An iterative adaptive dynamic programming algorithm for optimal control of unknown discrete-time nonlinear systems with constrained inputs

In this paper, the adaptive dynamic programming (ADP) approach is employed for designing an optimal controller of unknown discrete-time nonlinear systems with control constraints. A neural network is constructed for identifying the unknown dynamical system with stability proof. Then, the iterative A...

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Vydané v:	Information sciences Ročník 220; s. 331 - 342
Hlavní autori:	Liu, Derong, Wang, Ding, Yang, Xiong
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Elsevier Inc 20.01.2013
Predmet:	Adaptive dynamic programming Approximate dynamic programming Control constraints Globalized dual heuristic programming Neural networks Optimal control Approximate dynamic programming Adaptive dynamic programming Neural networks Control constraints Globalized dual heuristic programming Optimal control
ISSN:	0020-0255, 1872-6291
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Popis
Shrnutí:	In this paper, the adaptive dynamic programming (ADP) approach is employed for designing an optimal controller of unknown discrete-time nonlinear systems with control constraints. A neural network is constructed for identifying the unknown dynamical system with stability proof. Then, the iterative ADP algorithm is developed to solve the optimal control problem with convergence analysis. Two other neural networks are introduced for approximating the cost function and its derivatives and the control law, under the framework of globalized dual heuristic programming technique. Furthermore, two simulation examples are included to verify the theoretical results.
ISSN:	0020-0255 1872-6291
DOI:	10.1016/j.ins.2012.07.006