Abstract
An intelligent fault-tolerant control design based on nonlinear adaptive control theory is proposed for micro-satellite attitude control system, without providing for redundant actuators. An intelligent neural adaptive fault-tolerant control law, based on feedback error learning scheme is developed to aid the baseline controller. Using this control law, the control torques are suitably adjusted to achieve the desired target acquisition mode under a partial actuator failure in the roll direction. Simulation studies have been carried-out to examine the capabilities of the proposed fault-tolerant control system (***Suresh : not sure if this is right :::under misalignment of actuator and) under partial actuator failure in the roll-axis. Results clearly show that the proposed intelligent controller is robust and requires a minimal settling time during the desired target acquisition mode.
Published Version
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