共查询到20条相似文献,搜索用时 15 毫秒
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为研究不同客流状况下轨道交通的运行效率和应急方案效率评估,以及突发事件下应急策略的仿真和定量分析,提出了一种城市轨道交通运行仿真平台。该系统从列车运动模型、自动列车控制(ATC)系统结构模型、轨旁设备对象功能模型和移动闭塞系统模型等4个方面对城市轨道交通运行仿真系统进行建模。在此基础上,以VC++作为开发平台,结合计算机网络以及数据库技术,设计并实现了完整的地铁运行仿真平台。在时刻表的驱动下,仿真平台可以实现列车的自动运行。该系统以轨道交通8号线数据进行验证,仿真结果与真实时刻表达一致。 相似文献
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针对运动控制系统课程在传统教学中,学生在课程理论知识学习和利用Matlab/Simulink仿真阶段,缺少实际控制单元设计与开发实际工程训练的问题,设计了一个基于Matlab的运动控制系统实验平台,在实验平台使用基于模型设计的方法可实现从仿真测试到实物测试一体化;通过介绍实验平台中的PC端环境配置流程以及实验平台中驱动器的构成给出了实验平台的总体设计方案;说明了实验平台应用基于模型设计的方法实现代码自动生成的流程,并对基于模型设计的开发流程进行了详细的阐述;通过案例永磁同步电机转速、电流双闭环控制系统在实验平台经过模型在环仿真、软件在环仿真、处理器在环仿真,最后到实验平台进行实物测试的流程与实验结果来达到验证实验平台的优点及其可行性和有效性的目的。 相似文献
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Michael H. Hohn 《Software》2004,34(9):797-813
This paper describes a concise specification language for linear partial differential equations (PDEs) on a union of rectangles, along with three tools: a pretty-printer, TEX generator, and a code generator. The pretty-printer and TEX generator help users by allowing equations to be specified (and read) in their natural form, while the code generator allows implementors to separate their numerical solver from the input equations, and greatly simplifies testing. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
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针对半实物仿真飞行平台在飞行科目评估、平台寿命研究及操作标准规范的制定等诸多领域缺乏完整原始数据支持的问题,提出了一种基于LabVIEW的通用型飞行参数测试系统.通过模拟座舱操控输入信息,如飞行摇杆、油门杆、开关控制面板和飞行脚舵等模拟指令,实现了与项目相关方的三维视景仿真软件的系统联试.多次测试结果表明:系统能够对飞... 相似文献
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Damianos Gavalas Author Vitae George E. Tsekouras Author Vitae Author Vitae 《Journal of Systems and Software》2009,82(2):355-371
The mobile agent (MA) technology has been proposed for the management of networks and distributed systems as an answer to the scalability problems of the centralized paradigm. Management tasks may be assigned to an agent, which delegates and executes management logic in a distributed and autonomous fashion. MA-based management has been a subject of intense research in the past few years, reflected on the proliferation of MA platforms (MAPs) expressly oriented to distributed management. However, most of these platforms impose considerable burden on network and system resources and also lack of essential functionality, such as security mechanisms, fault tolerance, strategies for building network-aware MA itineraries and support for user-friendly customization of MA-based management tasks. In this paper, we discuss the design considerations and implementation details of a complete MAP research prototype that sufficiently addresses all the aforementioned issues. Our MAP has been implemented in Java and optimized for network and systems management applications. The paper also presents the evaluation results of our prototype in real and simulated networking environments. 相似文献
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基于XML的产业链协同工作平台构件管理技术研究* 总被引:3,自引:2,他引:1
针对产业链协同工作平台体系结构动态扩展性需求,对构件管理技术进行了研究,通过依赖信息和被依赖信息的引入,建立了平台构件关联模型,使某一构件发生变化时,相关的构件能够协同感知;建立了基于XML的构件分类和构件库管理系统。在此基础上,对平台集成框架下业务构件集成开发技术进行了研究,建立了业务构件集成开发环境,并将上述成果在汽车产业链协同工作平台开发中进行了应用验证。 相似文献
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以连续催化重整装置为研究对象,在对其流程及反应机理的研究基础上,利用MATLAB开发了一套基于图形用户界面(GUI)的连续重整装置模拟仿真平台软件。采用结构化设计方法,将平台划分为过程模型、输入/输出、物性计算、参数估计、过程模拟、灵敏度分析、过程优化等7个子模块,并从这几方面介绍了该平台软件的功能和实现方法。平台能够对重整装置内部基本流程进行稳态模拟,并具有灵敏度分析、过程优化等功能。针对国内某炼油厂连续重整装置的模拟结果与实际值吻合较好,表明了该平台软件的有效性。 相似文献
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针对侧信道攻击需要相应的侧信道仿真工具支持的特点,提出一种侧信道攻击仿真环境的设计方案,并侧重分析了该仿真平台的实现技术.该平台将侧信道泄露的仿真实现和分析实现相分离,采用构件技术对其进行封装,具有较强的灵活性.不同的侧信道泄漏信息以及攻击策略都能以构件的形式加入到平台中,使得测试人员可以根据测试需求灵活地选择测试数据和分析策略.在案例分析中,以分组长度为64比特的DES密码算法为测试对象,分别给出真实环境下测量出的功耗曲线和使用仿真平台所得到的功耗曲线. 相似文献
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《国际计算机数学杂志》2012,89(2):289-301
Particular spectral method based on an expansion in double ultraspherical polynomials is proposed to solve a number of eigenvalue problems defined by partial differential equations with constant and variable coefficients.We obtain comparable results with those computed by Liu and Oritz [14] by using Tau-Lines method, El-Hawary [8] by using El-Gendi-Lines method, El-Hawary [7] by using double Chebyshev approximation and Brandt et al.[1] by using multigrid method. 相似文献
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Hyunkyu Park Sojung Kim Yujin Jeong Tim Minshall 《Creativity & Innovation Management》2021,30(1):96-115
Drawing on the mixed methods of qualitative research and agent‐based simulation, this study examines: (a) how end‐users use digital platforms to become customer–entrepreneurs undertaking commercial activities on platforms; and (b) how platform providers can convert this customer entrepreneurship into a revenue stream. Considering that end‐users have traditionally been defined as passive and uncharged actors in platform business models, an in‐depth understanding of their commercial activities and the viable revenue model to monetize this emerging customer practice is warranted. Our qualitative study reveals that customer–entrepreneurs make substantial use of platform offerings to advertise their products; communicate with end‐consumers; and accept payments. These commercial activities are largely exercised for free on platforms, even though they could otherwise serve as a source of revenue. On this point, our simulation results identify two pricing models achieving the generation of nearly identical revenues over time. First, platform providers may charge both advertising and transaction fees, which maximize the survival of professional customer–entrepreneurs. Second, platform businesses may levy advertising fees only, which maximizes the survival of informal customer–entrepreneurs operating on a micro‐scale and part‐time basis. This study offers theoretical, methodological, and managerial implications for platform studies. 相似文献
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《国际计算机数学杂志》2012,89(4):345-355
A boundary integral equation for the numerical solution of a class of elliptic boundary value problems for a strip is derived. The equation should be particularly useful for the solution of an important class of problems governed by Laplace's equation and also for the solution of relevant problems in anisotropic thermostatics and elastostatics 相似文献
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Anna Syberfeldt Ingemar Karlsson Amos Ng Joakim Svantesson Torgny Almgren 《Computers & Industrial Engineering》2013,64(4):987-998
This study presents a platform for industrial, real-world simulation–optimization based on web techniques. The design of the platform is intended to be generic and thereby make it possible to apply the platform in various problem domains. In the implementation of the platform, modern web techniques, such as Ajax, JavaScript, GWT, and ProtoBuf, are used. The platform is tested and evaluated on a real industrial problem of production optimization at Volvo Aero Corporation, a company that develops and manufactures high-technology components for aircraft and gas turbine engines. The results of the evaluation show that while the platform has several benefits, implementing a web-based system is not completely straightforward. At the end of the paper, possible pitfalls are discussed and some recommendations for future implementations are outlined. 相似文献
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为了更有效地对高速铁路列控系统中的设备在投入使用前进行严格的测试.以CTCS-3列控系统中的核心设备之一临时限速服务器作为测试对象,提出了一种软件仿真测试平台的实现方法,分析了临时限速服务器与外部系统的关系,在此基础上建立了测试平台的体系结构,并介绍了仿真环境模块、测试工具模块的设计过程、测试平台搭建方法和平台仿真测试过程.通过仿真测试结果表明,该平台提高了测试效率和灵活性,降低了测试成本. 相似文献