A robust attitude control strategy with guaranteed transient performance via modified Lyapunov-based control and integral sliding mode control. (English) Zbl 1345.70048

Chen, Zhen; Cong, Bing Long; Liu, Xiang Dong

Nonlinear Dyn. 78, No. 3, 2205-2218 (2014).

Summary: In this paper, a robust control strategy with guaranteed transient performance is presented for spacecraft attitude maneuvers. Firstly, a Lyapunov-based controller is designed to achieve high-performance attitude control in the absence of disturbance and parameter variation. Unlike most existing designs, the feedback gains in the proposed controller increase with the attitude error convergence. Consequently, the system response can be accelerated without increasing the control torque at large attitude error. The overshooting phenomenon is also avoided by imposing a restriction on the parameter selection. Then, the integral sliding mode control technique is employed to preserve the desired transient characteristics and improve the robustness. Furthermore, by combining an adaptive scheme with the boundary layer method, the conservativeness in the switching gain selection is reduced and the chattering is also suppressed. Theoretical analysis and simulation results verify the effectiveness of the proposed strategy.

MSC:

70Q05	Control of mechanical systems
93C10	Nonlinear systems in control theory
93C41	Control/observation systems with incomplete information
93B52	Feedback control
93B51	Design techniques (robust design, computer-aided design, etc.)
37M05	Simulation of dynamical systems
37N35	Dynamical systems in control

Keywords:

attitude control; transient performance; Lyapunov-based control; integral sliding mode control; switching gain adaptation

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