Research on the influence of velocity on the sensitivity of inductive sensor

In an inductive sensor,relative movement occurs between a fixed coil and a metal target or another coil,and inductive sensors are often used to measure moving,rotating and reciprocating targets. however,the effect of this relative movement on the detection capabilities of inductive sensors has not previously been investigated. therefore,the influence of velocity on the sensitivity of inductive sensors for metal particle detection should be addressed to improve the performance of inductive sensors in terms of their sensitivity for metal particle detection and in other aspects of their operation. this paper presents a theoretical analysis and experimental validation of the dependence of the sensitivity of an inductive sensor on the velocity of the particles it is measuring. the results indicate that the sensitivity to particles can be significantly improved by decreasing their velocity. when the velocity of the particles is decreased from 2.9×10-2 m/s to 5.8×10-3 m/s,the inductance variation of the coil increases from 0.43 nh to 0.81 nh,corresponding to a sensitivity enhancement of 87.5%.