bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Fiber Distributed Busway Temperature Monitoring System
Authors: Qin Yun
Published: May 2013

The reliability of busway in high current state is closely related to its temperature. So effectively monitoring temperature is the key issue to ensure the busway work safely. Because of the constraints such as high voltage and strong electromagnetic fields, traditional temperature measurement system can not meet the requirements. A distributed busway temperature monitoring system is designed in this paper based on the temperature effect of fiber Raman scattering signal. Arithmetic average, wavelet noise reduction and low-pass filter combination of data processing is used to overcome the very low SNR. Experiments show that the system can measure the temperature of 1km busway effectively. Temperature resolution can achieve 3°C.
Failure Diagnosis of Large Cooling Tower Fan Based on FFT and EMD Analysis Method
Authors: Chen Jian Ping , Huo Li Xin , Li Hai Jun
Published: May 2013

Large cooling tower fan mainly used in petroleum, chemical, electric power industry, carries industrial water circulating cooling function and its operational status directly affects the industrial production. The blades are the important parts of the fan. The modal analysis is used to find the distribution of blade vibration frequency, and then the acquisition and analysis of vibration parameters of running large cooling tower fan blades are done using the EMD methods. Finally, compare with the modal analysis to find out safety hazards of fan blades. This method can eliminate the failures of the cooling tower fan blades, shorten the repair cycle, ensure the smooth production of the enterprise and improve economic efficiency.
The Corrosion Acoustic Emission Source Location Technique and its New Trend
Authors: Bi Hai Sheng , Li Zi Li , Cheng Yuan Peng , Isaac Isaac , Wang Jun
Published: May 2013

The corrosion acoustic emission (AE) source location is one of the main purposes of acoustic emission testing (AET), corrosion detection and location can guarantee the safety and integrity of pipeline, storage tank and other equipment in the petrochemical industry. The computed source location and zonal location methods are reviewed in this paper, and also new source location method based on modal acoustic emission (MAE) is introduced and this new method will be more widely used in the field of corrosion detection in future.
Measurement of Thermal Conductivity of Liquid Based on Transient Double-Hot Wire Technique
Authors: Shao Zhuang , He Zhi Xia , Wang Ze Peng , Zhang Liang
Published: May 2013

A new experimental apparatus has been developed for measuring the thermal conductivity of liquid by the two transient hot-wire method, which is based on the theory of one-dimensional unsteady heat conduction in infinite medium. The glass tubes, the heating line source and temperature measurement devices are designed in this experiment. As the temperature controller, low-temperature bath provides a constant water bath environment and current calibrator is the power source. Wheatstone bridge is used to test the relation between the temperature changes and resistance. Data acquisition and control unit is data acquisition devices of the Wheatstone bridge. As the temperature coefficient of platinum wire resistance is calibrated. It can be used to measure 32 groups of data from 10°C to 40°C at the every 10°C according to the experimental steps.
Structure Transient Response Analysis of Coal Mine Life-Saving Capsule under Blast Shock Condition
Authors: Mao Xiao Hui
Published: May 2013

Targeting at insufficient data for simulated blast shock of life saving capsule in coal mine which affects its development and design so that structural transient response analysis optimization was performed to analyze strain-stress, shock-produced deformation and spring-back of the new protective crust with compound structure under shock wave. ADINA, a general-purpose FEA program, is chosen to emulate the dynamic response of the protective structure under blasting stress. The analysis results were compared with the dynamic response results of the single-layer protective crust. The result shows that steel defensive structure with aluminum foam buffer behind general steel has a good attenuation characteristic for peak pressure of blast wave. The composite structure with flexible material layer can protect the core of the lifesaving system better from the blast. The simulation experimental environment can be established and reference data can be provided for the design of a life-saving ball system by using numerical analysis methods.
Interharmonic Analysis Algorithm Based on TLS-ESPRIT and Prony's Method
Authors: Chen Rui , Yao Ying
Published: May 2013

In order to solve the traditional Prony's method faults that is vulnerable to the impact of the noise, a interharmonic analysis algorithm that is combined total least squares-estimation of signal parameters via rotational invariance technique (TLS-ESPRIT) with Prony's method is used in this paper. The numbers and frequencies of harmonic and interharmonic in the power network signals are estimated by TLS-ESPRIT. Then their amplitudes and phases were analyzed by the Prony's method. After simulation, with this algorithm the parameters of harmonic and interharmonic can be accurately estimated in low SNR. It needn’t synchronous sampl data and has high frequency resolution. this algorithm overcomes the susceptible defect of the Prony's method by noise. The results of simulation prove that in the absence of synchronous sampling data, low SNR, the use of this algorithm, high frequency resolution, can accurately estimate the parameters of harmonic and interharmonic.
Fault Diagnosability of Momentum Wheel Based on Bayesian Network
Authors: Xie Si Yun , Peng Xia Fu
Published: May 2013

Momentum wheel is a key actuator of the attitude controlling system of the satellite. Thus, it is very meaningful to accomplish its fault diagnosability to maintain the working order of the satellite. Therefore, the operator must be timely to judge change-trend in momentum wheel, figure out the reasons for changing conditions and adjust it promptly. However, the working environment of the momentum wheel is very complicated, targeting on the problems of complex fault mechanisms and uncertainty between fault type and fault symptoms, this paper puts forward a Bayesian network structure based on the FMEA (Failure Modes and Effects Analysis) Bayesian diagnostic network. This method will provide theoretical basis for momentum wheel fault diagnosis and the simulation shows it can detect the fault by detecting multi-fault variables effectively.
Fault Diagnosis of Steam Turbine Unit for Performance Monitoring Based on Versatile Logical Form
Authors: Kan Wei Min , Hu Nian Su , Li Min , Yang Wen
Published: May 2013

Considering the characteristic of fault diagnosis of large steam turbine unit for performance monitoring, a method for performance monitoring and fault diagnosis was designed based on versatile logical form. The logical form was proposed according to fault tree analysis. The diagnostic program can implement the entire process of fault analysis and diagnosis depending on the logical form. This method has characteristics of easy operation and good universality. Design idea and working process of the method were introduced by means of low feedwater temperature.
Online Compositional Analysis of Molten Steel by Laser-Induced Breakdown Spectroscopy
Authors: Sun Lan Xiang , Xin Yong , Cong Zhi Bo , Li Yang , Qi Li Feng
Published: May 2013

Quick analysis of chemical composition is very important for process control and quality assessment in metallurgical industry, especially in steelmaking process. A prototype equipment for online analysis of molten steel composition was developed based on laser-induced breakdown spectroscopy. The effect of steel temperature on different spectral line intensities was studied, and calibration curves of Cr, Ni, Si and Mn were built. Results show that most line intensities are greatly enhanced when steel temperature is higher than 1200°C, and the detection capability of minor elements in molten steel is higher than in normal solid steel. Line intensity, however, is easier saturated in molten steel, leading to narrow linear ranges of calibration curves for molten steel. Furthermore, for online analysis, by using a median filter the abnormal points were inhibited and the changing compositional concentrations were successfully monitored.
Manufacture of Online Analyzer of Water in Oil
Authors: Liu Hai Jiang
Published: May 2013

Hardware and software design of high-precision real-time analyzer of water in oil that focuses on AT89C52 SCM is introduced. ICL7135A / D conversion is applied to realize high-precision data acquisition in the analog signal acquisition channels, method of true and false load is adopted to inhibit the interference signal in data acquisition department and data transmission channel, and the stability of data is improved through the operation of software. Digital tube is applied to display the measured value, an alarm signal would be sent out if the value exceeds the set value, and at the same time the control signal of the start of oil-water separation equipment would be given. The analyzer is constituted by SCM, shortwave emitter, data processing section, result display and some other components, the system structure is simple and reliable, and the measuring accuracy is high.
Driving Techniques for Micro Gear Measuring Instrument
Authors: Zhang Yuan Liang , Zhou Zhi Min , Jiang Peng Sen , Gao Yan
Published: May 2013

Micro gears are applied in an increasing quantity in many applications. Therefore, precise measurements are of growing importance to ensure their quality. This paper studies the electronic generative and automatic indexing measurement system in a micro gear (with a module less than 0.2mm) measuring instrument, and develops a loop proportioned driving approach and a stage-error compensation technique. The approach and the technique have been successfully applied in the micro gear measuring instrument developed by the authors. The experiment shows that the application of the approach and the technique greatly reduces the cost of measuring instrument, with simple control and reliable operation.
Design and Implementation of Linkage Control Module in the Automatic Fire Alarm System
Authors: Chen Xiao Lei
Published: May 2013

This paper describes the structure and the modules of the automatic fire alarm system. On this basis, it gave an effective and reasonable way to divide the fire and fire-fighting equipment for automatic fire alarm system controller linkage control module. Still it designed the linkage relationship, the linkage input and database storage linkage output to realize this linkage control module.
Design of Monitoring System for Electric Vehicle Battery Controller
Authors: Wang Dai Zhuang , Yi Peng , Li Yun Peng
Published: May 2013

Designed a monitoring system for Electric Vehicle battery controller to calibrate the parameters and detect the faults. The Monitoring System consists of host monitoring software and USB (Universal Serial Bus) 2.0 interface module. Programmed by C#, host monitoring software provides a UI (User Interface) to display the status of the battery controller and send the command to it. USB 2.0 interface module uses the chip Cy7C68013A to transfer data between the host monitoring software and battery controller. Tests showed that the monitoring system supported hot Plug and Play, high speed mode and easy portability. This system greatly reduces the user operating difficult, and improves the battery efficiency.
Design of Combustible Gas Detection System Using Wireless Transmission Technology
Authors: Zhen Li Ping , Cao Hai Yan
Published: May 2013

The detection device of combustible gas are designed in the presented work,using wireless transceiver and GSM network.The system realize the wireless transmission of the gas concentration,and also can send alarm information to user’s mobile when an exception occurs. The system consists of two parts: a master and slave. The function of the slave is to collect data, process data and transffer the data to the master. The task of the master is to receive data and display it by LED. The signal acquisition is completed by sensor TGS813 and A/D converter TLC2543. The wireless transmission is achieved through wireless transceiver nRF905. Since the accuracy of the sensor is affected by the environment, using DS18B20 to achieve temperature compensation. And with wireless communication module TC35i and GSM network platform, we can send the alarm information to user’s mobile promptly.
Research of Rolling Bearing Fault Feature Extraction Based on EMD and Choi-Williams
Authors: Wei Xing Chun , Tang Yu Lin , Chen Tao
Published: May 2013

Aiming at rolling bearing fault signal of the non stationary feature, Apply a new method to the rolling bearing vibration signal of feature extraction, which is combined the Empirical Mode Decomposition (EMD) and the Choi-Williams distribution. Firstly, original signals were decomposed into a series of intrinsic mode functions (IMF) of different scales. To the decomposed each IMF component for Choi-Williams time-frequency analysis, Then take the linear superposition, finally obtained the rolling bearing vibration signal of Choi-Williams distribution. After the analyses of the rolling bearing inner ring, outer ring and rolling element fault signal ,the results show that this method can effectively suppress the frequency aliasing and interference caused by cross terms. And be able to accurately extract the fault frequency of the bearing inner ring, outer ring and rolling element, lay the foundation for the subsequent rolling bearing state recognition.
Design and Research on the Cigarette Paper Smoldering Rate of PRS-2 Tester
Authors: Huang Wei Dong , Yu Yong Min
Published: May 2013

The measuring body of PRS-2 cigarette paper smoldering rate tester is industrial vision sensors P4E1.3, it could determine and identify the burning of the cigarette paper by using the advanced computer image processing techniques.The vision sensor can detection to 10,000 times per minute when the image resolution is 1.3 million pixels-accurate, it simultaneously monitors the 5 cigarette paper, and can ensure that the scanning frequency of each cigarette paper is not lower than 100 Hz. In the case of deducting the necessary analysis and calculation time, it can guarantee that the timing accuracy is no less than 0.1s. The instrument is able of detecting the serrated depth of the burned cigarette paper line and excludes the misjudgment which caused by human factors,so it could achieve control, data analysis, save and print independently.
A Novel Genetic-Algorithm-Based AMC Structure
Authors: Jiang Shui Qiao , Gao Qiang
Published: May 2013

In this paper, a novel genetic-algorithm-based AMC structure, which is made up of high-impedance frequency selective surface, is introduced. The aperture-coupled microstrip antenna using this structure has 10dB less back radiation and 3~4dB more gains than a conventional one. This structure has important reference value to the manufacture of antenna. Practical antenna is fabricated, and the measured results basically agree with the simulated well.
Analysis of Symbolic Time Series of DC-DC Converter Based on Topological Conjugacy
Authors: Xu Hong Mei , Jin Yong Gao , Zhang Li Jun
Published: May 2013

The converter topologically conjugates with its symbolic time series by mathematical demonstration, the time series of converter are translated into symbolic series based on return map. This study takes one-order DCM Boost as examples, time irreversibility and block entropy of different word lengths in DC-DC converters are analyzed by using coarse-grained discretization. Reasonable coding method of symbolic series is determined from statistics perspective, which can provide theory basis for digging into nonlinear characteristic and chaos in DC-DC converter.
The Application and Stimulation Research of PIC Single Chip in Waveform Signal Generator
Authors: Yi Gao
Published: May 2013

This article chooses PIC18F4620 as its key device and designs a waveform signal generator. It can improve the function of the waveform signal generator in hand. A lot of advantages are included in it, such as simple circuit, simple regulation and convenience maintenance. It can completely be used in industrial instrumentation and automatic testing area.
A Experiment Study of De-Noising to Reduce the Effect of Artificial Light Interferences for Visible Light Communications Using White-LEDs
Authors: Cheng Rong , Yan Xiao Ming
Published: May 2013

The optical power penalty (OPP) due to the artificial light interference (ALI) can influence the performance of the Visible Light Communications (VLC) system significantly. In this paper, a de-noising scheme based on band-pass filter is achieved in a voice-transmission VLC experiment system and it was proved a effective scheme to improve the quality of the transmission significantly
HILS Test Bench Based on Open and close Loop Test for Air ABS System
Authors: Zheng Hong Yu , Zong Chang Fu , Zhao Wei Qiang , Chen Liang
Published: May 2013

Anti-lock braking systems (ABS) is a type of mechanical electrical system in which are used to prevent wheel locking of vehicle as a result of excessive actuation of the service braking system, especially on slippery roads. According to electric control unit (ECU) research requirement of ABS system, this paper introduce a hardware-in-the-loop simulation (HILS) test bench, which can through open and close loop test methods accomplish calibration the parameters of the inside ECU, performance evaluation and fault diagnosis and tolerance test, not only can shorten the development cycle, but also save research and development costs of ECU.
A Novel Flux-Weakening Structure of High-Speed Permanent Magnet Motor Based on the Soft Ferrite
Authors: Wang Xing Hua , Lin Xue Yuan , Li Ming Hui , Chen Yu , Zhang Cheng Hui
Published: May 2013

Soft ferrite has the characteristics of high permeability, high resistivity, low loss. Based on this, a new flux-weakening structure of high-speed permanent magnet motor was presented. The structure relies on changing the saturation of soft magnetic ferrite to change the equivalent magnetic resistance of permanent magnet magnetic circuit in the motor, so the main flux of the permanent magnet motor can be reduced. By the 3D Finite Element analyses, the magnetic field distribution characters in the air gap can be pointed out. The analysis results prove the flux-weakening method is presented in this paper is correct and feasible. It can provide a practical flux-weakening method of the high-speed PM motor.
Non-Sinusoidal SVPWM for Five-Phase Inverter Based on MMF Equivalence
Authors: Li Bin , Li Lu Bo , Li Gui Dan
Published: May 2013

The multi-phase inverter modulation and control method is a hotspot of multiphase systems. There is no general space vector modulation available due to the inherent difficulty in synthesizing more than one independent space vector simultaneously in different d-p planes. This paper established the distribution model of five-phase inverter space vector from a novel perspective of magnetic motive force (MMF) equivalence. And then a multi-dimensional SVPMW method applicable to the non-sinusoidal voltage output was proposed based on the obtained space vector distribution laws. The proposed multi-dimensional SVPWM method effectively improves the fundamental modulation range and is suitable for five-phase inverter non-sinusoidal modulation.
Design and Simulation of a MEMS Torsional Micromirror
Authors: Song Yi Bo , Yan Zhi Gang
Published: May 2013

In this paper, we designed an electrostatic driving MEMS torsional micromirror. The operation principle of the torsional micromirror is analyzed. Based on the analysis, a set of optimized design parameters of the micromirror is suggested. The design optimization of the micromirror is also performed with MathCAD software. At last an ANSYS simulation is achieved in the paper, which proves that the micromirror can provide a maximum workable torsional angle rotation of ±0.55º with corresponding driving voltage of 17.5V.
Design of Small Power Servo Brushless DC Motor Driver
Authors: Wang Jian Yu
Published: May 2013

Based on the integrated circuits LM629 and MC33035, a design method of small power servo brushless DC motor (BLDC) driver is presented, and the main control circuit, the driving of power circuits and the structure of software are introduced yet in the paper. This driver can communicate externally with RS485 bus and accomplish speed servo and position servo with the scheduled parameters. The experiment shows that the driver provides good stability and precision when driving the 18V 80W brushless DC motor.
Rapid Prototyping for the Vehicle Control Unit of a Full Drive-by-Wire Electric Vehicle
Authors: Song Pan , Zong Chang Fu , Zheng Hong Yu , He Lei
Published: May 2013

This paper presents a full drive-by-wire vehicle named Urban Future Electric Vehicle (UFEV) and introduces the detailed design of its vehicle control unit (VCU). The LabVIEW and PXI solution is selected for the rapid prototyping of VCU, which also acts as a real-time test, measurement and control platform for UFEV. To address its unique features, the design and transition of specific driving modes are introduced. Experiments show that omnidirectional moving can be implemented accurately and reliably by using the proposed design.
Design and Simulation of Attitude Determination and Control Subsystem of CubeSat Using Extended Kalman Filtering and Linear Quadratic Gain Controller
Authors: Han Xiao , Yang Xiao Jun , Abbas Naqvi Najam
Published: May 2013

This paper describes an integral scheme of the design and simulation of the Attitude Determination and Control Subsystem (ADCS) of CubeSat. CubeSat is an educational low-cost, cube-shaped Pico spacecraft. Attitude Determination (AD) is the problem of expressing the orientation of a spacecraft with respect to a given coordinate system. Three axis magneto-resistive digital magnetometer is selected as an attitude sensor. The International Geomagnetic Reference Field (IGRF) is used as reference for magnetometer to obtain attitude information. An enhanced orbit estimate/propagator is implemented to provide position information to IGRF model. Satellite environmental torque is modeled along with satellite kinematics and dynamics. Attitude estimation is done using Extended Kalman Filter (EKF) while the magnetic coils are used as actuators. Attitude Control is applied using Linear Quadratic Regulation (LQR) Controller. The designed ADCS is implemented in Matlab/Simulink.
A New Power Train for Electric Hybrid Vehicle
Authors: Yang Zhen Lin , Wang Ren Guang , Zhang Lin Tao , Yu Chao , Shi Guang Kui
Published: May 2013

A new kind of power train was developed for electric hybrid vehicle, which is mainly consisted of engine, two generator/motors, two sets of planetary gear, power mode selection mechanism. The power mode selection mechanism has three positions, it make the power train have three different operation modes which are pure electric driving mode, pure engine driving mode and hybrid driving mode. Different operation mode is corresponding to different vehicle load conditions for economy and dynamics requirements.
Numerical Analysis of Vortex Shedding Behavior of Piezoelectric Microgenerator from Dynamic Airflow-Induced Vibration
Authors: Li Fei , Chen He Juan
Published: May 2013

Computational fluid dynamics (CFD) method is applied to analyze airflow field of acoustic-induced vibration piezoelectric generator. In this paper, numerical simulation has been performed for the unsteady flow field of nozzle vortex shedding with inlet and outlet boundary conditions. Distribution of velocity, pressure and vortices field has been calculated and analyzed in the process of vortex shedding in order to provide a reference for optimizing source frequency. The result shows that jetting initially shows vortex shedding when adopting the nozzle of variable flow tube structure, which is an equal section flow tube with necking cross section flow tube. The analysis method of this paper is laid the foundation for the design of power airflow acoustic source generator.
Accuracy Analysis of 3-UPU Translational Parallel Robot Mechanism
Authors: Sun Shu Hua
Published: May 2013

According to the inverse solutions of 3-UPU translational parallel robot mechanisms, in which both the base and the mobile platform are triangle and similar to each other, the accuracy model of parallel robot mechanisms is established by the differentiation of the kinematic. The effects of length error of driving poles, structure size change and posture change on the accuracy of robot are studied by simulations,which provided the foundation for practical error compensating and controlling of the mechanism.
The Tensile Test Study of the Flange Repaired Reinforcement Laminates
Authors: Zheng Nan , Wang Yi , Chen Xiao Xia
Published: May 2013

The static tensile test and the Finite Element Model (FEM) study of the flange repaired cut-out laminates were carried out in this work. The tensile test is focus on the strength of the flange reinforcement panel and unreinforced panel. The FEM studies on the reinforcement and unrepaired structure is focused on simulation of the tensile test. The test results indicated that the strain value decreased as the size of load is. The FEM results indicated that the maximum Mises stress value of the flange repaired panel is decreased by 16.08% than the unreinforced.
Adaptable Dynamic Design Platform Based on CAX/PDM System
Authors: Li Yu , Wang Tai Yong , Ge Yin Ming
Published: May 2013

This paper proposed a construction method of the adaptable dynamic design platform based on CAX / PDM system. The method includes three main stages: the establishment of adaptable design service platform, trace dynamic design, variable design and optimization. In addition, a PDM server should be erected as the ties of the whole platform. The platform can be applied to other manufacture industries and reduce the waste of resources. This method can accumulate the experience of redesigning and manufacturing. The seamless integration of data transformation, product designing, analysis, simulation and manufacturing is available. The ultimate goal is the optimization and deformation acceleration of target product.
Design on the Real-Time Online Automatic Measurement System for Body-in-White Based on Industrial Robots
Authors: Zhou Hu , Jiang Xue Chao , Sun Yan Qiu
Published: May 2013

ndustrial robots are introduced into quality control process for automobile welding detecting. The online automatic measurement system for body-in-white based on industrial robots is established firstly, and then coordinate transformation matrix is calculated with optimization algorithm and curve fitting method, the results measured by the system are analyzed at last. Compared with CMM, the system has the simular measurement precision but higher efficiency and automation.
Development of a New High-Rise Building Fire Fighting Robot
Authors: Jiang Hua , Luo Min Zhou , Li Lu
Published: May 2013

This new high-rise building fire fighting robot is a multifunctional fire fighting cabin, which integrated detection of a fire, fire fighting, person search and rescue, etc. The robot is connected with helicopter by a cable and transported over high building by a helicopter. This paper presents the system structure, working principle, the positon and attitude control strategy, and the control system including hardware and software. The prototype of the robot has been basically completed, experiments demonstrate the reliability of the system and all perfomance indexes are satisfied with the designed requirement.
Role of D-Robots in Designing
Authors: Hou Yue Min , Ji Lin Hong
Published: May 2013

The use of robots in the manufacturing industry is very much accepted, but not in designing. The concept of Design Robot (D-Robot) is proposed and the role of D-Robots is analyzed. D in D-Robots refers to Design, including a series of design activities. The concept of D-Robots combines characters of industrial robots, agents and multiobjective optimization. A D-Robot is a software entity capable of perceiving the current design space and elaborating it by transforming current attributes into more specific attributes based on both reasoning on domain rules and its preference. The role of the D-Robot is to execute specific tasks in designing.
Kinematic Simulation of Hydraulic Excavator’s Working Attachment Based on Matlab/Robot
Authors: Cui Hong Xin , Li Huan Liang , Feng Ke , Gao Ya Ming
Published: May 2013

Autonomous excavation has attracted interest because of the potential for increased productivity and lower labor costs. In this work the workspace of working attachment is divided into four spaces by driving space, joint space, pose space and detection space. By geometrical relation of hydraulic excavator working attachment’s mechanisms, the mutual map relationship of every workspace is derived. Subsequently, the kinematics model of hydraulic digger’ working attachment is built so as to accomplish its autonomous excavation. The kinematics solutions and inverse solutions of hydraulic digger’s working attachment are performed. Furthermore, the kinematics simulation analysis on performance and trajectory of the working attachment is carried out by Robotics Toolbox of Matlab. Its conclusion provides technical base and prior computation data for autonomous excavation of hydraulic digger as well as the similar task of other engineering machinery unmanned operation.
A Feasible and Applicable Motion Control Method for AUV
Authors: Zhang Lei , Wang Zhuo , Zhao Jin Xin , Liu Ying
Published: May 2013

Both the high speed and the changing excess buoyancy can make it difficult in motion control of AUV, in order to solve the problems, an improved control method based on S-surface control is proposed. Taking static forces and coupling effects between longitude velocity and other dimensions into account, the compensation related to the speed is brought into the method to handle the effects caused by high speed. In accordance with the thoughts of S-surface control, an anti-windup intelligent integral method is presented to handle the changing excess buoyancy and propulsion loss via an adaptive weight determined by estimating the motion states of AUV. Finally, experiments of velocity control, yaw control and depth control are conducted, and the results prove the feasibility and advantages in application to AUV motion control.
Development of Flexible Positioning System for Assembly Line of Body-in-White
Authors: Wang Chun , Liu Dong Hai , Lin Sheng
Published: May 2013

A new flexible positioning system is developed to fulfill the mixed model production in a car body in white (BIW) welding production line, which is able to respond quickly market needs and shorten the cycle time of auto model update and improve productivity. The system architecture is researched and developed, and the execution unit and motion control unit is discussed. System motion control is realized by means of industrial Ethernet network and SERCOS communication protocol.
Experimental Study of Dynamic Properties of Mechanical Joint Surfaces
Authors: Sun Ya Zhou , Li Yong Heng , Liu Hai Tao , Liu Zong Shan
Published: May 2013

Dynamic properties of mechanical joint surfaces are researched, majorly contains the study of basic mechanism and factors affect the dynamic properties of joint surfaces. Equivalent stiffness and damp are analyzed. Orthogonal experiments are arranged in order to analyze the weight of every major factor that affects the joint surfaces dynamics. Two common materials HT200, 2Cr13 under different processing methods, surface roughness and surface areas are used.
Accelerating Axle Gear-Shift Hole Processing Technique Improvement of CNC Equipment Headstock
Authors: Liu Bo , Huang Xiao Yan , Bao Zong Wei
Published: May 2013

Accelerating axle gear-shift hole processing technique of CNC equipment headstock was improved for gear colliding with housing wall during processing, interference phenomenon, galling and surface quality during scrapping plane. Experience proves that the machining process improvement of the accelerating shaft shift holes of the headstock is very successful and the product bottleneck effect is eliminated.
Finite Element Analysis of Dynamic Property of Agricultural Vehicle Frame
Authors: Kong Sheng Li
Published: May 2013

The vibration deformation problem of vehicle frame directly affects the safety and comfort of whole vehicles. In order to fully understand the dynamic properties of vehicle frame, a finite element model for vehicle frame is established and the natural frequencies of vehicle frame for free working conditions are solved. Compared to the actual excited frequency of matched engine running in the idle speed, some instructive suggestions are given. Those results can be helpful for improvement and optimization of the vehicle frames.
The Simulation Research of High-Speed Motorized Spindle Vector Control System with a Fuzzy Speed Controller
Authors: Zhang Ke , Liu Zhi Xue , Zhang Li Xiu , Wang He , Wu Yu Hou
Published: May 2013

The quality of high-speed machining workpiece is determined by drive control performance of motorized spindle. Vector control is one of high-speed motorized spindle control method, but the traditional controller is difficult to effectively overcome parameter disturbances caused by parameter variations from internal and external system. So it is necessary to use intelligent control. In this paper, a model of a speed and flux-closed-loop vector control system with an inner torque-closed loop is established, and a fuzzy controller is used to adjust the speed. MATLAB is used for load simulation of high-speed segment of motorized spindle, and then the simulation results show that high-speed motorized spindle can be increased in to the high-speed segment using a short period of time, and it has strong anti-interference ability and excellent performance at the same time in the control system presented in this paper.
Information Processing of Precision Positioning Stage
Authors: Wang Jing Shu , Feng Ming Chi
Published: May 2013

The information processing is an effective approach to realize the characteristic of the precision positioning stage. The analysis and comparison between the normal location data and the location data with oscillation reveal the frequency response of the source which causes the oscillation. The compensation efficiency of the control system is explained by the spectral analysis of the compensating command and real-time feedback displacement.
The Escape Wheel Detection System Algorithm Design Based on the Parameters Comparation with the Digital Template
Authors: Chen Jia , Wang Zhong
Published: May 2013

According to the traditional application of the artificial projection method to escape wheel detection, this paper proposes a new method based on digital template, after the introduction of the working principle and advantage, emphatically discuss the algorithm design. The experimental results demonstrate the proposed algorithm has high real-time ability, good reliability and more suitable for practical engineering application.
Study on Measurement with Monocular Vision for Posture of Moving Objects Suspended
Authors: Chen Yi Feng , Bai Zhi Jun , Yin Chun Ping , Lin Qi
Published: May 2013

An independent hardware system based on monocular vision has been built to measure the posture of moving objects suspended. The infrared light source and infrared filter were used to reduce image noise and interference. The six feature points distributing on the different surfaces of the object suspended were determined by PnP problem theory. According to the perspective projection constraints of the 3D coordinates and image coordinates, three posture angles were calculated as the object suspended moved. A verification test has been carried out at the three-axis-turntable to verify the static and dynamic characteristics of the measure system. The results show that the monocular vision system constructed has a good stability of higher measurement accuracy and certain dynamic instantaneity, and may be applied to measure the dynamic posture of the objects suspended.
Real-Time Objects Detection Using Layered Codebook Model
Authors: Yan Dan , Yu Qiang , Wang Ming Hui
Published: May 2013

In surveillance system,it was challenging to improve real-time in the presence of dynamic background motions.We presented a real-time algorithm for foreground-background segmentation based on codebook model.Pixels were converted from RGB space to YCrCb space,background model used layered model.Firstly we established a basic codebook background model and then got rough background pixels by twice frame difference,and then only trained rough background pixels which have removed foreground pixels.Secondly the foreground was segmented from the background and we updated the background in real-time. The experimental results show that this method can save time of establishment of codebook background model and has small calculation and high accuracy in scenes such as illumination changes,swaying trees and stopped objects should be considered part of the background objects.
Finite-Element Analysis of 10kN Deadweight Force Standard Machine Reverse Frame
Authors: Yu Li Juan , Xu Chang Ju , Zhang Xue Cheng
Published: May 2013

In the test enginery, using reverse frame put the pulling force into the pressure is the most commonly structure method. This paper analyzed the buckling problem of the process of reverse frame working, established the finite element model , stability analyzed , putted forward and proved the critical condition of reverse frame in the course of stability, Verified in 10kN deadweight force standard machine.
Development of Image Processing Algorithm for Cytological Diagnosis of Uterine Cervical Cancer Tissue Examination
Authors: Oh Han Yeong , So Ha Ju , Kim Seong Hyun , Kim Dong Wook , Kim Hyun Chang
Published: May 2013

In this study is relevant to cell area extraction for cytological diagnosis of liquid-based cell examination being used for early diagnosis of uterine cervical cancer by utilizing image processing. As existing cytological diagnosis process has been performed manually by cytotechnologist, the amount of cell image that could be processed was limited. Therefore, in this study, cellular domain extraction through which automatic processing of cytological diagnosis process is enabled was performed and its condition was established depending on the size of cell nucleus based on cytological diagnosis standard of uterine cervical cancer cell. Obtained cell image was processed by hough transform matching with cell image by using matlab through preprocessing phase. As a result, 28 sample images among total 30 sample images were succeeded in finding out target cell and two sample images failed to find it. In the future, modification and verification for such failure case may be required to be performed. It is expected that the result of this study could be utilized for diagnosis process automation of liquid-based cell examination.
Study on Control Strategy of Steer-by-Wire Vehicle with Joystick
Authors: Liu Chang , Zheng Hong Yu , Zong Chang Fu
Published: May 2013

This study aims the development of a control strategy of steer-by-wire automotive with joystick. This control strategy makes driver able to change or maintain the steering angle of road wheels of the vehicle by joystick, provides feedback force to the driver and offers variable steering ratio, variable force feedback and proper damping. The control strategy was mathematically modeled and implemented using the simulation tool Matlab/Simulink and tested to inspect its effectiveness. The result of the test proves the control strategy is effective and the performance of a joystick steering system can be comparable to a traditional steering wheel by applying this control strategy, indicating potential possibility of joystick-steered automotive.
Study on Simulation of Multi-Loop Networked Control System
Authors: He Fang , Pang Jia Jia
Published: May 2013

Multi-loop NCS is widely used in machinery networked manufacturing production line. The performances of NCS are influenced by the network scheduling and some uncertainty factors, such as transmission rate, delay, loss rate of packet, disturbance, and so on. Considering these influence factors, a simulation model of a multi-loop is constructed using TrueTime toolbox of Matlab software. The related study methods of performance of NCS are given. As the result of simulation, the performances of multi-loop NCS are observed and analyzed. The work done in this paper is very meaningful and helpful to further make related control strategy improving the research on performances of multi-loop NCS.
Intelligent Battery Charging Equipment of Gas Outburst Prediction Instrument
Authors: Liao Gao Hua , Liu Jia
Published: May 2013

Being the charging of inefficient and long time, the current charging for the Outburst Prediction Instrument has great damage to the battery. A new battery charger for mining electric locomotive is developed based on Intelligent technology. Adopt new Buck topology, based on the best charging of the curve, wave picking intermittent plus-minus zero pulses used in charging method, intelligent control techniques implement functions such as data collection, complex control algorithm, PWM output control. According to the detection of the battery state automatically adjusting the parameter of the charging, realize the battery recharge and polarization discharge. The charger uses the improved variable current intermittent charge method to charge batteries. The experimental show that the charger has advantages of small size, light weight, easy use, high efficiency and less maintenance.
The H∞-Based Control Strategy to Restrain the Interference to Battery
Authors: Gao Chun Bin , Yu Xiu Min
Published: May 2013

The motor will affect stability and efficiency of battery when it power for motor. The fluctuations of load leads to fluctuations in the torque of the motor which will make the power of battery produce the corresponding fluctuations. Based on the analysis, establish the energy loss model of IPMSM. Based on H∞, finish the control strategy of the almost disturbance decoupling to vehicle power system. The analysis of actual data and the corresponding simulation results shows that the strategy can restrain specific interference that prove it is almost disturbance decoupling.
A Novel Control Algorithm of Electronic Braking System for Trucks
Authors: Mai Li , Wang Li Ya , Mi Pei Wen , Yang Sheng Nan
Published: May 2013

Electronic Braking System (EBS) can improve the braking performance of trucks significantly. A novel control algorithm for EBS has been proposed in this paper, which consists of Driving Identification Module and Braking Force Distribution Module. Driving Identification Module can recognize the non-emergency braking situation according to the signal of the electronic braking pedal. Braking Force Distribution Module regulates the braking force on front and rear axle by comparing the slip-ratios on every axle. As a result, the optimum braking pressure on different axles can enhance the safety and balance the brake wear. The performance of the control algorithm has been simulated utilizing 15-DOF vehicle dynamic model. The results show that the control algorithm can provide a good braking feeling and the braking performance of the vehicle is perfect.
Optimization Design of Bolted Connections Based on Contact Stress
Authors: Cui Zhao Xia , Guo Yu Peng , Zhang Zhi Jun , Gong Yong Zhi , Qian Shao Hua
Published: May 2013

In a sling and hoisting structure consists of seamless steel tubes as hoisting column, bolts and connectors, all the weights are supported by bolted joints. For the bolt joint is located near the end of the hollow column, the position of the holes in sling column have important influence on the loading ability of the structure. In order to study the reliability of the sling structure, the contact stresses between bolts and its connectors are calculated theoretically and by using FEM (finite element method), and the optimum position of the holes are determined further.
Design and Application of Self-Adaptive Controller Based on Q Series PLC
Authors: Hao Ying , Yuan Hao , Dong Feng
Published: May 2013

The control of simulated beer production line is implemented based on a Q series PLC controller of Mitsubishi company. The mathematical modeling method and the self-adaptive control strategy are introduced. The Mitsubishi PX-Developer software is adopted to design, run and debug online the PID and self-adaptive PID controller. Performance comparison between the two kinds of control strategy is made. It is shown that the self-adaptive PID control algorithm has the superiority.
Design of Combustion Scheduling Simulating Control System on Marine Auxiliary Boiler
Authors: Jin Jian Guo , Wang Zong Tao
Published: May 2013

With the widely application of PLC technology on marine auxiliary boiler, the marine engineers should master the control principle. Basing on the characteristic of marine boiler, a combustion scheduling simulating control system on marine auxiliary boiler was designed with PLC technology to meet the need of sailors teaching and competence assessment. The system integrates automatic igniting, water feeding, two-position control of steam pressure and safety protection together. With running reliable and operating simple, it helps sailors to master the control principle of marine auxiliary boiler based on PLC technology.
Research of Thermal Insulation Control for Underwater Storage of High Pour Point Crude Oil
Authors: Zhang Chun Tang , Wang Yi Ling
Published: May 2013

Underwater oil storage is a new offshore oil drilling technique developed in recent years. Because of the high pour point, crude oil condensation will affect its storage and transportation. In order to solve this problem, a set of thermal insulation control system for underwater oil storage was designed in this paper. Flexible isolation cloth with low thermal conductivity and insulation coatings on the inwall of oil tanks are applied to reduce temperature loss, while mamdani fuzzy controller was used to control the heating of hot water and to solve nonlinear and large time delay and inertia of the object so as to maintain the stable oil temperature.
Application of Blow-Off Wind Tunnel Control Based on Genetic Algorithm Optimized BP-Neural Network PID Neural Network
Authors: Ji Li , Ji Yu , Lian Xiao Fei
Published: May 2013

For a blow-off tunnel running, there is the large delay and lag issues. We build a mathematical model of the wind tunnel Mach number control by the test modeling method, then analyse the pros and cons of various control methods based on BP neural network control algorithm. Put forward genetic algorithm optimization neural network adaptive control method to solve the large inertia of the wind tunnel system, and large delay. A large number of simulation studies, run a variety of operating conditions for the wind tunnel simulation proved that the improved adaptive neural network PID control method is reasonable and effective.
Study on Maximum Power Tracing Controller Based on Self-Adaptive Strategy for Variable Speed Constant Frequency Brushless Doubly-Fed Generator
Authors: Wang Xiu Ping , Qu Chun Yu , Guo Rui , Zhao Jun You
Published: May 2013

The key technology of variablespeed constantfrequency (VSCF) brushless doubly-fed generator (BDFG) was getting the maximum power under the variable wind speed by adjusting the rotor speed of the induction generator according. Wind turbine systems had many uncertain factors with strong nonlinear multivariable with and disturbances. Based on the prototype of wind electricity conversion system (WECS), a new maximum power point tracking control which is realized by self-adaptive controller strategy for variable speed constant frequency wind generation system has been developed in this paper. A experiment platform of a 8kW laboratory variable speed constant frequency wind generation system controlled by TMS320LF2812 and TMS320VC33 was developed. Experimental results show that the system can operate at the expected points in the wide range of wind velocities and realize the control of maximum power point tracking very well.