检索结果-内蒙古大学图书馆

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

来源：评论

学校读者我要写书评

暂无评论

An designing of oxygen saturation detection module based on ZigBee technology

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Max-Min Fair Multipath Routing with Physical Interference Constraints for Multihop Wireless Networks

Max-Min Fair Multipath Routing with Physical Interference Co...

引用

IEEE International Conference on Communications (ICC)

作者： P. Thulasiraman J. Chen X. Shen Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada State Key Laboratory of Industrial Control Technology University of Zhejiang Hangzhou China

Fairness and system throughput, influenced by wireless interference, are major objectives of resource allocation in wireless networks. Whereas traditionally max-min fairness protocols have been developed for wired networks (where interference is not a factor for network performance), in this paper we investigate the problem of flow routing and fair bandwidth allocation under the constraints of the physical interference model for multihop wireless networks. A max-min fair (MMF) routing algorithm under physical interference constraints is proposed where multiple candidate paths coexist for each user to the base station. The algorithm is formulated as a multicommodity flow problem where the lexicographically largest bandwidth allocation vector is found among all optimal allocation vectors. We compare our approach with two MMF interference routing algorithms in the literature that use the protocol interference model to garner fair bandwidth allocation. We show that our algorithm performs better in terms of blocking probability, bandwidth usage and link load.

关键词： Interference constraints Spread spectrum communication Wireless networks Channel allocation Routing protocols Throughput Resource management Wireless application protocol Base stations Bandwidth

来源：评论

学校读者我要写书评

暂无评论

Experiments on autonomous mobile sensor control for target tracking

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

引用

IEEE International Symposium on World of Wireless Mobile and Multimedia Networks (WoWMoM)

作者： Hongbin Li Fan Zhang Jiming Chen Youxian Sun State Key Laboratory of Industrial Control Technology University of Zhejiang Hangzhou China Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

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.

关键词： Robot sensing systems Mobile communication Wireless sensor networks Target tracking Mobile computing

来源：评论

学校读者我要写书评

暂无评论

Regret Matching Based Channel Assignment for Wireless Sensor Networks

Regret Matching Based Channel Assignment for Wireless Sensor...

引用

IEEE International Conference on Communications

作者： Qing Yu Jiming Chen Youxian Sun Yanfei Fan Xuemin (Sherman) Shen State Key Laboratory of Industrial Control Technology University of Zhejiang Hangzhou China Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

Multiple channels in Wireless Sensor Networks (WSNs) are often exploited to support parallel transmission and reduce interference. However, there are many challenges, such as extra communication overhead, posed to the energy constraint of WSNs by the multi-channel usage coordination. In this paper, we propose a Regret Matching based Channel Assignment algorithm (RMCA) to address those challenges. The advantage of RMCA is that it is highly distributed and requires very limited information exchanges among sensor nodes. It converges almost surely to the set of correlated equilibrium. Moreover, RMCA can adapt the channel assignment among sensor nodes to the time-variant flows and network topology. Simulations show that RMCA achieves good network performance in terms of both delivery ratio and packet latency.

关键词： Wireless sensor networks Peer to peer computing Network topology Interference constraints Delay Media Access Protocol Communications Society Sun industrial control Paper technology

来源：评论

学校读者我要写书评

暂无评论

Distributed interfering sensor scheduling scheme for target tracking

Distributed interfering sensor scheduling scheme for target ...

引用

International Conference on Communications and Networking in China (CHINACOM)

作者： Fan Zhang Jiming Chen Hongbin Li Youxian Sun Xuemin Shen State Key Laboratory of Industrial Control Technology University of Zhejiang Hangzhou China Department of Electrical and Computer Engineering University of Waterloo Waterloo ONT Canada

For target tracking applications, active ultrasonic sensors may suffer from inter-sensor-interference when these highly dense deployed sensors are not scheduled. In this paper, we propose a dynamic distributed sensor scheduling (DSS) scheme, where the tasking sensor is elected spontaneously from the sensors with pending sensing tasks in a distributed way via random competition by using Carrier Sense Multiple Access (CSMA)-like fashion, and releases the channel immediately when ranging task is done. Both simulation results and testbed experiment demonstrate the efficiency of DSS scheme in terms of system scalability and tracking performance.

关键词： Decision support systems Target tracking Acoustics Sensors Delay Distance measurement Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

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

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Modeling forest fire spread process based on percolation theory

引用

Journal of Information and Computational Science 2010年第9期7卷 1930-1937页

作者： Li, Guanghui Xia, Qibiao Li, Hong Feng, Dongqin School of Information Engineering Zhejiang A and F University Hangzhou 311300 China State Key Lab. of Industrial Control Technology Zhejiang University Hangzhou 310027 China

A forest fire spread model and its simulation algorithm based on 2D percolation lattice are presented in this paper, which can be used to simulate the forest fire spread process. The theoretical analysis and simulation experimental results show that, when the site concentration p is 0.6, the forest will approximately reach its percolation threshold. The presented model can describe the forest fire spread dynamics, and can improve the strategies for fire control and forest resource management. Moreover, the presented simulation algorithm has lower complexity than that in literature. © 2010 Binary Information Press.

关键词： Solvents

来源：评论

学校读者我要写书评

暂无评论

Analysis of a series augmented railgun launching process

Analysis of a series augmented railgun launching process

引用

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

来源：评论

学校读者我要写书评

暂无评论

Internal model control for hysteretic nonlinear systems based on support vector regression

Internal model control for hysteretic nonlinear systems base...

引用

World Congress on Intelligent control and Automation (WCICA)

作者： Wenguang Zhang Jianqin Mao Yanhua Ma Beijing Key Laboratory of Measurement and Control Technology and System for Industrial Process Control & Computer Engineering School North China Electric Power University Beijing China School of Automation Science and Electrical Engineering Beijing Aeronautics and Astronautics University Beijing China

Aim at the hysteretic nonlinearity characteristic of the giant magnetostrictive actuator in control, an internal model control method based on support vector regression is presented in this paper. Its models are built by support vector regression using the input and output data of the actuator and the internal model control is achieved. The simulation results show the method in this paper has better control precision.

关键词： Support vector machines Actuators Automation Data models Computational modeling Hysteresis Magnetostriction

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：