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Yumeng Yang - One of the best experts on this subject based on the ideXlab platform.

  • magnetic angular Position Sensor enabled by spin orbit torque
    Applied Physics Letters, 2018
    Co-Authors: Ziyan Luo, Yumeng Yang
    Abstract:

    We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360° is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other, such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500–2000 Oe, with an average angle error of 0.38°–0.65°.We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360° is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other, such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500–2000 Oe, with an average angle error of 0.38°–0.65°.

  • Magnetic angular Position Sensor enabled by spin-orbit torque
    Applied Physics Letters, 2018
    Co-Authors: Ziyan Luo, Yumeng Yang, Yanjun Xu, Yihong Wu
    Abstract:

    We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360o is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500-2000 Oe, with an average angle error of 0.38-0.65o.

Ziyan Luo - One of the best experts on this subject based on the ideXlab platform.

  • magnetic angular Position Sensor enabled by spin orbit torque
    Applied Physics Letters, 2018
    Co-Authors: Ziyan Luo, Yumeng Yang
    Abstract:

    We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360° is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other, such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500–2000 Oe, with an average angle error of 0.38°–0.65°.We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360° is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other, such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500–2000 Oe, with an average angle error of 0.38°–0.65°.

  • Magnetic angular Position Sensor enabled by spin-orbit torque
    Applied Physics Letters, 2018
    Co-Authors: Ziyan Luo, Yumeng Yang, Yanjun Xu, Yihong Wu
    Abstract:

    We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360o is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500-2000 Oe, with an average angle error of 0.38-0.65o.

Yihong Wu - One of the best experts on this subject based on the ideXlab platform.

  • Magnetic angular Position Sensor enabled by spin-orbit torque
    Applied Physics Letters, 2018
    Co-Authors: Ziyan Luo, Yumeng Yang, Yanjun Xu, Yihong Wu
    Abstract:

    We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360o is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500-2000 Oe, with an average angle error of 0.38-0.65o.

Fabio Giulii Capponi - One of the best experts on this subject based on the ideXlab platform.

  • On the Effects of Position Sensor Resolution in Variable Speed Drives
    2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018
    Co-Authors: Giacomo Scelba, Giulio De Donato, Giuseppe Scarcella, Fabio Giulii Capponi
    Abstract:

    The aim of this paper is to further the knowledge on the inherent limitations imposed on variable speed drives by the resolution of the rotor Position Sensor. Starting from the well-known spatial harmonic formulation of quantized rotor Position measurement, time harmonic formulations of both quantized Position and speed are derived, which are valid under generic periodic torque disturbances. These formulations, based on modulation theory, justify the presence of otherwise unexplained additional rotor speed harmonics that are induced by the drive when subjected to torque disturbances. Simulations are provided to verify the correctness of the proposed mathematical representations.

Yanjun Xu - One of the best experts on this subject based on the ideXlab platform.

  • Magnetic angular Position Sensor enabled by spin-orbit torque
    Applied Physics Letters, 2018
    Co-Authors: Ziyan Luo, Yumeng Yang, Yanjun Xu, Yihong Wu
    Abstract:

    We propose a simple scheme for magnetic angular Position Sensor based on current-induced spin-orbit torque effect. A full range detection of 360o is realized with a pair of Hall crosses made of heavy metal/ferromagnet heterostructures. The current axes of the two Hall crosses are aligned orthogonal to each other such that when both devices are subject to a rotational in-plane magnetic field, the differential Hall voltage due to current pulses of opposite polarity exhibits a sine and cosine angular dependence on the field direction, respectively. The field rotational angle is then calculated from the sine and cosine output signals via the arctan2 function. A linear correspondence between the calculated and actual field angle is obtained in the field range of 500-2000 Oe, with an average angle error of 0.38-0.65o.