9 research outputs found

    Ship integral control system and control method

    No full text
    本发明公开了一种船舶一体化控制系统及控制方法,控制系统包括监控层、服务器层、设备控制层和设备层,所述监控层,通过角色分配,拥有不同角色的船舶工作人员将获取到相应的操作权限;所述服务器层,负责监控层与设备控制层的数据交换;所述设备控制层,负责接收服务器的控制指令并作用于设备,接收来自设备的数据并向服务器发送相应的监控参数;所述设备层,负责参数监测,或接收控制指令并直接完成具体的船舶正常运作。本发明控制系统中的无线网关具有标准数据通信接口和物理接口,兼容现有测控系统,实现异构网络的物理连接和互操作,解决当前异构网络难以实现互联互通的难题

    Power balance scheduling method for refrigerated container ship

    No full text
    本发明公开了一种冷藏集装箱船功率平衡调度方法,对冷箱的温度变化规律,冷箱工作状态,冷箱功率及风机工作状态建立数学模型,设定总事实功率的目标值,采用遗传算法来实现对冷藏箱的调度,使得总事实功率值始终接近目标值。本发明通过访问船上装配的冷藏集装箱监控系统数据库,读取所有冷藏集装箱的实时温度及状态信息,通过遗传算法求出冷藏集装箱的最优调度策略对冷藏集装箱及风机的工作状态进行调度,在保证冷藏集装箱温度安全的情况下实现功率“削峰填谷”,维持负载功率平衡,可起到降低成本和节约运费的作用

    Indentation Creep Behavior in Ce-Based Bulk Metallic Glasses at Room Temperature

    No full text
    The room temperature creep behaviors of Ce-based bulk metallic glasses were examined by the use of nanoindentation. The creep rate and creep rate sensitivity of Ce-based BMGs were derived from indentation creep curves. The low creep rate sensitivity of Ce-based BMGs indicates that the room temperature creep is dominated by localized shear flow. The experimental creep curves can be described by a generalized Kelvin model. Furthermore, the creep retardation spectrum is calculated for the Ce-based metallic glasses. The results showed that creep retardation spectrum consists of two relatively separated peaks with the well defined characteristic relaxation times

    Study of Serrated Flow and Plastic Deformation in Metallic Glasses Through Instrumented Indentation

    No full text
    The plastic deformation behavior and serrated flow in seven bulk metallic glass (BMG) systems were investigated through instrumented indentation. These materials include Ce65Al10Ni10Cu10Nb5, Mg65Cu25Gd10, Pd43Ni10Cu27P20, Cu60Zr20Hf10Ti10, Pt57.5Cu14.7Ni5.3P22.5, N60Nb37Sn3 and Fe43Cr16Mo16C15B10 BMGs, which show a glass transition temperature (T-g) ranging from 360 to 908 K at a heating rate of 0.33 K/s. Remarkable difference in deformation behavior was found among these BMGs in the load-depth curves during nanoindentation. Prominent serrations are observed in Mg-, Pt- and Pd-based BMGs with medium 7, during the loading process, whereas no distinct serrated flow was found in Ce-, Ni- and Fe-based BMGs with quite low or high T-g, The subsurface Plastic deformation regions after indentation were investigated using depth-sensing microindentation to characterize the shear band feature developed in various BMG systems. The size of the shear band upset is found to be larger in the alloys with lower T-g. The effect of T-g on the operation of shear bands and the serrated flow behavior in various BMG systems were discussed. (c) 2006 Elsevier Ltd. All rights reserved

    沙漠和积雪与区域气候变化的研究

    No full text
    简要技术说明 本项目为六个科研项目的集成,工作起止时间为1999~2008,10年中投入总经费243万元。本项目具体包括:科技部重大基础前期研究专项1项“天山北部沙漠-绿洲-冰雪带的水热循环与环境效应研究”(2002CCA04600,2003~2005);国家自然科学基金项目3项:“新疆北部气候突变及其对生态环境的影响” (40475041,2005~2007)、“新疆天山北坡经济带气候变化对地表水的影响及对策” (40265002, 2003-2005)、 “新疆北部积雪对地生态学的作用研究”(49871004,1999~2001);科技部科研条件工作项目1项“树木年轮宽度数字化..

    JUNO Sensitivity on Proton Decay pνˉK+p\to \bar\nu K^+ Searches

    Get PDF
    The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in pνˉK+p\to \bar\nu K^+ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via pνˉK+p\to \bar\nu K^+ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is 9.6×10339.6 \times 10^{33} years, competitive with the current best limits on the proton lifetime in this channel
    corecore