基于LabVIEW的船舶舱室甲板虚拟振动测量系统设计

Design of Virtual Instrumental System to the Measure Vibration of Ship Deck Structures by LabVIEW

针对船舶舱室甲板的结构振动特点,结合有关船舶舱室的甲板结构振动标准文件,运用于虚拟仪器环境软件LabVIEW系统,开发针对船舶舱室的甲板结构振动虚拟测量分析及评价系统。通过对实船舱室甲板的振动测试,对比分析该系统结果与传统模拟振动测试分析仪VA-10的测试结果,认为该虚拟测试系统具有较好的可靠性和较高的精度,能较好满足工程测试的需要。在此系统基础上可以扩展进行船舶结构的运行模态分析功能的搭建,成为航行振动评价及有害振动诊断的工具。

This paper develops a virtual analysis and evaluation system for the vibration of ship deck structures by using the virtual instrumental software of LabVIEW,considering the vibration characteristics of such structures and implementing the related ISO standards and codes. Through the deck vibration test onboard, the results are compared to those obtained from conventional vibration measurement instrument VA-IO. The comparisons show that developed system is reliable and higher in accuracy, and can be used for engineering measurement. This system may be expanded to a module for mode analysis of ship structures and becomes a tool to evaluate and diagnosis the vibration during navigation.