Abstract
A novel policy gradient (PG) adaptive dynamic programming method is developed to deal with nonlinear discrete-time zero-sum games with unknown dynamics. To facilitate the implementation, a policy iteration algorithm is established to approximate the iterative Q-function, as well as the control and disturbance policies via three neural network (NN) approximators, respectively. Then, the iterative Q-function is exploited to update the control and disturbance policies via PG method. To stabilize the training process and improve the data usage efficiency, the experience replay technique is applied to train the weight vectors of the three NNs by using mini-batch empirical data from replay memory. Furthermore, the convergence in terms of the iterative Q-function is proved. Simulation results of two numerical examples are provided to show the effectiveness of the proposed method.
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Funding
This work was supported in part by the Beijing Natural Science Foundation under Grant 4212038, in part by the National Natural Science Foundation of China under Grants 61973330 and 62073085, in part by the Beijing Normal University Tang Scholar, in part by the Open Research Project of the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, under Grant 20210108 and in part by the Open Research Project of the Key Laboratory of Industrial Internet of Things & Networked Control, Ministry of Education under Grant 2021FF10.
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Mingduo Lin helped in methodology, writing, editing. Bo Zhao contributed to supervision, editing, review. Derong Liu was involved in supervision and review.
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Lin, M., Zhao, B. & Liu, D. Policy gradient adaptive dynamic programming for nonlinear discrete-time zero-sum games with unknown dynamics. Soft Comput 27, 5781–5795 (2023). https://doi.org/10.1007/s00500-023-07817-6
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DOI: https://doi.org/10.1007/s00500-023-07817-6