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2010 Third International Conference on Intelligent Networks and Intelligent Systems最新文献

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Research on Finite Element Model of Moving Deformable Barrier in Side Impact 移动变形障壁侧面碰撞有限元模型研究
Wu Xiu-chun, Wang Bo, Tian Guohong
The Occupant Protection of Vehicle Side Impact (GB20071-2006) is a compulsive and executable standard that all M1 and N1 style vehicle must obey to. Simulation for vehicle side impact is one of important test methods to study vehicle impact safety. And the model of moving deformable barrier (MDB) is the basic tool of the test. According to the requirements in regulation for the performance and test verification method of MDB, the finite element model of MDB is built and the simulation test is carried out to verify the correctness of the model. And the simulation results show the model is accurate and effective.
《车辆侧面碰撞乘员防护》(GB20071-2006)是所有M1、N1型车辆必须遵守的强制性执行标准。汽车侧面碰撞仿真是研究汽车碰撞安全性的重要试验手段之一。运动变形障壁(MDB)模型是测试的基本工具。根据法规对MDB性能和试验验证方法的要求,建立了MDB有限元模型,并进行了仿真试验,验证了模型的正确性。仿真结果表明该模型是准确有效的。
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引用次数: 0
A Method of Determining the Order of Residual Function Model on AOS Data Link Protocol AOS数据链路协议残差函数模型阶数的确定方法
Yuntao Zhao, Ye Tian, Yongxin Feng, Qingli Liu
AOS is the important protocol framework and widely used in space protocol, especially high-speed transmission. In the data link layer, the residual function model can well solve the multiplexing efficiency. But how to determine the order of residual function becomes a new problem. In this paper a method was proposed to solve that problem in term of the precision by j order residual Poisson Model of Efficiency. Also the simulation and comparison was achieved.
AOS是重要的协议框架,广泛应用于空间协议,特别是高速传输。在数据链路层,残差函数模型可以很好地解决复用效率问题。但如何确定残差函数的阶数成为一个新问题。本文提出了一种利用效率的j阶残差泊松模型从精度上解决这一问题的方法。并进行了仿真和比较。
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引用次数: 0
The Vitality Evaluation Method for Wireless Sensor Network 无线传感器网络活力评估方法
B. Li, W. Qu, J. Li
Wireless Sensor Network (WSN) is a network whose energy is constrained. To efficiently use energy and enhance network viability is one of the main objectives for designing WSN. Some new concepts about the vitality of WSN are proposed, and a vitality evaluation method for WSN is studied in this paper. The analysis showed that the vitality evaluation method proposed is effective and useful.
无线传感器网络是一种能量受限的网络。有效地利用能量和提高网络的生存能力是无线传感器网络设计的主要目标之一。提出了无线传感器网络活力的一些新概念,研究了无线传感器网络活力评价方法。分析表明,所提出的活力评价方法是有效的、有用的。
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引用次数: 0
A Network Spider Based on Theme 基于主题的网络蜘蛛
Yang Yong, Wenliang Zheng
Based on the research in the search strategy in search engine and the theme relativity judging algorithms, this article presents a structure design model of the theme-oriented web spider and then analyzes it in detail.
本文在研究搜索引擎搜索策略和主题相关性判断算法的基础上,提出了面向主题的网络蜘蛛的结构设计模型,并对其进行了详细的分析。
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引用次数: 0
Research on the Policy-Based Satellite Network Management 基于策略的卫星网络管理研究
Xiaobo Tan, Wenbo Zhang
In order to accomplish the self-management of the satellite network, policy is introduced into the network management and a new policy-based hierarchical distributed architecture is established in which two new policy layers called domain policy server and local policy server are added between policy enforcement point and global policy server to share the management tasks for the center management station. Furthermore, this paper defines the policy structure with XML schema and describes policy with XML. The simulation results show that the new architecture improves the efficiency of the network management.
为了实现卫星网络的自我管理,在网络管理中引入策略,建立了一种新的基于策略的分层分布式体系结构,在策略实施点和全局策略服务器之间增加域策略服务器和本地策略服务器两个策略层,共同分担中心管理站的管理任务。在此基础上,用XML模式定义了策略结构,并对策略进行了描述。仿真结果表明,新架构提高了网络管理的效率。
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引用次数: 0
Numerical Simulation and Optimal Control in the Continuous Casting of Billets 小方坯连铸过程的数值模拟与优化控制
Zhenping Ji, Y. Jiang, Jian Yang
A two-dimensional heat-transfer model for transient simulation and control of a continuous steel billet caster was developed. Billet temperature and solidification were computed by the model as a function of casting speed, secondary spray cooling water flow rates and temperature, shell thickness, steel chemistry, and pouring and ambient temperatures. Typically, the solidification path, temperature-solid fraction relationship, was prescribed. Results of several simulations are given to demonstrate the effects of changing casting conditions on the billet thermal profile, end of liquid pool, and solidification end point. A control methodology and algorithm suitable for control of a continuous casting machine is described, and the ability to control the surface temperature profile by dynamically adjusting secondary spray cooling flow rates is demonstrated by simulation. Results from a preliminary version of the model show that is capable of using in realistic caster.
建立了用于钢坯连铸机瞬态模拟与控制的二维传热模型。利用该模型计算了铸坯温度和凝固过程,并将其作为浇注速度、二次喷雾冷却水流量和温度、钢壳厚度、钢的化学性质、浇注温度和环境温度的函数。典型的凝固路径是温度-固相分数关系。模拟结果表明,浇注条件的改变对铸坯热分布、液池末端和凝固终点的影响。描述了一种适用于连铸机的控制方法和算法,并通过仿真验证了通过动态调节二次喷雾冷却流量来控制表面温度分布的能力。初步模型的结果表明,该模型能够在现实中使用。
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引用次数: 1
A Watermarking Scheme Using Polyline and Polygon Characteristic of Shapefile 一种利用Shapefile的折线和多边形特征的水印方案
Xiao-Jiao Huo, T. Seung, B. Jang, Suk-Hwan Lee, Ki-Ryong Kwon
This paper presented the watermarking scheme for copyright of GIS vector map based on ESRI shape file. The watermarking scheme mainly uses polyline length or polygon perimeter distribution. We embed a watermark bit to the local mean length/perimeter of a suitable group of polyline/polygon data by changing all coordinates of vertices according to the constraint of the robustness and the invisibility. Experimental results verified that the proposed scheme has the robustness against various geometric attacks.
提出了一种基于ESRI形状文件的GIS矢量图版权水印方案。水印方案主要采用折线长度或多边形周长分布。我们根据鲁棒性和不可见性的约束,通过改变所有顶点的坐标,将水印位嵌入到一组合适的折线/多边形数据的局部平均长度/周长。实验结果验证了该方案对各种几何攻击具有较强的鲁棒性。
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引用次数: 10
Multi-carrier PWM Control Method of a Novel Asymmetrical Multilevel Inverter 一种新型非对称多电平逆变器的多载波PWM控制方法
Xing-tao Sun, Zhang Yun
This paper presents a new asymmetrical multilevel inverter topology. The new topology can improve the number of output voltage levels greatly and simply topology structure using a bidirectional auxiliary switch. A hybrid PWM method is proposed for the new topology that switches in different cells works in different switching frequency to low switching losses. Lastly, an experimental 11-level voltage-source inverter system is built to verify the topology and PWM control method. It is demonstrated that the experimental results agree well with simulations.
提出了一种新的非对称多电平逆变器拓扑结构。该拓扑结构采用双向辅助开关,大大提高了输出电压电平的数量,简化了拓扑结构。针对新的拓扑结构,提出了一种混合PWM方法,使不同单元的开关工作在不同的开关频率,以降低开关损耗。最后,搭建了一个11电平电压源逆变器实验系统,验证了拓扑结构和PWM控制方法。实验结果与仿真结果吻合较好。
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引用次数: 4
MBD Driven Digital Product Collaborative Definition Technology MBD驱动的数字产品协同定义技术
Q. Zhou, Q.-C. Fan
Recording and exchanging the collaborative product definition information is an important aspect of digital product collaborative development process. To resolve the problem of records the product collaborative definition information, promote the implementation and application of product collaborative development technology, MBD (Model Based Definition) driven product collaborative development technology was proposed. The essence of MBD which uses an integrated three-dimensional solid model to express the product definition information fully was analyzed. At the same time, the types of product collaborative definition information were summarized, and the three methods such as attribute expression, annotation expression, attribute add annotation co-expression were proposed to express the nongeometricproduct manufacturing information. In addition, the process of exchanging and recording product collaborative definition information with MBD technology was described.
协同产品定义信息的记录和交换是数字产品协同开发过程中的一个重要方面。为解决产品协同定义信息的记录问题,促进产品协同开发技术的实施和应用,提出了基于模型定义(Model Based definition, MBD)的产品协同开发技术。分析了MBD的本质,即用一个完整的三维实体模型来充分表达产品定义信息。同时,总结了产品协同定义信息的类型,提出了属性表达、标注表达、属性加标注协同表达三种表达非几何产品制造信息的方法。此外,还描述了利用MBD技术交换和记录产品协同定义信息的过程。
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引用次数: 3
A Traffic Prediction Based Bandwidth Management Algorithm of a Future Internet Architecture 基于流量预测的未来互联网架构带宽管理算法
Yongtao Wei, Jinkuan Wang, Cuirong Wang
In a internet architecture called CABO, multiple routing architectures can run on a shared physical infrastructure, which is carried out with network virtualization. This paper presents the design and evaluation of a bandwidth allocation algorithm based on multi-commodity flow problem solver integrated with a traffic predictor: linear predictor with dynamic error compensation (L-PREDEC). The basic idea of our design is that some failure in the MFP computation implies that one or more links do not have enough available capacity, which violates the linear constraints on the commodities for each link when modeling MFP. To avoid producing bottleneck links, we employed traffic predictor. On one hand, MFP solver makes better resource utilization by making use of the thin pieces of available bandwidth, by which the virtual network can accept more service requests. On the other hand, the traffic predictor adjusts the link with the largest occupation (bottleneck link) by periodically monitoring the traffic rate of a user link and adjusting the reserved bandwidth based on the prediction made from the traffic history. Then we present the results of performance comparisons of the predictor-integrated algorithm and the allocation algorithm only by Solving MFP. The comparisons are based on the mean packet delay, the variance of the packet delay, and the buffer requirements. Our performance tests show that predictor-integrated algorithm works better than the allocation algorithm only by Solving MFP in terms of the three metrics listed above.
在名为CABO的互联网架构中,多个路由架构可以在共享的物理基础设施上运行,这是通过网络虚拟化实现的。本文提出了一种基于多商品流问题求解器和流量预测器:动态误差补偿线性预测器(L-PREDEC)的带宽分配算法的设计和评价。我们设计的基本思想是,MFP计算中的一些失败意味着一个或多个链路没有足够的可用容量,这违反了建模MFP时对每个链路的商品的线性约束。为了避免产生瓶颈链接,我们使用了流量预测器。一方面,MFP求解器通过利用稀疏的可用带宽,使虚拟网络能够接受更多的业务请求,从而更好地利用资源。另一方面,流量预测器通过定期监控用户链路的流量速率,并根据流量历史预测调整预留带宽,从而调整占用最大的链路(瓶颈链路)。然后通过求解MFP给出了预测集算法和分配算法的性能比较结果。比较是基于平均数据包延迟、数据包延迟的方差和缓冲区需求。我们的性能测试表明,仅通过在上面列出的三个指标方面求解MFP,预测器集成算法比分配算法工作得更好。
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引用次数: 17
期刊
2010 Third International Conference on Intelligent Networks and Intelligent Systems
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