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In this paper, we propose a unified framework for the mixed-product run-to-run (RtR) controller, which is called the output disturbance observer (ODOB) structure. Many mixed-product RtR controllers, such as product-based exponentially weighted moving average (PB-EWMA) threaded predictor corrector controller (t-PCC), cycle forecasting EWMA (CF-EWMA), and combined product and tool disturbance estimator...