bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Key Techniques for Monitoring System of Agricultural Products Transportation Environment Based on Internet of Things
Authors: Cao Jian Hua , Wang Ling Ling , Luo Hong Xia
Published: November 2012

Along with the construction of the international tourism island, the National Development and Reform Commission plans to build Hainan Island into an important national winter fruit production base. That makes new demands for tropical agricultural products logistics. In order to ensure that winter melon food is supplied regularly in China, it is important to raise the agricultural products logistics level. Transportation environment is a key factor of tropical agricultural production quality and safety in logistics. As we all known, a bad transportation environment will result in food spoilage and waste, and thus it's very necessary to monitor, collect and process environmental information, but scholars less involve in this area now. The key problems about information collection, analysis, diagnosis and early warning prediction are systematically studied in this paper. We emphasize the key technology of information, including sensor, WSN, computer network and database. Based on advanced information technology and developed hardware, we put forward an available information monitoring system of agricultural products transportation environment. Technically, the research will be helpful for monitoring transportation environment and ensuring the quality safety of agricultural products in transit.
Design of Agriculture Environment Monitoring System Based on Wireless Sensor Network
Authors: Zhu Bi Hua , Zhu Ying Li
Published: November 2012

With the development of agricultural modernization, agricultural environment protection, sensor technology, MEMS, wireless communications, Wireless Sensor Networks have been paid great attention in industry field and our daily life, this paper designs an agricultural environment monitoring system based on wireless sensor networks, and gives the hardware design of sensor nodes and the flowchart of software. In order to meet requirements of agricultural environment monitoring signals, MSP430F149 is chosen as the microprocessor, and CC2420 module acts as the wireless communication module. The system can real-timely monitor agriculture environmental information, such as the temperature, humidity and light intensity.
Monitoring and Alarm System for Coal Mine Safety Based on Wireless Sensor Network
Authors: Zhu Ying Li , Xie Ling Qing
Published: November 2012

In order to guarantee the safety of the coal production and effectiveness better, this paper designs a monitoring system for coal mine safety based on wireless sensor networks, and gives the hardware design of sensor nodes and the flowchart of software. For the purpose of meeting requirements of monitoring signals, CC2430 is chosen as the microprocessor. The sensor nodes can collect and transport the environment parameters of the mine including temperature, humidity and gas concentrate and so on, and send the data through the GPRS module to the remote monitoring center. The system can improve the level of monitoring production safety and reduce accident in the coal mine.
Identification of Arsenic in the Water Using Energy Dispersive X-Ray Diffraction
Authors: Zhang Fang , Li Min Qiang , Liu Jin Huai
Published: November 2012

The occurrence of arsenic in natural water has received signiﬁcant attention during recent years. The arsenic plays an important role for its behavior and toxicity in the aqueous system. Arsenic is a toxic pollutant in water with serious health effects upon long-term intake of even low concentrations through drinking water consumption population. By means of the energy-dispersive X-ray diffraction (EDXRD) technique, confected different concentrations of sodium arsenate solution and reservoir water of Tuoketuo county in the Inner Mongolia, were analyzed. The result shows that arsenic is present within reservoir water of Tuoketuo county. But, fluorescence peak photons of arsenic in the solution are not in proportion to the concentration. So, it is difficulty to quantitatively decide the concentration of the arsenic in the water.
Comparative Analysis on Characteristics of Gasoline & Gasoline Methanol Blend
Authors: Chivukula Venkata Kalyan , Nag M.V. Aditya
Published: November 2012

Researchers, environmentalists, and policy makers are keen to reduce the dependency on use of fossil fuels towards climate change. Various alternatives are being implemented for alternate sources of energy for transportation sector; Biofuels can reduce the dependency on the import of the fossil fuels. Different kind of biofuels are available compositions are alcohols, ethers, esters etc. Commonly available biofuels are ethanol, methanol and biodiesel. They can be produced from various thermo-chemical and bio-chemical processes. Methanol has been gaining momentum as a potential alternative for traditional fossil fuels in transportation sector. There is an increased trend in the development of methanol as a fuel around the world. This paper deals with the study of the use of methanol as an automotive fuel. Methanol has certain positive properties on the vehicle’s performance. However, methanol cannot be used directly as a fuel in the vehicles due to volatility and compatibility issues. But it could be used as a blend with the gasoline for its characteristics such as high octane number and lower emissions. Blending of methanol with gasoline will have affect on the properties of blend, this paper discusses about the change in properties and its effects on engine.
Design and Research of Aligned Array Pressure Monitoring System Based on Strain Chip
Authors: Xia Hui , Liu Guo Qiang , Ji Su Yun
Published: November 2012

Rehabilitation technical aids have an important role in the functional rehabilitation of children with cerebral palsy. But now the rehabilitation technical aids for cerebral palsy is lack of pertinence and evaluation. The testing equipment of rehabilitation technical aids for cerebral palsy child can detect the pressure distribution between cerebral palsy patients and rehabilitation props in real time, and provide quantitative basis for clinical effect evaluation and auxiliary tool’s adjustment. This paper design a pressure monitoring system with 16 sensor points for Cerebral Palsy Children, and the monitoring system is mainly composed of three parts: a strain gauge array unit, signal conditioning and acquisition unit, data display and analysis. The research on pressure monitoring system based on the strain chip, is critical to study force between rehabilitation technical aids and cerebral palsy children. In this paper , the works on the detailed description of each unit system, and reasonable verification of the experimental design provide solid foundation for the future studies.
Joint Target Detection and DOA Estimation of Underwater Targets Using Moving Array
Authors: Hou Yun Shan , Xu Xiang Yi , Yu Ping
Published: November 2012

In the field of array signal processing, the detection of the number of signals and estimation of the direction of arrival (DOA) of signals are two important issues. They are generally solved separately with some algorithms dedicated to detection and other algorithms dedicated to DOA estimation. In this paper, an integrated method called SATDE(Synthetic Aperture Technique based Detection and Estimation) is proposed for multi-target detection and DOA estimation by underwater moving array. The proposed method exploits the synthetic aperture technique to achieve high angular resolution and the energy detection idea embodied in minimum variance distortionless response(MVDR) spectrum function to determinate the number and DOA of signals at the same time. Simulations and experimental studies show that the proposed method yields better detection performance than conventional detection methods such AIC and MDL for closely-spaced coherent signals and produces correct DOA estimations at the same time.
The Design of Low Power Vibration Detection System Based on MEMS
Authors: Xing Pan , Ou Guang Yu , Yi Gao
Published: November 2012

The Design of Low Power Vibration Detection System Based on a three-axis accelerometer MEMS device, which can perform many functions: making long-term monitoring on the shock intensity in both vertical and horizontal directions, recording the shock peak and waveform. The system with STM32 processor, high-precision data acquisition, mass storage, USB and so on. Based on FatFS file system, the system concerned with the bad block management problems in NandFlash will be optimized and thus the reliability of the system will also improve.
An Ultrasonic Travel Time Measuring Method for Relative Blood Volume Monitor
Authors: Jiang Shun Zhong , Fan Jiang Hong , Xia Wu Bing
Published: November 2012

This study introduces the basic principle of relative blood volume monitor (BVM) by comparing several ultrasonic travel time measuring methods, brings forth the high-precision ultrasonic travel time measuring method based on TDC-GP2 time measurement chip and MSP430 Single-chip Microcontroller (SCM), presents the configuration of hardware and software in the system, and illustrates the structure and time measurement principle of TDC-GP2 time measurement chip.
A Novel Ultrasound Imaging System Based on Endoscopic Array Probe
Authors: Hao Yun Xia , Li Ying , Wang Yi , Chen Xiao Dong , Yu Dao Yin
Published: November 2012

A novel ultrasound imaging system based on endoscopic array probe is presented in this paper. The system utilizes an endoscopic linear-array probe instead of the conventional single-element probe to implement ultrasound scanning in vivo. For the system, a micro linear-array ultrasound probe sized Φ10mm×20mm is firstly designed. And then the excitation circuit, gating circuit and echo receiving and processing circuit are all designed cored by a center control unit FPGA. Finally the research of d/2 focusing algorithm is implemented on the basis of the system. After processed, the gray image of echoes reflected by a glass jar’s wall is obtained and shown on a computer.
A Portable Spectrum Measurement System Based on Laser-Raman and Fluoresce Spectrum for Cooking Oil Analysis
Authors: Feng Wei Wei , Zhang Wei , Tian Xiao Xue , Peng Hai Long , Xiong Hua , Chen Ling Xin
Published: November 2012

A system based on spectrum analysis for cooking oil testing which combining laser-induced-fluorescence and laser-Raman technology is established. Several oil samples are testing by this system. The measurement results show that, there are rich information for fluorescence and Raman spectrum for the oil samples and there are obvious difference between the fluoresce spectrums for these samples, which can be used as a reference for oil pollution classification and recognition. This technology can be used for in-situ monitoring equipments.
Environmental Data Acquisition System for Satellite Transportation
Authors: Srivastava Shashank , Sahu Shreeniwas , Sekar A. , Govinda K.V.
Published: November 2012

Program critical, high cost and delicate space hardware like satellite built with pressurized tanks, sensitive optics, delicate electronics and hazardous chemicals need protection from various environmental hazards during transportation. These environmental hazards include shock, vibration and handling loads and climatic hazards such as temperature, humidity, rain, dust due to harsh ambient atmospheric conditions etc. The Satellite Transportation System (STS) is equipped with adequate protection and monitoring system. The environmental data acquisition system is used to monitor the environmental conditions of satellite during transportation. This paper describes the data acquisition system used for quantitative validation of shock and vibration attenuation system and temperature and humidity control system. The acquired data are processed and interpreted to express the environmental conditions during various phases of development such as road survey analysis, performance validation and refinement of design for the shock and vibration isolation system of trucks and STS. Further, these data are used for the post-transportation health assessment of satellite that are vital to minimize post transportation tests on satellite.
Implementation of Airborne Remote Sensing Route Design System
Authors: Yang Guo Dong , Liu Guang Nan , Zhang Yuan Yuan
Published: November 2012

Route design is an important part of airborne remote sensing. On the basis of DEM, using raster and vector geographic information, designing aerial route quickly and accurately is the main target of this system. Considering the actual requests, this system formulates two modes of aerial route design methods: according to navigating area and two points to design. This paper mainly introduces functions of system and algorithms of aerial route design methods.
The Display and Free Rotation of 3D Model in Virtual Assembly System Based on ACT
Authors: Jiang Du , Ji Kai Qiang
Published: November 2012

We proposed a theory of assembly constraint transformation (ACT), and achieved the display and free rotation of 3D model using OpenGL graphics standard as interface, VC+ + 6.0 as the development tool, and ArcBall algorithms as the basic application, making it easy to accomplish Human-Computer Interaction through the mouse control in virtual assembly.
Research of Hand Gesture Recognition in Multi-Touch Projector-Camera System
Authors: Li Wen Jie , Wu Li Ming , Liu Chen
Published: November 2012

This paper studys the feasibility of the shadow of interactive gestures on the projection screen as the control instructions in a projection interactive system. With regard to complex background of the projection screen, we put forward to detect mobile gestures and the shadows of gestures by using the way of the Gaussian mixture model. Relative to the non-rigid body interaction gestures, The shadow of gestures has a simpler two-dimensional characteristics and greater differences from the other regions of the projection screen. Based on this characteristics, we adopt Ostu threshold segmentation algorithm to remove the interference of the gestures. Then we use the mixed way of the radial symmetry transform and curvature threshold to position the interactive fingertips as interactive instruction of the projector-camera system. Conctroling the screen in a wide range without carrying any equipment is completed. The experimental results show that this method is easy to operate and has a high accuracy rate.
The Real Time System of Hair Detection in Mushroom Based on Computer Vision
Authors: Li Tong Qiang , Zheng Cai Feng , Gan Jian Peng
Published: November 2012

By analysing the Mushroom image, the paper puts forward a kind of line-structure extraction algorithm combination of local gray value and continuity of line direction .After the operations in many aspects of basis image processing, such as gray-scale, denoising , segmentation, contour detection and morphological, this article has developed a set of hair detection system based on computer vision for the Mushroom. The experimental results show this system could well meet the actual needs, and has a broad market prospect.
A Design of IP PBX Phone System
Authors: Song Xin , Lian Ming Huan
Published: November 2012

In order to integrate the telecommunications network and IP network, providing companies with a unified voice services, a design of IP PBX phone system is proposed. On the basis of VoIP, this design implements most of the traditional PBX functions. It provides function-code functionality allows user to directly control phone; provides user-trunk-LLDC configurations to manage user’s privilege; provides a powerful and flexible IVR system; provides SIP phone and SIP trunk support. It also supports most call features such as black list, speed dial code, forward, transfer, pick-up, can meet most companies’ requirements.
An Improved Algorithm of Hand-Gesture Recognition Based on Haar-Like Features and Adaboost
Authors: Ding You Dong , Pang Hai Bo
Published: November 2012

In this paper, we proposed an improved algorithm of hand-gesture recognition based on Haar-like features and Adaboost. Initial, we calculated the Haar-like features of hand-gesture images by integral image. Then, we used the principal components analysis method to reduce the dimension of Haar-like features. At last, an Adaboost classifier performed the hand-gesture recognition task with the hand-gesture features. A dataset with large hand gestures (12 types, 600 hand-gesture images) was built, including some large pose-angle (about 40 deg.) hand-gesture images. Our experiment results demonstrated that our method could effectively recognize different hand gesture, and the best appropriate N was 12. In addition, the average processing time of the proposed method was about 0.05 second for every image.
An Accurate Method of Adjusting the Resonant Frequency of Defected Microstrip Structure
Authors: Cheng Dan , Yin Hong Cheng , Zheng Hong Xing
Published: November 2012

An adjustable defected microstrip structure is discussed in detail in this paper. To obtain a better bandstop property, a simple U-shaped slot is etched in the center of microstrip line, the lower insertion loss in the passband and higher rejection level has been exhibited. The resonant frequency is extracted using transmission line network analysis. At the same time, an accurate method of adjusting the resonant frequency is proposed to match the designed resonant frequency exactly. A fabricated sample has been tested to verify the design. Measurement results are in very good agreement with simulations.
Simulation Research on Cavitation Flow in Tip Clearance of Axial-Flow Pump
Authors: Li Zhong , Zhang Ning , Hong Bo , Li Qing
Published: November 2012

Based on external characteristic test, the performance of designed axial-flow model pump was determined. Combingmixture N-S equations with RNG turbulence model and full cavitation model, the cavitation flow in tip clearance of axial-flow pump at flow rate of best efficiency point is simulated. The results show that the incipient cavitation region is located in the leading edge of tip airfoil. With the decrease of cavitation number, the cavitation region at tip airfoil moves gradually from leading edge to trailing edge. The development process of cavitation can be divided into three different stages and the typical characteristics of each stage are given
Numerical Simulation of Thermal Process in Rotary Hearth Furnace for Pellet Direct Reduction
Authors: Wu Yu Liang , Jiang Ze Yi , Zhang Xin Xin
Published: November 2012

A mathematical model of complex thermal processes with combustion, radiation and flow in rotary hearth furnace (RHF) for pellet direct reduction is established with CFD commercial software Fluent. Temperature distribution, pressure field and flow field in RHF are simultaneously analyzed by numerical method. It has been found that the temperature distribution in the furnace can meet the need of thermal institution for pellet direct reduction, and great pressure field and flow field can be formed on the basis of reasonable arrangement of burner, nozzle and partition. The simulation results would be helpful for engineering design and parameter optimization of RHF.
A Modeling Method of Multiphase Synchronous Generator for Shipboards Power System Based on PSCAD/EMTDC
Authors: Xing Jian , Qian Luo Jiang , Ren Si Min
Published: November 2012

The synchronous generators of shipboards power system are generally multiphase (mostly twelve phases), it means necessary to building the model by code programming because there aren’t this ready-made component in EMTDC or other digital simulation software. In this paper, a programming method for numerical calculation of synchronous generator and interfacing program codes to PSCAD/EMTDC are described. According to generic rotate machine Park equation, trapezoid integral is adopted to make the math differential equations discrete to numerical difference expression. The paper emphatically deduces discrete algorithm for getting numerical transient solutions of synchronous generator model. For the sake of the verification for this modeling method, a three-phase synchronous generator model based on code program modeling is taken as test demonstration.
Numerical Simulation Program of the Foundation Pit
Authors: Yang Qing Nian , Zhang Shi Zhong , Sima Yu Zhou
Published: November 2012

In this paper, a deep foundation pit of one subway station is analyzed under two different precipitation conditions, and the deformation laws of the pit under one-time precipitation and step-by-step precipitation conditions are investigated. The results indicate that the deformations caused by one-time precipitation are significantly larger than the deformations caused by step-by-step precipitation. Therefore, a step-by-step precipitation scheme is preferred in order to reduce the deformation cause by foundation excavation, when construction period permits.
Study on Lidar Data Interpolation Method Based on GA-BP
Authors: Zhang Yi Kun , Zhang Ming Hui , Hei Xin Hong , Hua Deng Xin , Chen Hao
Published: November 2012

Aiming at building a Lidar data interpolation model, this paper designs and implements a GA-BP interpolation method. The proposed method uses genetic method to optimize BP neural network, which greatly improves the calculation accuracy and convergence rate of BP neural network. Experimental results show that the proposed method has a higher interpolation accuracy compared with BP neural network as well as linear interpolation method.
The Application of Virtual Reality Technology in the Housing Display System
Authors: Wang Li Xia
Published: November 2012

This paper takes the virtual reality technology as a core, has established the housing virtual reality roaming display system, Under the premise of the detailed analysis of system architecture, We focus on how to form the terrain database and the scenery three-dimensional database by using the MultiGen Creator, and call OpenGVS through MSVC to carry on the real-time scene control and the method of the complex special effect realization.
Modeling and Dynamic Simulation of MARK XIIA Mode 5 System
Authors: Yang Jian Bo , Guan Chun Jian , Liu Peng
Published: November 2012

In order to improve the ability of the Battlefield Situation Awareness, US and NATO allies designed the new Mark XIIA Mode 5 IFF system. Aiming at the problem of modeling and simulation of Mark XIIA Mode 5 IFF system, this paper constructs simulation model of Mark XIIA Mode 5 IFF system based on Simulink platform. Simulation waveforms and error code rate analysis are given. Experimental results show that the modeling method is effective.
Hardware-in-the-Loop Simulation System of Penetration Fuze Based on LabVIEW
Authors: Liu Zong Bao , Gao Shi Qiao , Yao Feng Lin , Du Jing Qing
Published: November 2012

Fuze is an important component element of penetration weapons, for fuze tests in shot fields are expensive and can’t grasp the entire process, therefore a method of simulating the projectile penetrating into concrete target using Virtual Instrument Software LabVIEW combined with computer simulation is proposed here. Firstly the constitution of the hardware-in-the-loop simulation system is introduced, then the variation of acceleration when projectile penetrates into concrete is imitated, finally the whole system is tested, and the results indicate that the system can simulate the process of projectile penetrating into concrete target precisely and reliably.
An Application of Binocular Vision Model in Intelligent Vehicle System
Authors: Xing Xiu Yuan , Wang Dai Zhuang , Yi Peng
Published: November 2012

In this paper, the binocular stereo system is applied to intelligent vehicle. A series of simulation tests have been carried out. Two CCD video cameras with the consistency of parameters and performance are applied in the tests to acquire image synchronously. In order to achieve the performance of real-time and accuracy, Hough Transform is applied for edge detecting and SURF algorithm is used for image matching. After image binarization, edge detection and image matching, we can calculate the parallax of the two corresponding images, and then get the distance and relative velocity of the obstacle. Satisfactory results have been achieved in comparison with the reality.
The Simulation of Vision Measurement System for Cannon Barrel Pose
Authors: Zhu Y.X. , Duan X.S.
Published: November 2012

For the pose measurement of cannon barrel, a vision method through checked plane had been proposed. To test and improve the precision of this new method without considering the hardware error and some other inextricable objective factors，derive the imaging model of the marker (checked plane) from motion model of cannon barrel and the position relative to it using variable-controlling method. Establish the computer simulation platform of vision measurement system for cannon barrel pose based on C++ Builder. The simulation experiment validate the veracity and dependability of this method.
Numerical Simulation of Air Flow Arrangement and Energy Conservation of Air-Condition
Authors: Yang Jun Qiang , Wei Hong Bo , Li Ming Jun
Published: November 2012

In this paper, we study the building air-conditioned room in the small space and establishment the mathematical numerical simulation model which is for the designing and energy saving of the air distribution, We analysis the energy effect on five types of the airflow organization based on simulation software developed by our research team to study the designing and energy saving of the air distribution, and the results show that considering both the two ways of the air distribution is more reasonable and energy-efficient.
Numerical Simulation of Array Induction Logs Time-Lapse Responses and Formation Resistivity Profile Reconstruction with 5-Parameter Inversion
Authors: Fan Yi Ren , Li Hu , Hu Yun Yun , Sun Qing Tao
Published: November 2012

In order to improve reservoir fluid recognition, sensitivities of array induction response to different invasion properties in both oil-bearing layer and water layer are analyzed. A numerical algorithm is adopted to simulate time-lapse response of array induction logs during mud invasion and signal processing of the array induction log is developed. Features of array induction responses during mud invasion were researched. A “five-parameter model” (r1, r2, Rxo, R1/2, Rt) which can match a variety of invasion conditions is approached and carried out suing a fast invasion method. Therefore, the identification of fluid type can be realized effectively by inversion of array induction log combined with time-lapse responses of array induction log. It is demonstrated that the inverted resistivity presents a typical non-monotonic variation in oil-bearing layer and a monotonic variation in water layer, which agrees well with the actual invasion property. It provides quantitative information for the discrimination of oil/gas or water zone.
Throw Distance Model and Contact Force of Bicyclist in Traffic Accident Based on PC-CRASH
Authors: Zhang Jie , Chen Hong Yun , Gao Ye Wen
Published: November 2012

Computer simulations, such as PC-CRASH, were used in this paper to develop simulation model of car-bicycle/bicyclist crash. The change law of throw ditance which belongs to the first falling point and final falling point of bicyclist were studied on. Through researching the parameters obtained in the process of computer simulation, we concluded the stress size on the important part such as head, chest and knee of bicyclist in different accident modality. This research result provides a good idea in car-bicycle/bicyclist crash reconstruction.
Numerical Investigation of Plasma Plume Deflection with MHD Control
Authors: Sun Bai Gang , Yang Hui , Liu Yong Bo , Liu Xiang Bin , Li Feng , Wang Jing Yu , Mu Yan Dong
Published: November 2012

At present, NASA is engaged in research to develop Plasma flow control technology on aeronautic and astronautic scopes. This article presents a compositive MHD(magnetohydrodynamics) method to control high-velocity Plasma flow generate by alkali salts in combustion gas, demonstrates that MHD system can make the jet plume to deflect, and realizes the aeroengine thrust-vector purpose. By analyzing and applying the MHD mathematical model, the author performs the numerical simulation of plasma flows-field with the MHD condition，shows that the jet plume in plasma state can deflect with MHD.
Application of Web-Based 3-D Panoramic Technology in the Equipment Visualization
Authors: Zheng Ling , Yang Chao Ran , Cheng Lei Yang
Published: November 2012

At present, along with the development of power information technology, the research of visualization of the equipment status has become the main work. This paper analyzes the existing equipment visualization system and finds that equipments are displayed by two-dimensional graphics, and cannot give a really reflection of the surrounding environment. In order to solve this problem, this paper proposes a solution which uses three dimensional panoramic technologies in electrical equipment visualization system. The scheme realizes virtual scene construction which is based on static images; consequently it will be more convenient for visual management of electrical equipment.
A Design of Controller for Wind/Solar Hybrid Power System with DC Load Based on PIC24
Authors: Yuan Ju Ming , Shou Jiang Yun , Zha Lei Ming
Published: November 2012

This paper presents a controller design based on PIC24 single chip microcomputer, applied to a small independent wind-solar hybrid power generation system. The system’s characteristics are analyzed and the complementary charging algorithm for the battery is studied. The PIC24MCU’s internal resources are made full use of in the controller design, especially the multiplex PWM output and A / D input, thus the hardware circuit is simplified. The controller can not only realize the hybrid of wind generator and solar cell for charging the storage complementary, but also provide a constant current control function for the DC load.
LS-SVM Adaptive Back-Stepping Control for a Class of Uncertain Nonlinear Systems
Authors: Zhu Guo Dong , Lin Hui , Wang Chen
Published: November 2012

Based on back-stepping control design, adaptive control and least squares support vector machine theory, a new least squares support vector machine adaptive back-stepping control law was designed for strictly block type of feedback nonlinear systems control with uncertainties. Least squares support vector machine theory method to approximate a nonlinear function of uncertain nonlinear systems by analyzing the disadvantage of common back-stepping. New control law of the nonlinear systems is achieved without accurate mathematical model. The method overcomes the impact of the bounded uncertainties on the control system. On this basis, the system stability and convergence are proved by Lyapunov method. Simulation results indicate that the designed control law has strong robustness and adaptability, uncertainties that exist in the strict block feedback nonlinear systems.
Research on Performance of Control System Based on EtherCAT
Authors: Zheng Qing Chun , Wang Wen Ge , Wan Xiao Wen
Published: November 2012

Aiming at the increasing demand of performance for industrial control, the industrial real-time Ethernet control system for high-speed control based on EtherCAT was presented. The principles and frame structure of EtherCAT were introduced. The system response time, EtherCAT cycle time and oversampling technology of achieving microsecond-order sampling were analyzed. By designing the experimental platform based on EtherCAT, The system response time, EtherCAT cycle time and oversampling performance were tested. Theoretical analysis and experimental test results show that the System can achieve millisecond-order response time and microsecond-order oversampling cycle time. Therefore, Industrial Ethernet control system based on EtherCAT is very suitable for high-speed control and real-time data acquisition.
Research on Online Standby Running of Power Automation System Based on CORBA
Authors: Chen Hong Qiao , Zhou Wen Jun , Yang Zhi Qiang
Published: November 2012

Performing the CORBA-based CIS (Component Interface Specification) services of IEC61970 is an important part in integrations of power automation system applications. Because of high requirement of the reliability and continuity in power automation system, implementing online standby running modules by CORBA-based software is becoming an indispensable function. This paper studies how to manage online standby running for the CORBA-based services on the basis of online standby management of SoftBus developed by iESLab. In this paper, two practicable ways to realize online standby running based on CORBA are presented and the difference between them is discussed in detail.
Topology-Based Traffic Identification Method with Heuristic Rules
Authors: Cao Ping , Zhang Jian
Published: November 2012

Traffic identification using statistic features of traffic flows has attracted a great deal of interest. One challenging issue for these methods is that they ignore the short flows containing just 2-3 packets, for statistic features of short flows are mainly insignificant or meaningless. A topology-based method combining heuristic rules and deep-in packet inspection is proposed to identify the application types of traffic flows. The experiment results demonstrate that the method can get higher precisions and similar recalls compared to deep-in packet inspection method.
Develop of Master Station Facility Based on the Distributed Structure of the Oil with TWACS Well Remote Monitoring System
Authors: Zhang Liang , Lu Wen Bing , Luo Ying Li , Chen Min , Zhang Chong
Published: November 2012

Based on the needs of TWACS (two way automatic communications system) the technical mechanism and digitize oilfield construction, this article designed and implemented a TWACS master facility which based on the work of the distributed structure to Meet well remote monitoring and management. Each 10KV line set DSP as the upstream demodulation unit platform in the master facility, which TWACS can detect the upstream signal from the 10KV line at the same time. Its feature has proved by field trials of the oilfield distribution network, and greatly improved efficiency of well remote monitoring.
Research of Automotive Glass Fog System Based on RBF Neural Network
Authors: Zhang Liu
Published: November 2012

By describing a danger from driving vehicles with fog on windshield, we give a concept of a new type of automatic windshield defogging system applying traditional sensor and RBF neural networks. In terms of an analysis on the source of fogging on automatic windshield, applying traditional sensor, we design a RBF neural networks. Then, via RBF neural networks mode, training and testing 48 series of data from an experiment. A result of MATLAB software demonstrates that this new system defog from automatic windshield swiftly and precisely by applying RBF neural networks.
The Research of Heating System Based on Generalized Predictive Control
Authors: Zhang Su Ying , Qi Xue Lian , Zhao Xiao Xue , An Hui
Published: November 2012

Central heating in some of the cities in northern China has become the main way of heating in winter. In order to save energy, reduce home heating costs and improve comfort by controlling the room temperature, it is necessary to study the central heating, to increase the degree of automation of the heating system. In this paper, a mathematical model of heating system is presented. The generalized predictive control system for heating system is developed. Then Matlab was used to simulate the method. The simulation result shown that the generalized predictive control has made very good control effect on the type of this kind of model.
Parameters Determination of PID in MAX1978
Authors: Lv Mei Mei , Lv Tie Liang , Ou Guo Feng
Published: November 2012

The system based on the working principle of MAX1978 and TEC, using multi-point at different frequency measurement method, and establishing corresponding mathematical model. Confirmed the pole-zero plot of the PID, according to the amplitude-frequency and phase-frequency characteristics of the mathematical model, and then, adjusted the corresponding resistance and capacitance of the circuit to make the accuracy of the temperature adjustment to 1E-3centigrade.
Diagnose Expert System of Engine Based on Fuzzy Neural Network
Authors: Tian Miao
Published: November 2012

Engine has a high chance of failure, it usually accounts for about 40% of vehicle failures. Study expert system of engine fault diagnosises that it can locate fault timely and accurately, and enhance efficiency. However, the traditional expert system has shortcomings so as inefficient inference and poor self-learning capability. The fuzzy logic and traditional neural networks are combined to form fuzzy neural networks, they are established a model of fuzzy neural network (FNN) of fault diagnosis, and that the model is applied to engine fault diagnosis, complementary advantages, to effectively enhance efficiency of inference and self-learning ability, its performance is higher than the traditional BP network.
Multi-Manual Emergency Escaping System of Air Control Bus Door Based on Driver and Passenger Manipulation
Authors: Qi Zhi Wei , Wang Ting Jun , Ma Zhao , Chen Xiao , Shen Bi Jun
Published: November 2012

For controlling emergency escaping by a bus driver in the case of air control door cannot be opened normally, the paper presented a multi-manual emergency escaping system of pneumatic bus door. Bus driver and passenger can control doors expediently. The pneumatic circuit of the system and its overall arrangement is discussed. A manual control device with special valve core structure is designed. The working performance of the manual shift directional valve is analyzed. The results indicate that driver and passengers can control the bus doors under the state of abnormal condition via manual control devices in series connection rapidly. Driver and passengers control is without mutual interference. Manual shift directional valves are convenient, reliable and fast.
Study on Regenerative Braking Control Strategy
Authors: Wang Tian Li , Chen Chang Hong , Zhao Qing Jie , Yu Ying Xiao
Published: November 2012

Based on the analysis about the front and rear braking force distribution curve and the motor anti-drag braking characteristic, the Regenerative Braking Control Strategy which can maintain the capacity of the motor braking energy recovery and make the front and rear braking force distribution closer to the ideal distribution state is proposed. Create a control model. It is simulated by AVL-cruise. The results show that the new control strategies can improve the utilization of ground adhesion coefficient and braking stability.
Application Research of Adaptive Control Techniques in the Hydraulic Torque Converter's Buffer Locking Process
Authors: Jin Yi , Liu Wei Ping , Liu Xi Xia
Published: November 2012

When hydraulic torque converter is applied in hydraulic transmission-vehicle, control precision in buffer locking process of hydraulic torque converter was easily disturbed by friction plate's abrasion, changed buffer slope and other factors, which accordingly caused Impact to transmission system of vehicle. In this paper, adaptive control techniques was applied in buffer locking process as a solution to improve control precision, on basis of Back Propagation (BP) Neural Networks and Genetic Algorithm (GA). In the research, the BP Neural Networks and PID control algorithm was designed to control buffer locking process and Genetic Algorithm was applied to optimize the neural network parameters. Based on AMEsim and Matlab/simulink, joint simulation was carried out. The simulation result shows that Adaptive Control Techniques based on GA-BP can control the locking process fast and accurately.
Research of Automatic Tracing Control for Infrared Intelligent Lunar Vehicle
Authors: Qian Xin , Zang Hua Dong
Published: November 2012

In intelligent lunar vehicle’s infrared tracing automatic control, reflective infrared sensor array is adopted for detecting the path. By processing the sensor data and relative error through the detection of nonlinear analog A/D sampling, real-time processing and non-linearizing the control parameters in the PID variable scale incremental control algorithm, closed-loop control would be realized. In addition, incremental PD formula can be derived by fuzzy control technology, while the sensitivity and stability of the vehicle tracing can be improved by adjusting parameters in programming. It proved that this method can effectively shorten response time, reduce random interference, optimize the tracing line, eliminate oscillation and improve the mobility.
Magnetic Bearing Rotor Vibration Analysis Based on the Harmonic Wavelet Package Algorithm
Authors: Li De Guang , Liu Shu Qin
Published: November 2012

Analysis of the magnetic bearing rotor vibration is the base of the optimizing design, supervise and diagnosis of the magnetic bearing. Harmonic wavelet package was used for the analysis of the vibration signal, and the 3 dimension time-frequency domain energy map was constructed, then the analysis of the rotor vibration became convenient. Via analysis of the time-frequency map, the vibration in each time and each frequency was obtained, and the supervise and the diagnosis of the rotor can be realized.
FPGA-Based Research on the Constant Temperature Control System of Air Source Water Heater
Authors: Xu Jin , Tian Ke Hang
Published: November 2012

In this paper, a kind of constant temperature control system of air source water heater will be shown, which is mainly consist of FPGA, temperature sensor, cold and hot water electromagnetic valve, and the parts setting temperature and displaying real-time temperature. FPGA is used to implement PID algorithm and produce PWM wave to control the rotation rate and finally adjust the opening of regulating valve. The experiments show that FPGA has a very good real-time performance and reliability in constant temperature control system.
Mobile Robots' Wall-Following Controller Based on Probabilistic Spiking Neuron Model
Authors: Wang Xiu Qing , Hou Zeng Guang , Tan Min , Wang Yong Ji , Xie Fei
Published: November 2012

This paper focuses on the third generation of neural networks- Spiking neural networks (SNNs), the novel Spiking neuron model- probabilistic Spiking neuron model (pSNM), and their applications. pSNM is used in mobile robots' behavior control, and a novel mobile robots' wall-following controller based on pSNM is proposed. In the pSNM controller, Spiking time-delayed coding is used for the sensory neurons of the input layer and pSNM is used for the motor neurons in the output layer. Thorpe and Hebbian learning rules are used in the controller. The experimental results show that the controller can control the mobile robots to follow the wall clockwise and counterclockwise successfully. The structure of the controller is simple, and the controller can study online.
A Method for Components Fault Model Building
Authors: Liu Rui , Zhou Jun , Li Peng
Published: November 2012

This document explains and demonstrates how to build a fault model of any component based on the simulator model. Function unit was considered as the minimum unit when building fault models. The fault model was defined as a uniform style. An example about the control actuator was illustrated. The fault model building method presented in this paper was easy to operate and was of universal appliance.
Adaptive Control System of Milling Machine
Authors: Song Peng , Xu Guo Kai , Liu Chang Hong
Published: November 2012

In this paper, the discrete model reference adaptive control (MRAC) system of milling machine is discussed. Firstly, the discrete Model of milling machine is presented. Based on it the design of the adaptive control is made, and the rule of discrete model reference adaptive control is proven. The results of simulation show that adaptive control has favorable performances.
Idle Speed Control for GDI Engines with Interval Time-Delay
Authors: Li Xue Jun , Hong Wei , Su Yan
Published: November 2012

The gasoline direct injection (GDI) engine is a highly non-linear and a delayed system. The engine modle with time-delays is derived. The delays consist of an intake to torque production state delay and a network -induced interval delay. Base on the Liapunov-Krasovskii function, the criterion of interval delay control system is proposed, which ensure the idle speed control system is stability as well as robust. The simulation results show that the H∞ control has good robustness,which improves the stability of the idle speed of the GDI engine.
Test System for Airborne ILS Navigation Apparatus Based on Artificial Intelligence and Virtual Instrument
Authors: Shi Yan Bin , Jian Yuan Fang , Qiu Shi Yong , Li Yi Jun
Published: November 2012

ILS (Instrument landing system) is one kind of the important airborne navigation systems. The performances of the airborne ILS navigation apparatus are vital to safeguard the safe landing of the aircraft. This paper reviews the basic work process of the ILS, summarizes the test theory from the artificial intelligence and virtual instrument view point, discussed the test system construction, and presents the detail design thought. Particular attention is paid to the failures isolating problems. It is shown that test system for airborne ILS navigation apparatus based on artificial intelligence and virtual instrument improved the accuracy and reliability.
Design and Implementation of the Control System for Two-Wheeled Self-Balancing Vehicles
Authors: Dai Min , Wang Jian , Sun Xiao Gang , Hu Shuang , Jia Jun Xiang
Published: November 2012

A control-system design for a two-wheeled self-balancing vehicle is discussed in this paper. We have developed a low-cost hardware platform based on AVR MCU, accelerometer sensor and gyroscope sensor, for which the critical circuits, such as sensors and motor driver, are introduced. The control strategy operates by two steps: a) securing the real-time vehicle posture by integrating the data from accelerometer and gyroscope sensors; b) using a closed-loop PID controller to keep the vehicle balanced. This control system is applied to a prototype two-wheeled self-balancing vehicle, whose performance has turned out to be a satisfaction.
Robust Nonlinear Control of Electric Power Steering System Based on Lyapunov Redesign
Authors: Huang Xi Chang , Zong Zhi Jian , Liu Zhong Tu
Published: November 2012

Based on the dynamic characteristics of EPS, whole vehicle and tire, the dynamic equation of the EPS system was established. The Krasovk’s method was used to obtian the candidate Lyapunov function for the EPS system. A nonlinear control for EPS system considering parameter uncertainty was presented by Lyapunov redesign approach. The results were obtained from simulation based on Dymola, where is shown that Control law of EPS have the robust performance.
The Dual-Mode Maximum Power Point Tracking Control Method Based on Improved Variable Step Size
Authors: Yuan Qi Ping , Liu Yu Fei , Chi Ting Ting
Published: November 2012

In the entire PV system, the maximum power point tracking (MPPT) has become an important part of the essential, the maximum power point tracking can improve the output power of photovoltaic power generation system as to improve the overall system power. Constant Voltage Tracking (CVT), Perturbation and Observation (P&O), incremental Conductivity, Short circuit control, Hysteresis comparing are the most commonly used methods. Due to a variety of methods have their advantages and disadvantages to each other, to improve efficiency, control accuracy, speed up the response, this paper, put up a program based on reforming the progress in dual-mode maximum power point tracking and this program can be faster and more accurate to find the maximum power point in the current environment, also reduce the oscillation near the maximum power point and improve the efficiency of solar photovoltaic grid-connected system.