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- Title
Adaptive prescribed performance control for state constrained stochastic nonlinear systems with unknown control direction: a novel network-based approach.
- Authors
Han, Yu-Qun; Li, Na; Wang, Dong-Mei; Zhou, Ya-Feng; Zhu, Shan-Liang
- Abstract
In this paper, the tracking control problem of the state constrained stochastic nonlinear systems with unknown control direction is studied, and a novel adaptive prescribed performance control (PPC) approach is developed with the help of the multi-dimensional Taylor network (MTN). Firstly, a performance function is introduced into the first step of backstepping to ensure transient performance under state constraints. Secondly, the tangent time-varying barrier Lyapunov functions (tan-TVBLFs) are constructed to prevent all states from violating the given time-varying boundary. Thirdly, the MTNs are employed to estimate the unknown nonlinearity in the process of controller design, and a new adaptive PPC strategy is designed. Then, the Lyapunov stability theorem is used to prove that the closed-loop system is semi-global uniformly ultimately bounded (SGUUB) in probability, and the tracking error can be kept in an adjustable small neighborhood of the origin. Finally, the effectiveness of the proposed scheme is verified by the simulation of a numerical example and an actual control system.
- Subjects
STOCHASTIC systems; NONLINEAR systems; ADAPTIVE control systems; LYAPUNOV stability; CLOSED loop systems; LYAPUNOV functions
- Publication
Neural Computing & Applications, 2024, Vol 36, Issue 6, p2737
- ISSN
0941-0643
- Publication type
Article
- DOI
10.1007/s00521-023-09125-4