Finite-Time Reentry Attitude Control Based on Adaptive Multivariable Disturbance Compensation

Abstract

The finite time tracking control for Reusable Launch Vehicle (RLV) with unmatched disturbance is investigated. An adaptive multivariabl disturbance compensation (AMDC) scheme is proposed to provide the estimation for external disturbances where the bounds of the perturbations are not known. Based on the estimation, a continuous multivariable homogeneity second order sliding mode controller is designed to ensure that the attitude tracking is achieved in finite time. A proof of the finite time convergence of the closed-loop system under the integrated controller and disturbance observer is derived using the Lyapunov technique. The features of the proposed control scheme is that it does not require any information on the bounds of the disturbance and its gradient except for their existence. At the same time, the finite time convergence, nominal performance recovery and chattering alleviation are guaranteed. Finally, some simulation tests are provided to demonstrate the effectiveness of the proposed control scheme.Index Terms-Adaptive multivariable disturbance observer, finite time convergence, Reusable Launch Vehicle.

Finite‐Time Consensus Problem for Second‐Order Multi‐Agent Systems Under Switching Topologies

“…The finite‐time consensus of multi‐agent systems means that the states of all the agents reach an common agreement in finite time by employing an appropriate consensus protocol. It has been widely used in many areas, such as mobile robots , multiple spacecraft systems , tracking control , synchronous control , containment control , formation control , and attitude control .…”

Finite‐time fully distributed formation reconfiguration control for UAV helicopters

“…Remark Independent from the well‐known multiple time principle, the stability of the UAV helicopter closed‐loop system has been proved. The designed attitude tracking control algorithm can achieve the finite‐time stability.…”

Advances in Disturbance/Uncertainty Estimation and Attenuation [Guest editors' introduction]

“…The work [13], authored by Tian et al, investigates the problem of finite time tracking control of Reusable Launch Vehicle in the presence of mismatched disturbances. An adaptive multi-variable sliding mode disturbance observer is proposed to estimate the disturbances, based on which a continuous multivariate homogeneity second order sliding mode controller is designed to achieve attitude tracking in finite time.…”