A novel AMR based angle sensor with reduced harmonic errors for automotive applications

Borole, UP and Sreevidya, PV and kadam, R and Khan, J and Barshilia, Harish C and Chowdhury, P (2021) A novel AMR based angle sensor with reduced harmonic errors for automotive applications. Sensors and Actuators A : Physical, 324. ISSN 09244247

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Official URL: https://www.sciencedirect.com/science/article/abs/...


The paper presents the development of a novel anisotropic magnetoresistive sensor for measurement of angle in the interval 0° to 180°. A sensor is comprised of two Wheatstone bridges arranged at 45° to each other. A unique design is proposed wherein each resistive element of the Wheatstone bridge was formed with strips of varying widths. It results in a substantial reduction in harmonics errors due to the dispersion of the shape anisotropy field values within each element. The reduced harmonic errors also lead to a drastic reduction of hysteresis error (60%) and offer better accuracy with a signal amplitude of 18 mV/V even in weak fields of ≤80 G. Further, the sensor was employed in the development of a pedal position sensor. The preliminary results of the development are presented, indicating the usability for industrial and automotive applications.

Item Type: Article
Uncontrolled Keywords: AMR, Angle sensor, Harmonics,Anisotropic field, Pedal sensor Automotive
Subjects: RENEWABLE ENERGY > Thermal Energy
PHYSICS > Physics(General)
PHYSICS > Solid-State Physics
Depositing User: Mrs SK Pratibha
Date Deposited: 24 Aug 2022 16:40
Last Modified: 24 Aug 2022 16:40
URI: http://nal-ir.nal.res.in/id/eprint/13627

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