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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Hong-Rui Wang Wei-Lei Chen Xiu-Ling Liu Bin Dong Laboratory of Electronic and Information Engineering Hebei University Baoding China Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University슠 Qinhuangdao China

Real sense image generation algorithm is an important part of computer graphics, in which realistic terrain generation has become a difficulty and hot spot in recent years. Virtual three-dimensional terrain modeling uses computer graphics technology to implement. In this paper, based on fractal Brownian motion theory, the classical Diamond-Square algorithm was advanced to form virtual three-dimensional terrain modeling. Terrain Splicing and Stitch Border techniques and terrain texture mapping, light mapping technique were used to deal with the terrain light and texture and stitch the border. The algorithm parameters were also analyzed in this paper and the influence effects of the various parameters on the virtual terrain features was got. With the combining use of Visual C++ 2005 and OpenGL, terrain generation and rendering are achieved. This approach has reached the expected results and a realistic three-dimensional graphics effect was obtained.

关键词： Fractals Arrays Diamond-like carbon Computational modeling Surface treatment Splicing Three dimensional displays

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An designing of oxygen saturation detection module based on ZigBee technology

An designing of oxygen saturation detection module based on ...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Hong-Rui Wang Yu-Ming Liu Chao Gao Xiu-Ling Liu Laboratory of Electronic and Information Engineering Hebei University Baoding China Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University슠 Qinhuangdao China

In this paper, the technology of ZigBee based on wireless sensor network was adopted to carry out the real-time oxyhemoglobin saturation monitoring. C8051F340 was used to control UZ2400 as MCU(Micro control Unit). Electricity was consumed less than 2mA when it worked and electricity was consumed less than 1μA when it slept. This system can prolong the life time of battery effectively. And the system avoided tedious A/D conversion which the traditional sensor needs and its measure precision is good.

关键词： Zigbee Wireless sensor networks Monitoring Wireless communication Protocols Optical variables measurement Network topology

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Multi-channel assignment in wireless sensor networks: A game theoretic approach

Multi-channel assignment in wireless sensor networks: A game...

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IEEE INFOCOM 2010

作者： Yu, Qing Chen, Jiming Fan, Yanfei Shen, Xuemin Sun, Youxian State Key Lab. of Industrial Control Technology Zhejiang University Hangzhou 310027 China Department of Electrical and Computer Engineering University of Waterloo Waterloo ON N2L 3G1 Canada

ISBN: (纸本)9781424458363

In this paper, we formulate multi-channel assignment in Wireless Sensor Networks (WSNs) as an optimization problem and show it is NP-hard. We then propose a distributed Game Based Channel Assignment algorithm (GBCA) to solve the problem. GBCA takes into account both the network topology information and transmission routing information. We prove that there exists at least one Nash Equilibrium in the channel assignment game. Furthermore, we analyze the sub-optimality of Nash Equilibrium and the convergence of the Best Response in the game. Simulation results are given to demonstrate that GBCA can reduce interference significantly and achieve satisfactory network performance in terms of delivery ratio, throughput, channel access delay and energy consumption. ©2010 IEEE.

关键词： Wireless sensor networks

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Experiments on autonomous mobile sensor control for target tracking

Experiments on autonomous mobile sensor control for target t...

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2010 IEEE International Symposium on "A World of Wireless, Mobile and Multimedia Networks", WoWMoM 2010

作者： Li, Hongbin Zhang, Fan Chen, Jiming Sun, Youxian State Key Lab. of Industrial Control Technology Zhejiang University Hangzhou 310027 China Department of Electrical and Computer Engineering University of Waterloo Waterloo ON N2L 3G1 Canada

ISBN: (纸本)9781424472659

Technology advancements in robotics and communication make it possible to combine mobility and static wireless sensor networks. Being able to locomote enables sensors to (1) adjust their positions for better sensing quality, (2) ensure field coverage by spreading out and (3) fill up communication gap to guarantee information sharing in wireless environment. Concerning the above three criteria, we propose a autonomous management scheme for mobile sensors, aims to achieve distributed sensor position control. Accordingly, we developed a testbed for mobile sensor network verification, with good interfaces to obtain ranging measurements and control sensor motion. Implementation details of building static and mobile sensors are given. Finally we present experiment results to verify the proposed sensor control scheme. ©2010 IEEE.

关键词： Target tracking

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Collision avoidance for a mobile robot based on radial basis function hybrid force control technique

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Chinese Physics B 2009年第10期18卷 4222-4228页

作者：温淑焕 Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University

Collision avoidance is always difficult in the planning path for a mobile robot. In this paper, the virtual force field between a mobile robot and an obstacle is formed and regulated to maintain a desired distance by hybrid force control algorithm. Since uncertainties from robot dynamics and obstacle degrade the performance of a collision avoidance task, intelligent control is used to compensate for the uncertainties. A radial basis function （RBF） neural network is used to regulate the force field of an accurate distance between a robot and an obstacle in this paper and then simulation studies are conducted to confirm that the proposed algorithm is effective.

关键词： mobile robot collision avoidance hybrid force/position control path planning RBF neural network

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The inverse kinematics analysis of the novel 6-DOF parallel mechanism

The inverse kinematics analysis of the novel 6-DOF parallel ...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Hong-Rui Wang Qing-Quan Wang Malikov Alexander Xiu-Ling Liu Bin Dong Laboratory of Electronic and Information Engineering Hebei University Baoding China Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University슠 Qinhuangdao China Kazan State Technical University Kazan Russia

In this paper, we present the inverse kinematical of a novel 6-DOF orthogonal parallel mechanism. The displacements Δl i (i = 1,..., 6) of steering gears were deduced from the position and orientation of the moving platform. The desired trajectory was assumed to be more complex nonlinear curves, simulations are performed for the real time trajectory tracking of the mechanism. By using Matlab software, the analysis and simulation of mechanism can be carried out conveniently, and the efficiency of the design can be upgraded. The simulation curves of each displacement were provided and analyzed though simulative research. The results will be used for synthesis of the control law in the form of error feedback, and measurements results of actual movements by means of sensors. The analysis can help to realize the trajectory tracking control fast and accurately.

关键词： Kinematics Trajectory Gears Fasteners Equations Simulation Machine learning

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Optimization schedule for preventing slippage on tandem cold rolling mills based on IAGA

Beijing Keji Daxue Xuebao/Journal of University of Science a...

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Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing 2010年第10期32卷 1360-1365页

作者： Che, Hai-Jun Han, Xin-Yan Yang, Jing-Ming Yang, Zhi-Fen Hebei Key Lab. of Industrial Computer Control Engineering Yanshan University Qinhuangdao 066004 China

To tackle the problem of slippage during the cold rolling process of a tandem mill, a schedule optimization model for preventing slippage was established based on slip factor. Aiming to the shortages of the standard genetic algorithm, such as premature convergence, oscillation and over-randomization, an improved adaptive genetic algorithm was applied to optimize the system. In the algorithm a population-sorted multi-roulette-wheel selection operator was put forward for reducing the selected error generated by roulette-wheel randomization and promoting the probability of selecting better individuals. Simultaneously the algorithm decides the crossover rate and mutation rate of chromosome based on the individual adaptive value in the calculation process, makes the start phase variable obviously and the later phase stable slowly, and ensures population development, seeking balance and entire convergence. Experimental results and actual application show that the schedule optimization model can reduce the slip probability prominently, improve the product quality, and achieve a better economic benefit.

关键词： Cold rolling

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Analysis of a series augmented railgun launching process

Analysis of a series augmented railgun launching process

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International Conference on Electrical Machines, ICEM

作者： Zhenchun Wang Huiguang Li Yintang Wen Zaiji Zhan Xiaoting Peng Wenkui Wang Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University슠 QinHuangdao China School of Science and Technology Yanshan University슠 QinHuangdao China

ISBN: (纸本)9781424441747

For characterizing the series augmented railgun launching process, the study from analysis of muzzle voltage was insufficient since armature velocity, resistance and voltage drop of armature were also important to the launching process. In the present work, the variations of armature velocity, total resistance and voltage drop of armature against time were investigated based on the data of B-dot probes (to measure position of armature), Rogowsky coil (to monitor current) and high voltage probes (to observe muzzle voltage). Results indicated that, the voltage drop of armature and total resistance showed roughly the same trend as the change of velocity. There were obvious stages observed in two-turn series augmented railgun launching process.

关键词： Railguns Resistance Rails Inductance Voltage measurement Armature Force

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label-based DV-Hop localization againstwormhole attacks in wireless sensor networks

Label-based DV-Hop localization againstwormhole attacks in w...

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作者： Wu, Junfeng Chen, Honglong Lou, Wei Wang, Zhibo Wang, Zhi State Key Lab. of Industrial Control Technology Zhejiang University China Dept. of Computing Hong Kong Polytechnic University Hong Kong Hong Kong Dept. of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong Hong Kong

ISBN: (纸本)9780769541341

Node localization becomes an important issue in the wireless sensor network as its broad applications in environment monitoring, emergency rescue and battlefield surveillance, etc. Basically, the DV-Hop localization mechanism can work well with the assistance of beacon nodes that have the capability of self-positioning. However, if the network is invaded by a wormhole attack, the attacker can tunnel the packets via the wormhole link to cause severe impacts on the DV-Hop localization process. The distance-vector propagation phase during the DVHop localization even aggravates the positioning result, compared to the localization schemes without wormhole attacks. In this paper, we analyze the impacts of wormhole attack on DV-Hop localization scheme. Based on the basic DV-Hop localization process, we propose a label-based secure localization scheme to defend against the wormhole attack. Simulation results demonstrate that our proposed secure localization scheme is capable of detecting the wormhole attack and resisting its adverse impacts with a high probability. © 2010 IEEE.

关键词： Sensor nodes

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Fast Covariance Matching Based on Genetic Algorithm

Fast Covariance Matching Based on Genetic Algorithm

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International Conference on Wireless Communications, Networking and Mobile Computing (WiCom)

作者： Xuguang Zhang Shuo Hu Limin Zhang Yuanhao Wu Key Laboratory of Industrial Computer Control Engineering of Hebei Province Institute of Electrical Engineering Yanshan University슠 Qinhuangdao China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy and Sciences Changchun China

This paper proposes an effective framework to boost the efficiency of covariance matching. In this framework, covariance matrices are used to match object in complex environment by fusing multiple features. Then, Genetic Algorithm (GA) is employed to improve the processing speed of covariance matching. To take advantage of the property of GA for the optimization in large search spaces to covariance matching, a fitness function is designed using the distances between the covariance matrices of model and candidate regions. Experimental results show that the proposed approach can improve the processing speed of covariance matching observably. The computing speed of the proposed method is at least 7 times than that of exhaustive searching.

关键词： Covariance matrix Gallium Feature extraction Pixel Robustness Genetic algorithms Computational modeling

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