bluuebunny/crossref_metadata_2025 huggingface dataset:
The Research of Radio Monitoring System for Army Digital Force Training
Authors: Yang Xin Wang , Huo Jing He , Yang Jian Kang , Liu Yu Jun
Published: August 2014

The paper research the radio signal monitoring and analysis of digitized for Army Digital Force Training. aimed at scientific planning and the use of spectrum resources, developed a set of visual assistance decision support tool based on component-based and soft bus design method, it will provide support for digital forces training and research accused the rules and characteristics the use of communications equipment in a complex electromagnetic, in addition, it provide technical means for radio direction-finding and localization.
Keywords: Digital Force; radio monitoring; software bus
Vehicle Trajectory Prediction Based on Road Recognition
Authors: Shao Qing Bo , Guan Hsin , Jia Xin
Published: August 2014

Predicting vehicle trajectory accurately is a crucial task for an autonomous vehicle. It is also necessary for many Advanced Driver Assistance System to predict trajectory of the ego-vehicle’s. In recent years, some vehicles trajectory prediction algorithm is mainly based on a simple Motion Model. This paper puts forward a method which combines road recognition and the hypothesis of steady preview and dynamic correction for trajectory prediction. In the road recognition algorithm, both methods of Kalman Filter (KF) and Recursive Least-Square (RLS) work well to estimate the road slope and road friction coefficient.
Morphology-Controlled Synthesis of ZSM-5/MCM-41 Composite Zeolite
Authors: Zhang Hai Rong , Liu Hong Yan , Jiang Yu , Tao Xun , Chang Xiao Hua , Zhang Wen Shan , Wang Bo , Liu Jian Hong , Guo Yong
Published: August 2014

ZSM-5/MCM-41 composite zeolites were synthesized by a two-step hydrothermal crystallization procedure using binary templates of cetyltrimethylammonium bromide (CTAB) and tetrapropylammonium hydroxide (TPAOH). The effects of aluminum content on zeolite particle morphology and structure were studied. Powder X-ray diffraction (XRD) results showed that the composite zeolites are of both MCM-41 structure and zeolitic MFI structure. SEM results showed that the morphology of composite zeolites is significantly influenced by the aluminum content.
A Survey on Moving Target Tracking in the Intelligent Visual Monitoring System
Authors: Li Meng Xin , Su Gao Ling , Hou Jing , Zheng Dai
Published: August 2014

Moving target tracking is the key part of intelligent visual surveillance system. Among the various tracking algorithms, the Beysian tracking algorithms and the kernel tracking algorithm are two algorithms that frequently used. The Beysian tracking algorithms mainly conclude Kalman filtering algorithm, extended Kalman filtering algorithm and particle filtering algorithm. Mean Shift is the most representative algorithm of the kernel target tracking. In this survey, the status and development of target tracking algorithms has been studied more extensively with providing a few examples of modified tracking algorithms. Then a comparison was presented based on the limitations and scope of applications. Finally, the paper showed further research prospects of moving target tracking are introduced.
An Improved Adaboost Method for Face Detection
Authors: Zhang Zhi Xun , Wang Juan , Wang Yong Dong
Published: August 2014

Existing Adaboost methods for face detection based on particle swarm optimization (PSO) do not consider that PSO suffers from easily trapping in local optimum and slow convergence speed. This paper presents an improved Adaboost method for face detection to solve this problem. In this method, self-adaptive escape PSO (AEPSO) is introduced into conventional Adaboost face detection, meanwhile, Haar-Like rectangular features are represented by particles, so that features selection and classifiers construction could be resolved by using AEPSO. Results of simulation based on Matlab indicate the improved method obtains better detection performance.
Automatic Test and Fault Diagnosing System of XX Airborne Navigation and Control System
Authors: Yuan Tao , Liu Mei Jie , Wang Yong Jun , Li Fu Rong
Published: August 2014

According to the design and development process of XX Airborne Navigation and Control System, we analyzed the main technology characteristics of design and development for hardware platform, software platform and adapter, and then put forward the realization proposal.
Design of a Fast Resistance Sorting Instrument Based on STC Microcontroller
Authors: Yuan Jing Ping , Yu Fen Fen
Published: August 2014

This paper introduces a kind of resistance sorting instrument with fast speed, high precision and wide range based on microcontroller STC12C5A60S2, including its work principle and composition of software and hardware. Resistance test method of the sorter’s low and high resistance segment is elaborated in the paper. The resistance sorter is an intelligent instrument, which is designed for grouping and filtering of finished resistance on the production line.
Design of Automatic Milking Controller
Authors: He Ping , Li Ying , Wang Meng , Liu Chao
Published: August 2014

Milking machine automatic control is not only an important part for dairy farm to achieve of digital management, but also one of the key development of animal husbandry. Milking machine automatic control can improve production efficiency of dairy farm and quality of raw milk. First, the need of the milking factory is known, and an automatic control requirement is developed. Secondly, an AVR microcontroller core AT90CAN128 of ATMEL, used as the centre of the controller. And then, the hardware system is designed in several modules. In the last, the software of the controller is designed in detail based on certain need. The project uses the research method of combination of experimetal research, analytical studies and lessons learned. First the paper designs the hardware circuit board and the software development of the milking machine controller. Then through debugging of the physical machine, the paper implements the function of milking automatically and cleaning automatically. The results has reached the milk production expectations, and achieved good effects.
Development of the Portable Field First-Aid Diagnosis Bed
Authors: Du Zhen Jie , Gao Wan Yu , Liu Chang Jun , Yang Jian , Liu Sheng Jun , Sun Xiao Jun , Tian Feng
Published: August 2014

This thesis introduces a type of portable field first-aid diagnosis bed used in field medical aid station. This bed can provide a rescuing platform for the field rescue and diagnosis so as to improve the mobility and treatment level of our army's field medical aid station.
Experiments and Analyses of Horizontal Earth Electrodes’ TGR on Various Grounds
Authors: Qu Xin Bo , Zhou Bi Hua , Fu Ya Peng , Li Yan Xin , Wang Tao
Published: August 2014

In this paper, a new type of portable horizontal grid earth electrode has been designed for mobile equipments. With the impulse ground measurement system, the responses to double exponential pulse current of five earth electrodes in two arrangements have been tested on soil, grassplot and cement floor respectively. After filtering and calculating, the curve of transient grounding resistance (TGR) in time domain can be gotten. And in the end, some conclusions have been drawn. The analysis of discharging capacity of horizontal grid earth electrodes in time domain has great significance in the design of mobile equipments’ earth devices.
Side Effects on Enhancing Chemical Herbicides to Control Proposal
Authors: Gao Fang Hong
Published: August 2014

Herbicide save work time saving, convenient and quick, has become a means of agricultural production is necessary. Herbicides, however, is a double-edged sword, both can effectively eliminate the weeds, and there will be some side effects, some damage to the crops. Herbicide is the current side effects after spraying herbicide, make crops 7 to 15 days is not long, affecting the normal development of crops and mature, causing recessive production, below is how to strengthen the side effects of prevention and control, chemical herbicides to provide some reference Suggestions.
Simulation Research on Optical Performance of Multicrystalline Silicon Texture Structure
Authors: Zhang Fa Yun
Published: August 2014

The finite element model of double etching pits was established, optical performance of multicrystalline silicon wafer before and after etching was simulated by RF MODULE of COMSOL Multiphysics version 3.5a. Optical characteristic of unetching wafer and acidic textured were compared. It is indicates that acidic textured (double etching pits) has low reflectivity, high power flow Y component , the better light trapping. When the wavelength is 600nm, the maximum and minimum value of surface electric field Z component of acidic textured are 1.9 times and 1.4 times respectively than that of unetching wafer, and two extremum value of surface magnetic field Z component are 2.1 times and 1.9 times respectively than that of unetching wafer. Numerical simulation results of Multi hole model are closely with experimental values, which can guide the practical production.
Design and Development of an Omni-Directional Mobile Robot for Logistics
Authors: Gao Zhen Qing , Chen Hong Bin , Du Yan Ping , Wei Li
Published: August 2014

In view of the common oriented logistics robot is difficult to adapt to the complex and changeable requirements of modern logistics environment, a highly mobile logistics robot is developed based on the omni-directional mobile mechanism. In the course of the study, the mechanical body of omni-directional mobile logistics robot is designed by the three Swedish wheels structure, then the forward and inverse kinematic is analyzed s, and the result is simulated numerically for validating, finally a set of physical prototype is developed. The development of logistics robot with omni-directional mobile capability can improve the flexibility of logistics transmission equipment, increase the operational efficiency of logistics system and intelligent degree. It has a certain value for the related research for the application field of the robot and logistics equipment field.
Application of Single Neuron Adaptive PID Controller in Flow Control System
Authors: Kang Ze , Yin Cheng Qiang , Teng Shao Min
Published: August 2014

Oxide concentration at reactor inlet is one of the most important factor effecting the quality of ethylene oxide concentration. A control method with adaptive PID of single neuron is propose using the parameter self-learning with adaptive PID controller of single neuron for the oxide flow control system. The simulation results show that this design scheme has a better dynamic performance than traditional PID scheme to verify the feasibility of this method.
Performance Research on the Secondary Hydraulic Transmission System under Variable Pressure Rail
Authors: Zang Fa Ye , Wang Yong
Published: August 2014

Hydrostatic transmission with secondary regulation can regenerate inertial and gravitational energy of load. Based on deeply analyzing the working principles and energy-saving theory of the secondary regulating transmission system under variable pressure rail, regenerating the transmission system’s inertial energy by controlling rotation speed was put forward. Considering large changes of the parameters of the transmission system and its non-linearity, a fuzzy-neural network control was adopted, and the mathematical model of the system was established, then the simulations of the performance of the transmission system has been conducted. The conclusion was made that the inertial energy can be reclaimed and reused,and the self-adaptive ability and controlling performance of the secondary hydraulic transmission system is improved.
Three-Motor Synchronization Control Strategy Based on the New Speed Sensorless Active Disturbance Rejection Control
Authors: Li Hui , Liu Xing Qiao , Li Jing
Published: August 2014

A new control method based on speed sensorless active disturbance rejection control (SS-ADRC) is proposed for overcoming the shortage of traditional PID control method in the application of the multi-motor synchronization system. By using the extended state observer (ESO), the internal and external disturbances in the system are compensated. According to the data driving principle, the formula of speed identification is inferred. Disturbances can be estimated online through ESO, and then speed value can also be identified by ESO. The simulation results show: the control system have strong decoupling ability, accurate speed identification ability, and good dynamic performance.
Design and Analysis of an Under-Actuated Self-Adaptive Mechanical Hand
Authors: Xia Yan , Liu Rong Qiang , Guo Hong Wei , Deng Zong Quan
Published: August 2014

A kind of under-actuated self-adaptive mechanical hand was developed in this paper. This mechanical hand consists of three 3-dof under-actuated fingers, and four motors are adopted to drive nine joints. The hand has self-adaptation to targets in different shapes and sizes and it can perform actions, such as folding, unfolding and grasping. In addition, a quasi-statics model of the 3-dof under-actuated finger was established in this paper. The relationship equation between the grasping forces and the driving and damping torques was obtained, and the influence of target size and driving torques on the grasping forces was also discussed. The results of the simulation analysis were shown to verify the correctness of the quasi-statics model.
A Wireless Control System for an Expanding-Extending Robotic Endoscope
Authors: He Shu , Yan Guo Zheng , Chen Wen Wen
Published: August 2014

Robotic endoscope is one of the development directions of the noninvasive medical instrument. According to the feature and requirements of an expanding-extending robotic endoscope, a wireless control system was designed which included the following four parts: human-machine interaction PC, external communication box, robotic internal control system, and portable video receiver. Combining with the characteristics of the mechanism of the robot, a double feedbacks control was adopted to control the three coreless DC motors of the robot. A communication chain from upper-computer to robot was designed to control the robot remotely. At last, experimental tests in simulative pipeline and in vitro intestinal tract were carried out, and the results showed that the control system could control the robot effectively.
Research on Control by Sliding Form of Variable Structure in Follow-Up System
Authors: Fang Na , Huang Han Lin , Li Feng , Deng Zhi Min
Published: August 2014

The article designs a discrete-time sliding mode controller based on reaching law according to the follow-up system’s largely changed loads and strict control criteria for the position. It analyzes the different results by comparison of PID and sliding form of variable structures. Various results from simulation test shows that the control by sliding form of variable structures has better ability to guard load disturbance and parameter robustness.
Controlling Chaos in Automobile Suspension System with Nonlinear Feedback Controller
Authors: Chen Li Jie
Published: August 2014

To improve the vehicle comfort, Magnetorheological damper is installed on the vehicle suspension system. So the system with hysteretic nonlinearity is a typical nonlinear system. First, the behavior of system under the periodic excitation force is analyzed, and the possibility of chaos is proved in the paper. Then, with piecewise-quadric function employed, the nonlinear feedback controller can be used to control the chaos. At the same time, Melnikov’s method is used to gain coefficient of controller. Numerical simulation shows that this method can the effectively guide chaotic motions toward regular motions. This control method is quite simple and effective without affecting the system properties. The results may supply theoretical bases for analysis and optimal design of vehicle suspension systems.
Research and Application of CAD/CAM Technology in NC Machining of Part with Complex Surface
Authors: Wan Jin Gui , Ding Wei
Published: August 2014

The development of modern advanced manufacturing technology greatly relies on the CAD / CAM technology. Many pieces of computer software with CAD/CAM function have been developed rapidly in recent years. Unigraphics (UG) is one of the outstanding representatives. It has a powerful design and CNC programming function, and CAD/CAM seamless connectivity. As an application example, a mouse model part which has complex surface was designed and trial-manufactured with CNC machine. First, the 3D model of the part was created in the modeling module of UG software. Then, the process scheme was developed after analyzing. In the manufacturing module of UG software, the NC machining parameters were set according to the processing requirements, the tool paths were generated, edited and checked, and the NC codes were generated by post processing. And then, the NC machining was simulated in YULONG software. Finally, the part was manufactured in a 3-axis CNC milling machine. It has desirable shape and high accuracy. The results show that UG has a perfect CAD/CAM function. The CAD/CAM technology based on UG makes the NC machining of complex surface part very convenient. It improves the efficiency of design and machining, shortens the manufacturing cycle, and reduces the cost, which reflects the importance of the CAD/CAM software in NC machining. The method described in this paper can provide valuable reference for processing similar parts, and it is also useful for related study.
Research on Speed Control Problem of Industrial Sewing Machine System
Authors: Zhu Jian Feng , Hua Peng Xiang , Liu Jun Bang , Wang Xin , Wu Di Min
Published: August 2014

This paper presents a new method of braking control related to the brushless DC Motor control industrial sewing machine system by analyzing the braking method of brushless DC Motor and the characteristics of control method concerning industrial sewing machines system. With the RENESAS SH7125 MCU as the core controlling, this paper analyzes from the both aspects of speed regulation and braking control, adopts oscillating circuit frequency input method for frequency control, reversing locking brake by detecting needle position signal. Practice proves that the method has achieved good effect, met the control requirements of the industrial sewing machine system.
Research on Smart Home Controlling System Based on Fuzzy Data Fusion Theory
Authors: Wang Chao , Tan Tao , Yin Xuan , Chen Nan , Xiao Tong Xin
Published: August 2014

To solve the unstable and insufficient energy supply problems in Smart Home Controlling System and improve the he cooperation between several sensors with different functions and parameters, a new energy supply module based on the vibration in the air and the fuzzy data fusion theory applied to the cooperation among sensors are discussed in this paper. The test result proves that this kind of module works well to provide enough energy preservation for the whole WSN system and data fusion theory enhances the credibility and preciseness of the surveillance result.
The Method Research of Grey Neural Network Control Based on Data
Authors: Li Yong Wei , Ye Zhi Gang , Huo Chao Chao
Published: August 2014

A control process based on data often contains large amounts of sample data. The accuracy of system is always influenced by the randomness of the initial data when the RBF neural network is used to predict model. However, the grey accumulated generating operation (AGO) can reduce the effect of randomness of the initial data, which is able to make data more regular. Based on the two points above, a new kind of method is proposed, which is called grey RBF neural network. This method not only can reduce the randomness, speed up the network convergence, but also improve the modeling accuracy. The grey RBF neural network can be proved to be feasible and effective by applying the grey RBF neural network to the synthetic ammonia decarburization process, and comparing the simulation results with the results which was only using RBF network.
The Design of Spraying Manipulator Control System in Mines
Authors: Yu Mei , Liu Guo Wei , Kong Bing
Published: August 2014

In view of the present mining spraying manipulator operation is not flexible ,spraying effect is poor, susceptible to interference and other issues, this paper studies and realizes a kind of low cost, strong practicability of spraying manipulator control system. Using S7-200PLC and 2MA860H drive to control the 86BYG250A stepper motor open-loop control system, and the precise position control is realized. By controlling of the x-y axis mine spraying manipulator. Validate the system operation is simple, highly efficient and stable, energy conservation and environmental protection, strong anti-jamming capability, it can be widely used in all kinds of mining equipment.
Research on the Temperature Control Algorithm of the Poultry Farm
Authors: Niu Xiang Jie
Published: August 2014

The environment in poultry farm is a complex system with time-varying, nonlinear and pure lag. The traditional temperature control algorithm is difficult to obtain good control effect. In order to solve the issues of larger overshoot, vibration, low control accuracy and so on, this paper presents a fuzzy-PID estimated control algorithm. Firstly, the system identification is used to get more accurate system model. Then, using the fuzzy control rules improves the system stability precision, reduces the impact of the delay on the system and improves the adaptability of the system. Simulation results show that the proposed control strategy has a fast response, small overshoot, robustness, high control precision and so on. It provides a reference for intelligent control design of poultry temperature.
LED Lights Wireless Intelligent Control System Based on LabVIEW
Authors: Li Xue Qiang , Qian Ping
Published: August 2014

Because of LED lights require long-term monitor, the paper presents a remote intelligent control system based on LabVIEW. The system set up by the hardware and software simulation is completed. First collected working status and environmental parameters of the system by ZigBee wireless sensor network. Then transfer data to a remote monitoring center via WiFi. The functions including data real-time display, analysis and storage can be realized by LabVIEW. Using the information collected corresponding control can be adopted, the power and brightness of LED lights can be adjusted, etc. Experiments show that the system is stable, simple to operate, easy to wiring and suitable for the application of LED Street light at present.
Research on Multilevel Mobile Sensor Network Control Based on Probability Coverage Model
Authors: Zeng Xia Ling , Zhang Lin
Published: August 2014

The control of mobile coverage model is the focus research of wireless sensor network. If a node can balance the network load according to the network needs, which can greatly reduce the consumption of the network, improve the network transmission efficiency and prolong the network life cycle. Accordingly, this paper uses probability coverage principle to improve multilevel mobile sensor network model, which improves the mobile sensor network coverage and enhances the energy-saving effect of the network nodes. In order to verify the effectiveness and reliability of the multilevel mobile sensor network model, this paper uses MATLAB simulation platform to test the performance of network, and design the control program of node region division and moving path for mobile sensor network, which realizes the node automatic classification and moving. Finally, this paper utilizes the Plot curve of MATLAB to obtain the coverage rate of multilevel mobile sensor network and the curve of energy saving changing with the number of nodes. It provides a theoretical reference for the research on mobile sensor network.
The Study and Analysis of Condensate System of Control Strategy Based on Automatic Startup and Shutdown Control System in Supercritical Unit
Authors: Du Rong Hua , Wang Li Hong , Zhang Guo Bin , Zhang Peng Tao , Yin Jian Hua
Published: August 2014

Through the introduction of the condensate system in 350 MW supercritical unit,we analysis and study the whole control strategy of condensate water based on automatic startup and shutdown control system.We realize condensate system of automatic startup and shutdown control and can automatically adjust deaerator level and pressure of condensation water pipe. The results is that the whole control strategy of condensate water based on automatic startup and shutdown control system is very good in controlling quality and has a good application value.
0 Preface
APS is a control center of startup and shutdown automatically according to the set procedures ,which is to control each equipment/system cooperated with Data Acquisition System (DAS), Boiler Turbine Sequence Control System (SCS), Modulating control system (MCS) and Furnace Safeguard Supervisory System (FSSS), steam turbine digital electro-hydraulic control system (DEH), Coordinated Control system (CCS), Electric Control System (ECS), Automatic Voltage Regulation system (AVR) and so on. [1]
Research and Analysis of Discrete PID Controller Parameters’ Optimization Based on Particle Swarm Optimization Algorithm
Authors: Huang Zhan Jun , Wang An Na , Lei Cui
Published: August 2014

Currently, PID controllers have been widely used in industrial control. And computer control systems are widely used in the field environment. How to design a discrete PID controller which has a good control performance is very important for existing control objects. In this paper, particle swarm optimization and quadratic performance index are used to optimize the control parameters of the discrete PID controller. The optimized results are given at last. By simulation studies and analysis, the optimal parameters of the PID controller are found by particle swarm optimization algorithm, and the quadratic performance index has a good effect on optimal control.
Design of Intelligent Obstacle Avoidance Car Based on FPGA
Authors: Jiang Ming , Zhang Jian Min
Published: August 2014

This design uses the Cyclone series of FPGA chip as the core of the control unit of the intelligent car. Besides, the system also includes power supply, DC electric machineries, steering, ultrasonic sensors, wireless data transceiver module and other circuits. According to the movement direction and movement status of the intelligent car to realize the function of monitoring and remote control, what is more, the FPGA will achieving the measurement data to process, in order to implement the function of automatic avoidance of road blocks. Meanwhile, the LED real-time display the ultrasonic distance measurement.
Development of an Automotive Electric Window Control System Based on CAN Bus
Authors: Chen Xu , Yin Xiao Feng , Yang Qi Chang , Lu Han
Published: August 2014

An electric window control system based on low-speed CAN bus has been developed to reduce the wiring harness of vehicle control system, improve the system reliability and cut overall costs. On the basis of requirement analysis of the control system, a CAN application layer communication protocol has been defined. The electric window control system has been designed using Freescale 16-bit single chip microprocessor MCS12DP256 as central processing unit, and the control software has also been developed, in which an integral algorithm was used to realize the anti-pinch function.
Design of PID Temperature Control System Based on BP Neural Network
Authors: Meng Zhi Yong , Yu Guo Qing , Jin Rui
Published: August 2014

Based on BP neural network PID controller has the ability to approximate any nonlinear function, can achieve real-time online tuning PID controller parameter . Through the system simulation analysis, simulation results show that the BP neural network tuning PID control than traditional PID algorithm and BP network algorithm has a greater degree of improvement, the system has better robustness and adaptability, its output can also achieve the desired control accuracy through online adjustments. Suitable for temperature control system.
Optimization Control of the Ball Mill Mechanical Equipment
Authors: Cheng Xiao Hong , Li Qi
Published: August 2014

The current system for thermal power system operation stability ball mill, poor uniformity of pulverized coal that often occurs overpressure, breaking coal, over-temperature phenomena such as coal or blocking rational analysis, the use of predictive control, self-optimizing control the principle of the system is to optimize the steel mill, and combined with its control system elaborated feasibility optimized implementation.
Simulation Research of the Direct Driving Active Mass Driver System
Authors: Liu Jun Long , Dai Jing Hui
Published: August 2014

In order to solve the problem of the traditional AMD(Active Mass Drive system), the DDVC(DAMD,Direct Driving Volume Control) AMD is presented in this paper. Firstly, the mathematical models of the electric motor, hydraulic power system and the hydraulic actuators are constructed respectively. Then, the whole model integrated with different parts is analyzed. Finally, the critical factors which can affect the dynamic characteristics are introduced by using numerical simulation. The results show that the new system has a good performance.
Research on Application of Fuzzy Controller Based on Dual-Thumb Pneumatic Flexible Robot Hand
Authors: Wan Shao Song , Cao Jian , Yan Cong
Published: August 2014

Fuzzy rules and its inference mechanism are the assurance of achieving feature fusion. Conventional Proportional Integral Derivative (PID) control is often used in present industrial field. Because the control parameters are fixed, the tuning results are difficult to meet the demands and the system is unstable or even out of control. This paper has a design and analysis on the dual thumb pneumatic flexible robot hand base on the active flexible bending joints we have developed. The flexible joint is composed of four elongation artificial muscles with parallel arrangement. The robot hand has five multi-actuated fingers each with three flexible joints. In this paper, Matlab is used to confirm that the fuzzy control system has good adaptability and anti-jamming capability.
Aircraft Sequencing Method for Staggered Parallel Runways Approach
Authors: Pan Wei Jun , Wang Xuan , Huang Chen Yu
Published: August 2014

Most research about the approaching aircraft sequencing is for single runway approach or standard parallel runways approach. Little of research is for the case of staggered parallel runways approach. In this paper, a mathematical model of aircraft approach sequencing is established for the case of staggered parallel runways approach, and also this model is optimized with improved genetic algorithm. This model is simulated with the improved genetic algorithm both for cases of non-staggered runway approach and staggered runway approach, and the result shows that, comparing with the situation of non-staggered runway, the delay time in the case of staggered parallel runways approach decreases by 1.6 minutes, and the fitness increases by 0.0394. It proves that, in a certain extent, staggered parallel runways can reduce the minimum interval between arrival flights, thus increase the capacity of parallel runways.
Non-Linear Analysis of a FGM Cantilever Beam Supported on a Winkler Elastic Foundation
Authors: Li Qing Lu , Shao Qian Hong
Published: August 2014

In the present study, nonlinear bending problem of functionally graded material (FGM) cantilever beams resting on a Winkler elastic foundation under distributed load are discussed. Based on the large deformation theory and considering the axial extension of the beam, the equilibrium equations with geometric nonlinearity of FGM beams subjected to distributed load are established. In the analysis, it is assumed that the material properties of the beam vary continuously as a power function of the thickness. By using shooting method, the nonlinear boundary-value problem is numerically solved as well as the non-linear bending characteristic curves of the deformed beam versus the load are presented. The effects of material gradient property and foundation stiffness parameter on the bending deformation of the beam are discussed in detail.
Fuzzy Control of Tracked Vehicle’s Semi-Active Suspension System Based on LMS
Authors: Gao Xiao Dong , Gu Liang , Guan Ji Fu , Gao Jun Feng
Published: August 2014

A half tracked vehicle model was established based on LMS, a co-simulation interface between control algorithm of MATLAB and physical model of LMS was set up. Fuzzy controller with PID regulator was proposed to achieve controlling strategy based on half tracked vehicle model. With suspension stroke and its change rate as input parameters of fuzzy controller, the dynamic adjusting parameters of PID controller are acquired through fuzzy controller, then a semi-active suspension vehicle adaptive control system was formed. The simulation result shows that the adaptive control system can effectively coordinate the contradiction acceleration and dynamic travel in different bands, the ride comfort tracked vehicle is significantly improved.
The Design of a Novel High Frequency Digital Valve Based on Rotating and Differentially Parallel Control
Authors: Du Heng , Lin Jian Xin , Guo Fan , Ma Chong
Published: August 2014

Due to the ability of the strong anti-interference and directly digital controlling, digital valve has great applications and developing potential in the filed of high frequency response digital servo valve. Base on the rotating structure, a novel high frequency digital valve which can be rotated and controlled in differential parallel way is designed, and the frequency characteristic of electrical signals converting into rotation signals is developed through differential and parallel control of valve spool and valve sleeve. Meanwhile, the hydraulic natural frequency of servo-screw mechanism is further enhanced by the control way of hydraulic half-bridge type A in both chambers of valve spool, and corresponding mathematical model and control block diagram are built. Theoretical analysis concludes that the frequency response characteristic of digital valve is developed significantly. In addition, the multi-gain of rotation angle and axial displacement of valve spool is realized through milling the spiral grooves with different helix angles in the inside of valve sleeve, which improves the flow adaptability of high frequency digital valve effectively. Compared to traditional rotary digital valve, the designed novel digital valve that can be controlled by rotating differentially and parallel has greater advantages in high frequency response and flow adaptability, it provides a new scheme for engineering applications of high frequency digital valve.
Study on Welding Path Planning of Welding Position Flock for Welding Robot Based on Improved Genetic Algorithm
Authors: Lv Hong Wei
Published: August 2014

With full rotation articulated ABB-IBR140-M2000 robot with six degrees of freedom used as welding robot, the exploring of efficient complete coverage of welding position flock is an important way of improving the performance of welding robot. Making use of improved genetic algorithm, in which the best father generation is saved and using ordered cross and reverse ordered mutation to constitute filial generation, and this method makes sure that the algorithms is convergent. The complete coverage of welding position optimization mathematic model whose objective is the minimum distance is established, making use of the improved genetic algorithm to solve the problem, an example is analyzed in detail, and the result shows that the algorithms is convergent and efficient.
Loading and Unloading Schedule of Automatic Storage/Retrieval System
Authors: Lv Hong Wei
Published: August 2014

Based on object oriented timed place Petri net (OOTPN) model, the study on the loading and unloading schedule of automatic Storage/Retrieval System is given. The OOTPN model is established through dividing the model into six sub models according to the class of AS/RS elements, that is: In-Buffer model, In-Plant model, In-Elevator model, Out-Elevator model, Out-Plant model and Out-Buffer model. The six sub models. Furthermore, the deadlock analysis problem of the process is also discussed, and the maximally permissive feedback control strategies for deadlock avoidance are finally proposed.
A Route Planning’s Method for Micro UAV Based on Improved Genetic Algorithm
Authors: Lu Ling , Zhang Hua
Published: August 2014

According to micro UAV is susceptible to wind environmental impact during the flight, this paper puts forward a kind of ergodicity track strategy for return path re planning. By adding coverage flight and sacrificing path to achieve safe recovery of voyage. A genetic algorithm is used to solve the problem, and introducing dynamic penalty function to improve the fitness function, effectively reduce the search space. The simulation results show that the method can generate safely track, and satisfy the path constraints.
A New Method of 6-DOF Serial Robot’s Trajectory Planning under Multi-Constraints
Authors: Zhao Yong Ting , Zheng Bin , Ma Hong Lin
Published: August 2014

This paper proposes a new method of 6-DOF serial robot’s trajectory planning. Ensuring to satisfy the physical constraints of space conditions, the robot’s trajectory is interpolated in the Cartesian coordinate system, and using quaternion interpolation to solve the multiple solution problem in RPY interpolation. Meanwhile, the interpolated position information is transformed into the angular displacement information of the joint coordinate system, and the joint space trajectory planning is achieved using the genetic algorithms integrated velocity, acceleration, jerk and torque and other important kinematic and dynamic constraints. In robot safety and stability, the method is better than the general approach, and it has both the ideal trajectory parameters of the global search ability and performance planning.
Study on Control Technology of Active Suspension Based on ADAMS and MATLAB
Authors: Zhang Yi , Sun Li Li
Published: August 2014

In order to improve the control effect of vehicle suspension, the simplified Seven-DOF active suspension model was created in ADAMS/View by applying the dynamics theory, and classical PID control principle was utilized to design an active suspension controller for vehicle. The vehicle model was imported into the PID controller established in MATLAB as a module to create a vehicle active suspension control model. According to the simulation results, compared with passive suspension, the PID control of active suspension can control effectively the vertical vibration acceleration (VVA),roll and pitch acceleration (RAA&PAA) of body ,which improved vehicle ride comfort performance.
An Intelligent Traffic Signal Control System Based on ARM Cortex-M3
Authors: Cheng Shan Ying , Zhou Xue Mei , Jiang Qin
Published: August 2014

In order to alleviate traffic jam, an intelligent traffic signal control system base on ARM Cortex-M3 is implemented. In the system, STM32F207 is processor. Embedded RTOS CoOS is transplanted to achieve multi-task control of traffic signal in software design. A new multi-population genetic algorithm is developed to optimize green ratio. The result analysis shows that the system has stable performance and it makes the optimization of green ratio convenient and swift.
Optimized Simulation of Automatic Gate System of Beijing Tianjin Intercity Line on Beijing South Railway Station
Authors: Chen Shi Gui , Zhang Xi
Published: August 2014

Railway stations automatic gate system is an important part of railway passenger transport management system. The scientific and reasonable configuration of railway station ticketing equipment and reasonable choice seized outlets is significant on effective passenger organization, give full play to the ability of the equipment, and improve the operation and management level and service quality. Based on the field investigation, the actual utilization of automatic gate system of Beijing Tianjin intercity line on Beijing South Railway Station is calculated and analyzed. Finally, based on the analysis results and the calculated data, simulation is conducted for automatic gate system of Beijing Tianjin intercity line on Beijing South Railway Station using WITNESS and then propose optimized scheme.
A Biological Inspired Neural Network Approach to Robot Path Planning in Unknown Environment
Authors: Zhu Bo , Wang Zhong Min , Liu Zhao Lin
Published: August 2014

Aiming to solve the problem of mobile robot path planning, environmental models are established by using grid method at first, each grid is treated as a neuron, and then the whole space is changed into a topology-form one with all neutral net. Secondly, biological inspired neural networks (BINN) method towards neutral net is adopted to complete path planning of mobile robot. Furthermore, non-optimal solutions potentially produced in neutral net are modified in BINN. Simulation experiments show the feasibility and effectiveness of BINN method.
The Design of Wheel-Propeller Amphibious Robot and the Research of its Control System
Authors: Wu Zi Yue , Qi Jie , Gao Kang
Published: August 2014

This paper proposes a novel wheel-propeller amphibious robot which has unique drive devices, and its operating environments are complex. The robot can realize both crawling locomotion on the ground and swimming locomotion in the water without changing its driving devices. To fulfill a high requirements of control, a control system consist of shore-based control PC, amphibious robot carrier and wireless transmission system is introduced. The control command is generated by the shore-based control PC, and the command transmitted to DSP minimum in carrier through wireless transmission system. Lastly, a distributed control system based on CAN is realized. The whole control system has a strong ability of adapting to different environments and with a high flexibility. The control system can applied on wheel-propeller amphibious robot to realize stable control.
The Determination and Analysis of the Variable Filtration Ratio Model for Hydraulic System Filter
Authors: Ma Guang Ying , Gao Jun , Hu Yun Long
Published: August 2014

According to statistical analysis of the actual situation and the existing data, the expression of the variable filtration ratio of the filter is given. Based on contamination control balancing equations of the hydraulic system, the variation curves of contamination level changing with time are obtained by Matlab/simulink. Through analysis of the example, the final expression of the variable filtration ratio of the filter is determined by fitting simulation results to the experimental data repeatedly, and the reliability of the expression is verified by compared with traditional fixed filtration ratio. For determining the true filtering performance of the filter and selecting the correct filter, this article has good theoretical guidance.
Multiple Objects Tracking Based on Linear Fitting
Authors: Li Dong Mei , Li Tao , Xiang Tao , Xu Wei
Published: August 2014

For multiple objects tracking in complex scenes, a new tracking algorithm based on linear fitting for multiple moving objects is proposed. DG_CENTRIST feature and color feature are combined to describe the object, and the overlapping ratio of the tracking object is calculated. The object in the current frame is measured by using coincidence degree. If there is occlusion, we predict the path of each object by linear fitting and adjust the results of tracking in order to get correct results. The experiment results show that this method can effectively improve the accuracy of the multiple target tracking.
Relative Position Algorithm for Optimal Camera Placement of Large Scale Volume Localization System
Authors: Tian Hui Fang , Yan Huan , Wu Ying Feng
Published: August 2014

Large Scale Volume Localization System (LSVLS) with camera network has appropriate precise and cost, which is a promising system in metrology and localization in industry and lives. Optimal camera placement is significant to lower cost and facilitate target’s auto-control for mobile robot in the large workspace. The author proposed a relative position algorithm (RPA) to find optimal camera placement of dozens even hundreds cameras. RPA calculated the minimum cameras and the coordinate and posture of each camera, after figured out the best posture of the camera in camera placement area. The result of optimal camera placement can enhance greatly the efficiency of camera placement in LSVLS and is verified with a model of a mobile robot works in a laboratory.
Design of Central Air Conditioning Control System
Authors: Wei Li Ming , Li Chen
Published: August 2014

In this paper, hardware and software of the central air-conditioning control system is researched by STC series of enhanced 8051 microcontroller. The STC11F 08XE is the main control of the hardware part. Temperature and humidity sensor regulating valve and all kinds of motor are used as external equipment to complete the temperature and humidity of building the internal control of central air conditioner. In terms of software, the program is described by protel99SE software. Microcontroller program is compiled by Microcontroller development tools keil u and STC-ISP. The temperature and humidity control and optimization of central air conditioning are completed by PID parameters. Infrared control unit is operated and liquid crystal is displayed to show the operation results.
Kinematic Research of the Multi-Motion Pattern Bionic Mechanism
Authors: Song Meng Jun , Ding Cheng Jun , Wang Xu Long , Zhou Hai Song , Zhou Yi , Zhang Ming Lu
Published: August 2014

In this paper, a new multi-motion pattern bionic robot was proposed by us. Though we analyzed the robot as a hybrid series-parallel mechanism, the robot is a wheeled-legged robot, and a new methods for constructing the kinematic model of the special four-bar mechanism of the robot very quickly and efficiently was introduced. Then, the kinematic model of the parallel mechanism of the multi-motion mode bionic robot was constructed when the robot was in the stance phase.
Robot Vision System Based on Image Model Feature Extraction
Authors: Zhao Yun
Published: August 2014

Algorithm encryption of wavelet image which has excellent localization property in time domain and frequency domain can locate graphic information having different directional characteristics into any precision level in certain extent. It has feature matched with human visual characteristics because of the disappearance of blocking effect and the noise. The article first analyzes the wavelet transformation principle of image model in feature extraction process and the second iteration process. Dynamic image feature extraction model can be established using this method in robot vision system. The result of envelope is more realistic and the effect is obvious. The application of the diversity training to project and contrast, the comparison precision is high and relative error is low.
The Design on Automobile Elevator Sedan Frame
Authors: Lai Hui Fen , Liu Xiu Min
Published: August 2014

The automobile elevator sedan frame is composed of the main sedan and the vice-sedan frame. Main sedan with vice-sedan by respective putting up the uppert beam, the straight beam, the under beam to be composed separately, connection mode by bold fastening primarily. Using Solidwoks software to design the main components of a sedan modeling and the completion of the necessary mechanical calculation.
Development and Design of Intelligent Intrusion Detection System Based on Data Mining
Authors: Chen Hai Yan
Published: August 2014

With the popularization and development of Internet, the network has penetrated into every corner of social life. Network brings people convenient but at the same time it also brings a series of safety problems. Intrusion detection system is an important part of network security system. Computer security problem is increasingly prominent, which puts forward higher requirements on intrusion detection system. In this paper, the application of data mining and intelligent Agent detection in the intrusion detection system is researched.