Abstract
This paper establishes an adaptive dynamic programming algorithm based neuro-control scheme for nonlinear systems with unknown input constraints. The control strategy consists of an online nominal optimal control and a neural network (NN) based saturation compensator. For nominal systems without input constraints, we develop a critic NN to solve the Hamilton-Jacobi-Bellman equation. Hereafter, the online approximate nominal optimal control policy can be derived directly. Then, considering the unknown input constraints as saturation nonlinearity, NN based feed-forward compensator is employed. The ultimate uniform bounded stability of the closed loop system is analyzed via Lyapunov’s direct method. Finally, simulation on a torsional pendulum system is provided to verify the effectiveness of the proposed control scheme.
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Acknowledgments
This work was supported in part by the National Natural Science Foundation of China under Grants 61603387, U1501251, 61533017, 61773075, 61374051, 61374105 and 61503379, in part by the Scientific and Technological Development Plan Project in Jilin Province of China under Grants 20150520112JH and 20160414033GH, and in part by Beijing Natural Science Foundation under Grant 4162065.
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Zhao, B., Liu, X., Liu, D., Li, Y. (2017). Neuro-control of Nonlinear Systems with Unknown Input Constraints. In: Liu, D., Xie, S., Li, Y., Zhao, D., El-Alfy, ES. (eds) Neural Information Processing. ICONIP 2017. Lecture Notes in Computer Science(), vol 10634. Springer, Cham. https://doi.org/10.1007/978-3-319-70087-8_80
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DOI: https://doi.org/10.1007/978-3-319-70087-8_80
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