bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of PID Control Algorithm Based on Improved BP Neural Network to Turntable System
Authors: Feng Yang , Xu Qing Jiu
Published: March 2012

Aiming at the problem that traditional PID control algorithm is difficult to get ideal control effect, a PID control algorithm based on improved BP neural network is proposed to improve the performance of turntable system. According to the structure and characteristic of BP neural network, the construction of PID controller and the description of improved BP neural network algorithm are introduced at first. Then, on the basis of the least square method and neural network prediction model of controlled object, the weight adjustment algorithm of PID is improved by replacing the measured values of BP network with calculated forecast output. A mathematical model of turntable control system is established and simulated. Simulation results show that the improved BP neural network PID controller has good control performance, high tracking accuracy and strong system robustness, which can be better applied to turntable system.
Accurate Calculation and Control of Dry Dual-Clutch Torque during Shifting Process
Authors: Liu Zhen Jun , Wang Lei , Ren Chuan Bing
Published: March 2012

Aiming at the work and structural characteristic of dual clutch transmission (DCT), the control of clutch torque is analyzed during shifting process; A system dynamic model has been established; Several key influence factors of clutch transmit torque are raised, and then the accurate formula for each factor is derived respectively; Model and simulation are made up by MATLAB /SIMULINK, and then the clutch torque is analyzed during shifting process for a DCT car. The results indicate that the jerk will be reduced effectively by coordinated control for the changing ratio of clutch torque during shifting process.
A Research on the Aided Method for Design of the Hot Runner Structure of Injection Molds
Authors: Lv Yong Feng , Fan Jian Bei
Published: March 2012

One of the most important technology for mold design is using the Hot-Runner (HR) system, which should be supported by much of experience and knowledge. Based on repository, this paper has presented a way to design the structure of gates, manifolds, nozzles of the HR. The system is successfully used to design multi-cavity injection molds.
An Arithmetic Function and the k-th Power Part of a Positive Integer
Authors: Wang Ming Jun
Published: March 2012

For any positive integer denotes the largest - power less than or equal to ,and denotes the smallest - power greater than or equal to . Let be a prime, denotes the large exponent of power which divides .In this paper we use elementary method to study the mean value properties of and ,and give two interesting asymptotic formulas.
An Improved Method of Solving Contact Trajectory Boundary for Spiral Bevel Gear
Authors: Wei Wei
Published: March 2012

A method of solving contact trajectory boundary is developed for spiral bevel gear. Tooth surfaces of pinion and gear are projected to axial cross section based on rotation transformation, vector operation is used to distinguish whether contact point belongs to tooth surface or not. Distances between contact point and every boundary of tooth surface are calculated, if the minimum distance is less than preset value, this contact point is considered to be contact trajectory boundary. Starting from initial point of TCA, contact point approaches contact trajectory boundary by adaptive step size, when currently step size is greater than preset step size, the value of the last contact point is used as initial value for new contact point, otherwise initial value is calculated by particle swarm optimization with penalty function, this method can improve the solving speed greatly while keeping stable. Finally, the validity and practicability of this method are proved by a numerical example.
An Optical Imaging Simulation Method for Inverted Microscope and its Application in Automatic Cell Manipulation
Authors: Du Qi Liang , Lan Xue Song , Yuan Ling , Liang Rui
Published: March 2012

For a further understanding of the features of objects in the microscopic image during automatic cell manipulation, an optical imaging simulation method for inverted microscope was studied, with an assumption of parallel rays of light. The proposed method calculated the forward direction of every ray starting from the source until it reached the lens or disappeared from the effective range. A virtual image could be generated by an imitation of a CCD sensing element. Emulations in cases of a micro glass bar, a micro pipette and an egg cell which were commonly encountered in cell manipulation were carried out, whose gray-level virtual images were contrasted to real ones for verification. Results showed a considerable effect of the proposed simulation method
Analysis of Fault Diagnosis for Rolling Bearing Based on EMD and Local Smoothness Index
Authors: Hu Ai Jun , Zhu Yu , Wang Xue
Published: March 2012

A new method based on EMD (empirical mode decomposition) and local smoothness index for rolling bearing fault diagnosis is proposed. With this method, the local smooth index of each IMF (intrinsic mode function) got by empirical mode decomposition is calculated, IMFs with smaller local smoothness index and smaller fluctuation of its smoothness index are selected to analysis with Hilbert envelope spectrum, and the method proposed overcomes blindness of choosing the IMFs with the common EMD envelope method. Factual fault signal of rolling bearing is analyzed; the fault frequency of the rolling bearing is identified accurately
Analysis of Vortex-Excited Resonance for Main Stay Bar on One Large-Span Bridge
Authors: Guo Ying , Jiang Xin Liang , Zhu Guang Yi , Shen Hong Xia
Published: March 2012

In this paper, the vortex-excited resonance analysis are performed for main stay bar of a new type large-span bridge and the structural maximum displacement response in resonance state is calculated by programming , to be obtained the maximum displacement response and its occurring position of main stay bar in the vortex-stimulated resonance state caused by wind. The bottom of the main stay bar is fixed connection and the top is hinged. Because the bottom of the main tower fixed with better conditions, the maximum displacement should occur the place where are up middle of the main stay bar under the action of external loads. The analytical results show that the real compute results are better consistency with this judge. The results of this paper provide the base for the wind-resistant design of large-span bridge and can be to references for the coming bridge
An Acoustic Experimental Study on Sound Acquisition in Standard Chinese by Native Speakers of Uyghur
Authors: Chen Hua Ying , Yang Yi
Published: March 2012

The present acoustic experiment studies the acquisition of Standard Chinese vowels by native speakers of Uyghur. The results indicate that in identifying the 7 vowels of Standard Chinese produced by the native Han Chinese speakers, Uyghur subjects with high Chinese proficiency perform better both in accuracy and reaction time than Uyghur subjects with low Chinese proficiency, and all the Uyghur subjects are not good in perceiving vowels //, /i/ and //. The results of the experiment support the Speech Learning Model and the Perceptual Assimilation Model. In addition, it shows that the second language speech acquisition is restricted by the first language phonological system.
Application of the Reverse Engineering to 3D Reconstruction on a Denture
Authors: Zhang Lei , Wang Heng , Xu Hai Li
Published: March 2012

In this paper, 3D model reconstruction on a denture that has undergone the run-in time is studied, using reverse engineering technique. In the stage of surface data acquisition, since the denture has very complicated and irregular contour, a non-contact mode is preferred. In point cloud data pre-processing, salient outliers are manually removed; Gaussian filter is used for noise suppression; curvature-based sampling is adopted for data reduction. In the model reconstruction stage, the surface reconstruction which is based on enclosed triangular Bezier surface patches is used for it can deal with arbitrary shape contours. Then, hole patching, smoothing and reduction are added for refinement of the surface creation. At last, the errors of the whole reconstruction process are measured and evaluated. The results indicate that our reverse engineering work has good performance, which can bring about comfortableness for the use of future dentures by patients.
Application of TSP in Construction of Qiupi Tunnel
Authors: Zheng Yi Feng , Men Yang , Xi Xiao Cong
Published: March 2012

The accuracy of TSP in tunnel geological prediction system is restricted to the conditions of construction site. In order to improve the accuracy of the prediction result, it is necessary to improve the collection accuracy. This article is for the angle to improvement of focal points, charging structure, optimizing the explosive charge, improvement of the detection holes for receiving conditions to improve the data precision. So that the focal point detonating degree guarantees at a higher level, the accuracy of the data is relatively well, and the interpretation results are more accurate.
Design of New Type Involute Planetary Gear Reducer of Small Tooth Number Difference
Authors: Zhang Hui
Published: March 2012

Based on the analysis of the common NN-type involute planetary gear reducer with small tooth number difference, this paper replaced the traditional eccentric axle sleeve with double eccentric crankshaft, so as to simplify the structure of involute planetary gear reducer with small tooth number difference; and then used closed graph to select the modification coefficients of the internal gear pairs thereby accomplishing the design of the new type reducer; Finally, used ANSYS Workbench software to analyze the modal of 3D virtual prototype, and arrived at a realized conclusion :the inherent frequency of the system is much higher than the input frequency, so resonance will not occur.
Design, Lift Prediction and Test of a PZT Drive Mechanism of a New Concept of Micro Flapping Wing Rotor
Authors: Lu Jing , Fan Ning Jun
Published: March 2012

To reduce the complexity involved in achieving the intricate motion and hence complexity mechanism, a new concept of Micro Flapping wing Rotor is firstly proposed to achieve active flapping and passive rotary motion. Secondly, aerodynamic analysis is made to understand schematic principles of this MFWR. Thirdly, parametric study (flapping amplitude, flapping frequency and initial angle of attack) using Theodorsen’s theory for lift prediction makes a significantly role for aerodynamic characteristics. At last, the prototype of a piezoelectric drive mechanism is designed and tested to compare the experimental data with theoretical values. The comparison shows that the lift prediction is closer to the experimental results.
Digital Design Technology in the Contemporary Architecture
Authors: Su Ping , Xiong Lu
Published: March 2012

Under the influence of development in digital science, a trend of digital design is growing quickly in the contemporary architecture. According to the function for design process, digital design technology of contemporary architecture can be summarized in three aspects: representation technology, generative technology and supporting technology. In this paper, it will study on the main idea and content of each technology, in order to discover the new developing direction of digital architecture design methods
Based on Genetic Algorithms and Artificial Neural Network Algorithms to Optimize the Structure Design and Implementation of Crane
Authors: Yu Xiao Mo , Liao Xiao Ping
Published: March 2012

This paper by using the finite element method, orthogonal test method, BP neural network and genetic algorithm to optimization of crane structure system. A dynamic optimal computational model for the complex structure system with genetic algorithm (GA)and BP neural network(NN)was presented．Instead of the traditional finite element model，this model can be used for the fast re-analysis for the vibration system．Firstly，the harmonic response kinetics analysis can be processed on a crane structure system and can find out them ode frequency which has the strongest effect on the system dynamic behavior．Secondly，from the sensitivity analysis，the design variables which are more sensitive to the system dynamic behavior can be confirmed as the input variables． Then an orthogonal experimentation was used in choosing the training sample data and the sample data was calculated through the finite element model．The artificial neural network model which presented the dynamic behavior of the structure vibration was established．At last，the neural network model will be optimized through the generic algorithm and the optimal parameters of the structure dynamic behavior will be obtained．
Design of Electromagnetic Heating Control System with Rotational Scanning in Plastic Machinery
Authors: Kong Wei Gong , Li Li Rong , Yu Min Li
Published: March 2012

The article analyzed the existing problems and deficiencies in the electromagnetic induction heating method in the production process of the current plastics machinery. Furthermore a solution is proposed to adopt rotational scanning heating via improving the power of the current heating controllers. Meanwhile, a systematic engineering approach is put forward, which is proved to be stable and reliable through industrial field trial.
Finite Element Analysis of Stress for Nozzle Zone at Channel of Pressure Vessel
Authors: Lv Xiao , Wang Shi Jie
Published: March 2012

With the development of petrochemical industry, the status of pressure vessel has become increasingly important, and higher requirements are introduced for the security of nozzle zone at the pressure bearing region of pressure vessel. In order to study the stress status of nozzle zone at the channel of pressure vessel, solid modeling for channel and straight pipe was performed with ANSYS software. Through finite element analysis and calculation, the stress concentration region of channel was determined and the reason was analyzed. In addition, the nozzle zones of the model before and after loading were compared. The result reveals that symmetrical stress concentration region lies at the junction of channel and pipe. The maximum stress is located at the inside of nozzle zone of channel and less than the yield stress of material.
Experimental Comparison of Diesel Engine’s Mounts
Authors: Yan Wen Bing
Published: March 2012

In order to choose a reasonable isolator component for engine mounting system and to isolate the engine’s vibration effectively, experiments were made on bracket vibration severity of a high power diesel engine. In the experiment, the engine worked at many working performance and used two kinds of isolator component such as rubber-isolator and wire net-isolator. The aims of the experiment were to find the effects of the main vibration excitation on the body; to master the rules of vibration with rotational speed and load; to understand the characteristic and rank of vibration severity when the engine used different isolator and to provide foundations for choosing an effective isolating component. Test showed that the wire-net isolator had better characteristics than that of the rubber isolator. The results have reference value in engine’s further design.
Cost Estimation Model Based on Improved Spreadsheet Algorithm for Assembly Line Manufacturing Systems
Authors: Zeng Bin , Wang Rui , Ma Chao Yang
Published: March 2012

Traditionally assembly cost models are established through static spreadsheet algorithms. However, there are some inherent problems in using spreadsheets for the estimation of manufacturing cost. Among these is the lack of accounting for dynamic effects caused by stochastic variation such as inventory fluctuation, downtimes, supply interruptions, and system failures. Therefore, a dynamic cost estimation model is proposed which can be seen as an integration method between spreadsheet modeling and the virtual plant concept, which maintained the accessibility and flexibility of the spreadsheet model, and did not require a significant increase in the effort level to build a simulation. However, it still includes the effects of interaction between machines, along with simulating random failures, maintenance dispatch and repair. A case study is also tested and the results verify that the methodology demonstrates the feasibility of dynamic cost model based on a number of improvements on static spreadsheet algorithms
Failure Analysis of Laminates Single-Lap Adhesive Joints under Uniaxial Tensile Loading
Authors: Yang Yin Huan
Published: March 2012

Tension tests on three different types of T700/EXOPY unidirectional laminates single-lap adhesive joints under uniaxial tensile loading were performed and effect of adherend thickness and spew fillets on strength of single-lap adhesive joints were analyzed in this paper. According to the experimental results, it is found that joint strength was not linear with the adherend thickness and much affected by spew fillets in overlap ends. At the same time, finite element simulations are carried out to analyze the peel/shear stress fields along joint interfaces and the intermediate layer of adhesive. The simulation results show that it is the main factor to leading to joint failure that the maximum peel/shear stress is occurred at overlap area edges and peel/shear stress of joints with spew fillet at the overlap area edges is less than that of joints with no spew fillet. Good agreements between the present simulations and the experimental results are found.
Experimental Study of Well Deviation Correction Model in Deviated and Horizontal Wells Production Profile
Authors: Liu Jun Feng , Guo Hai Min
Published: March 2012

There are big difference of fluid flow patterns between horizontal wells and vertical wells, so the current interpretation models of production logging multiphase flow in vertical wells are not suitable for data interpretation in highly deviated and horizontal wells. In this paper, firstly, the two-phase flow (oil-water and gas-water) simulation experiments have been carried out in large-diameter (0.124 meter internal diameter) uphill, horizontal and downhill Plexiglas pipe with practical production logging tools. Secondly, based on the conclusions of fluid flow mechanism from experimental data analysis, and considering the affecting factors (i.e. Logging tool and well deviation ), we have obtained slip velocity model after well deviation correction in highly deviated and horizontal wells, which have been corrected by the mature interpretation models. Finally, this proposed method has been proved correct and feasible through the experimental data validation.
Diesel Engine Cylinder Block Casting Process Optimization
Authors: Wang Xin Jie
Published: March 2012

This paper describes the traditional diesel engine cylinder block casting process on the basis, focusing on inline four-cylinder diesel engine cylinder block lost foam process design and optimization of application. Product pattern and pouring system model formed with expandable polystyrene beads, and assemble them into a model cluster, man can drying them after the model cluster dipping with the aid of manual or manipulator . Put the drying model cluster into the single sand box which with a negative pressure pumping system, a single dry sand rain-type sand system filling and compaction. Finally, to achieve the solidification of molten metal casting and forming under a certain vacuum.
An Optimizing Strategy of Load Balancing Based on MSTP
Authors: Tang Jun Yong , Hao Hai Yan
Published: March 2012

With Multiple Spanning Tree Protocol (MSTP) defined in IEEE802.1s, the Common Spanning Tree (CST) and additional Spanning Trees could be configured to take on load balancing in switch networks. For achieving balance distribution in traffic flows, we proposed an optimizing strategy to determine the MSTP parameters configuration in single regions. The strategy optimizes load balancing and shows its efficiency through computational results of instances. We compared the MSTP solutions in various flow load instances, and the result shows that the optimizing strategy takes an efficient load balancing when traffic flows are mainly between switches belonging to the same region.
Methods of Moving Boundary Based on Artificial Boundary in Heat Conduction Direct Problem
Authors: Zhang Xue Yan , Li Qian , Gu Da Quan , Hou Tai Ping
Published: March 2012

The initial boundary value problem for parabolic equation with Neumann boundary condition is a kind of classical problem in partial differential equations. In this paper we use the artificial boundary to solve the moving boundary problem. Potential theory and difference method are discussed. Numerical results are given to support the proposed schemes and to give the compare of the two methods.
Numerical Analysis and Test Research on Work Process of PSD in Pulse Solid Rocket Motor
Authors: Tian Wei Ping , Wang Chun Guang , Chen Cong , Yang De Min
Published: March 2012

To achieve engineering application of pulse motor as soon as possible,designed a soft pulse separation device(PSD), numerical simulated its process of bearing pressure and turning on,used the XFEM to simulate its failure form,got strain and stress distribution,found the bearing capability and failure form of the structure of soft PSD was reliable;Designed a few of verification monomial tests,verified the accuracy of simulation,proved that its bearing capability and failure form satisfied with design requirements,could be applied to pulse motor.The simulation technique,test method and conclusion are useful for designing pulse solid rocket motor configuration.
Fatigue Reliability Evaluation Model of Drillstring in Bending Section of Horizontal Well
Authors: Yan Yi Fei , Cheng Lu Feng
Published: March 2012

When drillstring rotates through the bending section of horizontal well, the fatigue damage of drillstring will be caused by alternating bending stress. Therefore, a thought to solve the fatigue reliability problem of drillstring in bending section of horizontal well is proposed. The variable amplitude alternating stress is transformed into equivalent fatigue stress, and the fatigue damage of drillstring is analyzed. Considering Palmgren-Miner rule and S-N curve, the fatigue life and reliability evaluation model of drillstring in bending section of horizontal well is established according to the fatigue reliability theory and probabilistic fracture mechanics. This model can calculate the fatigue damage, fatigue life and reliability of drillstring in the process of drilling and the maximum allowable dogleg angle where the drillstring is under compression and tension. And it has the important reference value for the fair use of drillstring and casing program design.
Fracture Reason Analysis of Coal Compactor Roller Shaft
Authors: Yin Ming , Wang Li Zhong
Published: March 2012

The cause of the fatigue fracture of the coal compactor roller shaft is analyzed in this paper. By means of investigating the macro-fracture and micro-fracture analysis for the shaft roller, and use ANSYS software to simulate the fatigue stress to find out the reasons of the roller shaft fracture and thus provides theoretical support for further optimizing the design of the roller shaft structure.This lied a solid foundation for how to improve the designation of roller shaft and how to improve the lifespan of the roller shaft
Realization of the Detecting Method for Aircraft Digital Image Transmission System Based on Multi-Processor
Authors: Duan Feng Yang , Chang Li Min , Zhan Ye
Published: March 2012

The technologies of image block, pyramid and multi-threading were used in this program to design the high-speed image generation display module and the processes of image data scheduling and mapping and solve the problems of large-capacity image data modeling and high-speed displaying. The technology of direct digital frequency synthesis (DDS) was used to design the Doppler shifting signal generation module and the multi-processor parallel system architecture, which can analog the Doppler frequency shifting of the data communication signals and solve the problem of the authenticity of communication signals during the simulated flight.
Application of Kalman Filter in Brake Inertia Dynamometer of Motorcycle
Authors: Wu Guang Shun , Zhang Li Peng , Li Zhi Rui
Published: March 2012

In order to obtain the brake’s performance and related characteristics accurately and completely, a brake inertia dynamometer with the method of mechanical and electric inertia simulation was designed in this paper. By adjusting the output torque of the motor and inertia fly wheels, the equivalent inertia of the motorcycle was simulated on the inertia dynamometer. The relation between simulated inertia and output torque of the motor was presented. Due to the strong interference and high requirement of control accuracy, a PID control algorithm was proposed for the rotational speed contro1. Moreover, Kalman filter was designed to eliminate the random noise and industrial frequency disturbance. The experimental results demonstrated that the inertia dynamometer’s accuracy and efficiency were improved significantly. Moreover, the brake testing platform worked stably and reliably.
Design and Research of Anti-Interference for Control System of Automatic MIG Welding Machine
Authors: Song Jin Hu
Published: March 2012

Based on the tasks of automatic MIG welding machine, in this paper, a SCM control system of welding machine is presented and its anti-interference design is carried out. Some hardware measures are used to resist interference, including power supply anti-interference, channel anti-interference, space anti-interference, selection of components, circuit layout and hardware "watchdog". Redundant instruction, software "trap", software "watchdog" and other software anti-interference measures are also adopted. NB-500IGBT inverter welding machine is used for welding test and the results show that the above mentioned hardware and software anti-interference measures are effective to solve the interference for control system of automatic MIG welding machine.
Research on Energy Consumption Analysis Method Based on Improved Fuzzy Analytic Hierarchy Process (FAHP) in Iron and Steel Industry
Authors: Qiu Dong , Wang Xiao Bo , Fu Ying Ying
Published: March 2012

The relations between production process and energy consumption are made an in-depth application analysis and theory study with theory of systematic energy-saving , technique of intelligence analysis and optimization based on the background of study on energy-saving and reduce energy consumption. Making intensive research on theories of systematic energy-saving and analyzed with function mechanism and quantitative relation of the main production system, auxiliary production system and energy conversion system. It put forward the energy flow direction and energy consumption in each production process and the influence of material flow on energy consumption in iron and steel industry. The sequence of all kinds of material influence comprehensive energy consumption per ton steel and energy quantitative target of all factors influence energy consumption are worked out with improved fuzzy AHP(Analytic Hierarchy Process) which study of comprehensive energy consumption in typical iron and steel production process from the point of system. It has great immediate significance to guide drawing the scientific plan of economy-saving and reduce energy consumption in iron and steel industry
Apply the Route Diagram of the Clothing Business Enterprise Sample Product Technique Level of the High Technology Exaltation Analysis
Authors: Wang Feng Qi , Wen Jia Qin
Published: March 2012

Aim at a wearing of dissimilarity to pack object community, clothing to cut, sample product creation, stereoscopic cut, the clothing CAD software, each good and bad, however which excellent which inferior? Have a kind of method to take its essence, gather its advantage and merge into an integral whole, make the way that it becomes more for science reasonable and suit various clothing category of clothing sample product creation? Modern science and technology has already spread for this kind of form even road. This text tidies up these conditions on the foundation that have already at present and hint that the clothing business enterprise makes use of these conditions to obtain a reasonable sample product creation method to raise sample product technique level.
Design of a Precision Three-Coordinate Measuring Machine Based on SCM
Authors: Shen Long Zhang , Fan Yu Jin
Published: March 2012

A low-lost, easily-use, non-contact three-coordinate measuring machine was researched and designed by using a laser head of CD-ROM as its detecting element, which could measure the micro-displacement of surface precisely. Researching and taking full advantage of the auto-focusing detecting principle and process circuit of CD-ROM, the machine simulated the action of disk read by using the MCU AT89S52, and read the voltage value of voice coil motor as the Z-coordinate’s value of this point. The system could work in 0.1 μm of the range of 20μm, which might be used to measure the figure of super smooth surface.
Parametric Design of Spiral Bevel Gear Based on Pro/E
Authors: Wang Wei , Liu Wei , Chi Yan , Cui Xiao Mei
Published: March 2012

Considering the influence of the cutter head plane on manufacturing of spiral bevel gear, the method of 3D model for spiral bevel gear is built based on Program Pro/E. The relationship between the geometric parameters (such as addendum circle, dedendum circle and base circle) and the basic parameters (such as modulus and the number of teeth) of spiral bevel gear is established by using the inner program. The parametric solid model of spiral bevel gear can be obtained automatically by rotation, sweep, blend, and pattern after inputting the basic parameters. This method is significant to improve the accuracy of design and manufacturing of spiral bevel gear.
Design of Portable Comprehensive Test System of Aircraft Wire
Authors: Shi Xu Dong , Zhang Sheng Biao , Jing Tao
Published: March 2012

A portable comprehensive test system of aircraft wire based on DSP is presented in this paper. The hardware system consists of electrical parameter measurement circuits, transmitter circuits, signal acquisition circuits and so on. Measurements of electrical parameters and fault location through Time Domain Reflectometry (TDR) are two basic functions for the system. In addition, the special resistance of the wire can also be gotten on TDR. In daily maintenance, comprehensive performance test and portable characteristics have greatly facilitated the maintenance division.
Performance of a Parabolic Flexible Joint Using Compliance Closed-Form Equation
Authors: Hu Jun Feng , Li Pei , Cui Xiang Fu
Published: March 2012

Considering the effects of structural sizes of a parabolic flexible joint on its performance, compliance, sensitivity and accuracy analysis are performed in this paper. The closed-form equations are formulated for compliances to characterize both the active rotation and all other in- and out-of-plane parasitic motions, and accuracy equations are also obtained by using the Castigliano’s second theorem. According to the closed-form compliance equations, the effects of the structural parameters, such as thickness, notch depth, length and width, on the compliance of flexible joint are analyzed, respectively. In order to explore the effects of variations of the structural parameters on its compliance, the sensitivity analysis is carried out. And the accuracy analysis of the parabolic flexure joint is performed. The analysis results have shown that the parameters have large influence on in-plane compliance, and have small effects on out-of-plane one. And changes of compliance are larger within initial small range of parameters, while it has small variation in larger size range. And the length of joint has no effect of sensitivity
Research on the Simulation of TT&C System of Space Survey Vessel
Authors: Wang Shao Shuai , Chen Guang , Zhou Lin Qi , Yao Lu
Published: March 2012

Aiming at building simulation system with great extensibility, a HLA-based distributed simulation system of TT&C (Tracking, Telemetering & Commanding) System of space survey vessel was designed and implemented which suited the special requirements of space survey vessel. The system was composed of USB simulator, UCB simulator, pulse radar simulator and data process center simulator and so on. Based on the simulation system, the main function and key technology were introduced and a prototype was built to verify the system.
Outstanding Influence Factor Research of Wet Friction Thermal Field Based on iSIGHT
Authors: Han Ming , Ning Ke Yan , Wang Jian Bing , Wang Zhi Yong , Li Yong Jun
Published: March 2012

Comprehensive considering wet friction influence factors, such as material parameter, geometry, lubricate condition of friction, The MM1000 friction thermal model has been built through the software, Abaqus. Under the iSIGHT environment, outstanding influencing factors of wet friction thermal field has been researched through integrating Abaqus, the result showed that outstanding influencing factors of thermal field include thermal capacity of friction material, thermal capacity of pair material, heat conductivity of pair material. Convection heat transfer coefficient, friction coefficient, thickness of friction layer have lesser affection on thermal field in short time
Furniture Form Bionic Design Methodology
Authors: Chen Yu , Hu Rui Bo , Ye Xi
Published: March 2012

This paper, starting from the furniture form bionic from bionic thinking characteristics, development and human of enlightened thinking, this paper describes form, the feasibility of bionic from functional, external form, colour, internal structure, the movement rule of form of bionic feasibility analysis, further elaborates the design method of the bionic form furniture. Make form bionic, make the person and nature visualization between the sort of inherent rapport, through the form of bionic design and the nature of the harmonious coexistence between biological form has the possibility
Research on Environmental Adaptability Evaluation of Engine Based on Fuzzy Evaluation
Authors: Wang Xian Cheng , He Xing , Zhang Jing
Published: March 2012

Investigation on environmental adaptability of special vehicle engine is scarce and its current evaluation system is unjustifiable in our country. Based on the fuzzy evaluation theory, referenced the criterion of American army environmental adaptability experiment, the paper determined the engine environmental adaptability evaluation fuzzy sets, baseline vectors and weight coefficients by the methods of hierarchical analysis and expert scoring. Then an environmental adaptability evaluation model was established to analyze and evaluate the engine environmental adaptability of the typical areas. The results indicate that the environmental adaptability of Bange in Tibet province rank "poor", Turpan in Tibet province rank "good", and Mohe in Heilongjiang province rank "average".
Design of Conjugate-Cams for High-Speed Paper-Separation Mechanism
Authors: Zhang Chun , Xiong Teng Fei
Published: March 2012

A kind of paper-separation mechanism of packing machine for medicine was introduced in this paper. A new contour line of cam is designed on the basis of the analysis of suction nozzle. The design of the profile of conjugate-cams provides theory evidence for the design of high-speed paper-separation
Study on Die Surface Coating by Electric Discharging Machining
Authors: Li Xiao Hai , Wang De Cheng , Fang Yu
Published: March 2012

A new method of die surface modification by ordinary Electrical Discharge Machining (EDM) is described. First, the surface modification mechanism by EDM is studied, which is different with ordinary EDM. Secondly, the influence of important electric parameters on the effect of electric discharging coating in working fluid is analyzed, which is helpful to improve the coating layer. At last, the new type special pulse power supply with additional pulse current is designed. The special pulse power supply for electrical discharge coating behaves well, and the compacted coating layer without cracks deposited on the surface of die by EDM can be obtained, which can prolong the life of die
Research and Design on Monitoring System of Simple Bridge Based on Virtual Instrument Technology
Authors: Zheng Hua Wen , Chang Liu , Wu Chuan Hui , Liang Yu
Published: March 2012

Design of a monitoring system based on virtual instrument technology for a simple bridge. This paper discusses the bridge monitoring system structure, software and hardware. The system can realize functions such as data acquisition, real-time data display, online analysis, offline analysis, data management and so on. Therefore, the monitoring system can be applied to a variety of bridges. The presented monitoring system has an important guidance meaning and practical value for bridge monitoring.
Fabrication of Flaky Magnetic Composite Particles
Authors: Zhang Wen Qiang
Published: March 2012

Diatomite coated with ɑ-Fe films were obtained by Chemical Vapor Deposition process. The resultant Fe-coated flaky diatomite particles had low densities. The results show that Fe coated diatomite flakes can be achieved, and that the coating consisted of ɑ-Fe nano-crystallite. The complex permeability and permittivity of the composites were measured in the frequency range of 1–18 GHz. The microwave absorption properties of these flaky particles are discussed. The results indicate that the flaky particles have potential to be used as a lightweight broad band microwave absorber.
The Simulation and Comparison of Synchronous and Serial Regulating Gates Method in the Emergency Status of Long Distance Water Project
Authors: Han Yan Cheng , Luo Hui
Published: March 2012

For long distance water transmission project, choose a more effective control method is very import for safety and decrease loss in the emergency status. In the past, the serial regulate gate method is adopted oftentimes. However, its disadvantages are obvious, such as lower efficiency and rapid dropping speed of water lever which easily lead to landslide. This paper proposes a synchronous regulating gates method for emergency control which ensures the flow of open channel can reach new status of uniform flow in shortest time. The results of simulation show the dropping speed of water level using synchronous regulation method is significantly smaller than serial regulation method. The total time requires significantly less than serial regulation method too.
The Study on Building Structure for Vibration Control
Authors: Li Long Jiang
Published: March 2012

The paper takes the 3-tier building structure as research object, and similar model is made based on similarity theory, by optimizing design the parameter of the MRF absorber is obtained, by means of accelerating sensor and data acquisition card, a set of testing system of semi-active vibration control used for building is designed, the effect on shock absorber of MRF absorber is studied and validated, at the same time, providing the theoretic method and proof for the vibration experiment of building structure by MRF absorber.
The Development of a Multi-Functional Composite Embedded Smart-Skin Antenna Structure
Authors: Xie Zong Hong , Zhao Wei , Li Lei , Zhang Peng
Published: March 2012

This paper focuses on the research and development of the “Multi-functional Composite Embedded Smart-Skin Antenna (MECSSA) Structure” with load-bearing, shape maintaining and communication capabilities. MECSSA structure consists of top and bottom composite thin facesheet, honeycomb core, 4 by 8 micro-strip antenna arrays located among honeycomb core and some adhesive. Simulation and experiment methods were used to study the performance of MECSSA structure. Through the study we found that adhesive is the significant factor of affecting the electrical performance of MECSSA structure, especially for radio frequency (RF) and it must take into account in the research. There may be two ways to avoid the influence of adhesive: compensation and separation. Three point bending test indicated that the strength of MECSSA structure satisfies design requirements.
The Design of the Ethernet Meter Reading System Based on Broadband Power Line
Authors: Tian Ye , Ren Yan Feng , Wang Guang Hua
Published: March 2012

According to the current national conditions and the intelligent communities’ requirements on the electric energy metering system based on the broadband power line communication (PLC), this paper introduces a design program for achieving the remote meter reading through the broadband PLC technology. The system takes the high-performance single chip microcomputer and the Ethernet controller RTL8019AS as the core, the low-voltage power line as the medium of data communication, and makes the electronic meters access to the Ethernet via the broadband power line, thereby achieving the remote automatic meter reading. The multi-functional low-voltage power line remote meter reading system constituted by this system and the backstage management system together will have broad application prospects. In addition, this paper also makes a preliminary study on the reliability of the meter reading system.
Weight-Reduction Optimization Design for Milling Planer Bed Based on Finite Element Analysis
Authors: Sun Dong , Yang Xu Dong
Published: March 2012

The milling planer bed is one of the most important foundational parts for the entire machine, sufficient stiffness is required. The posterior segment of a certain milling planer bed is regarded as the optimization object in this paper. Three-dimensional modeling method is used to calculate the exact weight of the bed and then finite element analysis is used to research the static and dynamic characteristics before and after weight-reduction. The weak link of the bed is found out and a improvement scheme is put forward ensuring lower production costs under the premise of sufficient rigidity.
The Embedded Data Collecting System of Multi-Channel Based on ARM
Authors: Zhang Yan Bin , Liu Chao , Xiong Chao , Guo De Qing
Published: March 2012

Along with testing needs of equipment for modern artillery, the article built an embedded data collection system of multi-channel used microprocessor of ARM. The embedded data collecting system introduced the hardware components, hardware module and design of its software. It had the test data stored in SD card memory, which was leaved in cache and conversion of format, then operating storage and processing of post-data. It shows that: the system can reliably and accurately collect multi-channel signal, and achieve to check artillery’s equipment in the experimental results.
Vehicle Loading Length Measurement System Research Based on TRIZ
Authors: Xie Chun Li , Liu Yong Kuo
Published: March 2012

TRIZ theory is advanced innovation theory. There are many methods to solve the problems and to provide guidance for practical problem solving. Using functional analysis method of TRIZ analyses the functions of existing system and comprehensive and clear understanding of the existing system function. On the basis of function analysis get the deterioration parameters and improved parameters, using technical contradiction to find innovation matrix and achieve the innovation principles, the innovation principles can inspire to find a better solution approach to the problem. The solution was verified by the experiment, the results proved that the method can accurately measure the length of the loading vehicle.
The Application of Proliferated Form in Designing Product Modeling
Authors: Yang Wei
Published: March 2012

In the structure of the product modeling design, there is a kind of Proliferated form that is shown as form in quantity proliferation, is also proliferation in the form of all kinds. Proliferating form endowed modeling with new vitality and the urge to multiply. Proliferating form includes the structural proliferation, derivative proliferation, chaotic proliferation, heterogeneous proliferation and repetitive proliferation
The B/S Structure Design of Firefighting Equipment Management System for Fire Brigade
Authors: Pei Qiu Hong
Published: March 2012

This system based on the fire control safety management demand of Fire Brigade’s firefighting equipment. The system is composed of five modules, such as user management mo¬¬¬dule, firefighting equipment maintenance module, firefighting equipment query module, firefighting equipment browse module and message board module. realizing the category of users access point unit management mode, access for" administrator", " cadre", " soldier ", giving different users different permissions. Using Microsoft Visual Studio 2008 developing platform, Microsoft SQL Server 2005 DBMS and C# developing language, the firefighting equipment management system of Fire Brigade is designed. Using Silverlight as page maker and the production of database access all adopt storage process, improving the efficiency of database access. Also it can make the management of firefighting equipments more scientific and reasonable.
The Finite Element Simulation Analysis of Tapered Bearing Retainer and Optimized Selection of Mould Parameters
Authors: Jiang Yong Wu , Chen Yang , Liu Jin Dong
Published: March 2012

This article mainly studies about the stamping processing of the tapered bearing retainer which mainly presents the finite element simulation of the tapered bearing retainer stamping process using Deform software. The author put forwards that how to analyze the stress and strain distribution laws, the shear stress, the stamping force and their influence law, also analyzes the influence the main parameter has on the stamping process and make the optimized selection.
Research on Concept Design of Hot Runner Based on Axiomatization and Knowledge Unit
Authors: Lv Yong Feng , Lai Jian Liang , Xu Chun Wei
Published: March 2012

From the basic concept of knowledge unit, with the efficient combination of axiomatic design and knowledge unit, using the hot runner system design of injection mold as the carrier, this article presents an information modeling method for concept product based on axiomatic design and knowledge unit as well as establishes corresponding model.
Research on Flexible Bonnet Polishing Process Method and Related Technology
Authors: Sha Shu Jing , Wang Long Shan , Shi Yong Jie
Published: March 2012

Bonnet tool polishing is one kind of methods that can obtain higher surface quality of the ultra precision processing for producing flat, aspheric and other mould free surface, etc. The latest development and research results on bonnet polishing technology at home and abroad were reviewed. The core technologies of bonnet polishing were analyzed, including polishing principles, polishing tool, the rate of material removal, edge control, dwell time, path planning etc. The results show that the bonnet polishing method is an economic, efficient, practical and high precision polishing technology.