文献类型：期刊文献

英文题名：Improving Sensitivity of a Micro Inductive Sensor for Wear Debris Detection with Magnetic Powder Surrounded

作者：Liu, Liankun[1];Chen, Liang[1];Wang, Saijie[2];Yin, Yi[1];Liu, Dazhuang[1];Wu, Sen[1];Liu, Zhijian[1];Pan, Xinxiang[1,3]

机构：[1]Dalian Maritime Univ, Coll Marine Engn, Dalian 116026, Peoples R China;[2]Dalian Maritime Univ, Sch Sci, Dalian 116026, Peoples R China;[3]Guangdong Ocean Univ, Coll Elect & Informat Engn, Zhanjiang 524088, Peoples R China

年份：2019

卷号：10

期号：7

外文期刊名：MICROMACHINES

收录：SCI-EXPANDED(收录号：WOS:000478588500062)、、EI(收录号：20193007232909)、Scopus(收录号：2-s2.0-85069437279)、WOS

基金：This work was supported by National Key Research and Development Program of China (2017YFC1404603), the Fundamental Research Funds for the Central Universities (3132019189, 3132016325, 3132016337) and National Natural Science Foundation of China (51479020).

语种：英文

外文关键词：micro inductive sensor; sensitivity; magnetic powder; wear debris; improvement

外文摘要：The inductive detection of wear debris in lubrication oil is an effective method to monitor the machine status. As the wear debris is usually micro scale, a micro inductive sensor is always used to detect them in research papers or high-tech products. However, the improvement of detection sensitivity for micro inductive sensors is still a great challenge, especially for early wear debris of 20 mu m or smaller diameter. This paper proposes a novel method to improve the detection sensitivity of a micro inductive sensor. Regarding the magnetic powder surrounding the sensor, the magnetic field in the core of the sensor where the wear debris pass through would be enhanced due to the increased relative permeability. Thus, the inductive signal would be improved and the detection sensitivity would be increased. It is found that the inductive signal would linearly increase with increasing the concentration of the magnetic powder and this enhancement would also be effective for wear debris of different sizes. In addition, the detection limit of the micro inductive sensor used in our experiment could be extended to 11 mu m wear debris by the proposed method.