Performance Study of Sliding Mode Attitude Controllers for Low Earth Orbit CubeSat

This paper pertains to the design of attitude control system actuated with reaction wheels for low Earth orbit CubeSat. The control system is implemented based on sliding mode approach, in which two control modes are proposed: sign mode and smooth mode. The smooth function is utilized to reject chattering effect and prevent torque saturation for reaction wheels. An evaluation study has been conducted to see, if the investigated control modes provide a benefit in performance and convergence behavior under the presence of external disturbances.