未知扰动下非严格反馈系统的自适应优化跟踪控制

doi:10.12305/j.issn.1001-506X.2025.06.26

Abstract

Abstract:

An adaptive backstepping-based optimized control strategy is proposed for non-strict feedback systems with unknown disturbances and unmeasurable states. Firstly, a composite observer is constructed, aiming to observe both the unknown states and disturbances of the system. Secondly, a non-quadratic cost function containing the disturbance estimation is introduced at each step of the backstepping design, and all the virtual optimal controllers and the final actual optimal controllers are designed, which ensure the system stability while achieving control optimization. In the design process of the optimal backstepping method, only the single critic network is introduced, which simplifies the controller design process and reduces the complexity of the control system structure.Finally, the stability of the closed-loop system is proved by Lyapunov stability analysis and the effectiveness of the proposed method is verified by numerical simulation.

Key words: unknown disturbance, unmeasurable state, optimized control, non-strict feedback system

CLC Number:

TP273

Ruru LI, Jing LI, Zhaohui ZHANG. Adaptive optimized tracking control of non-strict feedback systems under unknown perturbations[J]. Systems Engineering and Electronics, 2025, 47(6): 1985-1993.

Figures/Tables 8

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Adaptive optimized tracking control of non-strict feedback systems under unknown perturbations

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