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A novel compensating approach for self-sensing Maglev system with controlled-PM electromagnets

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2 Author(s)
Yeou-Kuang Tzeng ; Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; T. C. Wang

This paper describes a novel compensating approach for a self-sensing (gap sensor free) Maglev system with controlled PM electromagnets. The proposed compensator consists of two parts: a hybrid observer; and a robust controller. The hybrid observer, combining a reduced-order observer and an external force observer, can estimate the steady-state gap variation even with payload change. A new reaching law-based variable structure control method is employed to the robust controller synthesis for enhancing system stability. The performance of the overall compensator is tested with a single-degree-of-freedom Maglev system. Results obtained indicate the good response of the proposed compensating scheme

Published in:

IEEE Transactions on Magnetics  (Volume:31 ,  Issue: 6 )