Adaptive tracking control for constrained nonlinear nonstrict-feedback switched stochastic systems with unknown control directions

Yanli Liu and Li-Ying Hao

Applied Mathematics and Computation, 2024, vol. 473, issue C

Abstract: This brief proposes a novel tracking control strategy to cope with the asymmetric state constraints for nonstrict-feedback and nonlinear switched stochastic systems with unknown control directions. Firstly, without requiring piecewise Barrier Lyapunov functions (BLFs), the asymmetric constraint restrictions are unfastened well in the recursive idea according to a series of new-style coordinate transformations. Then, a novel error compensation mechanism based on the state constraint conditions is incorporated into the tracking differentiator (TD) technology to tackle the “differential explosion” problem in the backstepping design, and a low-cost adaptive control strategy under single adaptive law is built to simplify the computation, meanwhile, the control objective is achieved. Followed by the rigorous theoretical proof, the applicability is presented by a practical example.

Keywords: Switched stochastic nonstrict-feedback systems; Unknown control directions; Tracking differentiator (TD); Asymmetric full state constraints; New coordinate transformation (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:473:y:2024:i:c:s0096300324001383

DOI: 10.1016/j.amc.2024.128666

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