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A new indirect adaptive algorithm for feedforward control

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2 Author(s)
Wang, A.K. ; Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA ; Ren, W.

This paper considers the deterministic adaptive feed-forward control problem for disturbance rejection. A new indirect adaptive control algorithm is presented as an alternative to the well-known "filtered-X LMS" algorithm when the disturbance is periodic with unknown frequency. This new algorithm requires the solution of a Diophantine equation and a simple scheme to recursively solve this equation is developed. The new algorithm is shown to converge without the use of a dither signal for plant modeling. Simulations demonstrate that the proposed algorithm has improved transient response and convergence speed than the filtered-X algorithm. The applicability of the algorithm to the adaptive active noise cancelling problem is considered.

Published in:

American Control Conference, 1994  (Volume:3 )

Date of Conference:

29 June-1 July 1994