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Appl. Sci. 2016, 6(12), 419;

Improved ADRC for a Maglev Planar Motor with a Concentric Winding Structure

School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Faculty of Technology, Policy and Management(TPM), Delft University of Technology, Delft 2628 BX, The Netherlands
Author to whom correspondence should be addressed.
Academic Editor: Wen-Hsiang Hsieh
Received: 9 October 2016 / Revised: 26 November 2016 / Accepted: 6 December 2016 / Published: 10 December 2016
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In the semiconductor industry, positioning accuracy and acceleration are critical parameters. To improve the acceleration speed of a motor, this paper proposes the moving-coil maglev planar motor with a concentric winding structure. The coordinate system has been built for the multiple degrees of freedom movement system. The Lorenz force method has been applied to solve its electromagnetic model. The real-time solving of the generalized inverse matrix of factors can realize the decoupling of the winding current. When the maglev height changes, the electromagnetic force and torque decreases exponentially with the increase of the air gap. To decrease the influence on control system performance by the internal model change and the external disturbance, this paper proposes an improved active disturbance rejection control (ADRC) to design the controller. This new controller overcomes the jitter phenomenon due to the turning point for the traditional ADRC, thus it is more suitable for the maglev control system. The comparison between ADRC and the improved ADRC has been conducted, the result of which shows the improved ADRC has greater robustness. View Full-Text
Keywords: improved ADRC; maglev planar motor; concentric winding; robustness improved ADRC; maglev planar motor; concentric winding; robustness

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Kou, B.; Xing, F.; Zhang, C.; Zhang, L.; Zhou, Y.; Wang, T. Improved ADRC for a Maglev Planar Motor with a Concentric Winding Structure. Appl. Sci. 2016, 6, 419.

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