Jiang Xueling, Li Linfeng, Lu Caijiang, Zhu Renren, Hua Qiang, Dong Longfei, Fu Guoqiang
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China.
Rev Sci Instrum. 2021 Sep 1;92(9):095009. doi: 10.1063/5.0062662.
This paper proposes a rotational speed sensor based on the magnetoelectric coupling effect. The sensor is composed of a permanent magnet array and a magnetoelectric composite FeSiB/Pb(Zr,Ti)O. The permanent magnet array rotates with the gear to provide a stable sinusoidal alternating magnetic field in its surrounding space, which is simulated and analyzed by using the finite element simulation software. Based on the magnetoelectric coupling effect, the composite FeSiB/Pb(Zr,Ti)O senses the magnetic field information and transforms it into electrical information so as to realize the rotating speed measurement. The experiments of sensing distance and linearity are carried out. The proposed sensor is compared and verified by a coil sensor. The results show that the proposed speed sensor has good linearity in the speed measured range, and the sensing distance can reach 15 mm. At the same time, it can be used for low-speed measurement. This kind of speed sensor has broad application prospects in the field of rotational speed measurement.
本文提出了一种基于磁电耦合效应的转速传感器。该传感器由永磁体阵列和磁电复合材料FeSiB/Pb(Zr,Ti)O组成。永磁体阵列随齿轮一起旋转，在其周围空间提供稳定的正弦交变磁场，利用有限元模拟软件对其进行了模拟和分析。基于磁电耦合效应，复合材料FeSiB/Pb(Zr,Ti)O感知磁场信息并将其转换为电信息，从而实现转速测量。进行了传感距离和线性度实验。将所提出的传感器与线圈传感器进行了比较和验证。结果表明，所提出的转速传感器在测量速度范围内具有良好的线性度，传感距离可达15毫米。同时，它可用于低速测量。这种转速传感器在转速测量领域具有广阔的应用前景。
