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Power spectral analysis of networked control systems with data dropouts

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2 Author(s)
Qiang Ling ; Dept. of Electr. Eng., Notre Dame Univ., IN, USA ; Lemmon, M.D.

This note derives a closed-form expression for a control system's output power spectral density (PSD) as a function of the data dropout probability. We use the PSD to determine a dropout compensator that minimizes the regulator's output power. We show, by example, that the optimal dropout compensator does not always correspond to a filter that minimizes the mean square error between the predicted and dropped feedback measurement.

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Automatic Control, IEEE Transactions on  (Volume:49 ,  Issue: 6 )