›› 2015, Vol. 35 ›› Issue (2): 63-.doi: 10.3780/j.issn.1000-758X.2015.02.009

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Sliding-mode Attitude Controller Design for a Kind ofSpacecraft with Fuel Slosh〖ST〗〖WT〗

  

  1. (Beijing Institute of Control Engineering, Beijing 100190)
  • Online:2015-04-25 Published:2015-04-25

Abstract: An incremental sliding-mode control design method was proposed for a kind of spacecraft with fuel slosh. The whole system was divided into two parts. The incremental sliding-mode control method was mainly used for the states which are not relative equilibrium ones. Two state variables of a subsystem were chosen to construct the first-layer sliding surface, and then the first-layer sliding surface and one of the left state variables were used to construct the second-layer sliding surface. Using the Lyapunov method, a sliding-mode control law can be derived. When the states reach the equilibrium position, the incremental sliding-mode controller was degraded into the monolayer controller which ensured the system stabilized at the uppermost equilibrium position within 30 seconds. Simulation results are given to illustrate the validity.

Key words: Incremental sliding-mode, Variable structure, Attitude control, Sliding surface, Spacecraft with fuel slosh