Abstract

In this paper, a data-driven optimal control method based on adaptive dynamic programming and game theory is presented for solving the output feedback solutions of the $H_\infty $ control problem for linear discrete-time systems with multiple players subject to multi-source disturbances. We first transform the $H_\infty $ control problem into a multi-player game problem following the theoretical solutions according to game theory. Since the system state may not be measurable, we derive the output feedback based control policies and disturbances through mathematical operations. Considering the advantages of off-policy reinforcement learning (RL) over on-policy RL, a novel off-policy game Q-learning algorithm dealing with mixed competition and cooperation among players is developed, such that the $H_\infty $ control problem can be finally solved for linear multi-player systems without the knowledge of system dynamics. Moreover, rigorous proofs of algorithm convergence and unbiasedness of solutions are presented. Finally, simulation results demonstrated the effectiveness of the proposed method.

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