Event Triggered Fast Terminal Sliding Mode Controller for Flexible Spacecraft

Abstract

This paper proposes an attitude controller for flexible spacecraft. Flexible spacecraft is subjected to internal and external uncertainties as well as disturbances due to different factors. Here a time triggered based strategy is proposed that is based on event function. Proposed robust control strategy is based on fast terminal sliding mode controller which ensures fast convergence to equilibrium points even if initial states are far from equilibrium states. Proposed control strategy is efficient and also avoid unwinding phenomena as well as zeno behavior. Simulation results shows an effectual controller designed for spacecraft.