Adaptive Multivariable Integral TSMC of a Hypersonic Gliding Vehicle With Actuator Faults and Model Uncertainties

Abstract

This paper presents a fault-tolerant control (FTC) strategy for a hypersonic gliding vehicle (HGV) subject to actuator malfunctions and model uncertainties. The controloriented model of the HGV is estabilished according to the HGV kinematic and aerodynamic models. A composite-loop design for HGV FTC under actuator faults is subsequently developed, where newly developed multivariable integral terminal sliding mode control (TSMC) and adaptive techniques are integrated. The multivariable integral TSMC is capable of ensuring the finitetime stability of the closed-loop system in the presence of actuator malfunctions and model uncertainties, while the adaptive laws are employed to tune the control parameters in response to the HGV status. Simulation studies based on a six degree-of-freedom (DOF) nonlinear model of the HGV are illustrated to highlight the effectiveness of the developed FTC scheme.

Finite‐time trajectory tracking control for entry guidance

“…Consider the entry dynamic model (13) in the presence of uncertainty, the proposed ANFTSMC law (22) can guarantee that the system trajectory converges into the neighborhood Δ s of NFTSM surface s = 0 in finite time. Meanwhile, the parameter estimation errorsã 1 andã 2 can converge into region Δã 1 and Δã 2 in finite time, respectively.…”

“…As for the case oḟr = 0, we will show that it is not an attractor in the reaching phase. Then, substituting the control law (22)…”

“…The finite‐time stability of closed‐loop system usually exhibits better robustness, faster convergence rate, and higher precision . More recently, on the basis of nonsingular terminal SMC (NTSMC) or nonsingular fast terminal SMC (NFTSMC), advanced guidance and control laws are proposed . In the work of Li et al, multivariable integral terminal SMC (TSMC) is designed to ensure the finite‐time stability of the system in the presence of model uncertainties.…”

“…[16][17][18][19][20][21] More recently, on the basis of nonsingular terminal SMC (NTSMC) or nonsingular fast terminal SMC (NFTSMC), advanced guidance and control laws are proposed. [22][23][24][25] In the work of Li et al, 22 multivariable integral terminal SMC (TSMC) is designed to ensure the finite-time stability of the system in the presence of model uncertainties. To exactly estimate unknown external disturbances, the finite-time disturbance observer (FTDO) is introduced in the works of Wang et al, 23,24 and then, the FTDO-based TSMC methods are proposed to handle the trajectory tracking problem for marine surface vehicles and underactuated surface vehicles.…”

Constrained Adaptive Neural Control for Air-Breathing Hypersonic Vehicles without Backstepping

“…The design of the flight control system is an important issue to ensure that the AHV can accomplish its intended task. Due to the complex flight environment, the highly nonlinear dynamic behavior, and the large uncertainty [3,4], it is a huge challenge to design the controllers with satisfactory performance.…”