bluuebunny/crossref_metadata_2025 huggingface dataset:
Simulation Study on a Parallel Hybrid System of Hydraulic Excavator
Authors: Liu Chang Sheng , He Qing Hua , Gong Jun , Zhao Yu Ming
Published: August 2014

Based on low utilization rate of energy and high fuel consumption, a parallel hydraulic & electric configuration for hybrid excavator was proposed according to the capacitor and motor. The mathematical model of key components such as engine, electric motor, and capacitor were established. For the hybrid power system based on SUNWARD 20T hybrid excavator, the paper established simulation model and analyzed the energy saving effect of hybrid system by simulation based on the actual load spectrum of hydraulic excavator as input signal. The results indicate that adopting the parallel hybrid system are helpful to improve the energy saving effect of hydraulic excavator, and the energy saving efficiency is about 23.6%.
The Design of the Fixture for the Thin Wall Cone Parts
Authors: Zhou Yan , Zhang Hu , Qiang Huan
Published: August 2014

When turning and grinding the long axis with cone thin-walled, they are clamped to be deformation easily and positioned difficultly. Based on the existing theory of clamping with the conical sleeve, we design a new type of fixture in this paper. The outer cone of the fixture cling to the inner cone of the workpiece, it is sealed hermetically at the both ends. The head of the sleeve stretch out of a cylindrical boss, we can use the three-jaw chuck to position it on the machine tool. Also we use the steady rest to fix the end of the sleeve. The steady rest connect with the shell of a rotary joint. The end of the rotary joint screw with the sleeve, the other end of it is connected with a getter pump. It formatted a vacuum between the sleeve and the workpiece by the use of holes around the circumference of the sleeve. The utility model to the fixture used for thin wall conical parts with long shaft.
The Nanocutting by Rigid/Elastic Tools with Nose Radius at the Gas Environment Using Molecular Dynamics Simulations
Authors: Huang Jen Ching , Cheng Fu Jen
Published: August 2014

.This study successfully simulated the single crystal copper nanocutting by a rigid body /elastic tools with nose radius at the nitrogen gas environment using molecular dynamics, and analyzed the workpiece temperature distribution and dislocation during nanocutting. After simulations, it can be found that when cutting with the elastic body tool, the tool itself was still distorted slightly, however, the cutting results of the elastic tool and the rigid body tool of the tool are not the same. The chip temperature was highest near the central rake and nose.The workpiece temperature when the elastic body tool cutting was lower; the temperature in the nose and rake plane is the highest, the more away from the nose, the lower the temperature.
The Research of New Rings Process of Casting-Rolling Continuously Forming
Authors: Jia Lu , Li Yong Tang , Ju Li
Published: August 2014

The traditional production process of large seamless rings brought the serious waste of material and energy. 42 CrMo alloy steel was taken as material of the rings. The research of Casting-Rolling Continuously Forming process was Smelting Casting→ Ring blank→ Concurrent heating and heat holding →Hot rolling forming. The work reported here concentrates on resolving the energy consumption, consumables, low production efficiency of ring production, provided some reference for the rings production.
UML Based Design Approach for Storage System of Nano-Satellite
Authors: Wang Hong Hao , Wang Hui Quan , Jin Zhong He
Published: August 2014

Due to the complex timing sequence of NAND flash, a unified design process is urgently required to guarantee the reliability of storage system of nano-satellite. Unified Modeling Language (UML) is a widely used high level modeling language for object-oriented design. This paper adopts the UML as the design and modelling tool in the low level storage system design to elaborate the UML application in each phase of design in detail. The result shows taking UML as the modelling tool results in a clear and unambiguity design, which promotes the reliability and quality of software. At last, the feasibility of object-oriented implementation in C is presented.
Biomechanical Analysis of Typical Upper Limb Movements Based on Kinect-LifeMOD
Authors: Zeng Ming , Chen Chang Wei , Meng Qing Hao , Ren Hong Lin , Ma Shu Gen
Published: August 2014

In traditional biomechanical analysis of upper limb, the high-precision motion data and lifelike human models are needed. It is obvious that those processes are costly and time-consuming. In this paper, a novel and simple combination method based on Kinect-LifeMOD is proposed. Firstly, the Microsoft Kinect (a latest depth sensor) is used to build a cheap and precise motion capture platform. Real-time and reliable key-node rotation data of human skeletons can be acquired by this motion capture system. Next, rotation data is converted into position data as the input of the LifeMOD software which can establish mathematical model of upper limb and execute biomechanical analysis automatically. The experimental results show that the proposed method could achieve the satisfactory performance.
Data Flow Analysis on 3D Printing for Distributed Manufacturing Information System
Authors: Xu Wen Jin
Published: August 2014

3D printing is a new kind technology with great future. As a new processing technology in the intelligent manufacturing, it will change the way of mass production assembly line as the representative of the second industrial revolution. At the same time, distributed production need new data flow strategy and new network for big data. In this article, we introduced the research for the distributed manufacture network and data flow analysis.
The Dynamic Strength Calculation on the Reel Fulcrum of Crane Based on ADAMS and FEA
Authors: Wu Feng Qi
Published: August 2014

Based on the multi-body system dynamics in the ADAMS environment, a virtual prototype of the reel fulcrum of crane was developed. In this model, the whole system was disassembled lifting mechanism system with flexible body dynamics model of the wire rope. The virtual running environment was established according to the actual crane operation cases, which is designed the hanging & lifting working process. It is the key step to build the reel fulcrum dynamics model for performance analysis of system dynamics, which is the basis for the optimize design of the reel fulcrum of crane. Theoretical model analysis usually does not consider the coupling force status of the reel fulcrum of crane. It is a steady-state analysis to the reel fulcrum of crane models. These models have played an important role in the assessment of the reel fulcrum of crane performance and the system parameters, but do not reveal the interaction of the reel fulcrum of crane and the wire rope, which fail to be a comprehensive understanding practical system dynamics characteristic. Virtual prototype simulation results will be applied to prototype design and evaluation, and save a lot of manpower and material resources. At the same time,the method has an advantage for dynamics analysis to simulating some dangerous movement conditions, which is hard to be replayed or simulated at the test actual working condition site. In particular, some cases cannot be recurrence in the accident handling process. The simulation results show that the response value. Variable stiffness characteristics of wire rope of hoisting mechanism are implemented successfully through discrete multiple rigid body being applied to the wire rope in this paper. The establishment of the Reel fulcrum dynamic model is based on ADAMS, which realizes the reel fulcrum of crane system coupling modeling. These results show that the model reflects the actual dynamics of the reel fulcrum of crane, and also presents that some of the theoretical analysis results cannot be usually confirmed.
Parameter Identification of a Plastic Damage Model
Authors: Shen Xin Pu , Wang Xiao Chun
Published: August 2014

Studies on parameter identification of a plasticity-based damage constitutive model for concrete are presented in this paper. Differences between the stress-strain curves experimentally obtained and the ones numerically obtained at local level were used as the objective functional of a regularized least square method. For solving the inverse problem, the solution of the direct problem at local level obtained by a driver subroutine was embedded in the iterative solution procedure for the inverse problem proposed in this paper. The sensitivity matrix was calculated numerically by the finite difference method. Numerical examples are given for fitting the numerically obtained stress-strain curves on to a set of experimental results. Parameter identifications under various loading cases, which include uniaxial extension and triaxial compression with different confining stresses, were performed. Results indicate that the numerical scheme is stable and has reasonable accuracy.
Research on the Molding Condition of 3D Braided Nozzle Throat Fabric
Authors: Jiang Yun , Wan Zhen Kai
Published: August 2014

3D braided fabric lining mandrel weaving, throat is the key part of nozzle which should meet the requirements of molding. This paper based on the research between geometry and knitting yarn array of 3D braided nozzle fabric, proposed the basic conditions which influence the molding performance of nozzle. Theoretical derivation the formula of reasonable yarn array and cross-section parameters of yarn. Verify its correctness by actual production of 3D braided nozzle fabric. The CT scan image and the moire pattern of fiber volume percentage showed that the throat size of fabric and roundness well matched with mandrel, fiber volume percentage changed uniform which satisfied the requirement of engineering application.
Stress Analysis for Globoidal Indexing Cam Mechanism with Steel Ball
Authors: Li Lei , Zhang Cheng Liang , Wang Ming
Published: August 2014

This paper presents stress analysis for globoidal indexing cam mechanism with steel ball, and stress model of each component is established. Globoidal indexing cam mechanism with steel ball is made up of globoidal cam, indexing plate and steel ball. The mechanism can realize approximate rolling transmission. Stress is analyzed for globoidal cam, indexing plate and steel ball at dell and indexing period respectively. According to rotary transform tensor theory stress in different coordinate system is obtained to build static equilibrium equations for steel ball conveniently. Axial force, radial force and peripheral force for globoidal cam and indexing plate are reached.
Multi-Type of Generators Scheduling Optimization Model Based on LHS Method and the Mean-CVaR Model
Authors: Yue Hai Tao , Peng Dao Xin , Huang Min Fang , Tan Zhong Fu
Published: August 2014

In order to study the multi-type of generators scheduling optimization model,this paper is based on the LHS method and Mean - CVaR model for research. LHS method is informed as an improved method which can overcome the disadvantage of wind power simulation method of the most commonly used - the monte carlo method which needs a lot of statistical data. Scheme - CVaR model set the minimum electric abandon the wind as the goal, then select the minimum system energy consumption of power generation cost and the minimum pollutant emissions from power generation as the objective function of system combined power generation performance of scheduling ,then under certain constraints, and finally reach the purpose of optimized we expected.
Key words: LHS method, Mean - CVaR model, Kantorovich distance
Numerical Investigation of Choking Cavitator Based on Orthogonal Experiment
Authors: Zhang Feng Hua , Shan Li Wei , Tang Chuan Lin
Published: August 2014

The different structures of choking cavitator were studied by using numerically simulation based on the orthogonal experiment. Many different structures of choking cavitator were researched to get a set of parameters which can produce much stronger intensity of cavitation. The results of investigation show that the optimal values of characteristic parameters are the optimal flow value of 1.5 m3 / h, entry point of the optimal value of 35 o, the outlet diameter of 9 mm, the back pressure of 70 kPa and the throat length of 70 mm.
Research Method and Key Design Themes of a Multifunctional Jacket with Optoelectronic Effects
Authors: Shih Ju Yi , Lai Shu Ling , Cheng Huai Tzu
Published: August 2014

A method of modified innovative product design and development has been developed and used for a design work of innovative and multifunctional jackets with optoelectronic technologies in this study. This method has five working steps, including opportunity definition, opportunity exploration, opportunity confirmation, opportunity realization and achievement valuation. At first, the method of personas was used to develop key factors of design themes for an innovative jacket, and then the Delphi method was utilized to identify these factors by a group of experts. This paper described the design method, and illustrated the process to find out and decide design criteria for developing a jacket with optoelectronic effect.
A Control System on Soil Temperature
Authors: Chen Shi Guo , Hu Li Hua , Wu Dong Sheng , Chen Xue Yong
Published: August 2014

The soil’s temperature plays an important role of soil ecology research. In order to gain and control soil’ temperature. A control system is proposed for soil’s temperature. And a new control algorithm which is based on the PID algorithm is designed in the control system to handle the complex change of the soil’s temperature. It does not need to know the mathematical model of soil’s temperature. At last, the control result is analyzed in this paper. The result shows that the soil’s temperature is controlled ideal by this control system which is accurate to 0.5°C.
100MHz to 2.5GHz RF Detector Based on SiGe HBT
Authors: Chang Ren Yuan , Chi Bao Yong
Published: August 2014

A RF received signal strength indication (RSSI) circuit with 100MHz to 2.5GHz frequency bandwidth was designed based on Jazz 0.18 μm SiGe HBT process. The RSSI was composed of 4 cascaded limiting amplifier and full wave current rectifier. A novel DC offset compensation circuit was adopted to achieve stable operating point. The circuit was simulated with Cadence design kit. Results showed that the RSSI had a wide dynamic range from 45dBm to 0dBm, operated at a 3.3V single supply. The power consumption is 18.8mW.
The Factors Influencing the Surface Quality of Machining and Improving Measures
Authors: Leng Chao Qun , Luo Xian Jing
Published: August 2014

In this paper, the machining surface quality was analyzed, and points out the factors influencing the surface quality of machining, and proposes the measures to improve the quality of machining surface, has certain guidance for engineering practice.
The Model Establishment and Simulation Analysis of Controllable Pendulum
Authors: Li Fan , Shen Geng Biao , Zhang Zi Chao , Zhao Jian Hui
Published: August 2014

Indicating vertical in moving base to establish horizontal reference is of great significance for the near-earth autonomous navigation. Existing vertical indicating device achieves the goal by using gyro stabilized platform, but the gyroscope is difficult to maintain and has drift error. This paper proposes controllable pendulum system that is a stable closed-loop control system and similar to inverted pendulum system to accomplish the purpose. This paper covers the preliminary validation of the controllable system’s ability of indicating vertical in pulse interference cases and raises the defects of system under condition of step disturbance, by establishing mathematical model, designing double output PID controller and analyzing error , which lays the foundation for follow-up study.
The Research of Network Intrusion Detection Technology Based on Genetic Algorithm and BP Neural Network
Authors: Ke Gang , Hong Ying Han
Published: August 2014

The traditional BP neural network algorithm is applied to intrusion detection system, detection speed slow and low detection accuracy. In order to solve the above problems, this paper proposes a network intrusion detection algorithm using genetic algorithms to optimize neural network weights. which find the most suitable weights of BP neural network by the genetic algorithm, and uses the optimized BP neural network to learn and detect the network intrusion detection data. Matlab simulation results show that the training sample time of the algorithm is shorter, has good intrusion recognition and detection effect, compared with the traditional network intrusion detection algorithm.
Transient Stability of Power System Based on Multi-Agent System
Authors: He Xun Yu , Liu Fang , Ma Zhuan
Published: August 2014

With the expending of power system and the complexity of system structure,operating stability, reliability and economy is faced with opportunities and new challenges.this paper, A hierarchical classification control structure is hired to finish coordinated control tasks based on multi-agent system,The simulation results show that decentralized coordinated control scheme is better than a simple decentralized robust control, decentralized coordinated control programs, especially in the case of large interference effect, Thus, the proposed scheme is effective to improve power systems transient stability and to enhance the robustness.
Waveform Measurement and Analysis of Common Household Appliances
Authors: Wang Xin Tong , Wang Xiao Bo , Zhang Hui Zhong
Published: August 2014

Electricity power companies have the obligation to provide qualified electrical energy to the power user, the same as electricity customers, the power company claims to provide qualified energy, electricity customers are obliged to choose the right appliances to minimize the impact on the power quality of the power system . Higher harmonics is an important indicator of the impact of power quality, household appliances majority of non-linear loads, the use of the process will produce high harmonics, although the power is not, but a huge number, pooled together, will still PQ great impact. Therefore, the measurement of electrical waveforms common household appliances, will harmonic analysis, harmonic control, or other harmonic study is instructive.
Application of BP Neural Network PID Algorithm in Refrigerated Space Temperature Control
Authors: Tian Wei , Peng Yi Zhun , Wang Pan , Wang Xiao Yu
Published: August 2014

Taking the temperature control of a refrigerated space as example, this paper designs a controller which is based on traditional PID operation and BP neural network algorithm. It has better steady-state precision and adaptive ability. Firstly, the article introduces the concepts of the refrigerated space, PID and BP algorithm. Then, the temperature control of refrigerated space is simulated in MATLAB. The PID parameters will be adjusted by simulation in BP Neural Network. The PID control parameters could be created real-time online, which makes the controller performance best.
Application of Parameter-Adaptative Fuzzy PID Control in the Temperature Control System for Liquor Filling and Sealing Machine
Authors: Gong Qin Hui
Published: August 2014

In order to improve pass-rate of liquor filling products; avoid poor quality as a result of liquor leakage and volatility, the sealing device for liquor filling and sealing machine has been improved, a parameter-adaptative fuzzy PID controller and a temperature control device based on a single chip microprocessor have been designed. Practical applications have shown that the parameter-adaptive fuzzy PID control system has high control precision and good tracking performance, small overshoot, strong anti-voltage disturbance, stable and reliable heat seal connection quality, and can meet the requirement of production process.
Key words:liquor filling and sealing machine,parameter-adaptative fuzzy PID control,single chip microcomputer,temperature control ,sealing device
Approach to Design Digital Meter for Monitoring Armored Vehicle Engine
Authors: Qiao Xin Yong , Liu Jian Min , Zhang Xiao Ming , Liu Jun , Liu Zhong Qing
Published: August 2014

Studied on the approach to design digital meter for monitoring technical state of armored vehicle engine through digital measurement of engine speed, oil temperature and cooling water temperature, etc. Used a chip microcomputer to collect, calculate, store and manage all the data automatically, used CAN bus to realize data communication between the chip microcomputer and a main controller and used a two-stage anti-jamming measure to improve electromagnetic compatibility. Developed a digital termination to display and monitor these engine parameters. Such a digital monitoring system gives a technical support for automatic measurement and monitoring as well as information development of armored equipment.
Auto Disturbance Rejection Control Strategy for Large Inertia Servo System
Authors: Zhang Ke , Jin Long Xu
Published: August 2014

For large inertia servo system, improving the system response speed and control precision has always been a difficulty. This paper presents an improved auto disturbance rejection control (ADRC) strategy, which has good control performance for this kind of system. Firstly, transition process is arranged for input signal, which can solve the contradiction between overshoot and rapidity, can also increase the regulation range of feedback gain; secondly, linear extended state observer is designed to identify load changes and other fluctuations; then, for the control plant after observation compensation, a nonlinear feedback controller is designed to obtain better control performance and better disturbance rejection capability. The simulation results show that, compared with the traditional PI controller, with the control strategy suggested in this paper the system has rapid response but very little overshoot, and has strong ability to suppress interference. The design of this controller is simple, easy to implement in Engineering, so it may have important reference value for this kind of large inertia system. Keywords: servo control; large inertia; auto disturbance rejection control; torque ripple; low speed
Design for Speed Measuring of Railway Crossing Based on Track Circuit
Authors: Xiao Hong Xiang , Zheng Shu Yu
Published: August 2014

In order to realize the warning at the fixed time for the trains closed to the railway crossing, a design method for speed measuring of railway crossing was proposed based on track circuit. Two 25-meter track circuits were set at far end of railway crossing, when the trains closed to the railway crossing, the two track circuits was operation in turns. The single-chip circuit was used to calculated the time interval of the two track circuits operation, then the speed of trains was known and sent to the crossing control center and we can determine the reasonable time about the crossing closed. Experimental results show that speed accuracy can be achieved 0.1m/S that can meet the system requirements.
Design of a Two Levels Self-Integrating Capacitive Divider
Authors: Cao Bao Feng , Fan Jiang Bing , Song Li Jun , Zhang Xue Qin , Li Xin , Zhao Hong Wei , Li Peng , Ning Wang Shi
Published: August 2014

A
ims
. A kind of two levels self-integrating capacitive voltage divider is designed to online measure high voltage nanosecond pulse. Methods. The circuit principle of capacitive divider is analyzed, and the theoretical voltage ratio is calculated. The calibration is carried out by using a low voltage pulse source. The divider with a primary voltage divide ratio 601 has been tested to frequency response exceed 1GHz. The second voltage divide ratio can be set flexibly using different ratio attenuators according to the different voltage level of the source. Result. Finally, this divider is used in measuring 600kV high voltage pulse source, and the experimental results show that the present coaxial capacitive divider is reliable and satisfactory for the measuring requirement in time domain and frequency domain.
Design of the IDCTMV Human-Machine Ergonomics Test System
Authors: Wang Quan , Liu Wei Ping , Jin Yi , Fu Bin He
Published: August 2014

This paper presented the scenario of the IDCTMV Human-Machine Ergonomics test system with the programming idea of the modularization. Based on LabVIEW, the IDCTMV simulated test software and subjective evaluation software were designed and developed. The subjective evaluation results and operation performance data including the reaction time of crews, the rate of errors, and the rate of over reports were tested by the simulation of the integrated display and control terminal for the typical operation procedure, which solved the problems of lacking test methods for the study of the IDCTMV Human-Machine Ergonomics.
Design of the Target Tracking Process Based on DM648
Authors: Yao Guang Yu , Song Lu
Published: August 2014

Compared with the traditional vehicle detector, the vehicle detection and tracking based on video image processing and the technique of visual target has fast processing speed, and convenient installation and maintenance, and low cost, wide range of monitoring, can obtain more kinds of traffic parameters, and many other advantages, has become more and more widely used in intelligent transportation system (ITS) in recent years.
This paper introduces a method for real-time detection, target tracking in traffic image sequences from a fixed single camera. The System adopts TMS320DM648 as the core processor to implement the real-time target tracking algorithms, mainly complete the effective information real-time display of the software and hardware design of target tracking system, application flexibility, small volume, stable and reliable, it is very practical in practice.
Development of Experimental Apparatus for Diaphragm Gas Meter in the Limiting Temperature Conditions
Authors: Huang Zhen Wei , Guo Gang , Ge Shen , Shen Wen Xin
Published: August 2014

This paper presents the basic architecture and working principle of diaphragm gas meter experimental apparatus in the limiting temperature conditions. A double-standard test method with critical flow nozzle as main standard and roots flow meter as reference standard has been proposed. Indicating error and pressure loss characteristic at different temperatures are obtained by experimental research on the metrological characteristics of diaphragm gas meters (G2.5) which are produced by numerous corporations under the condition of non-reference temperature. The experimental results show that the indicating value of diaphragm gas meters under high temperatures is basically accurate, but the metrological property is a little patchy in terms of quality at low temperatures. The maximum indication error of part measuring instruments is up to 16%.
Research on Feasibility and Applicability of Delamination Localization Methods for Composite Laminated Beams
Authors: Ma Hang , Lu Ping , Jiang Tao , Shi Sheng Feng , Wei Jian Bin , Duan Jing Bo
Published: August 2014

The feasibility and applicability of delamination damages localization methods with various defined damage indexes for the damaged composite laminated beam were studied. The results indicate that, for the modal strain energy method, damage indexes defined by strain energy difference are more effective to locate the delamination damage than that of strain energy ratio. For energy response method, damage index defined by the second difference can effectively locate the delamination damage in the composite laminated beams.
Empirical Likelihood Based Testing for Polynomial Regression Models
Authors: Zhao Pei Xin
Published: August 2014

Based on the empirical likelihood method, a testing procedure is proposed for polynomial regression models. Some simulations and a real data analysis are undertaken to investigate the power of the empirical likelihood based testing method.
Finite Element Analysis of Capacitance Sensor
Authors: Zhou Fei , Lin Guo Min , Shang Miao , Zhang Wen Guang
Published: August 2014

Capacitive sensor is a kind of parameter type sensor that capacitance is measured is converted to capacitance change. It is widely used in pressure, liquid level, displacement and other tests. In this article, the development status of capacitance sensor is showed; the working principle of capacitive sensor was introduced; through the method of grid subdivision, loading and solving of boundary conditions and the finite element post-processing, etc., the finite element analysis of capacitance sensor is complete, it has important guiding significance for capacitance sensor application research.
Improvement of Stable Operation Ability for Large-Scale Wind Power System Based on VSC-HVDC Technology
Authors: Rao Cheng Cheng , Wang Hai Yun , Wang Wei Qing
Published: August 2014

Rigorous transmission technology is important when large-scale wind farm is connected to the power grid. Hence, a power transmission topological framework based on VSC-HVDC is proposed. The mathematical model is built in the dq synchronous frame, and the related direct current control strategy of VSC converters are designed. The doubly fed induction generator wind farm with VSC-HVDC system are modelled in DIgSILENT/PowerFactory. Ultimately, the conditions of the short-circuit fault at the receiving-end VSC AC bus is simulated. The control scheme is proved to be effective.
Many High Performance Motion Control of Linear Motor Drive System Research
Authors: Li Chuan Jun , Liang Qiu Juan
Published: August 2014

To realize the movement of high-speed, high-precision positioning, satisfy the requirement of the numerical control processing equipment and high precision, based on high performance motion control platform driven by linear motor, an optimized for high performance XY table structure design, the broadband modal coupling modeling and simulation movement, dynamics analysis and controller design, such as content, high performance motion platform organization structure optimization, the global optimization of mechanical system and electrical system. Eventually for high performance sports mechanism design, modeling method and system control method provides the key techniques such as solution, and to develop more high performance motion control of linear motor driven platform prototype machines.
New Method of Angle Error Measurement in Angular Artifacts Using Minimum Zone Flatness Plane
Authors: Khan Muhammad Ilyas , Ma Shu Yuan
Published: August 2014

Angle error measurement is one of the important icons in orientation tolerances. This paper presents new method of angle error measurement in angular artifacts based on flatness planes. The flatness plane has been developed based on minimum zone method. The method is simple and no expensive equipments like interferometer or autocollimator and index table are required. One prism, having four sides has been presented as an example to show the effectiveness of the proposed method. Results indicate that new method is very effective to measure angle error in angular artifacts.
Numerical Investigation of Flexible Clamp Multi-Point Stretch Forming
Authors: Peng He Li , Li Zhong Quan , Cheng Qun Lin , Yuan Yong , Li Ming Zhe
Published: August 2014

The finite element model of flexible clamp multi-point stretch forming (FCMPSF) was set up, and extensive contradistinctive analysis of forming limit and forming accuracy between FCMPSF and RCMPSF were done. The results show that under the same forming conditions, spherical part formed by FCMPSF is not easy to fracturing, dimpling and springback, and is easy to fit the die. The reason for this was analysed. The non-fracturing limited graph, the non-dimpling limited diagram and the average springback value of spherical parts formed by FCMPSF and RCMPSF were obtained. Finally, the forming experiment and error analysis of spherical part formed by FCMPSF were done, the results indicate that 3D parts with large transversal curvature can be shaped by FCMPSF and the forming quality was guaranteed.
Developing of High-Power Sandwich Type Piezoelectric Transducer Automatic Assembly Machine
Authors: Zhang Yun Dian , Wang Peng
Published: August 2014

This paper discusses the basic parts of the assembly machine,calculate the relationship between torque and axial force,torque and voltage of the piezoelectric transducer.It also analysis the mechanical structure of mechanical.It introduces the motor’s control method .the successful assembly machine is used to assemble the piezoelectric transducer,the experiment indicates that with the increase of voltage, the resonance frequency increases,the impedance is on the decline,the static capacitance remains unchanged basically.And comparison of the assembled and the first assembly piezoelectric transducer,the latter has better performance.
Design and Research of Ignition System for Small Gasoline Engine Electronic Control
Authors: Li Jie Hui , Ding Le Sheng , Shi Guo Wei , Liu Da Wei , Zhong Guang Yao
Published: August 2014

In order to promote development and propose effective method for small electronically controlled engine system, a electronically controlled ignition system was designed in this paper. Freescale MC9S12XEP100 is chosen as MCU, control strategy was defined with MC33812 to pre-drive ignition. At last, 168F engine is adopted as original machine, optimum ignition advance angle was calibrated, related correction paraments and formulas were defined. Bench experiments results shows that power performance, fuel consumption and emission performance are promoted and improved significantly after the designed ignition system was adopted.
Car Wireless Charging Device
Authors: Lei Wen , Xiong Xiao Ying , Wang Wei
Published: August 2014

this device designed a wireless power supply based on IAP15F2K61S2 single-chip microcomputer control device, the device using the theory of electromagnetic resonance to simulate future wireless charging way; Is application of a wireless power supply technology in an attempt to relieve the energy crisis. System to IAP15F2K61S2 microcontroller as the control core, high power wireless transmission is realized by using xkt409 electricity. Charging status can be displayed on the LCD screen, wireless charging model to simulate the future car.
Position and Attitude Tracking Control Law Design Using Geometric Algebra
Authors: Wu Di Min , Li Zhen Jing , Li Bin , Chen Yu Xia , Li Li
Published: August 2014

A position and attitude tracking control law is developed using geometric algebra (GA). The rigid body motion can be represented by the screw versor (or motor) in GA. Using the kinematics of the motor, the tracking control law of the rigid body motion can be formulated similar to the proportional control law. This paper provides a GA-based position and attitude tracking control law by using the negative feedback of the motor logarithm. The stability of the control law is validated by the numerical simulation.
A Study on Regenerative Braking Control Strategy for an Extended-Range Electric Vehicle
Authors: Niu Ji Gao , Xu Chun Hua
Published: August 2014

In order to further improve the baking energy recovery rate of extended-range electric vehicle (E-REV), thus to extend driving distance, a high efficiency regenerative braking control strategy for E-REV was proposed. Based on the co-simulation platform with AVL-Cruise and Simulink, a dynamic model for E-REV was set up and simulation calculations on hybrid motor-mechanical regenerative braking were performed. The simulation results with typical driving cycles illustrate that the friction braking force and the regenerative braking force could be well integrated, braking energy recovery efficiency was high, and the proposed control strategy of regenerative braking in the paper is effective.
One Automatic Control Equipment IETM Making Research Based on GJB6600
Authors: Duan Dao Ju , Qiu Lei , Zhu Zhong Tao , Wang Da Peng , Xie Rong Yue
Published: August 2014

The process and design scheme of IETM system based on GJB6600 standard was introduced in this paper, and automatic control equipment maintenance was studied with IETM data description and storage technology,the data description scheme, data storage and query framework were established, realized the conversion from XML data to relational database, and the small IETM browsing prototype was developed. This project had important significance to shorten the maintenance time and improve the efficiency of equipment protection.
A Design and Research on GMM Precision Flow Pump
Authors: Liu De Hui , Liu Li Wen , Tang Gang , Wen Hong Min , Lu Quan Guo
Published: August 2014

A new type of the precision flow pump is developed with the giant magnetostrictive materials as the driving source. Experiment has been conducted to test the performance of the pump with designed key components. The pump as the preloading mechanism, adopting an elastomer instead of a spring, not only simplifies the structure, but also improves the performance of the pump. A design is also made to some key components such as the giant magnetostrictive rod and driving coil. The result of experiment shows that the pump flow resolution records 1 ml/min~400ml/min and the maximum output pressure 0.6 MPa, which means the performance of this kind of pump is superior to ordinary diaphragm pumps.
Analysis on Aeroengine Digital Electronic Control
Authors: Jiang Xiao Lian , Wei Xiu Ling , Lv Xue Yan
Published: August 2014

Control technology of aeroengine has made remarkable development in recent 20 years. In order to meet the needs of high performance, high precision propulsion system control, based on computer technology, microelectronic technology and control theory, the control technology is from traditional hydraulic mechanical control to digital electronic control. Digital electronic control has been a huge success from limited function to the full authority control and from the development test to practical application. In the future it will have more widely application and development in the field of military and civilian aircraft control. This paper mainly discusses the full authority digital electronic control. It shows that the digital electronic engine control has wide application prospect and high application value.
Simulation on the Energy Saving Control Model of Large-Scale Power Control
Authors: Fan Rui Xiang , Xia Wei , Liu Bin
Published: August 2014

During the large transformers operation, the proportion of the non-essential energy consumption is higher. In order to reduce the energy consumption in power control process, a new design method of energy-saving control in large-scale power control process based on adaptive linear genetic algorithms. Loss model of power control is established firstly. Based on the relevant data of the model, energy-saving control in large-scale power control process can be achieved. Experimental results show that the improved algorithm can effectively reduce the energy consumption in large-scale power control system, and meet the actual demand of power control.
The Research and Simulation of PID Algorithm Optimization for Concrete Mixing
Authors: Liu Mi
Published: August 2014

In order to fix the defects of the inaccurate control parameters in concrete intelligent mixing, this paper proposes a concrete mixing parameter control method based on fuzzy neural network PID control algorithm. The control method mainly includes two parts-control parameter calculation and mixing data feedback. According to the control parameter calculation, the proposed method is capable of calculating the control parameters required to control the concrete mixing. The industrial concrete mixing condition can be feedback to the control end via data feedback method. The control parameters can be adjusted according to the feedback data to accurately control the concrete mixing. The experimental results illustrate the proposed algorithm can effectively increase the control accuracy with satisfactory performance.
Technology Research Vehicle Braking Stability Control
Authors: Liu Ya Rong
Published: August 2014

In this paper, the stability of the car when braking, the establishment of a complete vehicle dynamics model to analyze the main causes and influencing factors of automobile brake instability. Select the vehicle yaw rate and sideslip angle as the control variable, meaning the use of certain applications of fuzzy control theory, the ESP fuzzy controller, and control strategy simulation with.
Research on Wheeled Robot Path Tracking Based on Fuzzy Neural Network
Authors: Yang Shuo , Zhang Bo Quan , Jia Mao Ying
Published: August 2014

To solve the problem that wheeled robot in the path tracking is prone to slip or roll over at a sharp curve, structure of the wheeled robot and its path tracking features are analyzed, and a new Fuzzy-Neural Network (FNN) based path tracking method of two-stage (route and speed) control is proposed. In the first stage, a FNN controller determines the robot’s turning radius by processing robot’s pose information. In the second stage, the secondary controller adjusts angular and linear velocities by taking advantage of the turning radius and condition of the path ahead. The experiments show that the controlled robot can track the planned path accurately and robustly when it runs at high speed; the process of path tracking is stable and no slipping and rolling occur.
Application of Executable UML Technology for Verification of Armored Vehicle Information System Model
Authors: Lu Fa , Yang Ke Wei , Zhang Shu Teng , Zhan Guo Xiong
Published: August 2014

Executable UML is one of development directions of Model Driven Architecture (MDA). Executable UML is committed to the automatic code generation from UML model. The simulation and testing of the model is realized either by compiling the model or by executing the code it generate. For solving the problem that how to confirm the correctness of executable model, this paper researches the mechanism of executable UML model and explore a verification method based on executable UML. Finally, researches how to apply the executable mechanism of Executable UML to the design and verification of Armored Vehicle Information System (AVIS) through an imaginary combat mission scenario.
The Design of Rudder System Simulation Device
Authors: Zhang Zi Lin , Liu Yang , Liu Dong Di , Wang Hong Bo
Published: August 2014

This paper designs a ship rudder system simulation device in order to serve the research of ship control better with the proportion of a real marine hydraulic rudder system, which can complete closed-loop experiments in the lab with the steering system. The rudder system simulation device mainly includes two parts, electric control system which uses PLC as core control unit, hydraulic system, and it can achieve both manual and automatic operation control mode.
Analysis of Shock Resistance on GWC6066 Marine Gearbox
Authors: Liu Wen , Lin Teng Jiao , He Ze Yin
Published: August 2014

The dynamic finite element model of entire gearbox, including gears, shafts, bearings and gearbox housing was established by using the truss element, spring element and tetrahedral element at first. Then the shock spectrum of GWC6066 gearbox was gotten according to German specification BV043/85. After the shock spectrum converted into equivalent time-domain acceleration curve, the vibration velocity, vibration acceleration and dynamic stress of GWC6066 gearbox under the double half-sine acceleration shock excitation were simulated. At last, the shock resistance performance of gearbox was analyzed combining with the strength criterion.
A Research on Thermostatic Control Method of Intelligent Sand Casting and Gas Forming Tester
Authors: Zhu Li Feng , Wang Kai , Kang Zhan , Li Shan
Published: August 2014

The temperature control model of an intelligent sand casting and gas forming tester is introduced in this paper. The thermostatic fuzzy control of the tester is simulated by the fuzzy control kit in Matlab. The result of the simulation indicates that the control method of the research has a intelligentized degree, which is more precise than conventional control method.
Adaptive Controller Design for SISO Switched Nonlinear Systems with Linear Uncertain Parameters
Authors: Zong Xiao Ping , Zhang Miao , Wang Pei Guang
Published: August 2014

This paper presents that single input single output (SISO) switched nonlinear system tracks the variation of the state error to approach the excepted values by using model reference adaptive control (MRAC) method. In order to improve the adaptive control for nonlinear systems by Using Narendra method and dividing the system into two parts: linear and nonlinear parts. The controllers are designed to guarantee that the systems are closed to the model reference system with the arbitrary switching signal. Switching systems can ensure choose the best controller so that can enhance the performance. The adaptive laws are given that are based on a class of feedback single input single output nonlinear uncertain systems which can switch feedback linear standard models. The adaptive laws are different from the classic adaptive laws, because they vary with different switching signals until the best matching one comes. Simulation results show that the proposed method is effective.
The Motion Simulation of Small Robot Walking Mechanism
Authors: Zhao Chang Long
Published: August 2014

In this paper, according to the characteristics of mould and polishing machining of freeform surface, we used the small robot for lapping and processing method. The 3d modeling of the robot is modeled by CATIA, and carried out the kinematical analysis on the center of mass in driving wheel, and the movement simulation of whole body is carried out by ADMAS. The results of simulation show that using small robots for machining of die free-form surface is feasible.
A Novel Computing Method of Spatial Arc Trajectories of Manipulator
Authors: Ye Pei Chang , Jia Qing Xuan , Chen Gang , Sun Han Xu
Published: August 2014

This paper presents a novel computing method of spatial arc to solve the problem of large amount of calculation in the traditional spatial arc trajectories plan. First, position planning of spatial arc is computed based on three given points in Cartesian space. Second, axis-angle relationships method is used for the orientation planning. Finally, simulation on a 7-DOF manipulator clearly demonstrates the effectiveness of the proposed method.
Application Research of Automatic Aiming Control of Certain Equipment
Authors: Qiu Rui Xue , Sun Yi Zhe , Du Jun , Zhang Qiang
Published: August 2014

Machine is adopted to replace human eyes to complete measurement and judgments. Target image is identified by computer and insert into automatic aiming control process to complete the shooting direction computing and automatic position aiming process.
Design and Implementation of Intelligent Personnel Management System
Authors: Xu Xin Jun , Yue Liu , Zhu Kai
Published: August 2014

In order to resolve the problem of security monitoring and management for the elderly, children and employees of enterprises, and meet the application needs of protecting the information of stolen mobile phones, so designed an intelligent personnel management system based on Android mobile phone. The monitoring side and the monitored side both used smart phones and transferred data to each other via the server in system. This system was available in real-time location query, historical route reviewing, distress alerting emergency, security protection of privacy information and other functions. The simulated and practical test shows that the system runs in good condition and could provide real-time and effective information for related personnel, so it has a pretty promising.
Auto Parts Welding Line Based on Failsafe PLC
Authors: Sun Tao , Meng Ting Ting
Published: August 2014

Failsafe control system can improve the safety of personal and environment. We used failsafe PLC and PROFIBUS-DP field bus to structure the car rear bumper welding line, introduce the hardware configuration and programming.