Xu Xing-Zhi
Key Laboratory of Advanced Manufacturing and Automation Technology (Guilin University of Technology), Education Department of Guangxi Zhuang Autonomous Region, Guilin, China.
College of Mechanical and Control Engineering, Guilin University of Technology, Guilin, China.
Sci Rep. 2025 Jul 1;15(1):21789. doi: 10.1038/s41598-025-06503-x.
This study introduces an innovative control framework that integrates an auto-tuning fractional-order fast terminal sliding mode control strategy with a finite time disturbance observer (FTDO-AFOFTSMC), aimed at mitigating flutter in nonlinear aeroelastic systems. This approach is specifically tailored to handle significant parameter variations and intense external disturbances. The control mechanism incorporates a dynamic adjustment of the switching control gain through a fuzzy logic inference scheme (FLIS), enhancing the system's adaptability to parameter uncertainties. Additionally, the inclusion of a nonlinear disturbance observer bolsters the system's robustness against extreme disturbances. The finite time stability of this control scheme is established using the Lyapunov theorem, and simulation results demonstrate the scheme's superior control performance and rapid convergence, surpassing traditional integer-order FTSMC in terms of vibration suppression under varying external loads and parameter conditions.
本研究介绍了一种创新的控制框架，该框架将自整定分数阶快速终端滑模控制策略与有限时间干扰观测器（FTDO-AFOFTSMC）相结合，旨在减轻非线性气动弹性系统中的颤振。这种方法专门用于处理显著的参数变化和强烈的外部干扰。控制机制通过模糊逻辑推理方案（FLIS）对切换控制增益进行动态调整，增强了系统对参数不确定性的适应性。此外，加入非线性干扰观测器提高了系统对极端干扰的鲁棒性。利用李雅普诺夫定理建立了该控制方案的有限时间稳定性，仿真结果表明该方案具有优异的控制性能和快速收敛性，在不同外部载荷和参数条件下的振动抑制方面优于传统的整数阶FTSMC。
