Abstract
A sliding mode fault tolerant controller is developed for flexible spacecraft attitude stabilization control in the presence of partial loss of actuator effectiveness fault and actuator stuck fault. Adaptive control is employed to estimate system uncertainties and unknown parameters. In contrast to traditional fault tolerant control methods, the proposed control law does not require any knowledge of the actuator faults and is implemented without ground station support. The Lyapunov stability analysis shows that the resulting closed-loop attitude system is globally asymptotically stable with high attitude accuracy, also the possible actuator fault are effectively compensated. Numerical simulation results of an application to flexible spacecraft are presented to verify the closed-loop performance benefiting from the control law derived here.
| Original language | English |
|---|---|
| Pages (from-to) | 5-9 |
| Number of pages | 5 |
| Journal | Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics |
| Volume | 43 |
| Issue number | SUPPL.1 |
| State | Published - Jul 2011 |
| Externally published | Yes |
Keywords
- Actuator stuck
- Fault tolerant
- Flexible spacecraft
- Loss of actuator effectiveness
- Sliding mode control