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基于虚拟样机技术的动力换档离合器动力学仿真 总被引:1,自引:0,他引:1
该文针对目前自动变速(AT)车辆普遍采用的动力换档离合器,应用大型CAD软件Pro/E和机械系统动力学仿真分析软件ADAMS建立了其虚拟样机模型.并且对离合器在工作过程中的受力状况进行了较详细地描述,得出了其动力学方程.通过对其接合与分离等工况进行动力学分析,最后得到了与实际情况相吻合的仿真结果,并总结出了一套动力换档离合器在ADAMS中设计的简化方法.此外,这个离合器模型还可以作为一个子系统,在今后用于整体动力传动虚拟样机系统的分析与设计. 相似文献
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三轴虚拟仿真转台系统设计及实现 总被引:3,自引:0,他引:3
该文主要采用虚拟样机技术,利用ADAMS软件实现三轴虚拟仿真转台系统的开发设计。该系统通过机械模型调用接口,将转台零件图形库调入软件平台实现模型装配;再通过ADAMS与MATLAB软件之间的仿真接口,将控制器调入转台样机;最终实现机械模型和控制方法的联合仿真分析,获得虚拟转台的特性,包括样机传函和三框运行动静态精度等特性状况。 相似文献
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虚拟样机技术在汽车变速箱设计中的应用 总被引:2,自引:0,他引:2
该文在介绍机械系统动态仿真理论基础,分析机械系统动力学分析软件ADAMS/Engine模块中齿轮传动的算法原理和参数化建模方法基础上,采用虚拟样机的方法对某型号汽车六档变速箱进行仿真分析。在Pro/Engineer中建立了汽车变速箱的三维模型,结合ACF方法在ADAMS/View中实现了换档变速过程的运动仿真,在ADAMS/Engine模块中建立变速箱传动齿轮的参数化动力学模型,并对第五档斜齿圆柱齿轮的传动进行了动力学仿真分析。在模型输入端输入转矩作为动力,在输出端施加各种模拟载荷,仿真后得到了与实验基本一致的动力响应曲线。该文为齿轮和轴的强度校核、机构优化及噪声控制提供了依据,为改进和优化变速箱提供了有效的实验方法。 相似文献
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研究车辆驾驶仿真系统,为达到真实地仿真车辆运动的特性.针对车辆优化运行速度、加速度等性能,需建立实车动力与传动性能的数学模型.在构造了虚拟车辆数学模型框架基础上,根据柴油内燃机车辆动力与传动系统原理,采用曲线重建、数据拟合方法建立了实车运动学、动力学数学模型.通过驾驶仿真器的操作信号,用建立的内燃机、传动系统数学模型求解虚拟车辆运动及动力参数.将采集的实车运行特性数据与求出的虚拟车辆的数据进行了对比分析,结果证明内燃机、传动系统的数学模型与实车系统运动与动力性能的相似程度较高,利用建立系统为实际研究提供参考. 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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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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基于QNX硬加速的软控车载全虚拟仪表平台 总被引:1,自引:0,他引:1
提出基于QNX硬加速的软控车载全虚拟仪表平台方案,引入快速HMI原型设计和逻辑仿真测试技术,以缩短人机交互界面开发周期;设计软控模式下图形元素实时分层渲染模型,实现庞大信息的动态显示;采用基于OpenGLES2.0的GPU硬加速技术提高图形渲染帧率。实验表明:该方案不仅能实时处理车辆内部模块的大量信息,而且能平滑逼真地动态显示瞬时车况信息。 相似文献
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We propose a hardware-software codesign process based on a design methodology called virtual prototyping. With this process, we integrate VHDL models of hardware components with application, control and diagnostic software to rapidly prototype complex, multiboard, embedded microcontroller-based DSP systems. In the virtual prototyping of a demonstration avionics system, in collaboration with Lockheed Sanders, Hughes, and Motorola RASSP teams, we reduced hardware-software integration and system test times from the typical industry figure of 10-24 months to less than a month 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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Electronic innovations that are slowly but surely changing the very nature of driving need to be tested before being introduced to the market. To meet this need a system for integrated virtual prototyping and testing has been developed. Functional virtual prototypes of various traffic systems, such as driver assistance, driver information, and multimedia systems can now be easily tested in a driving simulator by a rapid prototyping approach. The system has been applied in recent R&D projects. 相似文献
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《Ergonomics》2012,55(1-3):41-51
Electronic innovations that are slowly but surely changing the very nature of driving need to be tested before being introduced to the market. To meet this need a system for integrated virtual prototyping and testing has been developed. Functional virtual prototypes of various traffic systems, such as driver assistance, driver information, and multimedia systems can now be easily tested in a driving simulator by a rapid prototyping approach. The system has been applied in recent R&D projects. 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