Combined Plant and Control Co-Design for Robust Disturbance Rejection in Thermal-Fluid Systems

Nash, Austin L.; Jain, Neera

doi:10.1109/tcst.2019.2931493

Cited by 14 publications

(2 citation statements)

References 27 publications

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“…Optimizing both the physical plant and the controller simultaneously enables rapid identification of stable, system-level optimal results. This integrated design approach has been studied extensively under the term control co-design (CCD) [1,[7][8][9][10][11]. Recently, the importance of these integrated design approaches for energy system design has been recognized by domain experts.…”

Section: Introductionmentioning

confidence: 99%

Open-Loop Control Co-Design of Floating Offshore Wind Turbines Using Linear Parameter-Varying Models

Sundarrajan

Lee

Allison

et al. 2021

Volume 3A: 47th Design Automation Conference (DAC)

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This paper discusses a framework to design elements of the plant and control systems for floating offshore wind turbines (FOWTs) in an integrated manner using linear parameter-varying models. Multiple linearized models derived from high-fidelity software are used to model the system in different operating regions characterized by the incoming wind speed. The combined model is then used to generate open-loop optimal control trajectories as part of a nested control co-design strategy that explores the system’s stability and power production in the context of crucial plant and control design decisions. A cost model is developed for the FOWT system, and the effect of plant decisions and subsequent power and stability response of the FOWT is quantified in terms of the levelized cost of energy (LCOE) for that system. The results show that the stability constraints and the plant design decisions affect the turbine’s power and, subsequently, LCOE of the system. The results indicate that a lighter plant in terms of mass can produce the same power for a lower LCOE while still satisfying the constraints.

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Section: Introductionmentioning

confidence: 99%

Open-Loop Control Co-Design of Floating Offshore Wind Turbines Using Linear Parameter-Varying Models

Sundarrajan

Lee

Allison

et al. 2021

Volume 3A: 47th Design Automation Conference (DAC)

View full text Add to dashboard Cite

show abstract

“…CCD is an interdisciplinary research area with contributions from engineering design and control experts alike. Control systems researchers have emphasized the design of CCD methods that synthesize static optimal controllers, ranging from LQR [1], [2], [3] to H-infinity [4], [5]. In the design community, a major emphasis is on static parameter optimization and an open-loop control policy that assumes the future is known perfectly [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Robust Control Co-Design with Receding-Horizon MPC

Nash¹,

Pangborn²,

Jain³

2021

Preprint

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Control co-design (CCD) is a technique for improving the closed-loop performance of systems through the coordinated design of both plant parameters and an optimal control policy. While model predictive control (MPC) is an attractive control strategy for many systems, embedding it within a CCD algorithm presents challenges because obtaining a closed-form solution for this receding-horizon optimization strategy is often not feasible. This paper meets that challenge by including a robust MPC formulation within the inner loop of a CCD algorithm. As exemplified by application to an aircraft thermal management system, the proposed algorithm closely matches the plant design of an open-loop benchmark. However, unlike the open-loop approach, the proposed algorithm can leverage MPC control variables designed a priori to achieve robust online operation under disturbance profiles that differ from those used for design.

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