A Magnetoelectric Automotive Crankshaft Position Sensor

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 LiNbO3 piezoelectric with a size of 20 mm × 5 mm × 0.5 mm, and plates of the magnetostrictive material Metgla...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2020-09, Vol.20 (19), p.5494
Main Authors: Petrov, Roman, Leontiev, Viktor, Sokolov, Oleg, Bichurin, Mirza, Bozhkov, Slavcho, Milenov, Ivan, Bozhkov, Penko
Format: Article
Language:English
Subjects:
Aluminum
Asymmetric structures
automotive sensor
Composite structures
Controller area network
crankshaft position sensor
Crankshafts
Electric fields
Letter
Lithium niobates
Magnetic fields
magnetoelectric effect
magnetoelectric sensor
magnetoelectric structure
Magnetostriction
Position sensing
Sensors
Single crystals
Weight reduction
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Summary: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 LiNbO3 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.
ISSN:1424-8220
1424-8220
DOI:10.3390/s20195494