期刊
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
卷 24, 期 17, 页码 2852-2866出版社
WILEY-BLACKWELL
DOI: 10.1002/rnc.3029
关键词
singular perturbations; model reduction; nonlinear control; process control
In this work, we generalize our previous results concerning the impact of material recycling and energy recovery on plant dynamics and control. We define a generic class of integrated process systems, in which an extensive quantity that obeys conservation laws is recovered from the process output and recycled to the process feed; the operation of the system is assumed to be subject to time-varying, measurable disturbances. We establish, in this general case, that integration is conducive to the emergence of a two-time-scale dynamic behavior and derive reduced-order models for the dynamics in each time scale. Subsequently, we postulate a hierarchical control framework that exploits these dynamics results in the design of coordinated fast and slow feedback/feedforward controllers and formulate a stability result for the closed-loop system. We demonstrate these concepts on a case study concerning an energy-integrated process. Copyright (c) 2013 John Wiley & Sons, Ltd.
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