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Energies 2017, 10(8), 1132; doi:10.3390/en10081132

Design of a Control System for a Maglev Planar Motor Based on Two-Dimension Linear Interpolation

School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
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Received: 6 June 2017 / Revised: 23 July 2017 / Accepted: 27 July 2017 / Published: 2 August 2017
(This article belongs to the Section Energy Fundamentals and Conversion)
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Abstract

In order to realize the high speed and high-precision control of a maglev planar motor, a high-precision electromagnetic model is needed in the first place, which can also contribute to meeting the real-time running requirements. Traditionally, the electromagnetic model is based on analytical calculations. However, this neglects the model simplification and the manufacturing errors, which may bring certain errors to the model. Aiming to handle this inaccuracy, this paper proposes a novel design method for a maglev planar motor control system based on two-dimensional linear interpolation. First, the magnetic field is divided into several regions according to the symmetry of the Halbach magnetic array, and the uniform grid method is adopted to partition one of these regions. Second, targeting this region, it is possible to sample the electromagnetic forces and torques on each node of the grid and obtain the complete electromagnetic model in this region through the two-dimensional linear interpolation method. Third, the whole electromagnetic model of the maglev planar motor can be derived according to the symmetry of the magnetic field. Finally, the decoupling method and controller are designed according to this electromagnetic model, and thereafter, the control model can be established. The designed control system is demonstrated through simulations and experiments to feature better accuracy and meet the requirements of real-time control. View Full-Text
Keywords: high speed and high precision; maglev planar motor; electromagnetic model; two-dimension linear interpolation high speed and high precision; maglev planar motor; electromagnetic model; two-dimension linear interpolation
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Xing, F.; Kou, B.; Zhang, L.; Yin, X.; Zhou, Y. Design of a Control System for a Maglev Planar Motor Based on Two-Dimension Linear Interpolation. Energies 2017, 10, 1132.

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