Adaptive fault‐tolerant control for a nonlinear flexible aircraft wing system

Abstract

Fault‐tolerant control problems have been extensively studied in all kinds of control systems. However, there is little work on fault‐tolerant control for distributed parameter systems. In this paper, a novel adaptive fault‐tolerant boundary control scheme is proposed for a nonlinear flexible aircraft wing system against actuator faults. The whole system is regarded as a distributed parameter system, and the dynamic model of the flexible wing system is described by a set of partial differential equations (PDEs) and ordinary differential equations (ODEs). The proposed controller is designed by using the Lyapunov's direct method and adaptive control strategies. Based on the online estimation of actuator faults, the adaptive controller parameters can update automatically to compensate the actuator faults of the system. Besides, a fault‐tolerant controller is also developed for this system in the presence of external disturbances. Differing from existing works about adaptive fault‐tolerant control, the adaptive controller presented in this paper is designed for a distributed parameter system. Finally, numerical simulations are carried out to illustrate the effectiveness of the proposed control scheme.

Robust tracking control of an aircraft with critical actuator jam failures

“…Several control strategies have been proposed to deal with the issues arising from elevator jam, or in general, actuator jam failures. These strategies, just name a few, include mixer/pseudo-inverse [8,33,27,15], multivariable adaptive reconfiguration [4,1,5,30,29,34], multiple-model/switching [5], neural network based adaptive control [13], nonlinear inverse control [25,24,16], retrim/reoptimization control [31,23], and servomechanism control [10,2,6], etc.…”

Adaptive fault-tolerant boundary vibration control for a flexible aircraft wing against actuator and sensor faults

“…Ji and Liu (2020) investigated a distributed actuator FTC problem of a flexible spacecraft. Zhang et al (2019) successfully designed an adaptive control scheme to overcome actuator fault in a flexible aircraft wing system.…”

“…Ji and Liu (2020) investigated a distributed actuator FTC problem of a flexible spacecraft. Zhang et al (2019) successfully designed an adaptive control scheme to overcome actuator fault in a flexible aircraft wing system. solved an FTC problem for a class of underactuated systems with actuator and sensor faults, but they used an ODE model that is not suitable for distributed parameter systems.…”

Event-triggered boundary quantization control for flexible manipulator based on partial differential equations dynamic model

“…In essence, flexible manipulator is a distributed parameter system, which can be accurately described by partial differential equations (PDEs). Different control schemes have been developed for flexible systems based on PDEs, such as adaptive fault-tolerant control (Zhang et al, 2019b), boundary control (He et al, 2017; Liu et al, 2017; Xing and Liu, 2019b), disturbance observer design (Yang and Liu, 2019), robust adaptive iterative control (Xing and Liu, 2019a). In the design of these controllers, the problem of the capacity of the communication channel during the transmission of the input signal is not considered, and signals need to be delivered from time to time, which will increase the communication burden and even affect the performance of the system.…”