[HTML][HTML] Advanced control using decomposition and simple elements

S Skogestad - Annual Reviews in Control, 2023 - Elsevier
The paper explores the standard advanced control elements commonly used in industry for
designing advanced control systems. These elements include cascade, ratio, feedforward …

[HTML][HTML] Real-time optimization as a feedback control problem–a review

D Krishnamoorthy, S Skogestad - Computers & Chemical Engineering, 2022 - Elsevier
Feedback optimizing control aims to achieve asymptotic optimal operation by directly
manipulating the inputs using feedback controllers, without the need to solve numerical …

Adaptive fuzzy tracking control of switched MIMO nonlinear systems with full state constraints and unknown control directions

F Tang, B Niu, H Wang, L Zhang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In this brief, an adaptive fuzzy tracking control method is proposed for switched multi-input
multi-output (MIMO) nonlinear systems with time-varying full state constrains (TFSCs) and …

Model‐free real‐time optimization of process systems using safe Bayesian optimization

D Krishnamoorthy, FJ Doyle III - AIChE Journal, 2023 - Wiley Online Library
Conventional real‐time optimization (RTO) requires detailed process models, which may be
challenging or expensive to obtain. Model‐free RTO methods are an attractive alternative to …

[HTML][HTML] Decentralized control using selectors for optimal steady-state operation with changing active constraints

LF Bernardino, S Skogestad - Journal of Process Control, 2024 - Elsevier
We study the optimal steady-state operation of processes where the active constraints
change. The aim of this work is to eliminate or reduce the need for a real-time optimization …

Advanced Regulatory Control Techniques for Improved Averaging Level Control Performance

GZ Gous, AJ Wiid, JD Le Roux… - Industrial & Engineering …, 2023 - ACS Publications
Averaging level control is used in liquid processing plants to optimally use the available
volume in surge drums and storage tanks to stabilize the feed to downstream equipment …

[HTML][HTML] Systematic design of active constraint switching using selectors

D Krishnamoorthy, S Skogestad - Computers & chemical engineering, 2020 - Elsevier
Selector logic is a simple and effective tool to switch between different controlled variables
associated with change in active constraints. Selector blocks have been extensively used in …

Primal–dual feedback-optimizing control with override for real-time optimization

R Dirza, S Skogestad - Journal of Process Control, 2024 - Elsevier
Primal–dual feedback-optimizing control is a simple yet powerful approach to optimally
handle active constraint changes at steady state. It is composed of two layers: Constraint …

[HTML][HTML] Operation and control of compact offshore combined cycles for power generation

RM Montañés, C Zotică, A Reyes-Lúa - Energy, 2024 - Elsevier
Gas turbines are the main means for generating power in offshore installations. To increase
energy efficiency, and thus reduce CO 2 emissions, a steam bottoming cycle can be added …

[HTML][HTML] Bidirectional inventory control with optimal use of intermediate storage

C Zoticǎ, K Forsman, S Skogestad - Computers & Chemical Engineering, 2022 - Elsevier
The scope of this work is to advocate the use of a decentralized control system that is able to
maximize production when temporary or permanent bottlenecks occur for multiple units in …