摘要
轴承滚子表面质量直接影响轴承的精度、性能以及使用寿命。为了实现滚子的高速、高精数字化无损检测,提出一种基于隧道磁阻(TMR)传感的滚子裂纹漏磁检测方法。利用有限元仿真分析了最佳的磁化电流以及不同裂纹深度对应的漏磁场大小。为了解决高灵敏度TMR传感器在强背景磁场下的量程不足、信号失真、磁噪声增大等问题,设计了基于偏置磁场调节的TMR阵列差分探头,实验验证了该探头检测微细裂纹漏磁场的有效性。
The surface quality of the bearing roller directly affects the accuracy,performance and service life of the bearing.In order to realize the high⁃speed and high⁃precision digital non⁃destructive testing of rollers,a method of magnetic flux leakage de⁃tection for roller cracks based on tunnel magnetoresistance(TMR)sensing was proposed.Finite element simulation analyzed the optimal magnetizing current and the magnitude of the leakage magnetic field corresponding to different crack depths.In order to solve the problems of insufficient range,signal distortion,and increased magnetic noise of high⁃sensitivity TMR sensors under strong background magnetic fields,a TMR array differential probe based on bias magnetic field adjustment was designed,and the experiment verifies the effectiveness of the probe to detect the magnetic field leakage of micro⁃cracks.
作者
刘伯承
唐健
王荣彪
叶文超
康宜华
LIU Bo-cheng;TANG Jian;WANG Rong-biao;YE Wen-chao;KANG Yi-hua(Huazhong University of Science and Technology,National Engineering Research Center for Digital Manufacturing Equipment,Wuhan 430074,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2021年第12期111-114,118,共5页
Instrument Technique and Sensor
基金
2018年国家重点研发计划新能源汽车重点专项项目(2018YFB0106000)。
关键词
轴承
滚子
微细裂纹
周向磁化
漏磁检测
磁场偏置
TMR
bearing
roller
micro⁃crack
circumferential magnetization
magnetic flux leakage testing
magnetic bias
TMR
