Research on the influence of inductive wear particle sensor coils on debris detection

The debris detection characteristics of the inductive wear monitoring are researched by the method of combining theoretical research and simulation analysis in this paper. The mathematical model of the change in inductance is established based on the change in the coil magnetic field by the abrasive particles. By the COMSOL simulation software, the physical model of the three-coil wear monitoring is established, and the influence of the coil structure parameters on the output induced electromotance is compared and analyzed, resulting in the optimization of the coil parameters. For metal particles with different properties and sizes, the changes in the induced electromotance during the process of passing through the coil are analyzed, obtaining the mapping relationship between each particle size and the output induced electromotance. The simulation results show that the output voltage corresponding to the particles is related to the coil structure parameters, and the larger the particle size, the larger the output voltage. Finally, through experiments, the designed sensor coil structure has been proved to have a better detection effect on metal particles, realizing the detection of ferromagnetic abrasive particles above 100 mu m and non-ferromagnetic abrasive particles above 200 mu m. (c) 2022 Author(s).

Automated summary

The paper researches the debris detection characteristics of inductive wear monitoring through a combination of theoretical research and simulation analysis. It establishes a mathematical model based on the change in coil magnetic field by abrasive particles and optimizes coil parameters through comparison and analysis of coil structure parameters. Experimental results validate the effectiveness of the designed sensor coil structure in detecting metal particles.