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2D rotary sensor based on magnetic composite of microrods

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Abstract

This study presents a two-dimensional rotary sensor employing the impact of an externally exposed magnetic field on the inductance of coils with cores composed of suspended magnetic microrods. A mixture of polydimethylsiloxane and nickel microparticles in the average size of about 8–20 µm was utilized as the inductor coil. Interestingly, the variations in the coils’ inductance were effectively used to sense the rotations in both azimuth and elevation. A readout circuit was designed to convert the coils’ inductance to voltage and demonstrated a conversion coefficient of 8.6 mV/° in azimuth and 19.1 mV/° in elevation. Due to the inexpensive utilized material and relatively simple fabrication process, the proposed rotary sensor can be a great candidate for this application.

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Authors and Affiliations

  1. School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran

    Amir Hossein Karami & Mohammadreza Kolahdouz

  2. Electrical and Computer Engineering Department, Shahid Beheshti University, Tehran, Iran

    Fatemeh Karami Horestani

  3. Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

    Ali K. Horestani

  4. GEMMA/CIMITEC, Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain

    Ferran Martín

Authors
  1. Amir Hossein Karami
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  2. Fatemeh Karami Horestani
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  3. Mohammadreza Kolahdouz
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  4. Ali K. Horestani
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  5. Ferran Martín
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Correspondence to Mohammadreza Kolahdouz.

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Karami, A.H., Karami Horestani, F., Kolahdouz, M. et al. 2D rotary sensor based on magnetic composite of microrods. J Mater Sci: Mater Electron 31, 167–174 (2020). https://doi.org/10.1007/s10854-019-02652-8

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  • DOI: https://doi.org/10.1007/s10854-019-02652-8

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