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Title: Virtual feedforward control for asymptotic rejection of periodic disturbance
Authors: Wang, Q.-G. 
Zhang, Y.
Huang, X.-G.
Keywords: Adaptation
Disturbance estimation
Disturbance rejection
Periodic disturbances
Repetitive control
Issue Date: Jun-2002
Citation: Wang, Q.-G., Zhang, Y., Huang, X.-G. (2002-06). Virtual feedforward control for asymptotic rejection of periodic disturbance. IEEE Transactions on Industrial Electronics 49 (3) : 566-573. ScholarBank@NUS Repository.
Abstract: In this paper, a novel, simple yet effective control scheme, called virtual feedforward control (VFC), is proposed for asymptotic disturbance rejection. The VFC control is an add-on function on top of normal feedback control, and it is activated when a periodic disturbance is found to be present in the system, based on output measurements and detection of output periodic behavior. It is shown that the proposed control can reject the periodic disturbances asymptotically under the perfect plant modeling. Furthermore, the closed-loop stability is not affected by the proposed control and, thus, there is no design tradeoff between disturbance rejection and stability. The robustness of the proposed control to model mismatch is analyzed. The effectiveness of the proposed method is sustained by simulation and comparison.
Source Title: IEEE Transactions on Industrial Electronics
ISSN: 02780046
DOI: 10.1109/TIE.2002.1005381
Appears in Collections:Staff Publications

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