CameraLink接口的高速电子存储系统设计

为了满足高速数字图像摄像机的视频数据实时存储的需求,该文给出了一种基于NandFlash的高速电子存储系统的设计。高速电子存储系统具有CameraLink摄像机接口、存储数据的文件管理功能和FTP网络下载功能,最大存储容量为3．84TB,最大数据写入速度可以达到3．2Gbps。     

北京城市轨道交通西郊线系统制式选型研究

论述北京城市轨道交通西郊线系统制式的选择,论证城市轻轨系统的基本运营管理模式和对车辆的基本要求,分析该系统的基本特点和主要适用范围,对城市轻轨系统的未来应用前景进行展望.     

基于反步滑模控制的欠驱动AUV定深运动研究

欠驱动自主水下航行器(autonomous underwater vehicle,AUV)深度控制是完成水下作业任务的重要基础,为了在复杂海况中抑制外界产生的干扰,更稳定地实现欠驱动AUV垂直面上的定深运动控制,设计基于虚拟控制律和反步法结合的滑模控制器(sliding mode controller,SMC)。首先,引入固定坐标系和运动坐标系之间的坐标转换,建立垂直面运动误差模型,将深度误差的镇定转换为纵倾角和纵倾角速度误差的镇定;然后利用李雅普诺夫（Lyapunov）稳定性理论证明控制器的稳定性。最后,仿真结果和海试表明,本文设计的控制器能够有效完成给定深度的运动控制,且对外界干扰有一定的鲁棒性。     

基于ADO技术在城市轨道交通管理系统中的应用

城市轨道交通管理系统包含了时刻表、列车运行图和列车运行调整等功能。其中时刻表是该管理系统中重要的组成部分,对行车调度起到至关重要的作用。该文采用了MFC开发应用程序,使用SQL作为数据库后台,把列车时刻表存放SQL中,并使用Visual C++中的控件数据对象(ADO)数据库访问技术来使软件与数据库通信,实现了在VC中用ADO接口编写软件对数据库进行读写,以达到对时刻表的管理。     

基于Kane动力学和通路矩阵的水下自重构机器人建模

文章推导出基于通路矩阵和Kane方法的水下自重构机器人的运动学和动力学方程。引入图论的知识解决水下自重构机器人的统一构形描述问题,提出采用通路矩阵描述水下自重构机器人的不同构形,结合Kane方法,建立了水下自重构机器人的运动学和动力学模型。以水下自重构机器人的典型构形(水下四足行走构形)为例,验证了该方法的有效性和可用性。     

超空泡射弹研究综述

对国内外超空泡射弹研究现状进行综述.介绍国外超空泡射弹研究历程,阐述超空泡射弹研究建立的各种模型,总结超空泡射弹数值计算和实验研究成果,最后对超空泡技术领域的研究方向进行展望.     

Dynamic model of underwater snake-like robot using Kane’s method

In this paper, a dynamic model for an underwater snake-like robot is developed based on Kane＇s dynamic equations. This methodology allows construction of the dynamic model simply and incrementally. The partial velocity is deduced. The forces which contribute to dynamics are determined by Kane＇s approach. The generalized active forces and the generalized inertia forces are deduced. The model developed in this paper includes inertia force, inertia moment, gravity, control torques, and three major hydrodynamic forces： added mass, profile drag and buoyancy. The equations of hydrodynamic forces are deduced. Kane＇s method provides a direct approach for incorporating external environmental forces into the model. The dynamic model developed in this paper is obtained in a closed form which is well suited for control purposes. It is also computationally efficient and has physical insight into what forces really influence the system dynamics. The simulation result shows that the proposed method is feasible.     

现代舰炮控制系统技术发展研究

论文基于对传统舰炮控制系统结构组成和技术特点的分析,提出了面向未来网络化海战,具备综合化武器控制思想的现代舰炮控制系统概念,探讨了现代舰炮控制系统应具备的基本技术特征,以及标准化设计、人工智能理论等关键技术在现代舰炮控制系统的应用前景。     

Refrigeration Performance Analysis and Its Applicability of a New Metal Hydride Couple in Auto Air-conditioning

With COP and dynamic characteristics in refrigeration cycle as criteria,a new metal hydride couple--LaNi4.61Mn0.26Al0. 13/La0.6Y0.4Ni4.8Mn0.2 was selected by establishing calculation procedure and metal hydride selection model. The experimental results show that the refigeration cycle of the selected couple is good in the performance. The recovered waste heat and refrigeration power from exhaust gas of several kinds of automobile are calculated by waste-heat formula ,coefficient RQ and COP. Refrigeration cycle of the new couple can satisfy the air-conditioning requirement of truck and car and is not enough in passenger car,according to the respective cooling load.