Authors: Lee Wei , Wang Chun Guang
Published: October 2010

Hydraulic transmission system controls hydraulic cylinder forward and backward movement freely, in order to achieve high density hydraulic baler work circulation. Creep test required hydraulic system to output constant stress, and study creep tests can not be completed when used succeeding the electrical contact style in the past time. The system used programmable logic controller (PLC) to instead of succeeding the electrical contact style and realized freely forward and backward movement of hydraulic cylinder, electro-hydraulic proportional relief valve can adjust hydraulic system and make it stepless pressure regulation and then degree of automation and reliability in hydraulic control system to be improved. This paper introduces aspects: including the selection, hardware configuration and program of PLC, meanwhile, giving specific realization method. Through the control system to study creep test in hydraulic baler, adopting the National Instrument (NI) company's multi-channel data acquisition card, which type is USB-6251,applying Labview8.2 to write data acquisition program on my own, the versatility and flexibility of system was verified, which was able to complete creep test successfully.
Research on Static Stiffness Characteristics of Parallel Machine Tool
Authors: Jin Xin , Yang Bin Jiu
Published: October 2010

The static stiffness characteristic of parallel machine tool is an important factor and reference for machine design and optimization. The static stiffness characteristic of 3-TPT parallel machine tool is researched in this paper. The structural analytical model of machine tool is built by ANSYS software, which has two different work positions and three kinds of different workloads. The details of analytical process and method are provided, and the deformation conditions and the laws of stiffness variation are got. The main factors of static stiffness are obtained, so it provides an important reference for modifying structure of machine tool and relative research.
Development of Electropulsing Treatment Device Based on Capacitor Energy Storage and Discharge
Authors: Zheng Jian Yi , He Wen , Shen Run Jie
Published: October 2010

A practical electropulsing treatment device has been developed based on capacitor energy storage and discharge technology. The device was controlled by a pair of charge and discharge switches which close in turn to produce high density electropulsing. The electropulsing treatment experiment was carried out by capacitor discharging while an exponential damping oscillatory waveform was produced. A group of 45 steel quenched specimens were connected into the discharge circuit with copper electrodes through a vacuum contactor switch. At last, a typical waveform of electropulsing was detected by a DS5062MA digital storage oscilloscope. This waveform demonstrates that the first peak of electropulsing has reached 23 kA, and the discharging process has concluded within 0.6 ms. Results indicate that the energy density of electropulsing treatment is very concentrated because of the waveform of high peak value and short duration. The device is now being used for the stress relief processing of metals.
A New Kind of Pumping Rod Appliance
Authors: Luo Jing , Sun Chun Geng , Wu Song Tao , Zhu Geng Yin , Yuan Yu Bi
Published: October 2010

In the process of lead-electrolysis, when we take off the cathode lead plate from electrolyte, we should take out the cathode collector bar. Next cathode lead plate will be melted and make into ingot. The cathode collector bar can be used next time. The design is a new kind of appliance of taking out the cathode collector bar. The appliance, which limits the cathode plate horizontally, uses the way of single taking out. It is proved that this way is steady and efficient.
ERP Implementation Challenges in Small and Medium Enterprise: A Framework and Case Study
Authors: Sahran Shahnorbanun , Goni Feybi Ariani , Mukhtar Muriati
Published: October 2010

The Malaysian small to medium enterprises (SMEs) market has big influences in the business world which is becoming more competitive. Therefore, Enterprise Resource Planning (ERP) as a functional unit integrated system is needed to streamline the business processes to achieve greater work efficiency. However, an in depth understanding about ERP system is needed to ensure the successful system implementation. This paper seeks to explore the challenges of ERP system implementation in order to deepen the knowledge on ERP system implementation in SMEs. The research method is based on a single-case design within Malaysian SME to obtain a process model of ERP system implementation adoption by SMEs. The conceptual framework for ERP system implementation, which was validated by a number of SMEs in Malaysia, is proposed in order to attempt the minimize ERP project failure in SMEs.
Benchmarking Implementation and Cluster Approach in Manufacturing SMEs: A Review
Authors: Zeinalnzehad Masoomeh , Sahran Shahnorbanun , Mukhtar Muriati
Published: October 2010

While a country expands its industrial base in meeting the challenges of the new millennium, the importance of the small and medium industries will become more significant. This study aims to review the implementation of benchmarking methodology in small and medium enterprises for highlighting their needs and challenges. The findings of the review reveal that although benchmarking allows the SMEs to improve their operational and financial performance, few entrepreneurs turn to benchmarking, due to lack of time and resources. Moreover, it was found that the use of cluster approach among SMEs could be a useful tool for meeting their challenges related to globalization. The paper indicates that innovation implementation principles in large organizations are not directly transferable to SMEs and a specific framework, which suits the SMEs structures, processes, resources and culture is needed.
A Component Based Reconfigurable Scheduling System for Semiconductor Manufacturing
Authors: Wu Ying , Qiao Fei , Li Li , Ye Kai
Published: October 2010

For coping with the challenge of the highly dynamic and stochastic semiconductor manufacturing environment, a component based reconfigurable scheduling (CBRS) system is presented. CBRS system has two types of components: simple components and compounded components which have encapsulated the common scheduling methods such as rescheduling methods, real-time dispatching rules and optimization algorithms. These components are stationed on different scheduling layers: medium-term plan layer, optimization layer and real-time dispatching layer. And some of these components can be used together to create some more practical and feasible scheduling solutions to handle different shop floor operational scenarios. This paper has described the system structure and the function of different types of components. And finally with instance, the feasibility of component based scheduling system is indicated.
Business Process Integration of Mold Making Enterprise Based on BPM
Authors: Huang Ming Yue , Hu Sha , Li Jian Jun
Published: October 2010

The informationization of mold making enterprises have always been the industrial focus, however, few of information integration solutions can solve the problems efficiently. Promoted by demands of industrial developments and the newest information technology, enterprises integration shifted rapidly from information integration to process integration for the preeminent performance exhibiting in the real production process. The paper conducts many studies on the typical four business processes of mold industry, then proposes the process integration architecture of mold making enterprises based on BPM. Meanwhile, the paper comes up with a modeling method based on BPMN, which can demonstrate the process integration visually and efficiently, the architecture also combines BPEL with JPDL to fulfill the integration operation, BPEL mainly taking charge of automatic integration and JPDL with responsibility for human-involved integration of processes. Furthermore, monitoring solution based on BAM is brought forward, it is able to provide exact real-time monitoring and information feedback of processes with the help of Rules Engine. The architecture can greatly enhance the information sharing and automation of business processes, finally bring more benefits to the mold industry.
Analysis of Customization Cost Structural Model Based on Supply Chain
Authors: Wang Zhi Liang , Wang Yun Xia , Lu Yun
Published: October 2010

Providing customization product with reasonable cost for customers is one of keys for enterprise to gain competition advantage, customized product’ cost depends on customization level and postponement strategy under supply chain. As to a kind of customization product consisting of multi modules with different customer order decoupling point(CODP), this paper builds a class push/pull supply chain pattern by combining postponement with the supply chain based on analyzing customized product’s logistics / production process and customers demand transfer process, and presents a customization cost structural model. The impact of different customization degree and postponement realization form on customized product’ holding cost and total cost is also analyzed respectively. This analysis and calculation of total cost through an algorithm are helpful to find the appropriate customization degree and the reasonable postponement strategy. At last, an illustrative example is given.
A Key Parameters Analysis Method of the Quality Control in the Semiconductor Multiple Manufacturing Processes Based on Functional Data Analysis Method
Authors: Liu Yang , Zhang Zhi Sheng , Shi Jin Fei
Published: October 2010

The quality of the semiconductor products is defined by a series of the key performance parameters which have some certain relations to the electronic test parameters generated among the multiple manufacturing processes. Aimed at the quality control problem of the multiple manufacturing processes, a FDA (functional data analysis) method has been used and got the mapping relationship between the process parameters of the product lines and the product quality characteristic. A simple Change-Point hypothesis has been tested to analyze the data curves generated by the FDA method, and the key process variables have been found. Then, the equalization between the new test result and the old one has been verified by the Kolmogorov-Smirnov 2-sample test method. Some multiple manufacturing processes test data, which was collected from a semiconductor product workshop, has been modeled and analyzed. And the analysis results can illustrate the key factors of the process quality control in the multiple manufacturing processes and approach the reduction of the test times and the improvement of the efficiency and effectiveness of the equipment.
A Three-Fold Approach to Solve Dynamic Job Shop Scheduling Problems by Artificial Immune Algorithm
Authors: Wu Shan Shan , Li Bei Zhi , Yang Jian Guo
Published: October 2010

This paper aims to propose a novel three-fold approach to solve dynamic job-shop scheduling problems by artificial immune algorithm. The proposed approach works in three phases. Firstly, priority rules are deployed to decrease problem scale instead of using scheduling algorithms directly. Secondly, immune algorithm is applied to optimize the individual scheduling modules. Finally, integration schema is employed to reschedule operations and minimize makespan of gross schedule. The integration schema is carried out in a dynamic manner that the previous modules’ machine idle time is searched continuously. In this way, the machine utilization is increased while the objective of makespan minimization is maintained. Efficacy of the proposed approach has been tested with test instances of job-shop scheduling problems. The experimentation results clearly show effectiveness of the proposed approach.
Framework of Surface Integrity Model for Machined Components
Authors: Zeng Quan Ren , Liu Geng , Liu Lan , Tong Rui Ting
Published: October 2010

Groundbreaking work and past standard of surface integrity regarding description, measurement and evaluation of machined components are retrospected. Typical surface integrity characteristics such as surface topography, macro and microstructure, microhardness and residual stress distribution are preferentially adopted for quantitatively describing and systematically evaluating of surface integrity. Corresponding processing conditions and fatigue performance along with surface integrity characteristics are also detailedly classified and digitally defined through meaningful data sets. A framework of surface integrity model for machined components is subsequently proposed and preliminarily established by understanding the nature of surface integrity and its relation with processing parameters and fatigue properties. This pilot study offers a conceptual model as well as some feasible operational approaches for control of surface integrity in cutting technology and consequent improvement of the fatigue life for machined components.
Commercial Recommended Services Research Based on ASP
Authors: Zhang Wei , Pan Xiao Hong , Gao Lian Li
Published: October 2010

The ASP pattern's core is to realize on-line rental application software to achieve the win-win of small and medium enterprises (SMEs) and software developer. But the commercial recommendation service is the processing, which treats the massive information, filtrates them to provide users with valuable opportunities, and an improvement on the search strategy. Through the definition model and the solution strategy of the commercial recommendation system, the results are obtained by the collaborative filtering recommendation algorithm. Commercial recommendation service and ASP pattern union, display recommendation system's superiority, thus has a bigger profit.