On event‐triggered nonsmooth attitude tracking controller for a rigid spacecraft

2021 ◽  
Author(s):  
Wenwu Zhu ◽  
Haibo Du ◽  
Shihua Li
Keyword(s):  
Attitude Tracking ◽  
Tracking Controller ◽  
Rigid Spacecraft ◽  
Event Triggered

Event-triggered attitude tracking for rigid spacecraft

2019 ◽  
Vol 62 (12) ◽  
Author(s):  
Deheng Cai ◽  
Hengguang Zou ◽  
Junzheng Wang ◽  
Yuan Huang ◽  
Dawei Shi
Keyword(s):  
Attitude Tracking ◽  
Rigid Spacecraft ◽  
Event Triggered

scholarly journals Robust precision attitude tracking of an uncertain rigid spacecraft based on regulation theory

2019 ◽  
Vol 29 (15) ◽  
pp. 5290-5290 ◽  
Author(s):  
Jiafan He ◽  
Andong Sheng ◽  
Dabo Xu ◽  
Zhiyong Chen ◽  
Dan Wang
Keyword(s):  
Regulation Theory ◽  
Régulation Theory ◽  
Attitude Tracking ◽  
Rigid Spacecraft

Predefined-time control for a horizontal takeoff and horizontal landing reusable launch vehicle

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Liang Zhang ◽  
Liang Jing ◽  
Liheng Ye ◽  
Xing Gao
Keyword(s):  
Disturbance Observer ◽  
Control Parameter ◽  
Sliding Mode ◽  
Fixed Time ◽  
Launch Vehicle ◽  
Convergence Time ◽  
Content Type ◽  
Reusable Launch Vehicle ◽  
Attitude Tracking ◽  
Tracking Controller

Purpose This paper aims to investigate the problem of attitude control for a horizontal takeoff and horizontal landing reusable launch vehicle. Design/methodology/approach In this paper, a predefined-time attitude tracking controller is presented for a horizontal takeoff and horizontal landing reusable launch vehicle (HTHLRLV). Firstly, the attitude tracking error dynamics model of the HTHLRLV is developed. Subsequently, a novel sliding mode surface is designed with predefined-time stability. Furthermore, by using the proposed sliding mode surface, a predefined-time controller is derived. To compensate the external disturbances or model uncertainties, a fixed-time disturbance observer is developed, and its convergence time can be defined as a prior control parameter. Finally, the stability of the proposed sliding mode surface and the controller can be proved by the Lyapunov theory. Findings In contrast to other fixed-time methods, this controller only requires three control parameters, and the convergence time can be predefined instead of being estimated. The simulation results also demonstrate the effectiveness of the proposed controller. Originality/value A novel predefined-time attitude tracking controller is developed based on the predefined-time sliding mode surface (SMS) and fixed-time disturbance observer (FxTDO). The convergence time of the system can be selected as a prior control parameter for SMS and FxTDO.

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