共查询到19条相似文献,搜索用时 171 毫秒
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针对人体下肢受伤康复等问题,设计了医疗助力下肢外骨骼机器人.对下肢外骨骼系统进行了基本结构设计,把下肢运动分单腿、双腿支撑的不同时期,进行了下肢外骨骼系统动力学计算.通过Lagrange方程,得到各关节力矩计算公式,建立了三维模型,利用基于接口的协同仿真技术并结合ADAMS和MATLAB软件对外骨骼进行联合仿真,得到单腿支撑时期各关节角度变化曲线及力矩变化曲线,对比仿真数据和理论计算数据,验证了理论模型的合理性.通过下肢外骨骼仿真分析设计,为后期下肢外骨骼运动控制及模型制造提供重要数据与理论基础. 相似文献
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《中国计量学院学报》2015,(3):274-279
利用ADAMS软件建立动态轨道衡称重系统模型,并通过实际测量来验证其可靠性,使软件仿真取代动态称重现场数据采集,降低测量劳动强度.首先根据实际的轨垫式轨道衡的称重结构原理建立模型,利用单一变量法改变质量或者速度,进行仿真称重过程,从而得到在不同的负载、不同速度下的仿真称重数据.然后再利用动态轨道衡实测相应数据,与软件仿真结果比较分析.结果表明,当车辆速度在20km/h以内,模型仿真结果与实际实验结果吻合,验证了动态轨道衡称重模型的可靠性,可用软件仿真取代动态称重现场数据采集工作,为动态轨道称重补偿研究奠定理论基础. 相似文献
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项目的施工是资源耗用过程,所以合理的配置资源和节约资源对项目是十分重要的.因此必须对各种资源的配置与利用进行优化.通过对资源劳动力、设备材料等的合理配置来最优化地实现项目目标. 相似文献
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岩体爆破参数设计的神经网络模型 总被引:6,自引:1,他引:6
应用神经网络系统建立了岩石爆破块度级配要求及岩性等参数与爆破设计参数之间的神经网络模型,利用此模型可以根据开采块度级配要求确定爆破施工参数.仿真结果表明,该网络模型具有很好的应用价值. 相似文献
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沉管隧道基础灌砂模拟试验 总被引:1,自引:0,他引:1
基于相似理论与模拟试验,对沉管隧道基础灌砂的主要参数进行了研究;重点介绍了模拟试验的模型设计、试验流程、试验重点注意事项与试验技术要求,通过试验取得了所需的第一手数据,在对试验成果进行总结分析的基础上,对灌砂施工的主要参数进行了验证分析,其成果可为后续沉管隧道的基础灌砂施工提供参考与借鉴. 相似文献
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Nathan A. Minami Leticia L. Soto Donna H. Rhodes 《Engineering Management Journal; EMJ》2013,25(2):36-43
Abstract:The naval and private construction industries face shared problems in regard to cost over-runs and delays that may be addressed in part through improvements to the construction process. The scope of this study is to examine the naval construction process from design to implementation, with special emphasis on the role of design sharing and constructability. We use the System Dynamics methodology to model the construction process and conduct simulations to examine the impact of project management decisions. We conclude that increased constructability efforts and design sharing mitigate the impact of cost over-runs and project completion delays, and that when limited resources exist it is best to focus improvement efforts early rather than later. 相似文献
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《工程(英文)》2018,4(1):123-130
The New Austrian Tunneling Method (NATM) has been widely used in the construction of mountain tunnels, urban metro lines, underground storage tanks, underground power houses, mining roadways, and so on. The variation patterns of advance geological prediction data, stress–strain data of supporting structures, and deformation data of the surrounding rock are vitally important in assessing the rationality and reliability of construction schemes, and provide essential information to ensure the safety and scheduling of tunnel construction. However, as the quantity of these data increases significantly, the uncertainty and discreteness of the mass data make it extremely difficult to produce a reasonable construction scheme; they also reduce the forecast accuracy of accidents and dangerous situations, creating huge challenges in tunnel construction safety. In order to solve this problem, a novel data service system is proposed that uses data-association technology and the NATM, with the support of a big data environment. This system can integrate data resources from distributed monitoring sensors during the construction process, and then identify associations and build relations among data resources under the same construction conditions. These data associations and relations are then stored in a data pool. With the development and supplementation of the data pool, similar relations can then be used under similar conditions, in order to provide data references for construction schematic designs and resource allocation. The proposed data service system also provides valuable guidance for the construction of similar projects. 相似文献
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以成熟的仿真培训系统为基础,结合本单位的实际情况,对其进行二次扩展,这样即节省了大量的资源,又可以让仿真培训系统能不断改进和完善。本文中尼尔基水电厂运行仿真系统以被培训对象的角度进行设计,介绍了该系统所具有的几个特点。 相似文献
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In this paper, on the basis of the Monte Carlo simulation, we demonstrate a method to realize logical operations by the use of the single-electron charge-induced signal transmission (CIST) circuit which we have proposed previously. First, we propose three new-type signal transmission circuits. Then, we demonstrate through construction of a NAND circuit and a full-adder circuit on the basis of the Monte Carlo simulation that we can construct any logic circuit by the use of these circuits. Since the CIST circuit can perform any logical operation and can transmit the state of the presence or absence of an electron and a hole as a binary signal over long distance during one clock cycle bidirectionally, these CIST circuits are expected to be applied to integrated circuit devices as a new circuit construction method. 相似文献
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民族旅游文化包装创新 总被引:2,自引:2,他引:0
以贵州朗德上寨的民族旅游文化包装案例为启示,通过对贵州传统文化的分析和调研,论述了利用该地区的旅游资源进行文化包装创新发展的过程。在此基础上,提出了通过视觉传达和包装设计等手段实现传统文化的设计增值,从而促进地区传统文化和经济协调发展的创新模式的展开。 相似文献
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长距离引水隧洞常具有埋深大、洞线长、洞径大和工程地质条件极其复杂等特点,各工序工程量大,相互间影响巨大,因此,在实际施工过程中内外环境和约束条件可能发生变化,使原定的施工进度计划与实际施工进程不可避免地产生偏差。如果这种偏差不及时纠正,将会越来越大,以致原计划进度起不到指导实际施工的作用。文章利用计算机仿真技术、控制论思想和虚拟现实技术,提出了基于仿真的长距离引水隧洞施工全过程进度实时控制与可视化分析方法,对施工进度的实时控制提供了可行性研究和科学依据。 相似文献