A fractional order sliding mode controller design for spacecraft attitude control system

As fractional order sliding mode controller has its unique advantages, it has been widely studied in recently years. This paper will discuss about the fractional order sliding mode controller and design a controller which is used into the spacecraft attitude system so that it can be with more quickness and strong robustness. A new sliding mode surface is proposed and it is proved that the system can be stable and can convergence in a finite time under this sliding mode surface. Simulation results show that this method can make the spacecraft attitude system has better performance.