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Model Predictive Control Tuning by Inverse Matching for a Wave Energy Converter

by 1,†, 2,† and 2,*,†
1
Department of Mechanical Engineering, Bradley University, Peoria, IL 61625, USA
2
Water Power Technologies Department, Sandia National Laboratories, Albuquerque, NM 87185, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Energies 2019, 12(21), 4158; https://doi.org/10.3390/en12214158
Received: 17 September 2019 / Revised: 22 October 2019 / Accepted: 25 October 2019 / Published: 31 October 2019
(This article belongs to the Section Wind, Wave and Tidal Energy)
This paper investigates the application of a method to find the cost function or the weight matrices to be used in model predictive control (MPC) such that the MPC has the same performance as a predesigned linear controller in state-feedback form when constraints are not active. This is potentially useful when a successful linear controller already exists and it is necessary to incorporate the constraint-handling capabilities of MPC. This is the case for a wave energy converter (WEC), where the maximum power transfer law is well-understood. In addition to solutions based on numerical optimization, a simple analytical solution is also derived for cases with a short prediction horizon. These methods are applied for the control of an empirically-based WEC model. The results show that the MPC can be successfully tuned to follow an existing linear control law and to comply with both input and state constraints, such as actuator force and actuator stroke. View Full-Text
Keywords: model predictive control (MPC); constrained linear systems; controller tuning; wave energy converter (WEC) model predictive control (MPC); constrained linear systems; controller tuning; wave energy converter (WEC)
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MDPI and ACS Style

Cho, H.; Bacelli, G.; Coe, R.G. Model Predictive Control Tuning by Inverse Matching for a Wave Energy Converter. Energies 2019, 12, 4158. https://doi.org/10.3390/en12214158

AMA Style

Cho H, Bacelli G, Coe RG. Model Predictive Control Tuning by Inverse Matching for a Wave Energy Converter. Energies. 2019; 12(21):4158. https://doi.org/10.3390/en12214158

Chicago/Turabian Style

Cho, Hancheol; Bacelli, Giorgio; Coe, Ryan G. 2019. "Model Predictive Control Tuning by Inverse Matching for a Wave Energy Converter" Energies 12, no. 21: 4158. https://doi.org/10.3390/en12214158

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