A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets

In the dual-mode model predictive control (MPC) framework, the size of the stabilizable set, which is also the region of attraction, depends on the terminal constraint set. This paper aims to formulate a larger terminal set for enlarging the region of attraction in a nonlinear MPC. Given several con...

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Main Authors: Ismi Rosyiana Fitri, Jung-Su Kim
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/8/11/2087
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author Ismi Rosyiana Fitri
Jung-Su Kim
author_facet Ismi Rosyiana Fitri
Jung-Su Kim
author_sort Ismi Rosyiana Fitri
collection DOAJ
description In the dual-mode model predictive control (MPC) framework, the size of the stabilizable set, which is also the region of attraction, depends on the terminal constraint set. This paper aims to formulate a larger terminal set for enlarging the region of attraction in a nonlinear MPC. Given several control laws and their corresponding terminal invariant sets, a convex combination of the given sets is used to construct a time-varying terminal set. The resulting region of attraction is the union of the regions of attraction from each invariant set. Simulation results show that the proposed MPC has a larger stabilizable initial set than the one obtained when a fixed terminal set is used.
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spelling doaj.art-4f85acb55a364648bbd60cb0317953742023-11-20T21:54:49ZengMDPI AGMathematics2227-73902020-11-01811208710.3390/math8112087A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant SetsIsmi Rosyiana Fitri0Jung-Su Kim1Department of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, KoreaDepartment of Electrical and Information Engineering, Seoul National University of Science and Technology, Seoul 01811, KoreaIn the dual-mode model predictive control (MPC) framework, the size of the stabilizable set, which is also the region of attraction, depends on the terminal constraint set. This paper aims to formulate a larger terminal set for enlarging the region of attraction in a nonlinear MPC. Given several control laws and their corresponding terminal invariant sets, a convex combination of the given sets is used to construct a time-varying terminal set. The resulting region of attraction is the union of the regions of attraction from each invariant set. Simulation results show that the proposed MPC has a larger stabilizable initial set than the one obtained when a fixed terminal set is used.https://www.mdpi.com/2227-7390/8/11/2087interpolation methodMPCnonlinear
spellingShingle Ismi Rosyiana Fitri
Jung-Su Kim
A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets
Mathematics
interpolation method
MPC
nonlinear
title A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets
title_full A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets
title_fullStr A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets
title_full_unstemmed A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets
title_short A Nonlinear Model Predictive Control with Enlarged Region of Attraction via the Union of Invariant Sets
title_sort nonlinear model predictive control with enlarged region of attraction via the union of invariant sets
topic interpolation method
MPC
nonlinear
url https://www.mdpi.com/2227-7390/8/11/2087
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