广西高速公路呼叫中心系统的设计与探讨

文章基于高速公路呼叫中心系统建设的目的和必要性,介绍了现有高速公路应急处置系统的现状及存在的问题,提出建设高速公路呼叫中心系统,并对系统的建设思路、管理体制、逻辑结构及相应功能进行了阐述。     

基于SLP的船舶切割加工中心布局设计优化

依据生产车间内产品、产量、工艺过程、辅助部门和时间等5个基本要素,采用SLP法对船舶切割加工中心进行布局设计优化。综合考虑物流与非物流因素、综合关系、位置和面积等相关影响,应用虚拟仿真技术对布局设计方案进行对比分析,并验证SLP法布局设计优化方案有利于提升工位生产效率、降低无效时间占比,进而实现精益化生产。     

Study on hot spot stress distribution of three-planar tubular Y-joints subjected to in-plane bending moment

The three-planar tubular Y-joint (3Y-joint) is the main part of the fatigue assessment of tripod substructures of offshore wind turbines (OWTs). As typical multiplanar tubular joints, 3Y-joints are affected a lot by multiplanar interaction between braces. Moreover, the locations of hot spot stress (HSS) can vary considerably under different load types. Thus, the distributions of stress concentration factor (SCF) and multiplanar interaction factor (MIF) along weld toe curves are necessary to calculate HSS. Considering these requirements, this study focuses on the 3Y-joint considering the wide application of the tripod substructure of OWT. A finite element (FE) analysis method is introduced and validated. Then, a numerical database is established covering common ranges of parameters used in practice. The SCF and MIF of 3Y-joint under in-plane bending moment are analyzed. Distribution formulas are proposed and proved suitable for calculating HSS in engineering design.     

船体曲板的双目视觉测量方法

针对船舶制造现场工作环境较为复杂和船体曲板为大尺度板的情况,提出基于结构光辅助扫描的计算机双目视觉测量方法.使用张正友标定法计算摄像机的内部参数和外部参数,在图像中根据颜色空间和形态学处理初步提取激光线,根据基于海森(Hessian)矩阵的Steger算法得到亚像素级的激光中心线,根据极线匹配方法计算激光点坐标并根据二...     

全自动运行信号系统设计的工程优化方案研究

城市轨道交通全自动运行系统(FAO)根据自动化等级分为GoA3有人职守的全自动运行和GoA4无人职守的全自动运行.针对全自动运行系统"中心强化管控、故障快速恢复"的功能需求特点,阐述全自动运行的核心专业——信号系统,从GoA2级向GoA4级过渡中在系统架构和功能上优化设计方案的重要性.以中心直接管控列车为出发点,重点从...