Adaptive Backstepping Sliding Mode Control of Spacecraft Attitude Tracking
نویسنده
چکیده
This paper investigates the attitude tracking problem for rigid spacecraft. An adaptive backstepping sliding mode control law is proposed to solve this problem in the presence of inertia uncertainties and external disturbances. The control scheme is developed by combining sliding mode control with adaptive backstepping technique to achieve fast and accurate tracking responses. The proposed control law provides complete compensation of uncertainty and disturbances. Although it assumes that the uncertainty and disturbances are bounded, this control law does not require information about the bounds on the uncertainties and disturbances. The asymptotic convergence of attitude tracking is ensured by Lyapunov approach. Numerical simulations on attitude tracking control of spacecraft are provided to demonstrate the performance of the proposed controller.
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