期刊论文详细信息
Sensors
Magnetic Properties of Ferromagnetic Particles under Alternating Magnetic Fields: Focus on Particle Detection Sensor Applications
Ran Jia1  Kai Wang1  Xin Ba1  Qiu Du1  Changsong Zheng1  Biao Ma1  Liyong Wang2 
[1] School of Mechanical Engineering, Beijing Institute of Technology, No. 5 South Zhongguancun Street HaiDian District, Beijing 100081, China;The Ministry of Education Key Laboratory of Modern Measurement and Control Technology, Beijing Information Science and Technology University, No. 12 Xiaoying East Street, HaiDian District, Beijing 100192, China;
关键词: magnetic properties;    wear particle;    sensors;   
DOI  :  10.3390/s18124144
来源: DOAJ
【 摘 要 】

The electromagnetic wear particles detection sensor has been widely studied due to its ability to monitor the wear status of equipment in real time. To precisely estimate the change of the magnetic energy of the sensor coil caused by the wear particles, the magnetic property models of wear particles under the alternating magnetic field was established. The models consider the hysteresis effect and the eddy current effect of the wear particles. The analysis and experimental results show that with the increase of the effective field frequency, the change of the magnetic energy caused by the wear particles gradually decrease, which makes the induced electromotive force output by the sensor reduce with the decrease of the particle speed, so a signal compensation method is presented to obtain a unified signal when the same wear particle passing through the sensor in different speeds. The magnetic coupling effect between the two adjacent wear particles is analyzed. The result illustrates that the change of the magnetic energy caused by the dual wear particles system is larger than the sum of the energy variation caused by two independent wear particles, and with the increase of the interparticle distance, the magnetic coupling effect gradually weakens and disappears.

【 授权许可】

Unknown   

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