Performance Investigation of Reaching Laws based Sliding Mode Control in Spacecraft Attitude Anti-Unwinding Stabilization

Robustness is one of the central issue in spacecraft attitude control and sliding mode control (SMC) can be a recommended choice to address this. This paper investigates the application of sliding mode control control with improved efficacy for attitude stabilization of rigid spacecraft. Particularly, reaching law role is investigated here in controlling the performance of over all closed loop when SMC is in choice. To design the controller a novel sliding surface is defined and control algorithm is developed using equivalent control that is augmented with reaching laws. The closed loop stability is verified using the Lyapunov theory. Simulation results are given to check the efficacy of the proposed study.