Asymptotic output tracking control with prescribed transient performance of nonlinear systems in the presence of unknown dynamics
Funding information: National Natural Science Foundation of China, Grant/Award Numbers: 61803097; 61733006; 62103097; 62121004; U2013601; Guangdong Province Science Foundation, Grant/Award Number: 2022A1515011239; Local Innovative and Research Teams Project of Guangdong Special Support Program, Grant/Award Number: 2019BT02X353; Key Area Research and Development Program of Guangdong Province, Grant/Award Number: 2021B0101410005
Abstract
In this article, we address the problem of asymptotic output tracking control with prescribed transient performance for a class of nonlinear systems in the presence of unknown dynamics. By fusing the funnel control approach and the tool of barrier Lyapunov function, a smooth adaptive tracking control strategy is developed in a recursive manner. In the proposed design, a new barrier Lyapunov function is adopted to eliminate the effects of unknown nonlinear dynamics, ensuring the prescribed transient behavior of the output tracking. The distinctive characteristic of the proposed method is that the designed control algorithm can guarantee not only prescribed output tracking performance but also global asymptotic stability without incorporating any prior knowledge of nonlinear dynamics or even corresponding bounding functions. Three illustrative examples are provided to testify the effectiveness of the proposed method.
CONFLICT OF INTEREST
The authors declare no potential conflict of interests.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.