Abstract
This paper investigates the tracking control problem for a class of second-order nonlinear systems with mismatched and matched uncertainties. The lumped unknown uncertainties of the different channels of the system are estimated by the proposed barrier function-based disturbance observers. On this basis, combined with the idea of backstep** control, a finite-time tracking control strategy is developed. The Lyapunov stability theory proves the stability and convergence of the closed-loop system. Numerical simulations verify the theoretical derivation. Finally, the performance advantages of the proposed method are shown by comparing it with other methods.
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Zhang, X., Xu, L., Zhu, Y., Chen, L., Li, G. (2023). Disturbance Observer-Based Finite-Time Tracking Control for a Class of Second-Order Nonlinear Systems with Mismatched and Matched Uncertainties. In: Yan, L., Duan, H., Deng, Y. (eds) Advances in Guidance, Navigation and Control. ICGNC 2022. Lecture Notes in Electrical Engineering, vol 845. Springer, Singapore. https://doi.org/10.1007/978-981-19-6613-2_388
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DOI: https://doi.org/10.1007/978-981-19-6613-2_388
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