A attitude control method for spacecraft considering actuator constraint and dynamics based backstepping

A nonlinear control approach for satellite attitude stabilization maneuver is presented. The controller is developed by using backstepping control technique. The non-ideal dynamical behavior of actuators, referred to as actuator dynamics, is investigated. The satellite s attitude is described by MRPs. The satellites dynamic model can be deduced by a general model of actuator dynamics. And this general model actuator can be expressed all actuators possibly for space application. External disturbances and actuator constraints are all considered during this simulation. Simulation results revealed the control validity of the proposed controller.