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建立了一种基于硬件加速器FPGA 和指令集模拟器ISS对嵌入式系统功能进行软硬件协同验证的方法。针对此方法的实现,分析了协同验证过程中软硬件交互技术,并给出总线功能模型BFM结构及其实现方法。经实例验证分析表明,基于FPGA和ISS的协同验证方法,在对嵌入式应用系统验证中与其他几种常用方法比较具有较明显的优势。 相似文献
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复杂产品虚拟样机技术研究 总被引:2,自引:0,他引:2
虚拟样机技术尤其是面向多领域支持复杂系统的协同虚拟样机仿真支撑平台的研究已成为研发的热点。通过对Agent技术和WEB服务技术以及虚拟样机仿真系统的长期研究,提出了一种面向多领域的复杂产品虚拟样机仿真支撑平台的实现方案,给出了该仿真支撑平台的基于Agent和WEB服务的系统结构和虚拟样机设计中涉及的机械,电子,控制,软件等领域的智能Agent的统一描述,讨论了虚拟样机仿真支撑系统中Agent间的通信方式并阐明了系统的工作流程和信息集成模式,为虚拟样机的进一步发展和应用奠定了基础。 相似文献
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解决了复杂虚拟样机涉及的数据量大、人员分布广等问题,提出将产品数据管理运用到虚拟机床系统中的重要性.首先对虚拟样机,虚拟开发系统及产品数据管理做了概述.之后结合复杂产品虚拟样机的特点,总结出作为其支撑平台的产品数据管理系统所要具备的要求,针对这些要求重点研究了PDM系统的功能结构树.在对系统结构和功能分析的基础上,认为基于CORBA和Web的产品数据管理是适应复杂虚拟样机特点的有效手段,最后对其实现的技术路线进行了探索. 相似文献
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介绍了基于数据构造虚拟原型开发技术的概念及两个关键技术,通过和现有虚拟原型开发技术比较,给出基于数据构造虚拟原型技术的优点。着重分析在计算机虚拟实验系统开发过程中,如何通过数据构造计算机虚拟器件,以及如何利用数据驱动机制通过虚拟器件的数据模型来实现器件的功能、属性,并最终实现整个虚拟实验。 相似文献
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Vishnu P. Nambiar Sathivellu Balakrishnan Mohamed Khalil-Hani M. N. Marsono 《Computing》2013,95(9):863-896
This paper describes the implementation of a reconfigurable hardware-based genetic algorithm (HGA) accelerator using the hardware-software (HW/SW) co-design methodology. This HGA is coupled with a unique TRNG that extracts random jitters from a phase lock loop (PLL) to ensure proper GA operation. It is then applied and benchmarked with several case studies, which include the optimization of a simple fitness function, a constrained Michalewicz function, and the tuning of parameters in finger-vein biometrics. A HGA solution is necessary in systems that demand high performance during the optimization process. However, implementations that are completely designed in hardware will result in a very rigid architecture, making it difficult to reconfigure the system for use in different applications. This paper aims to solve this issue by proposing a HGA design that provides reconfigurability and flexibility by moving problem-dependent processes into software. The prototyping platform used is an Altera Stratix II EP2S60 FPGA prototyping board with a clock frequency of 50 MHz. The HW/SW co-design technique is applied, and system partitioning is done based on aspects such as system constraints, operational intensity, process sequencing, hardware logic utilization, and reconfigurability. Experimental results show that the proposed HGA outperforms equivalent software implementations compiled with an open-sourced C++ GA component library (GAlib) running on the same prototyping platform by 102 times at most. In the final case study, the application of the proposed HGA in tunable parameter optimization in finger-vein biometrics improved the matching rate, reducing the equal error rate (EER) value from 1.004% down to 0.101%. 相似文献
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以某导弹发射过程为物理原型,在MSC Adams环境下建立对应的虚拟试验系统仿真计算模型,使用多组不同的参数进行仿真计算,获得较为完备的虚拟试验数据及其不同的参数对性能影响的数据,为该型导弹的物理样机设计提供一定的基础技术支持. 通过后续阶段的物理试验表明该仿真计算结果与物理试验结果基本相符. 相似文献
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在介绍虚拟样机原理和分类的基础上,提出了一种基于场景图的虚拟样机系统结构,同时讨论了该系统实现中样机描述与模型生成、场景图动态拆分和组合、人机交互、样机零部件模型准备等几个关键技术和处理方法,用这种方法开发出基于PC机的虚拟样机系统。这种系统在易用、成本和普及方面具有实用性和推广意义。 相似文献
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黄景德 《计算机测量与控制》2006,14(6):701-703,721
在讨论故障诊断领域的研究现状的基础上,分析了机械故障预测技术的发展趋势,探讨了开展虚拟环境下机械故障预测技术研究的力学需求和动力学仿真需求,介绍了机械系统虚拟样机技术,分析了典型机械装备虚拟样机的建造方法及虚拟环境下的样机校核方法,提出了基于虚拟样机的故障仿真预测技术,设计了机械装备故障仿真预测系统的模块化结构,为实现机械故障的早期预测和预知维修开辟了新的思路,这是国际潮流的"可持续发展思想"和我国提出的"清洁化生产模式"在诊断工程中的具体体现,是现代诊断技术的"可持续发展模式",具有良好的工程应用前景. 相似文献
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《Advanced Engineering Informatics》2005,19(2):169-177
In order to catch up with the steps of rapidly changing markets, the product development period of modern mechatronic products has to be as short as possible. However, mechatronic engineering is based on the interaction of mechanical engineering, electronic engineering, and computer science. Therefore, inefficient communication between the engineers who come from different domains becomes a manifest obstruction for accelerating the design of mechatronic products. Nevertheless, innovations in the field of virtual prototyping offer some potential solutions to this problem. In this paper, we present a cooperative virtual prototyping system, which utilizes the concept of solution elements and virtual reality techniques to facilitate assembling and analyzing virtual mechatronic prototypes in a multi-disciplinary workgroup. 相似文献
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Oliver G. Staadt Martin Näf Edouard Lamboray & Stephan Würmlin 《Computer Graphics Forum》2001,20(3):8-16
We present JAPE, a flexible prototyping system to support the design of a new advanced collaborative virtual environment. We describe the utilization of different hard- and software components to quickly build a flexible, yet powerful test bed for application and algorithm development. These components include a 3-D rendering toolkit, live video acquisition, speech transmission, and the control of tracking and interaction devices. To facilitate the simultaneous design of applications and algorithms that take advantage of unique features of new collaborative virtual environments, we provide the developer with a flexible prototyping toolkit which emulates the functionality of the final system. The applicability of JAPE is demonstrated with several prototype applications and algorithms. 相似文献
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《Human-Computer Interaction》2013,28(2):199-233
Computing power is an integrated part of our physical environment, and since our physical environment is three-dimensional, the virtual studio technology, with its unique potential for visualizing digital 3D objects and environments along with physical objects, offers an obvious path to pursue in order to envision future usage scenarios in the domain of pervasive computing.We label the work method virtual video prototyping, which grew out of a number of information systems design techniques along with approaches to visualization in the field of architecture and set design.We present a collection of virtual video prototyping cases and use them as the platform for a discussion, which pinpoint advantages and disadvantages of working with virtual video prototyping as a tool for communication, experimentation and reflection in the design process. Based on more than ten cases we have made the observations that virtual video prototypes 1) are a powerful medium of communication in development teams and for communication with industry partners and potential investors, 2) support both testing and generating ideas 3) are particular suited for addressing spatial issues and new ways of interacting. In addition practical use of virtual video prototypes has indicated the need to take into account some critical issues including a) production resources, b) hand-on experience, and c) the seductive power of virtual video prototypes. 相似文献
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基于虚拟原型的机械多体系统建模可视化 总被引:3,自引:1,他引:2
针对虚拟样机意义下的机械多体系统性能分析,提出一种直接从产品虚拟原型中的零件设计模型和装配模型获取多体系统物理性能属性和空间拓扑结构的理论和方法.将设计模型按照多体系统空间拓扑结构描述,直接映射为抽象的可视模型,并以此向求解模型过渡,从而最终获得对多体系统运动学和动力学的求解,使虚拟样机过程能在短时间内得以成功实施,达到整机动态性能分析的目的,获得满意的结果.最后,通过一个典型的机车车辆模型验证了文中方法的可行性. 相似文献
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虚拟试验验证是一种基于数字样机模型的复杂产品关键系统试验数据产生、获取和分析的系统工程过程;文中从支撑框架、验证范围、试验环境和标准化等方面分析了国外该领域最新的发展趋势,结合十一五国内虚拟试验领域的典型研究和应用现状,对现阶段军工产品虚拟试验验证领域的研究成果进行了总结;在此基础上,分析了十二五试验与测试领域的研究重点,提出了虚拟试验验证技术领域研究的发展设想,并对VITA技术框架进行了着重阐述;最后,给出了发展我国虚拟试验验证技术的建议。 相似文献