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A Magnetoelectric Automotive Crankshaft Position Sensor
Roman Petrov1, Viktor Leontiev1, Oleg Sokolov1
1Institute of Electronic and Information Systems, Novgorod State University, 173003 Veliky Novgorod, Russia.
Sensors (Basel, Switzerland)
|September 30, 2020
Summary
Magnetoelectric materials show promise for automotive crankshaft position sensors. These composite sensors, utilizing piezoelectric and magnetostrictive elements, offer efficient and reliable performance for vehicle systems.
Area of Science:
- Materials Science
- Electrical Engineering
- Automotive Engineering
Background:
- Investigates the application of magnetoelectric (ME) materials in automotive sensors.
- Focuses on composite structures combining piezoelectric (PZT, LiNbO3) and magnetostrictive (Metglas) materials.
- Explores both layered and asymmetric composite designs, including those with copper and aluminum interlayers.
Discussion:
- Compares the performance of various ME composite structures in resonant and non-resonant modes.
- Details the operational principles of the proposed position sensor.
- Examines the integration feasibility of these sensors into automotive systems via the CAN bus.
Key Insights:
- Achieved a high magnetoelectric resonant voltage coefficient of 784 V/(cm·Oe).
- Recorded a low-frequency non-resonant ME coefficient of approximately 3 V/(cm·Oe).
- Demonstrated the viability of ME sensors for precise position detection.
Outlook:
- Highlights the significant potential of ME sensors for automotive applications, specifically for crankshaft position sensing.
- Suggests further development and integration into existing vehicle electronic architectures.
- Indicates a pathway for enhanced sensor technology in the automotive industry.
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