Reinforcement learning-based adaptive tracking control for flexible-joint robotic manipulators

Autor: Huihui Zhong, Weijian Wen, Jianjun Fan, Weijun Yang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: AIMS Mathematics, Vol 9, Iss 10, Pp 27330-27360 (2024)
Druh dokumentu: article
ISSN: 2473-6988
DOI: 10.3934/math.20241328?viewType=HTML
Popis: In this paper, we investigated the optimal tracking control problem of flexible-joint robotic manipulators in order to achieve trajectory tracking, and at the same time reduced the energy consumption of the feedback controller. Technically, optimization strategies were well-integrated into backstepping recursive design so that a series of optimized controllers for each subsystem could be constructed to improve the closed-loop system performance, and, additionally, a reinforcement learning method strategy based on neural network actor-critic architecture was adopted to approximate unknown terms in control design, making that the Hamilton-Jacobi-Bellman equation solvable in the sense of optimal control. With our scheme, the closed-loop stability, the convergence of output tracking error can be proved rigorously. Besides theoretical analysis, the effectiveness of our scheme was also illustrated by simulation results.
Databáze: Directory of Open Access Journals