Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 61, Issue 15, Pages 5239-5254Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.2c00113
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Funding
- National Science Foundation [1932723]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1932723] Funding Source: National Science Foundation
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The robust design of performance/safety-critical process systems from a model-based perspective remains a challenge. Hybrid first-principles data-driven models can improve model prediction accuracy, moving closer to the concept of a digital twin. This study addresses worst-case engineering design feasibility and reliability problems using a class of semi-infinite program formulations with hybrid models as equality constraints. The reduced-space deterministic global optimization methods used in this approach demonstrate their effectiveness in solving the problems with a finite number of iterations. Two case studies are presented to showcase the application of this approach in addressing worst-case feasibility verification of dynamical systems and overcoming numerical domain violations in a three-phase separation system.
: The robust design of performance/safety-critical process systems, from a model-based perspective, remains an existing challenge. Hybrid firstprinciples data-driven models offer the potential to dramatically improve model prediction accuracy, stepping closer to the digital twin concept. Within this context, worst-case engineering design feasibility and reliability problems give rise to a class of semi-infinite program (SIP) formulations with hybrid models as coupling equality constraints. Reduced-space deterministic global optimization methods are exploited to solve this class of SIPs to ??-global optimality in finitely many iterations. This approach is demonstrated on two challenging case studies: a nitrification reactor for a wastewater treatment system to address worst-case feasibility verification of dynamical systems and a three-phase separation system plagued by numerical domain violations to demonstrate how they can be overcome using a nonsmooth SIP formulation with hybrid models and a validity constraint incorporated.
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