Disturbance observer-based sliding manifold predictive control for reentry hypersonic vehicles with multi-constraint

Abstract

The presence of system strong constraints and large uncertainties in reentry hypersonic vehicles deteriorate the system performance. This paper considers disturbance observer-based sliding manifold predictive control design for a reentry hypersonic vehicle. In the outer loop, a new sliding manifold-based predictive control is proposed to realize reference command tracking. In the inner loop, a nonlinear disturbance observer is adopted to estimate lumped disturbances and a sliding manifold-based predictive control is designed to track the expected signal obtained from the outer loop. The use of sliding manifolds and disturbance observer enhance the control system’s robustness to uncertainties. The mode predictive control approach guarantees the satisfaction of the system constraints. The effectiveness of the proposed algorithm is verified by theoretical analysis and simulations.

Barrier Lyapunov Function-Based Adaptive Back-Stepping Control for Electronic Throttle Control System

“…At present, constrained control strategy has been studied by some scholars [14][15][16][17][18][19][20][21]. A path tracking control strategy based on linear model predictive control with softening constraints is proposed in [14].…”

New fixed-time sliding mode control for a mismatched second-order system

“…In order to conveniently design controller, disturbances or perturbations are viewed as parameter uncertainties, unmodelled dynamics and time varying external disturbances existed in the system, and different control methods based on disturbances observer or perturbations observer has been extensively utilized to address uncertainties problem (An et al, 2016; Guo et al,, 2017; Marco et al, 2017; Yang et al, 2018; Zhang and Sun, 2016). Perturbation observer-based sliding mode control (POSMC) is the sliding-mode control based on a sliding-mode state and perturbation observer (Yang et al, 2019), and perturbation can be rapidly estimated and compensated online to guarantee the asymptotic stability.…”

A novel guaranteed tracking performance control for reentry vehicle with actuator constraints and uncertainties

“…Model predictive control and its modified methods have been successfully implemented for the reentry vehicle due to its inherent ability for handling state and input constraints simultaneously (Halbe et al, 2014; Kim et al, 2013; Zhang and Sun, 2016). Zhang, and Sun (2016) propose a disturbance observer-based sliding manifold predictive control design for a reentry hypersonic vehicle and enhances the robustness to uncertainties and satisfaction to the system constraints. However, the online optimization restricts its applications to some extent.…”