一种基于光电识别的插卡式电子开关的设计

介绍了利用光电识别原理来制作的“基于光电识别的插卡式电子开关”，是在原有宾馆客房IC卡的任一面，设定好规定的位置上，印制上反射光线的白点和吸收光线的黑点的图案，IC卡插入开关的相应位置有两只反射和接受红外线的器件，读取相应的高低电平，经过逻辑电路的处理，和原来开关一样驱动继电器而输出电压。改制后的插卡取电开关具有只能用宾馆提供的钥匙IC卡来开门并务必用它开通客房的用电开关，才能正常点灯或使用电器；改变了原来进门后用名片或其它物品来打开用电开关，出门时又不关电源带着钥匙卡就走的现状；既节省了电能又消除了安全隐患，用于宾馆的客房，真正做到一卡通。有一定的使用、推广价值和发展前景。     

车辆器材保障能力的综合评价

通过对车辆器材保障系统界定和分析，找出了其主要影响因素，建立了车辆器材保障能力综合评价指标体系；并利用AHP评价方法确定各因素权重，达到初步量化的目的。     

Synchronous electric drive of an elevator operating in close control system

A sample synchronous motor with permanent magnets has been tested in the model of a gearless drive and the results are presented. With the help of mathematical simulation, comparative calculations of synchronous motors with different geometrical sizes are carried out for two types of elevators.     

长钢25m^2电除尘系统改造实践及效果

为保证烟尘排放达标，分析了电除尘器除尘效率低下的原因，并针对原因结合实际对除尘系统进行了技术改造。取得了预期效果。     

汽车与建筑的形态发展

分析了汽车的产生对建筑单体的影响,探讨了汽车对街道的改变,研究了汽车与城市的相互作用,以帮助人们正视汽车与城市的关系,总结发达国家处理两者关系的经验和教训,探索汽车发展和城市发展的双赢之路。     

0．98Na0．5Bi0．5TiO3—0．02NaNbO3无铅压电陶瓷的极化研究

极化显著影响压电陶瓷的应变量和电畴转向率，从而影响其压电性能。本文研究了0．98Na0．5Bi0．5TiO3-0．02NaNbO3压电陶瓷的极化条件。研究表明极化电场为4kV／mm、极化温度为120℃、极化时间为20min时，其压电常数d33最大值为96pe·N^-1。     

Study of impact energy propagation phenomenon and modal characteristics of an armored vehicle undergoing high velocity impact

A new manufacturing technology is being employed to build a new type of armored vehicle. While thick panels are welded together in the old manufacturing technology, relatively thin panels are welded to a frame structure in the new manufacturing technology. The structural integrity of the new type of armor vehicles can be maintained mainly by the frame structures while the panel thickness is reduced significantly to reduce the total vehicle weight. Since the dynamic characteristics of a frame-panel hybrid structure are different from those of the old type of structure which consists of only thick panels, they should be identified to achieve a good performance of the vehicle. For this purpose, a proper FE model of the hybrid type of structure needs to be developed. In the present study, FE models are proposed to represent the frame-panel hybrid type structure efficiently. The impact energy propagation, the transient response and the modal characteristics are investigated with the FE models. This paper was presented at the 4th Asian Conference on Multibody Dynamics(ACMD2008), Jeju, Korea, August 20–23, 2008. Hong-Hee Yoo received a B.S. and M.S. degree in Mechanical Engineering from Seoul National University in 1980 and 1982. He then went on to receive his Ph.D. degree from Michigan State University in 1989. Dr. Yoo is currently a Professor at the School of Mechanical Engineering at Hanyang University in Seoul, Korea. His research interests are in the area of Flexible body dynamics, vibration.     

基于虚拟样机技术的电传动履带车辆特殊运动性能仿真

为了评估电传动履带车辆的性能，采用虚拟样机技术建立了20 t级履带车辆的电机驱动系统模型和车辆动力学模型，构建了机一电联合仿真模型。进行了中心转向、通过崖壁和壕沟等特殊运动的仿真评估，结果表明：车辆性能达到了设计要求，采用联合仿真的方法为电传动履带车辆的性能预测和评估奠定了技术基础。     

油气弹簧叠加阀片设计方法及对节流缝隙影响

利用开阀压力和阀片变形计算公式，建立了油气弹簧单片节流阀片厚度解析设计式。利用叠加阀片等效厚度和应力计算公式，建立了叠加阀片设计方法。对开阀条件进行研究，建立了调整垫片厚度设计公式。利用开阀压力和流量之间关系，建立油气弹簧节流缝隙设计公式。在此基础上，对阀系参数设计影响因素进行了分析。通过实例，对油气弹簧阀系参数进行了设计，对叠加阀片等效厚度、开阀特性和应力强度进行验证，并对油气弹簧进行了特性试验。特性分析和试验结果表明，油气弹簧阀系参数设计应考虑叠加阀片的影响。     

基于边缘与区域特征的无人机图像地平线检测

针对基于视觉的无人机自动定姿中的地平线检测问题,分析了图像中地平线的边缘特征和区域特征,提出了基于单向边缘和灰度分布特征的地平线归属点识别准则和检测方法,利用改进的多模型输出RANSAC估计算法实现了边界点中候选地平线提取,最后利用地平线的识别准则完成了地平线的快速、可靠鲁棒性检测.实验结果证明了该算法的有效性.