期刊
AICHE JOURNAL
卷 61, 期 12, 页码 4179-4190出版社
WILEY-BLACKWELL
DOI: 10.1002/aic.14951
关键词
production scheduling; model predictive control; integrated scheduling and control
资金
- ABB Corporate Research
- NSF CAREER Award [CBET-1454433]
- Moncrief Grand Challenges Award from Institute for Computational Engineering and Sciences at The University of Texas at Austin
The integration of production management and process control decisions is critical for improving economic performance of the chemical supply chain. A novel framework for integrating production scheduling and model predictive control (MPC) for continuous processes is proposed. Our framework is predicated on using a low-dimensional time scale-bridging model (SBM) that captures the closed-loop process dynamics over the longer time scales that are relevant to scheduling calculations. The SBM is used as a constraint in a mixed-integer dynamic formulation of the scheduling problem. To synchronize the scheduling and MPC calculations, a novel scheduling-oriented MPC concept is proposed, whereby the SBM is incorporated in the expression of the controller as a (soft) dynamic constraint and allows for obtaining an explicit description of the closed-loop process dynamics. Our framework scales favorably with system size and provides desirable closed-loop stability and performance properties for the resulting integrated scheduling and control problem. (c) 2015 American Institute of Chemical Engineers
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