An adaptive control method to suppress the maglev track-induced self-excited vibration

• Published in: 2011 International Conference on Consumer Electronics, Communications and Networks pp. 4723 - 4727
• Main Authors: Danfeng Zhou, Jie Li, Kun Zhang
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.04.2011
• Subjects: adaptive; Electromagnets; Equations; Frequency control; Frequency estimation; Least squares approximation; LMS; maglev; Medical services; self-excited; vibration; Vibrations
• ISBN: 1612844588; 9781612844589
• DOI: 10.1109/CECNET.2011.5768485

Track induced self-excited vibration is a special problem in the EMS (electromagnetic suspension) maglev systems. In this paper, a coupled model of the steel track and the magnetic levitation system is developed, and the principle underlying the self-excited vibration is explored using the Nyquist stability criterion. To eliminate the self-excited vibration, an improved LMS cancellation algorithm with phase compensation (C-LMS algorithm) is presented. To achieve adaptive cancellation, a frequency estimator is employed to estimate the frequency of the vibration and to provide the C-LMS algorithm with a reference signal. Theoretical analysis and numerical simulation show that the proposed adaptive LMS algorithm can effectively eliminate the self-excited vibration.