燃料电池在舰船上应用前景的研究

文章介绍了燃料电池的特点和类型,从船用的角度分析比较了几种燃料电池的特点,并以PEMFC燃料电池为例与传统的柴油发电机组在性能上进行了比较,最后对燃料电池在舰船上的应用前景作出了分析和总结.     

船舶电力推进中交流调速技术的应用与发展

介绍了交流调速技术在船舶电力推进中的应用现状，阐述了船舶电力推进中交流调速技术的发展方向。多相变频调速技术、嵌入式技术、智能化技术将是未来船用交流调速技术发展的重要研究方向。     

某船推进装置的计算机仿真

该文介绍利用动态仿真软件-MATLAB/SIMULINK对使用可回转推力器的船舶推进装置建立了图形仿真模型，并进行了加速、减速以及从全正车到全倒车等运行工况动态过程仿真和分析，取得了理想的结果。     

嵌入式系统在船舶监控系统中的应用研究

嵌入式系统具有体积小、功耗低、可靠性高等特点．非常适合船舶领域的应用。本文总结了嵌入式系统的特点，提出了嵌入式系统在船舶监控系统中的应用可行性．并对嵌入式系统与其他船用现场监控系统的性能进行比较。     

美国集装箱安全倡议的装船实践

美国海关“装船前24h申赧舱单规则”的实施，使大多数货主运输威本增加，而中国作为与美国主要贸易往来的国家，这笔费用就更显庞大。介绍了货主减少费用、降低产品物流成本的方法和实践。     

客渡船紧急停船仿真研究

本文着重于采用两种控制策略对紧急停船所需距离进行仿真预测。首先建立船机桨的数学模型，利用动态仿真软件MATLAB／SIMULINK，建立推进系统的动态仿真模型。通过对仿真模型的运算及分析，预测恒转速及变转速模式两种情况下应急停船距离，结果显示均能满足设计要求。     

固体氧化物燃料电池作为动力源在船舶应用中的关键技术问题

固体氧化物燃料电池系统具有高效率、低噪声、低电磁信号等显著优点,是未来船舶动力源的最有力竞争者之一。固体氧化物电解质薄膜制备技术、压缩密封技术、催化剂及其涂附技术和双极板的制备是其应用于船舶动力源的关键技术。本文详细介绍了这些关键技术的研究现状,并分析其发展趋势。随着这些技术的发展和成熟,固体氧化物燃料电池在船舶上将会获得更加广泛的应用。     

Robust adaptive horizontal vibration isolation of towed seismic streamers

The horizontal vibration of towed seismic streamers is a main reason for efficiency reduction of the seismic survey and tail tangling. A vibration suppression scheme of towed seismic streamers is investigated in this paper. The towed seismic streamer is divided into two spans, a controlled span, i.e., the low tension span, and an uncontrolled span, i.e., the high tension span, by a bird. The system model includes a hyperbolic partial differential equation with variable coefficient describing the towed seismic streamers, and an ordinary differential equation describing the dynamic of bird. Robust based-model knowledge and adaptive controllers, based on the Lyapunov method, are designed to isolate the vibration of towed seismic streamers caused by the course deviations of towing vessel, the variations of towing vessel velocity and the variations of towed seismic streamer density. The robust based-model knowledge and adaptive controllers exponentially and asymptotically drive the span-towed seismic streamer displacement to zero, respectively. A finite difference scheme is used to validate the efficiency of the control law. The proposed controller can isolate effectively the disturbance originated from the towed vessel, and can provide the improved damping but not sacrifice the isolation performance. The adaptive scheme can tolerate the lack of knowledge of some uncertain parameters and can directly execute the online adjustment of the parameters. Meanwhile, the proposed control law is robust and can resist the model uncertainty due to parameter incertitude, model error and unknown disturbance and so on. The control law only includes velocity and slope, while it does not need the displacement which is difficult to measure in the practical operations. Thus it is easy to implement.     

工程系统模糊故障诊断现状

该文综述了工程系统模糊故障诊断研究的最新研究成果及它的技术难点和发展趋势。ＦＦＤ技术将为复杂工程系统故障诊断的智能化提供有效的技术支撑。     

船舶动力装置故障诊断与专家系统的开发

采用热力参数分析法专家系统对船舶动力装置额定工况下的故障进行实时诊断,详细分析了热力参数与故障间的关系,并给出了故障诊断子系统的推理机和知识库的设计开发方法,推理机和知识库采用专家系统开发工具CLIPS语言实现。