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找到报告 2147 篇 当前为第 188 页 共 215

所属行业:铁路、船舶、航空航天和其他运输设备制造业

  • 1871.用于在深海高压应用集成ISFETpH传感器的研制

    [铁路、船舶、航空航天和其他运输设备制造业,计算机、通信和其他电子设备制造业] [2013-12-21]

    The long-term goals of this project are to enable observations of pH in the ocean at depths to 2000 m using sensors deployed on autonomous platforms, particularly profiling floats of the type used in the Argo array. These systems will enable robust, basin-scale observations of changing pH driven by natural and anthropogenic processes. Develop a robust and stable pH sensor for deep-sea applications that is based on the Honeywell Durafet Ion Sensitive Field Effect Transistor (ISFET). The sensor should operate to depths of at least 2000 m. It should have a precision of 0.001 pH and a stability of 0.005 pH over periods up to 5 years throughout the oceanic temperature and salinity range. Capabilities will be demonstrated with deployments on four Webb Research Apex profiling floats.
    关键词:传感器;深海;场效应晶体管;高压;探测器;离子;原型;时间序列分析;离子敏场效应晶体管(离子敏场效应晶体管);pH值(潜在氢);pH传感器;海洋酸化;热(夏威夷海洋时间序列)
  • 1872.开路谐振传感器(sansec)在飞机雷电环境中的复合材料损伤检测和诊断

    [计算机、通信和其他电子设备制造业,铁路、船舶、航空航天和其他运输设备制造业] [2013-12-21]

    Composite materials are increasingly used in modern aircraft for reducing weight, improving fuel efficiency, and enhancing the overall design, performance, and manufacturability of airborne vehicles. Materials such as fiberglass reinforced composites (FRC) and carbon-fiber-reinforced polymers (CFRP) are being used to great advantage in airframes, wings, engine nacelles, turbine blades, fairings, fuselage and empennage structures, control surfaces and coverings. However, the potential damage from the direct and indirect effects of lightning strikes is of increased concern to aircraft designers and operators. When a lightning strike occurs, the points of attachment and detachment on the aircraft surface must be found by visual inspection, and then assessed for damage by maintenance personnel to ensure continued safe flight operations. In this paper, a new method and system for aircraft in-situ damage detection and diagnosis are presented. The method and system are based on open circuit (SansEC) sensor technology developed at NASA Langley Research Center. SansEC (Sans Electric Connection) sensor technology is a new technical framework for designing, powering, and interrogating sensors to detect damage in composite materials. Damage in composite material is generally associated with a localized change in material permittivity and/or conductivity. These changes are sensed using SansEC. Unique electrical signatures are used for damage detection and diagnosis. NASA LaRC has both experimentally and theoretically demonstrated that SansEC sensors can be effectively used for in-situ composite damage detection.
    关键词:传感器;SansEC;复合材料;飞机
  • 1873.气动伺服弹性的基于传感器的控制

    [铁路、船舶、航空航天和其他运输设备制造业,计算机、通信和其他电子设备制造业] [2013-12-21]

    Flight systems operating new performance and stability limits require continuous, robust autonomy through real-time performance-based measurements.
    关键词:传感器;飞机系统;操作性能
  • 1874.美国航空航天局格伦研究中心的传感器和电子项目简介

    [计算机、通信和其他电子设备制造业,铁路、船舶、航空航天和其他运输设备制造业] [2013-12-21]

    Aerospace applications require a range of sensing technologies. There is a range of sensor and sensor system technologies being developed using microfabrication and micromachining technology to form smart sensor systems and intelligent microsystems. Drive system intelligence to the local (sensor) level -- distributed smart sensor systems. Sensor and sensor system development examples: (1) Thin-film physical sensors (2) High temperature electronics and wireless (3) lick and stick; technology. NASA GRC is a world leader in aerospace sensor technology with a broad range of development and application experience. Core microsystems technology applicable to a range of application environments.
    关键词:传感器;测量仪器;微电子学;气体检测器;薄膜;微加工;烟雾检测器
  • 1875.对先进飞机结构健康监测传感器系统识别

    [铁路、船舶、航空航天和其他运输设备制造业,计算机、通信和其他电子设备制造业] [2013-12-21]

    Environmental conditions, cyclic loading, and aging contribute to structural wear and degradation, and thus potentially catastrophic events. The challenge of health monitoring technology is to determine incipient changes accurately and efficiently.
    关键词:传感器;健康监测系统;系统辨识;算法;空气动力学;飞行试验;飞行安全
  • 1876.日本商用飞机市场报告(2014-2018年)

    [铁路、船舶、航空航天和其他运输设备制造业] [2013-12-21]

    Japan is a potential market for the manufacture of commercial aircraft parts and MRO services. Currently, there is no company in Japan that completely manufactures commercial aircraft. Thus, the country relies on the import of commercial aircraft from other regions such as North America and Europe. However, there are some vendors in Japan that manufacture commercial aircraft parts for Airbus SAS, The Boeing Co., Bombardier Inc., and Embraer SA. Mitsubishi Heavy Industries Ltd. is one such player in the country; Mitsubishi Heavy Industries is in the process of manufacturing MRJ, which is expected to be launched in the market in the coming few years.
    关键词:商用飞机零部件;服务制造;日本;生产商用车;飞机零部件
  • 1877.机械设备行业:精选成长,重视周期-2014年投资策略

    [专用设备制造业,铁路、船舶、航空航天和其他运输设备制造业] [2013-12-18]

    改革指引投资预期:十八届三中全会指向渐进式的改革,旨在控制风险、激活经济,而非破坏性的重建。国内投资增速下行缓慢:013年以来,我国城镇固定资产投资增速保持在20%左右,但新开工项目计划总投资增速仅为14.3%,预示着2014年投资增速仍将缓慢回落。海外经济运行平稳。机械产品需求企稳,部分行业产能有所去化。
    关键词:工程机械;造船;船舶;铁路
  • 1878.整体业绩低迷,继续关注业绩优异成长性良好个股——机械行业2013年三季报综述

    [铁路、船舶、航空航天和其他运输设备制造业,专用设备制造业] [2013-12-14]

    本报告关注点:前三季度机械行业整体业绩较为低迷;自上而下,关注油气钻采设备、铁路设备和航天军工板块,回避工程机械、矿山机械、重型机械、船舶等强周期行业;自下而上,关注部分业绩优异,成长性良好的个股。投资要点:机械行业上市公司业绩持续低迷。行业整体处于景气低谷,深入发掘成长性较好细分板块。风险提示:注意国内基建、房地产等固定资产投资增速下滑的风险;国际经济环境不确定性风险。
    关键词:机械;铁路设备;石油钻采设备;能源化工设备;航天军工
  • 1879.港务安全信息共享系统的最佳解决方案的实验探索

    [信息传输、软件和信息技术服务业,铁路、船舶、航空航天和其他运输设备制造业] [2013-12-13]

    In the wake of the attack of 9/11, the United States government recognized that the manner in which threats and information were conveyed was extremely inefficient, and in many cases completely nonfunctional due to disparate data failing to become accurately coalesced. This is especially true within the area of intermodal cargo shipping. Our research explores and seeks to inform the development of requirements for an information sharing system amongst harbor cargo operators engaged in intermodal shipping. Through interviews conducted of the Naval Postgraduate School's Multimodal Information Sharing Team's (MIST's) federal and local partners, careful examination of existing MIST findings, and research into best practices in information system design, we seek to provide an analysis of current needs and recommendations for improvements to communications about threats to intermodal shipping. Our qualitative findings, found through interviewing communication systems operators and users, indicate that the generalized lack of trust has created limits to communication that have manifested themselves in different electronic solutions that appear to have been developed without direct input from operators. We also find that there exist overland enterprises (e.g., trucking industry) that lack the motivation to provide funding for improved communications infrastructure. Future research efforts may include further identification of communication barriers (e.g., costs) to improve shared communications systems.
    关键词:电子信息;信息安全;网络安全;港务;信息共享
  • 1880.公共交通系统运营决策的混合预测控制

    [信息传输、软件和信息技术服务业,铁路、船舶、航空航天和其他运输设备制造业,计算机、通信和其他电子设备制造业] [2013-12-13]

    The optimization of the real-time operations associated with a bus system is formulated under a hybrid predictive control (HPC) approach. Both the objective function and the predictive model are essential for HPC design. For the sake of simplicity, in this work, the HPC framework is constructed for a single-loop bus system, although it could be extended to more complex systems according to a similar modeling framework. The system is represented in Fig. 4.1. The network is a one-way loop route with P equidistant stops and b buses running around the loop under the control of the dispatcher.
    关键词:电子信息;系统;公共交通;运营决策
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