Adaptive Fault-Tolerant Control for Attitude Tracking of a Carrier-Based Aircraft Subject to Actuator Faults
Simin Liu, Zewei Zheng, Bing Zhu, Zhiyuan Guan
Abstract
This article presents a fault-tolerant attitude tracking control for carrier-based aircraft subject to actuator faults. The proposed controller adopts nonlinear dynamic inversion (NDI) to ensure asymptotic attitude tracking for the fault-free attitude system and employs <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\mathcal{L}_{1}$</tex-math></inline-formula> piecewise constant adaptive law to compensate for errors caused by actuator lock-in-place (LIP) faults. Theoretical analysis indicates that by reducing the sampling time of the adaptive law, the performance difference bounds of the closed-loop <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\mathcal{L}_{1}$</tex-math></inline-formula> adaptive system and the closed-loop reference system can be adjusted to be arbitrarily small. The fault-tolerant performance of the proposed method is supported by data acquired from flight tests.