Finite-time sliding mode attitude control for a reentry vehicle with blended aerodynamic surfaces and a reaction control system

This paper proposes a finite-time robust flight controller, targeting for a reentry vehicle with blended aerodynamic surfaces and a reaction control system（RCS）. Firstly, a novel finite-time attitude controller is pointed out with the introduction of a nonsingular finite-time sliding mode manifold....

Full description

Saved in:
Bibliographic Details
Published in:Chinese journal of aeronautics 2014-08, Vol.27 (4), p.964-976
Main Authors: Geng, Jie, Sheng, Yongzhi, Liu, Xiangdong
Format: Article
Language:English
Subjects:
Aerodynamics
Attitude control
Blended
Chattering alleviation
Control allocation
Control surfaces
Finite-time convergence
Flight control systems
Mathematical analysis
Reaction control
Reentry vehicles
Second-order sliding mode
Singularity elimination
Sliding mode
Sliding mode control
再入飞行器
反应
姿态控制器
姿态控制系统
有限时间
滑模控制器
空气动力学
表面
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper proposes a finite-time robust flight controller, targeting for a reentry vehicle with blended aerodynamic surfaces and a reaction control system（RCS）. Firstly, a novel finite-time attitude controller is pointed out with the introduction of a nonsingular finite-time sliding mode manifold. The attitude tracking errors are mathematically proved to converge to zero within finite time which can be estimated. In order to improve the performance, a second-order finite-time sliding mode controller is further developed to effectively alleviate chattering without any deterioration of robustness and accuracy. Moreover, an optimization control allocation algorithm, using linear programming and a pulse-width pulse-frequency（PWPF） modulator, is designed to allocate torque commands for all the aerodynamic surface deflections and on–off switching-states of RCS thrusters.Simulations are provided for the reentry vehicle considering uncertain parameters and external disturbances for practical purposes, and the results demonstrate the effectiveness and robustness of the attitude control system.
ISSN:1000-9361
DOI:10.1016/j.cja.2014.03.013