Petrov Roman, Leontiev Viktor, Sokolov Oleg, Bichurin Mirza, Bozhkov Slavcho, Milenov Ivan, Bozhkov Penko
Institute of Electronic and Information Systems, Novgorod State University, 173003 Veliky Novgorod, Russia.
Faculty of Machinery and Construction Technologies in Transport, Todor Kableshkov University of Transport, 1113 Sofia, Bulgaria.
Sensors (Basel). 2020 Sep 25;20(19):5494. doi: 10.3390/s20195494.
The paper is devoted to the possibility of using magnetoelectric materials for the production of a crankshaft position sensor for automobiles. The composite structure, consisting of a PZT or LiNbO piezoelectric with a size of 20 mm × 5 mm × 0.5 mm, and plates of the magnetostrictive material Metglas of the appropriate size were used as a sensitive element. The layered structure was made from a bidomain lithium niobate monocrystal with a Y + 128° cut and amorphous metal of Metglas. Various combinations of composite structures are also investigated; for example, asymmetric structures using a layer of copper and aluminum. The output characteristics of these structures are compared in the resonant and non-resonant modes. It is shown that the value of the magnetoelectric resonant voltage coefficient was 784 V/(cm·Oe), and the low-frequency non-resonant magnetoelectric coefficient for the magnetoelectric element was about 3 V/(cm·Oe). The principle of operation of the position sensor and the possibility of integration into automotive systems, using the CAN bus, are examined in detail. To obtain reliable experimental results, a special stand was assembled on the basis of the SKAD-1 installation. The studies showed good results and a high prospect for the use of magnetoelectric sensors as position sensors and, in particular, of a vehicle's crankshaft position sensor.
本文致力于探讨使用磁电材料制造汽车曲轴位置传感器的可能性。采用了一种复合结构作为敏感元件，该结构由尺寸为20 mm×5 mm×0.5 mm的PZT或LiNbO压电材料以及适当尺寸的磁致伸缩材料Metglas板组成。层状结构由具有Y + 128°切割的双畴铌酸锂单晶和Metglas非晶金属制成。还研究了复合结构的各种组合；例如，使用铜层和铝层的不对称结构。在谐振和非谐振模式下比较了这些结构的输出特性。结果表明，磁电谐振电压系数的值为784 V/(cm·Oe)，磁电元件的低频非谐振磁电系数约为3 V/(cm·Oe)。详细研究了位置传感器的工作原理以及使用CAN总线集成到汽车系统中的可能性。为了获得可靠的实验结果，在SKAD - 1装置的基础上组装了一个特殊的试验台。研究结果表明，磁电传感器作为位置传感器，特别是作为车辆曲轴位置传感器使用具有良好的效果和很高的前景。
