Adaptive backstepping control for a hypersonic vehicle with uncertain parameters and actuator faults

Abstract

For a hypersonic vehicle with redundant elevators, an adaptive backstepping fault-tolerant control scheme is designed for its longitudinal motion model. In the backstepping design, the dynamic surface control strategy is adopted to eliminate the explosion of complexity in calculating the derivatives of virtual control inputs by introducing two first-order filters. An appropriate controller structure is proposed and the matching conditions are derived for adaptive fault compensation for the vehicle with redundant elevators subject to uncertain actuator faults. The adaptation laws are designed to update parameter estimates to implement the adaptive controller. The closed-loop stability under the proposed adaptive actuator fault compensation scheme is analyzed. Both analytical and simulation results are given to verify the effectiveness of the design and demonstrate the desired performance for altitude and velocity control.

Adaptive fault tolerant control for hypersonic vehicle with external disturbance

“…An adaptive controller dealing with tracking problem for GHV encountered actuator efficiency loss is constructed, so that the system can complete flight mission perfectly. 23 However, only actuator effectiveness loss fault is considered.…”

Compromise Optimal Design using Control-based Analysis of Hypersonic Vehicles

“…By contrast, the index in Equation (15) results in the deviation of the trim angle of attack from 1°, even reaching an unexpected negative value. These results demonstrate that the compromise specification in Equation (16) is better than that in Equations (12) and (15) because the optimized flight conditions are acquired by applying the compromise optimal design for hypersonic vehicles.…”

“…Based on Equation (11), the trim values are solved on the given flight condition. Furthermore, the static feature specification i (12), (15), and (16) are considered, and the comparative results are listed in Table 2.…”

“…Several advanced control approaches were adopted to design the robust adaptive controller for hypersonic vehicles. These techniques include high-order dynamic sliding mode control method [13], neural control mean [14], and adaptive back-stepping control strategies [15]. Establishing a model of the hypersonic vehicle is important for designing a feasible controller, thus ensuring the wavering stability and completing the command track.…”

Adaptive sliding mode fault-tolerant control for hypersonic vehicle based on radial basis function neural networks

“…In recent years, some effective FTC approaches have been proposed for longitude dynamics of hypersonic vehicles, such as backstepping control, 7 state tracking control 8 and output feedback control. 9 In the study by Qi et al, 7 an adaptive backstepping FTC scheme was proposed for a hypersonic vehicle with parameter uncertainties and actuator fault.…”