Undiscounted control policy generation for continuous-valued optimal control by approximate dynamic programming

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Titel: Undiscounted control policy generation for continuous-valued optimal control by approximate dynamic programming
Autoren: Lock, Jonathan, 1987, McKelvey, Tomas, 1966
Quelle: International Journal of Control UCPADP Matlab implementation. 95(10):2854-2864
Schlagwörter: Approximate dynamic programming, undiscounted infinite-horizon, optimal control, control policy
Beschreibung: We present a numerical method for generating the state-feedback control policy associated with general undiscounted, constant-setpoint, infinite-horizon, nonlinear optimal control problems with continuous state variables. The method is based on approximate dynamic programming, and is closely related to approximate policy iteration. Existing methods typically terminate based on the convergence of the control policy and either require a discounted problem formulation or demand the cost function to lie in a specific subclass of functions. The presented method extends on existing termination criteria by requiring both the control policy and the resulting system state to converge, allowing for use with undiscounted cost functions that are bounded and continuous. This paper defines the numerical method, derives the relevant underlying mathematical properties, and validates the numerical method with representative examples. A MATLAB implementation with the shown examples is freely available.
Dateibeschreibung: electronic
Zugangs-URL: https://research.chalmers.se/publication/524715
https://research.chalmers.se/publication/523565
https://research.chalmers.se/publication/524551
https://research.chalmers.se/publication/524715/file/524715_Fulltext.pdf
Datenbank: SwePub
Beschreibung
Abstract:We present a numerical method for generating the state-feedback control policy associated with general undiscounted, constant-setpoint, infinite-horizon, nonlinear optimal control problems with continuous state variables. The method is based on approximate dynamic programming, and is closely related to approximate policy iteration. Existing methods typically terminate based on the convergence of the control policy and either require a discounted problem formulation or demand the cost function to lie in a specific subclass of functions. The presented method extends on existing termination criteria by requiring both the control policy and the resulting system state to converge, allowing for use with undiscounted cost functions that are bounded and continuous. This paper defines the numerical method, derives the relevant underlying mathematical properties, and validates the numerical method with representative examples. A MATLAB implementation with the shown examples is freely available.
ISSN:00207179
13665820
DOI:10.1080/00207179.2021.1939892