A Permanent Magnet Ferromagnetic Wear Debris Sensor Based on Axisymmetric High-Gradient Magnetic Field

Bin Fan; Yong Liu; Peng Zhang; Lianfu Wang; Chao Zhang; Jianguo Wang

doi:10.3390/s22218282

A Permanent Magnet Ferromagnetic Wear Debris Sensor Based on Axisymmetric High-Gradient Magnetic Field

Sensors (Basel). 2022 Oct 28;22(21):8282. doi: 10.3390/s22218282.

Authors

Bin Fan^{1

2}, Yong Liu², Peng Zhang², Lianfu Wang¹, Chao Zhang³, Jianguo Wang³

Affiliations

¹ College of Mechanical & Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China.
² State Key Laboratory of Smart Manufacturing for Special Vehicles and Transmission System, Baotou 014030, China.
³ Inner Mongolia Key Laboratory of Intelligent Diagnosis and Control of Mechatronic Systems, Inner Mongolia University of Science & Technology, Baotou 014010, China.

Abstract

The detection of wear debris in lubricating oil is effective for determining current equipment operating conditions for fault diagnosis. In this paper, a permanent magnet ferromagnetic wear debris sensor is proposed that is composed of a compact structure and a detection coil that generates an induced voltage when wear debris passes through a magnetic field. A three-dimensional model of the sensor is established, the internal axisymmetric high-gradient magnetic field of the sensor is analyzed, and a mathematical model of the sensor signal is proposed. The effects of the air gap structure of the sensor and the relative permeability, velocity, and volume of the wear debris on the sensor performance are analyzed. The correctness of the theoretical results is proven by single particle experiments, and the sensor is calibrated to achieve quantitative analysis of the wear debris.

Keywords: fault diagnosis; finite element; permanent magnet; wear debris sensor.

Grants and funding

This work was supported in part by the National Natural Science Foundation of China under Grant (51965054, 51865045), the Inner Mongolia Natural Science Foundation (No. 2021MS05041), the Inner Mongolia Autonomous Region Military-Civilian Integration Key Scientific Research Projects and Soft Scientific Research Projects (JMZD202202), and in part by the State Key Laboratory of Smart Manufacturing for Special Vehicles and Transmission System under Grant GZ2022KF004.