Design of a repetitive controller as a feed-forward disturbance observerTools Tang, Mi, Formentini, Andrea, Odhano, S and Zanchetta, Pericle (2016) Design of a repetitive controller as a feed-forward disturbance observer. In: 42nd Annual Conference of the IEEE Industrial Electronics Society (IECON 2016), 24-27 October 2016, Florence, Italy. Full text not available from this repository.
Official URL: http://ieeexplore.ieee.org/document/7793242/
AbstractFrom the structure point of view, a repetitive controller (RC) is considerably similar to a disturbance observer. By adding a correction term to the traditional RC and considering the disturbances as states, the repetitive controller can be designed in the same way as a disturbance observer. This paper presents therefore a new simple way of tuning a repetitive controller. Simulations show that, when compared with the traditional RC, the proposed RC configuration can achieve greater stability margin. As opposed to the traditional plug-in RC, the new RC structure studied in this paper is also shown to be robust against variations in the inner loop delays if it is used in a cascaded configuration. The immunity to plant parameter variations is another added benefit of the proposed controller.
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