Tuning heuristics and convergence analysis of reinforcement learning algorithm for online data-based optimal control design

Fábio Nogueira da Silva, João Viana Fonseca Neto

Abstract


A heuristic for tuning and convergence analysis of the reinforcement learning algorithm for control with output feedback with only input / output data generated by a model is presented. To promote convergence analysis, it is necessary to perform the parameter adjustment in the algorithms used for data generation, and iteratively solve the control problem. A heuristic is proposed to adjust the data generator parameters creating surfaces to assist in the convergence and robustness analysis process of the optimal online control methodology. The algorithm tested is the discrete linear quadratic regulator (DLQR) with output feedback, based on reinforcement learning algorithms through temporal difference learning in the policy iteration scheme to determine the optimal policy using input / output data only. In the policy iteration algorithm, recursive least squares (RLS) is used to estimate online parameters associated with output feedback DLQR. After applying the proposed tuning heuristics, the influence of the parameters could be clearly seen, and the convergence analysis facilitated.


Keywords


Optimal Control; Reinforcement Learning; Approximate Dynamic Programming; Output Feedback; Tuning.

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References


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DOI: http://dx.doi.org/10.33448/rsd-v9i2.2128

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