基于外差探测的双金属片结构FBG温度传感系统

提出了一种基于外差探测的双金属片结构光纤布拉格光栅(FBG)温度传感系统方案.将两个相同的FBG粘贴在膨胀系数不同的两个金属片上,利用两个金属片膨胀系数的不同,使两个FBG产生不同的中心波长的漂移,通过一个光电二极管探测其光强,再利用外差技术解调出温度的变化.与传统的双光纤布拉格光栅的系统不同的是,该系统中的参考FBG也能感测温度的变化,通过两个FBG反射波产生不同的相位差来获得温度的变化.数值仿真和理论分析表明该系统解决了传统M-Z干涉仪在测量温度时,应变与温度交叉敏感的问题.但是由于该系统的探测精度高,会导致量程范围的降低.因此该系统适用于温度变化不大,但精度要求比较高的情况.

Abstract：

Proposed is a double-sheet-metal structure FBG temperature sensor system based on heterodyne detection. Two same FBGs are affixed on two sheet metals with different coefficient of linear thermal expansion, because of which the changes of the two FBG's reflected wavelength are different, the two reflected signals are detected by a photoelectric detector, and the change of temperature can he obtained by detecting phase difference between the two reflected signals, which is different from that of traditional double FBG system. The two sheet metals make the two FBG in the same surrounding, and the two FBGs are affected by the same phase noises, which will not introduce phase difference between the two FBGs. Numerical simulation and analysis show that this system can solve the cross-sensitivity problem, but the high detection accuracy results in a narrow detection range. So the system applies to the situations which need high detection accuracy but narrow detection range.     

FANUC数控机床自动上下料系统开发∗

在现有数控车床上实施技改,通过加装KUKA机器人及电气控制系统,机械手可自动完成上下料任务,大幅缩短生产周期,减小劳动强度,初步实现数控机床的智能化生产.     

智能制造背景下工业机器人CNC机床上下料工作站设计

在智能制造的背景下，数控车床上下料工作站作为关键设备，具有自动上下料、物料供应控制、工件定位与夹持、工件质检等功能需求。本文提出了一种基于人机交互和自动化控制的智能工作站方案。通过引入自动化控制系统以及设计直观友好的人机交互界面，实现了数控车床工作站上下料的自动化操作。实验结果表明，该方案提高了生产效率、降低了操作成本，展现了显著的优势。