基于时间分解的无钥匙进入系统响应优化方法

<正>采用RFID技术的无钥匙进入PKE系统,不需要取出智能钥匙即可完成控制车门解锁或上锁,给用户带来了全新的舒适性体验。本文深入分析了无钥匙进入的经典方案,在对系统响应时间分解并深入分析后,提出了一种优化方案,可以降低对锁执行器的要求,从而降低了系统成本;延长了传感器控制模块扫描周期,因而降低了系统静态电流,对整车的静态功耗做出了贡献。     

全站仪测量船体分段表面精度方法研究

由于对精度控制大多只关注船体分段的主尺度精度,而忽视了船体分段的外表面精度。基于此,研究提出了一种采用全站仪对边测量法,以基准点为导向进行垂直扫描船体外表面的简易方法,并采用软件生成三维模型与设计模型对比,据此检验建造的船体分段外形的精度。     

基于总线及 BS T的弹载计算机可测试性设计

为了提高弹载计算机的可测试性,采用MTM测试总线及BST技术对其PCB板进行重新设计,经重新设计后的弹载计算机系统具有良好的可测试性,可以及时、快速、准确地检测与隔离故障,缩短故障检测与隔离时间,进而减少维修时间,降低系统维护成本,提高可靠性。     

海外扫描

2013可持续城市交通规划奖颁布 欧盟委员会在比利时布鲁塞尔举行了2013年可持续城市交通规划奖颁奖礼,西班牙里瓦斯一瓦西亚马德里德荣获2013年可持续城市交通规划奖,斯洛文尼亚首都卢布尔雅那则获得了欧洲交通周奖。     

Fabrication and Interfacial Structure of Ni-YSZ-LSM Porous Scaffold for Solid Oxide Fuel Cells

A novel process route using tape casting and stacking for fabricating porous scaffold of solid oxide fuel cells (SOFC) was demonstrated. The linear shrinkages of anode (Ni-YSZ, YSZ stands for 3% Y_2O_3(mole fraction) stabilized ZrO_2) and cathode (LSM-YSZ, LSM stands for La_(0.8)Sr_(0.2)Mn0_3) were optimized to be uniform with that of electrolyte during sintering, by controlling the content of pore former. The micromorphology and interface microstructure of the cross-section of the porous scaffold were observed by optical microscope and scanning electron microscope, respectively. The element distribution and phase composition were analyzed by energy dispersive spectrometer and X-ray diffraction, respectively. The results showed that the porous scaffold with regular pore shape and high specific surface area was obtained after sintering at 1 350℃. The fabricated porous scaffold had defect free interfacial structures due to the uniform shrinkage of anode, cathode and electrolyte layers. In addition, it was shown that diffusions of Zr, Ni and La caused a progressive boundary between YSZ, Ni-YSZ and LSM-YSZ layers. The interface between anode and electrolyte (Ni-YSZ/YSZ) was mainly composed of Ni, YSZ and a small amount of NiO, and the interface between cathode and electrolyte (LSM-YSZ/YSZ) was mainly composed of YSZ, LSM and a small amount of La_2Zr_2O_7.     

Surface reconstruction of scanned human body using radial basis functions and adaptive partition of unity

It is important to reconstruct a continuous surface representation of the point cloud scanned from a human body. In this paper a new implicit surface method is proposed to reconstruct the human body surface from the points based on the combination of radial basis functions (RBFs) and adaptive partition of unity (PoU). The whole 3D domain of the scanned human body is firstly subdivided into a set of overlapping subdomains based on the improved octrees. The smooth local surfaces are then computed in the subdomains based on RBFs. And finally the global human body surface is reconstructed by blending the local surfaces with the adaptive PoU functions. This method is robust for the surface reconstruction of the scanned human body even with large or non-uniform point cloud which has a sharp density variation. Foundation item: the National Natural Science Foundation of China (No. 50575139) and the Shanghai Special Fund of Informatization (No. 088)     

FDM工艺中基于特征分区的扫描路径算法及优化

简述了FDM工艺的工作原理,在现有扫描方式的基础上提出了基于特征分区的扫描路径算法,并对该算法进行了优化,大大减少了扫描过程中的断送次数,提高了成型效率．     

预防酒后驾车新技术扫描

酒精锁 在不少国家,政府正在推行用酒精锁来防止醉酒驾驶员驾车上路。美国新墨西哥州等4个州已立法,要求酒后驾车初犯者使用酒精锁,其使用费用通常由酒后驾车者支付,包括100美元的安装费和每月约80美元的定期检测费。在瑞典,已经有1500辆沃尔沃载货车安装了酒精锁装置,正式名称为“酒精气敏点火自锁装置”。     

舰载雷达平台在风浪中的运动姿态对雷达天线扫描位置的影响研究

针对舰载雷达平台在风浪中的运动,从海浪的功率谱研究入手,分别建立舰船受风浪作用而产生的横摇、纵摇和升沉的数学模型.在此基础上,给出了雷达天线各扫描时刻所产生的位置指向误差,并进行了仿真模拟.实验结果表明,该方法不仅有助于舰载雷达系统的性能分析,而且也有助于雷达对抗战场环境的内场注入式仿真研究.     

影响SLS技术发展的因素及改进措施

本文简述了 SLS技术的特点、发展要求 ,通过分析影响 SLS技术发展的主要因素 ,阐述了相应的改进措施 ,并指出了 SLS技术的发展方向。