共查询到18条相似文献,搜索用时 156 毫秒
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基于DEVS的BOM组件与仿真引擎研究 总被引:1,自引:1,他引:0
在组件化建模与仿真领域内,基于BOM规范的KD-XSRFrame组件建模与仿真框架得到了广泛的应用,但是以离散时间仿真为手段的设计模式使得由BOM组件构成的仿真系统性能不高。因此,如何提高运行效率成为基于BOM的组件式建模与仿真必须解决的问题。根据现有组件系统的不足,引入离散事件的概念重新设计了BOM组件模型和仿真引擎,提出了基于离散事件系统规范的BOM组件建模框架,实现了以事件为中心的仿真引擎。测试结果表明该系统能有效地减少模型调用和引擎工作的开销,显著地提升了整个仿真系统的运行性能。Abstract: In the field of MS of Component, the modeling and simulation framework based-on Basic Object Model (BOM) named KD-XSRFrame has been used widely, but its performance is inefficient for the design basis of discrete time. And the key issue in BOM component MS is how to improve the performance of simulation application. The deficiencies of legacy system was profoundly discussed, the BOM component and its engine were reengineered by using the concept of discrete event, a new modeling framework of BOM base-on Discrete Event System Specification was put forward, and a new engine was designed which focused on events. The experiment shows that the BOM component and engine of discrete event can sharply decrease the spending of model function calling and time advancing, and greatly improves the performance of simulation application system. 相似文献
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以空间跟踪与监视系统(Space Tracking and Surveillance System,STSS)为仿真对象,基于高层体系结构(High Level Architecture,HLA)分布式仿真技术设计、开发STSS仿真系统。分析了STSS技术特点及仿真需求,按照基本对象模型(Base Object Model,BOM)开发标准构建系统的层次化联邦架构,提高了系统开发效率和模型的可重用性。通过对不同场景的多次仿真,初步验证了STSS的性能指标,说明该系统具有良好的适应性。Abstract: Based on HLA distributed simulation technology, design and implementation of STSS simulation system, the technical traits of STSS system and demands of simulation were analyzed. According to BOM development standard, a framework in hierarchy of STSS simulation system was constructed, which has effectively improved the efficiency of system realization and the capability of model reuse. By simulating the different scenarios repeatedly, the performance parameter of the STSS simulation system was tentatively verified, and applicability of the simulation system was proved. 相似文献
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围绕大规模多智能体分布仿真平台的软件体系结构设计问题,提出软件设计的关注点空间模型,然后基于关注点设计—实现二元关系形式化描述横切关注点问题;使用面向方面建模方法对仿真平台中交错关注点进行分离;并对具体实现系统使用面向方面编程进行体系结构与代码优化。研究结果表明,方面的使用可以在不同关注点模块化中获得对系统软件系统结构设计的改良,且将使系统具有精简的代码,更少的设计和实现组件和组件间更低的耦合。Abstract: To deal with the software architecture problem of designing a large-scale distributed platform for multi-agent simulation, a concerns space model for software design was proposed. Then a binary relationship mapping from design concerns to implemented component was used to formalize the cross-cutting concerns relevant problem. With aspect-oriented modeling techniques, tangling concerns in the simulation platform were separated more explicitly. Finally, architecture and code optimization work was done on the implemented platform with aspect-oriented programming. Results show that the use of aspects allows the construction of target system with a significant improvement in the software architecture. Also, the use of aspects resulted in: fewer lines of code, fewer design and implementation components, and lower coupling between the components. 相似文献
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基本对象模型(BOM)在HLA仿真系统中的应用 总被引:4,自引:5,他引:4
为了促进在世界范围政府部门和非政府部门的仿真互操作能力,仿真互操作标准组织(SISO)引进BOM支持和提高仿真组件的重用性。BOM作为一种促进互操作性、重用性和可组合性的实现机制,鼓励灵活、快速、有效地开发和管理模型。通过研究BOM模板规范和体系结构,设计基于BOM的通用HLA仿真框架,实现通过基于BOM的仿真模型组件快速组合和重用,从而构建具有功能可扩展性和规模可控性的多样性联邦成员和联邦,提高分布式仿真系统的重用性和互操作性。 相似文献
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以模块化建模方法为指导,提出了液压系统的热力学模块化建模方法。将液压元件工作机理分为容积型和阻尼型,建立容积型模块和阻尼型模块模型,由容积型模块和阻尼型模块单独或组合建立液压元件的模块化模型。采用Dymola对所建立的各元件模型进行仿真实现,建立了温度仿真模块库-ThermalHydraulic,可以实现面向液压原理图的可视化温度仿真。对模块库进行测试,验证了建模和仿真实现的可行性。Abstract: According to the modular modeling method,a thermal-hydraulic modular modeling method of hydraulic system was presented. Basic operating principles of all hydraulic components were divided into two types:volume and resistance. Volume model and resistance model were developed to represent the volume and resistance characteristic of hydraulic component. Component's modular model was established by signal or both of volume model and resistance model. Then,the hydraulic system temperature simulation modular library-Thermal Hydraulic was established by Dymola software,and the library could establish system model conveniently by visual modeling style based on hydraulic principle figure. At the last,the system test was made to evaluate the feasibility of modeling and simulation. 相似文献
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基于Extend与HLA的装备保障仿真集成研究 总被引:1,自引:0,他引:1
分析了Extend应用于装备保障仿真的不足,在讨论基于HLA的装备保障仿真系统的基础上,提出了Extend与HLA/RTI的四种仿真集成方式,依据Extend模型是否需要与HLA/RTI进行时间同步分别给出了集成方法,设计了基于适配器的Extend与HLA集成框架,详细说明了适配器的组成功能及工作流程,最后利用一个装备保障仿真系统应用实例证明了仿真集成的思路是可行的和必要的。Abstract: Because of the shortages of Extend software applied to equipment support simulation,four integration types between Extend and HLA were proposed about the building of equipment support simulation system based on HLA.According to whether Extend simulation model was synchronous to HLA/RTI on the mechanism of advance simulation time,the methods were respectively put forward to support these types,and an integration architecture between Extend and HLA was designed based on a general adaptor.The components and functions of this adaptor,and its running mechanism were detailedly analyzed later.Finally,an application of a simulation system proves that the idea to integrate the two platforms is feasible. 相似文献
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WANG Haiwen CHEN Rongqiu WU Jibing 《系统科学与复杂性》2005,18(4):456-463
An assembly-to-order system, which at the end the buffer distinguishes its assembly stages of the system from the downstream systems, is considered in this paper. The system produces semi-finished products for the downstream system and starts from a basic subassembly, and at each stage a component is assembled into the corresponding subassembly. The basic subassembly, components and buffer all follow a periodic-review, order up-to-level inventory policy. The buffer holds the semi-finished products to serve the specific demand from the downstream system. The service level of the system is determined by aggregate effects of the components held at stockpiles before the buffer and the basic subassembly. In order to measure the service level of the system, some notations and assumptions are made, on which the closed form expression of the service level of the system is achieved. 相似文献
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DESIGN METHODOLOGY OF NETWORKED SOFTWARE EVOLUTION GROWTH BASED ON SOFTWARE PATTERNS 总被引:4,自引:1,他引:4
Keqing HE Rong PENG Jing LIU Fei HE Peng LIANG Bing LI 《系统科学与复杂性》2006,19(2):157-181
Recently,some new characteristics of complex networks attract the attentions of scientistsin different fields,and lead to many kinds of emerging research directions.So far,most of the researchwork has been limited in discovery of complex network characteristics by structure analysis in large-scalesoftware systems.This paper presents the theoretical basis,design method,algorithms and experiment results ofthe research.It firstly emphasizes the significance of design method of evolution growth for networktopology of Object Oriented(OO)software systems,and argues that.the selection and modulationof network models with various topology characteristics will bring un-ignorable effect on the processof design and implementation of OO software systems.Then we analyze the similar discipline of“negation of negation and compromise”between the evolution of network models with different topologycharacteristics and the development of software modelling methods.According to the analysis of thegrowth features of software patterns,we propose an object-oriented software network evolution growthmethod and its algorithms in succession.In addition,we also propose the parameter systems for OOsoftware system metrics based on complex network theory.Based on these parameter systems,it cananalyze the features of various nodes,links and local-world,modulate the network topology and guidethe software metrics.All these can be helpful to the detailed design,implementation and performanceanalysis.Finally.we focus on the application of the evolution algorithms and demonstrate it by a casestudy.Comparing the results from our early experiments with methodologies in empirical software engi-neering,we believe that the proposed software engineering design method is a computational softwareengineering approach based on complex network theory.We argue that this method should be greatlybeneficial for the design,implementation,modulation and metrics of functionality,structure and per-formance in large-scale OO software complex system. 相似文献
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《系统工程与电子技术(英文版)》2013,(6):F0003-F0003
Aims and scope
Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and practical aspects of systems engineering,electronics and related research areas.The journal welcomes high quality original papers from a wide range of countries.The scope of the journal includes systems engineering,military systems,electronic technology,defense electronic technology,control theory and practice,software algorithm and simulation,reliability,computer development and application,and other topics in all related fields. 相似文献
Journal of Systems Engineering and Electronics,keeping abreast with the development trend of science and technology worldwide,reports the latest developments and achievements in both theoretical and practical aspects of systems engineering,electronics and related research areas.The journal welcomes high quality original papers from a wide range of countries.The scope of the journal includes systems engineering,military systems,electronic technology,defense electronic technology,control theory and practice,software algorithm and simulation,reliability,computer development and application,and other topics in all related fields. 相似文献
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基于BOM的仿真模型组件研究 总被引:2,自引:0,他引:2
基于组件的建模方法能有效地减少建模任务的复杂性,通过重用、替换、改进以及扩展组件实现快速构建动态的仿真系统和仿真环境。首先描述BOM(Base Object Model,基本对象模型)模板结构,接着分析BOM与SOM(Simulation Object Model,仿真对象模型)/FOM(Federation Object Model,联邦对象模型)的关系,设计基于BOM的仿真模型组件。从语法层和语义层研究仿真模型组件的基本结构,比较仿真模型组件与软件工程组件的区别,并通过支持工具进行仿真模型组件的设计与开发。 相似文献
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大规模分布仿真系统架构设计技术参考模型 总被引:1,自引:0,他引:1
近年来对大规模分布仿真系统产生了更多需求,但对它的架构设计研究还难以充分支撑实际工程开发,为此给出一个技术参考模型,对仿真系统架构的技术体系,以及核心组件进行定义和说明。技术参考模型可以为重构现有系统,以及开发下一代系统提供参考。 相似文献
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传统的光电跟踪系统通过测量目标的斜距离、俯仰角和偏航角来获取目标运动参数。针对附加角速度测量的一类新的光电跟踪系统,充分考虑传感器测量噪声的相关特性,基于非线性估计理论设计了目标跟踪滤波器。首先利用嵌套条件方法推导了转换测量误差前两阶矩的一致性估计,然后采用序贯采样卡尔曼滤波器(SUKF)对解耦后的转换测量进行序贯处理,最后从理论上分析了跟踪滤波器的稳定性并给出了跟踪系统的Cramer-Rao下界(CRLB)。Monte-Carlo仿真表明:滤波器估计误差均方差(RMSE)已逼近非线性跟踪系统的CRLB。Abstract: Generally tradition optic-electric tracking systems can obtain target motion parameters by measuring distance,elevation angle and yaw angle of targets.A target tracking filter taking correlated measurement noises into account was designed for optic-electric tracking systems with angle velocity measurements based on nonlinear estimation theory.Firstly,the consistent first two moments estimate of the converted measurement errors were derived by nested conditioning method;then the converted measurements were sequentially processed according to Sequential Unscented Kalman Filter (SUKF);Finally the stability of the filter was analyzed theoretically and the Cramer-Rao Low Bound (CRLB) of the nonlinear tracking systems was proposed.Monte-Carlo simulation results show that the Root Mean Square of Estimate Error (RMSE) of the filter is closed to the CRLB of the nonlinear tracking systems. 相似文献
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基于复杂系统理论的信息化战争体系对抗仿真 总被引:1,自引:1,他引:0
以复杂系统理论为指导,采用还原论与整体论相结合的研究方法,基于复杂网络拓扑结构、多Agent理论与计算机仿真技术对信息化战争体系对抗作战行为演化的微观作用机制与宏观涌现现象复杂行为机理进行探索性研究,提出基于复杂网络的信息化战争体系对抗建模与仿真的技术路线,建立基于复杂网络与多Agent理论的信息化战争体系对抗仿真模型,分析信息化战争体系对抗建模与仿真的关键技术,探讨信息化战争体系对抗仿真建模的主要方法,并就基于复杂系统理论的信息化战争体系对抗建模与仿真的发展前景进行了展望。Abstract: The micro-interactions and macro-emergence mechanism of evolutive behavior on the combat System of Systems (SoS) created for Net-Centric Operations (NCO) was researched on the guidance of system complexity theory,complexity science and Complex System Theory (CST),combining Reductionism with Holism,on basis of complex network modeling,multi-agent and computer simulation technology.Then,the technical scheme of Simulation of the SoS vs.the SoS of the Net-Centric Operations (MSSNCO) was put forward,which included constructing simulation models for the SoS vs.SoS of NCO on the basis of Complex Network (CN) and Multi-Agent theory.Successively,the key technique of MSSNCO was summarized;at the same time,the major modeling methods of MSSNCO were analyzed.Lastly,development tendency of CN-based MSSNCO was prospected. 相似文献