共查询到19条相似文献,搜索用时 31 毫秒
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装备作战仿真系统是一个复杂的交互型混合动态系统,该文描述了一种基于离散事件系统仿真技术,即通过确定离散系统仿真的基本要素:随机离散事件、仿真时钟及其推进方式、未来时间表、随机数发生器等,并增加对连续系统的等技术,来实现装备作战仿真中连续及离散随机事件的仿真。通过试验,仿真效果满足需求,其成果对从事作战模拟开发研究工作者具有一定的借鉴作用。 相似文献
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混合动态系统起因于离散事件系统用于监控连续状态系统的行。本文用抽象语言方法描述连续状态系统,研究状态离散事件系统描述的一致性。基于输入输出观点简要地 讨论了离散控制器综合。 相似文献
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一类混杂系统的混杂时态Petri网模型 总被引:1,自引:0,他引:1
本语文为一类混杂系统的建模提出了混杂时态Petri网(HTPN)模型,在该模型下,系统的微观连续行为由混杂时态Peti网变迁对应的微分方程描述,宏观行为由变迁对应的离散事件描述,同时在该模型的基础上,讨论了混杂系统的宏观及微观运行问题,并提出了佥状态轨迹的概念来描述系统的动态行为。最后给出一实例来说明模型的合理性和应用。 相似文献
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唐小峰 《计算机测量与控制》2023,31(7):64-70
为在设计早期对复杂自动测试系统进行充分验证从而加速其成熟并降低研发成本,对离散事件系统规范进行扩展和改进,在原子模型中引入了端口和故障模式,通过端口间的连接构成耦合模型,提出一种离散信号事件驱动的仿真调度算法,并给出一个C/S架构的支持远程交互的仿真验证实现方案;基于自研的SCATS自动测试系统软件平台,分别针对一个示例系统和真实系统开展了实验,结果表明所提模型和方法支持复杂系统多分辨率层次化建模,仿真具有较高的一致性和执行效率,满足自动测试系统仿真验证工程应用需求。 相似文献
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本文讨论无环向图和皮特利网描述的一类离散事件动态系统的特征值的求解方法,对事件延迟系统,给出了频域的特征矩阵M(z)的特征值求法,并由之提出一个新的求取闭环无环向图描述的离散系统特征值的方法。 相似文献
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离散事件仿真规范DEVS形式化的一个重要不足在于它缺乏一种标准的、图形化的描述形式。该文研究提出了一种将DEVS的原子模型与复合模型分别映射到UML的状态图和组件图的方法,并用形式化的数学方法对DEVS原子模型向UML状态图的映射过程进行了描述与构造。这种映射将DEVS规范融入到了UML的描述形式当中,将DEVS的抽象化描述与UML的表示能力、计算机处理能力结合起来,为两种建模形式的统一提供了一个可行的思路。该文研究的成果在C^4ISR系统总体方案规范化建模中得到了逐步的应用。 相似文献
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Modelica是一种基于方程的陈述式建模语言,它具有面向对象、数组化表示、连续离散混合和可重用等多种特征,基于Modelica构建的模型和模型库通常规模庞大且结构复杂。编译Modelica模型的时间开销较大。本文从Modelica模型编译的角度出发,结合现有的序列化方法,提出以模型序列化来取代模型编译的部分工作,从而达到提升Modelica模型编译效率的目的。文中实现的Modelica模型序列化技术已在多领域物理系统建模与仿真平台MWorks中进行了验证与应用。 相似文献
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在离散事件模拟领域中存在着大量的模拟软件,但由于它们所采用的建模方式都不够形式化,缺乏统一的,简洁的模型描述方法,从而促使人们寻找新的更具有潜力的方法。本文提出了一个新的基于CSPN模型的离散事件模拟支持环境CSPSE,对它的思想方法,系统设计以及实现技术进行了较为系统的阐述,显示出CSPSE在离散事件模拟领域的广阔前景。 相似文献
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本文通过对一类离散事件动态系统——拆卸生产线的建模,介绍了一种新的概率建模方法——概率流方法.所谓“概率流”是状态间转移概率的一种形象描述,概率流建模的出发点是充分小时间内状态转移概率的流平衡,所得到模型是非线性方程组形式,通过定性分析可证系统是渐近稳定的.此外,本文还讨论了概率流方法与马氏理论的联系与区别. 相似文献
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We introduce a new architecture for the design of a tool for modeling and simulation of continuous and hybrid systems. The environment includes a compiler based on Modelica, a modular and a causal standard specification language for physical systems modeling (the tool supports models composed using certain component classes defined in the Modelica Standard Library, and the instantiation, parameterization and connection of these MSL components are described using a subset of Modelica). Models are defined in Modelica and are translated into DEVS models. DEVS theory (originally defined for modeling and simulation of discrete event systems) was extended in order to permit defining these of models. The different steps in the compiling process are show, including how to model these dynamic systems under the discrete event abstraction, including examples of model simulation with their execution results. 相似文献
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Fouzia Ounnar Patrick Pujo Lynda Mekaouche Norbert Giambiasi 《Journal of Intelligent Manufacturing》2009,20(1):91-111
Managers need to create and sustain internal systems and controls to ensure that their customer focused strategies are being
implemented. Companies are currently in a spiral of permanent optimization. Accordingly, many companies turn to their core
activity. In this framework, one notices the development of the concept of “industrial partnership”. In this context and to
control the customer–supplier relationships (CSR), we proposed a self-organized control model in which all partner entities
(customers/suppliers) negotiate to guarantee good quality connections between customers and suppliers. This means meeting
customer expectations as closely as possible and respecting supplier capacities. In this proposal, self-organized control
is characterized more precisely by an organizational architecture of the flat holonic form type. This flat holonic form is
based on the concept of autonomous control entity (ACE). The holonic architecture, the behaviour of an ACE, the interaction
mechanisms between ACEs and the self-evaluation supplier process are presented, and then the modelling of ACEs using discrete
event system specification (DEVS) is described. An implementation of the simulation of such a system was done via a distributed
simulation environment high level architecture (HLA). A case study illustrating the proposed approach is presented. 相似文献
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A new discrete 3D line and 3D polygon, called Supercover 3D line and Supercover 3D polygon, are introduced. Analytical definitions are provided. The Supercover 3D polygon is a tunnel free plane segment defined by vertices and edges. An edge is a Supercover 3D line segment. Two different polygons can share a common edge and if they do, the union of both polygons is tunnel free. This definition of discrete polygons has the “most” properties in common with the continuous polygons. It is particularly interesting for modeling of discrete scenes, especially using tunnel-free discrete polyhedra. Algorithms for computing Supercover 3D Lines and Polygons are given and illustrated. 相似文献