摘要
针对现有检测装置与方法普遍存在形变适应性欠佳、检测精度不足等突出问题,融合形变自适应机构与串并混联测量机构,设计了一款新型核燃料棒变形检测装置,旨在利用形变自适应机构四自由度被动调整解决装置与变形燃料棒紧密贴合问题,通过构建串联检测、并联校正闭环测量回路,实现误差动态补偿.在此基础上引入基于类挠度变换的微量铰接间隙补偿机制,提出一种用于抑制机械间隙干扰的测量误差协同补偿方法.样机测量试验结果表明装置可自适应贴合各向随机变形核燃料棒,配合提出的补偿方法能够实现核燃料棒高精度变形检测.
Limited by the difficulties of detection mechanism and error compensation,the existing detection devices and methods generally have some problems such as poor deformation adaptability and detection accuracy.Therefore,a new nuclear fuel rod deformation detection device was designed by fusing the deformation adaptive mechanism and the serial-parallel hybrid measurement mechanism.It aims to solve the problem of tight fit between the device and the deformed fuel rod by using the 4-DOF passive adjustment of the deformation adaptive mechanism,and to realize the dynamic error compensation by constructing the closed loop of serial measurement and parallel correction.On this basis,a micro articulated clearance compensation mechanism based on similar deflection transformation was introduced,and a measurement error cooperative compensation method for suppressing mechanical clearance interference was proposed.The experimental results show that the device can adaptively fit the randomly deformed nuclear fuel rods in all directions,which can realize the high precision deformation detection of the nuclear fuel rods with the proposed compensation method.
作者
王经天
张明路
李满宏
王哲
WANG Jingtian;ZHANG Minglu;LI Manhong;WANG Zhe(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China)
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第12期66-71,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家重点研发计划资助项目(2017YFB1302504)。
关键词
核燃料棒
变形检测
误差补偿
机械间隙
混联机构
nuclear fuel rod
deformation detection
error compensation
mechanical clearance
hybrid mechanism
