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2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering最新文献

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The reliability simulation research of performance parameters in the boiler combustion control system 锅炉燃烧控制系统性能参数可靠性仿真研究
Zheng Huang, T. Shi
In the control system of the naval ships steam power plant, the performance and reliability of control system in the power plant become the important influence factor on the full play level of battle technical performance. Combustion process of boiler is a complex physical process, so whether the boiler combustion control system can work reliably will directly affect the reliability of power plant. Towards failure characteristics and performance of the boiler combustion control system, this paper give the analysis of the performance parameters reliability index in the control system, then also give the establishment and simulation of control system performance reliability analysis model based on components degradation that providing for comprehensive evaluation of performance parameters reliability in the control system.
在舰艇蒸汽动力装置控制系统中,动力装置控制系统的性能和可靠性成为影响作战技术性能充分发挥水平的重要因素。锅炉燃烧过程是一个复杂的物理过程,因此锅炉燃烧控制系统能否可靠工作将直接影响电厂的可靠性。针对锅炉燃烧控制系统的失效特点和性能,对控制系统的性能参数可靠性指标进行了分析,建立了基于部件退化的控制系统性能可靠性分析模型并进行了仿真,为控制系统性能参数可靠性的综合评价提供了依据。
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引用次数: 3
Linear singular blending rational spline curve 线性奇异混合有理样条曲线
Chengwei Wang
By introducing the concept of weights in NURBS curve into a blending technique, the paper extends the representation of the rational spline curve. Shape-control capability of the extension curve is shown to be much better than that of the rational spline curve. The representation and properties of the extension curve are studied. The curve is easy and intuitive to reshape by varying the tension parameters; so it is useful in some applications of CAD/CAM.
通过将NURBS曲线中的权值概念引入到一种混合技术中,扩展了有理样条曲线的表示。结果表明,该扩展曲线的形状控制能力明显优于有理样条曲线。研究了扩展曲线的表示和性质。通过改变张力参数,曲线的重塑简单直观;在CAD/CAM的一些应用中具有一定的实用价值。
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引用次数: 2
Design and analysis of intelligent greenhouse environment control system based on multi-sensor information fusion 基于多传感器信息融合的智能温室环境控制系统设计与分析
Bao Ji, W. Lei, Shao Ji, Cai Hong Zou
On the basis of analyzing complexity greenhouse environment information and variety of modem sensor, considering the characteristics of greenhouse environment control multi-sensor information fusion technique is used in the greenhouse control system, and the Control strategy is the priority regulation and the combination of fuzzy control technique. The greenhouse environment control system hardware is designed upon the core architecture of single chip processor AT89S52 and LAN universal interface chip RTL8019AS. Simultaneously, the structural functions, hardware configuration, and software design of the whole system are described. Analysis shows that the intelligent controller can adjust temperature and humidity accurately can meet intelligent greenhouse control requirements of various scales.
在分析温室环境信息复杂性和现代传感器种类繁多的基础上,考虑到温室环境控制的特点,在温室控制系统中采用多传感器信息融合技术,控制策略为优先调节与模糊控制技术相结合。以单片机AT89S52和局域网通用接口芯片RTL8019AS为核心架构,设计了温室环境控制系统硬件。同时介绍了整个系统的结构功能、硬件配置和软件设计。分析表明,该智能控制器能够准确调节温湿度,能够满足各种尺度的智能温室控制要求。
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引用次数: 2
Models of time coordination for shipborne weapons common-frame launch 舰载武器共架发射时间协调模型
L. Fang, Qiu Zhiming, Mao Yiqing, Wang Shuman
Common-frame launched weapons must be coordinated in airspace and time for ensuring safety of ship and weapons. This paper researches with emphasis on the problem of time coordination. Firstly, the process of common-frame launch is analyzed and a common model of launch sequence of weapons is advanced. Secondly, factors considered for time coordination are studied including launch rate, influence on adjacent cells, influence of initial trajectory intersection and launch priority. Lastly, model of launch time spacing and model of launch priority are advanced, which make up of models of time coordination. The results show that models of time coordination answer the question that when is appropriate to launch missile or deliver authorization for the issuance of ignition commands to missile for avoiding the time collision between missiles launched simultaneously.
为了保证船舶和武器的安全,必须在空域和时间上进行协调。本文重点研究了时间协调问题。首先,分析了武器共架发射过程,提出了武器共架发射序列的通用模型。其次,研究了时间协调考虑的因素,包括发射速率、对相邻单元的影响、初始轨迹相交的影响和发射优先级;最后,提出了发射时间间隔模型和发射优先级模型,构成了时间协调模型。结果表明,时间协调模型解决了导弹何时发射或何时授权发射点火命令的问题,避免了同时发射的导弹之间的时间冲突。
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引用次数: 1
IR4CF: A intrusion replay system for computer forensics IR4CF:用于计算机取证的入侵重播系统
Lei Xu, Zhihong Tian, Jianwei Ye, Hongli Zhang
When computer intrusions occur, one of the most costly, time-consuming, and human-intensive tasks is to analysis and take the evidence of the compromised system. IR4CF: a system call based intrusion replay system for supporting the computer forensics. IR4CF uses three key mechanisms to improve the accuracy and reduce the human overhead of performing forensic analysis. First, it streams the kernel event information in real-time, to append-only storage on a separate, hardened, logging machine, making the system resilient to a wide variety of attacks. Second, it uses system-call hijacking technology to perform comprehensive monitoring of the execution of a target system at the kernel event level, giving a high-resolution, application-independent view of all activity. Third, it analyses and replays the intrusion actions dynamically, which can be used for evidence in a court of law.
当发生计算机入侵时,最昂贵、最耗时、最需要人力的任务之一就是分析和获取被入侵系统的证据。IR4CF:基于系统调用的入侵重播系统,支持计算机取证。IR4CF使用三个关键机制来提高准确性并减少执行法医分析的人力开销。首先,它实时地将内核事件信息流式传输到单独的、经过加固的日志机上,仅用于附加存储,使系统能够抵御各种各样的攻击。其次,它使用系统调用劫持技术在内核事件级别对目标系统的执行执行进行全面监视,从而提供所有活动的高分辨率、独立于应用程序的视图。第三,对入侵行为进行动态分析和回放,可作为法庭证据。
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引用次数: 2
Safety management assessment on highway tunnel operation and study on preventative decision-making control 公路隧道运营安全管理评价及预防性决策控制研究
Xie Lai-fa, Xiaofeng Liao
Based on the relevance analysis of event characteristics, system engineering, and safety assessment theory & method, this paper puts forward the management method for grading assessment of highway tunnel operation safety from the standpoint of current operation situation of China's highway tunnel, establishes corresponding safety assessment index system; and on this basis, presents the follow up and inspection theatrical method to the safety situation of indexes at various levels, constitutes the preventative safety operation decision-making control framework of tunnel, and provides theatrical basis for the formulation of highway tunnel preventative curing proposal and management countermeasures.
本文在对事件特征、系统工程、安全评价理论与方法进行相关性分析的基础上,从中国公路隧道的运营现状出发,提出了公路隧道运营安全分级评价的管理方法,建立了相应的安全评价指标体系;并在此基础上,提出了对各级指标安全状况的跟踪检查戏剧化方法,构成了隧道预防性安全运行决策控制框架,为制定公路隧道预防性养护方案和管理对策提供戏剧化依据。
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引用次数: 0
A complex simulation method in thermode dynamic reliability studying 热模动态可靠性研究中的复杂仿真方法
Mengquan Tan, Shijian Zhu, Jia-shan Jin
Assignments of the vessels change suddenly sometimes, so the vessels need several of operation plans on the marine steam power plant. Based on the thermodynamic calculation theory, maneuverability analysis model of steam-powered vessel is given with the maximum speed index for different operation plans of steam power plant. The result indicates that the maneuverability model is practical and efficient. And there is significance of using for reference for the settlement of maneuverability analysis of other types of power plants.
船舶的作业任务有时会发生突然变化,因此船舶在船舶蒸汽动力装置上需要多个作业计划。基于热力计算理论,给出了蒸汽动力船舶的机动性分析模型,并给出了不同运行方案下蒸汽动力船舶的最大航速指标。结果表明,所建立的机动性模型是实用、有效的。对其他类型电厂机动性分析的解决具有一定的借鉴意义。
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引用次数: 0
Study on computerized schedule system for city logistics distribution 城市物流配送计算机调度系统的研究
Wan Feng-jiao
Distribution, which is one of important part in the logistics system, has a great influence on the improvement of the whole logistics efficiency and reducing of cost. Nowadays, because the development of domestic logistics distribution is still at initial stage and distribution scheduling system is basically at artificial experience stage, it is unable to meet extensive centralized distribution, uniform scheduling and low-cost requirement. In order to improve distribution efficiency, this paper presents an assumption of developing computerized schedule system for city logistics distribution. According to actual operation characteristic of distribution and computer technology, this paper makes a preliminary design in computerized schedule system. It concludes the design of algorithm structure, running structure and function demand module. Through these design, we can find out the optimum scheme with the computer and then amend the scheme according to practical condition. This saves much time on scheduling. So establish computerized logistics schedule system is more wise and realistic way.
配送作为物流系统的重要组成部分,对整个物流效率的提高和成本的降低有着重要的影响。目前,由于国内物流配送的发展还处于起步阶段,配送调度系统基本处于人工体验阶段,无法满足广泛集中配送、统一调度和低成本的要求。为了提高配送效率,本文提出了开发城市物流配送计算机调度系统的设想。根据配电网的实际运行特点,结合计算机技术,对计算机调度系统进行了初步设计。总结了算法结构、运行结构和功能需求模块的设计。通过这些设计,我们可以用计算机找出最优方案,然后根据实际情况对方案进行修改。这在日程安排上节省了很多时间。因此建立计算机化的物流调度系统是更为明智和现实的途径。
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引用次数: 0
The research of RRC connection establishment and co-simulation of SDL and TTCN SDL与TTCN的RRC连接建立及联合仿真研究
Ce Liu, D. Zhang, Xiaowen Li, Fengming Jiao
This paper introduces and analyzes the LTE RRC sub-layer protocol stack structure and function, designs the state and the state conversion process of the RRC sub-layer. It also designs the realization of the RRC connection establishment process. And we simplify signaling interaction between layers based on the characteristics of the project. Finally, it designs the simulation of SDL flowchart of the RRC connection establishment process. Through the MSC map generated by the Co-Simulation of SDL and TTCN, we can verify the correctness of the designed signaling process.
本文介绍和分析了LTE RRC子层协议栈的结构和功能,设计了RRC子层的状态和状态转换过程。设计实现了RRC连接建立流程。并根据项目的特点简化了层与层之间的信令交互。最后,设计了RRC连接建立过程的SDL仿真流程图。通过SDL和TTCN联合仿真生成的MSC图,验证了所设计的信令过程的正确性。
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引用次数: 2
Comparison of matched filter and dechirp processing used in Linear Frequency Modulation 线性调频中匹配滤波器与解调处理的比较
Jun Wang, Duoduo Cai, Y. Wen
Linear Frequency Modulation (LFM) is an important wideband signal, which is widely used in radar system. Both matched filter and dechirp processing can realize pulse compression of LFM, and then get high resolution target range profile. Matched filter has strong anti-noise ability; it can also achieve accurate pulse compression under seriously noisy environment. Dechirp processing can reduce the sample rate of AD efficiently, but the anti-noise ability is not as good as matched filter. This paper analyzes the algorithms of matched filter and dechirp processing which are used in LFM, then simulates the pulse compression to get high resolution target one-dimension range profile under different signal to noise ratio (SNR). The simulation results indicate that matched filter has strong anti-noise ability, dechirp processing has advantage in sample rate of data processing by hardware. This work can provide the theory basis and guidance to select the best pulse compression method under different scenes.
线性调频(LFM)是一种重要的宽带信号,在雷达系统中有着广泛的应用。匹配滤波和去噪处理都可以实现LFM的脉冲压缩,从而得到高分辨率的目标距离像。匹配滤波器抗噪能力强;在噪声严重的环境下也能实现精确的脉冲压缩。Dechirp处理能有效降低AD的采样率,但抗噪能力不如匹配滤波器。分析了线性调频中使用的匹配滤波和去噪处理算法,并对不同信噪比下的脉冲压缩进行了仿真,得到了高分辨率目标一维距离像。仿真结果表明,匹配滤波器具有较强的抗噪能力,去噪处理在硬件数据处理的采样率方面具有优势。该工作可以为在不同场景下选择最佳的脉冲压缩方法提供理论依据和指导。
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引用次数: 26
期刊
2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering
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