Robust Finite-Time Control Algorithm Based on Dynamic Sliding Mode for Satellite Attitude Maneuver

You Li and Haizhao Liang
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You Li: School of Aerospace Science and Technology, Xidian University, Xi’an 710126, China
Haizhao Liang: School of Aeronautics and Astronautics, Sun Yat-sen University, Guangzhou 510275, China

Mathematics, 2021, vol. 10, issue 1, 1-26

Abstract: Robust finite-time control algorithms for satellite attitude maneuvers are proposed in this paper. The standard sliding mode is modified, hence the inherent robustness could be maintained, and this fixed sliding mode is modified to dynamic, therefore the finite-time stability could be achieved. First, the finite -time sliding mode based on attitude quaternion is proposed and the loose finite-time stability is achieved by enlarging the sliding mode parameter. In order to get the strict finite-time stability, a sliding mode based on the Euler axis is then given. The fixed norm property of the Euler axis is used, and a sliding mode parameter without singularity issue is achieved. System performance near the equilibrium point is largely improved by the proposed sliding modes. The singularity issue of finite-time control is solved by the property of rotation around a fixed axis. System finite-time stability and robustness are analyzed by the Lyapunov method. The superiority of proposed controllers and system robustness to some typical perturbations such as disturbance torque, model uncertainty and actuator error are demonstrated by simulation results.

Keywords: finite-time control; robust control; dynamic sliding mode; satellite attitude maneuver (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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