Adaptive stochastic model predictive control via network ensemble learning

Weiliang Xiong, Defeng He, Jianbin Mu and Xiuli Wang

International Journal of Systems Science, 2023, vol. 54, issue 16, 3013-3026

Abstract: This paper proposes a novel ensemble learning-based adaptive stochastic model predictive control (SMPC) algorithm for constrained linear systems with unknown nonlinear terms and random disturbances. The ensemble network combining a feedforward neural network and a Bayesian network is used to offline learn the nonlinear dynamics and disturbance distribution parameters. Then, the mixed-tube scheme is designed to cope with input constraints and state chance constraints while decreasing computational demands and conservativeness. The reliability of the stochastic tube is guaranteed using the Hoeffding inequality-based verification mechanism, which results in a chance constraint with double probabilities. The feasibility and exponential stability of the SMPC are rigorously proven. A numerical example verifies the merits of the proposed algorithm in terms of the control performance and the feasible domain.

Date: 2023
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DOI: 10.1080/00207721.2023.2268234

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