凸度检测系统中X光机参数对厚度测量精度的影响  

Effects of X-ray Tube Parameters on Thickness Measure Precision in X-ray Profile Gauge

作　　者：苗积臣[1] 吴志芳[1] 邢桂来[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2011年第9期1112-1115,共4页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(10875068);北京市科技计划资助项目(Z080903027508)

摘　　要：X射线凸度检测技术可在线获得板带材的断面轮廓并反馈到连轧系统实现实时凸度控制,在冶金工业中得到广泛应用,是冶金自动化中的关键技术。该项技术存在厚度测量范围大、测量精度要求高的特点。本文通过理论分析厚度测量精度与X光机管电压和管电流的关系,得到X光机管电流是决定系统极限测量精度的主要因素,X光机管电压是决定系统测量厚度范围的主要因素。在此基础上给出了由测量精度确定管电流的方法和由测量范围确定管电压的方法,为系统X光机的选型和测量档位设定提供指导依据。Instantaneous profile gauge technology has been widely used in metallurgy industry because it can on-line get the profile of steel strip.It has characters of high measure precision and wide measure range,but the X-ray tube parameters only can be set few different values during measurement.The relations of thickness measure precision and X-ray tube current,X-ray tube voltage were analyzed.The results show that the X-ray tube current affects the thickness measure precision and the X-ray tube voltage determines the thickness measure range.The method of estimating the X-ray current by thickness measure precision was provided in the end.This method is the base of X-ray source selection and X-ray source parameters＇ setting in the instantaneous profile gauge.

关 键 词：X射线凸度检测 管电流估算 管电压估算 X射线厚度测量 

分 类 号：TL99[核科学技术—核技术及应用]