Fixed-time sliding mode attitude tracking control for a submarine-launched missile with multiple disturbances

被引:0
作者
Liang Zhang
Changzhu Wei
Liang Jing
Naigang Cui
机构
[1] Harbin Institute of Technology,School of Astronautics
来源
Nonlinear Dynamics | 2018年 / 93卷
关键词
Submarine-launched missile; Attitude tracking control; Non-singular fixed-time fast terminal sliding mode control; Multiple disturbances; Fixed-time disturbance observer; Fixed-time differentiator;
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中图分类号
学科分类号
摘要
This paper studies a novel adaptive fixed-time sliding mode attitude tracking control for a submarine-launched missile, which is affected by sea winds, sea waves, ocean currents and other disturbances during the water-exit process. Firstly, the nonlinear water-exit dynamic model of the submarine-launched missile is established, and then it is transformed into a simple second-order attitude tracking system. Subsequently, a novel non-singular fixed-time fast terminal sliding mode surface (NFFTSMS) with fixed-time convergence is presented, and the pre-established settling time is also developed. Moreover, a novel adaptive non-singular fixed-time fast terminal sliding mode control (ANFFTSMC) is presented by employing a fixed-time disturbance observer, a fixed-time differentiator and the proposed NFFTSMS. Closed-loop stability of the proposed controller is proved by utilizing the Lyapunov methodology. Finally, numerical simulations including two typical launch trajectories of the missile are carried out to demonstrate the strong robustness of the proposed control scheme.
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页码:2543 / 2563
页数:20
相关论文
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