Fault-tolerant attitude control of the satellite in the presence of simultaneous actuator and sensor faults

In this section, the three-axis attitude control is designed for the spacecraft in two stages.

Step 1::

A sliding mode controller without considering the actuator dynamics.

Step 2::

A back-stepping sliding mode controller considering the actuator dynamics.

Then, the simulation results of these two fault-tolerant controllers using thrusters and reaction wheel alone are presented.

Design of sliding mode controller

In this section, a sliding mode controller is designed without considering the dynamic model of the…