Finite-time sliding mode attitude control for a reentry vehicle with blended aerodynamic s

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

and a reaction control system

Geng Jie;Sheng Yongzhi ;Liu Xiangdong

【期刊名称】《中国航空学报（英文版）》 【年(卷),期】2014(000)004

【摘要】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 slid-ing 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. 【总页数】13页(964-976) 【关键词】

【作者】Geng Jie;Sheng Yongzhi ;Liu Xiangdong

【作者单位】School of Automation, Beijing Institute of Technology, Beijing 100081, China;School of Automation, Beijing Institute of Technology, Beijing 100081, China;School of Automation, Beijing Institute of Technology, Beijing 100081, China 【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-journal-aeronautics_thesis/0201219808827.html 【相关文献】

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