Prescribed Performance-Based Event-Driven Fault-Tolerant Robust Attitude Control of Spacecraft under Restricted Communication

This paper explores the problem of attitude stabilization spacecraft under multiple uncertainties and constrained bandwidth resources. The proposed control law is designed by combining sliding mode (SMC) technique with a prescribed performance (PPC) method. Further, input signal executed in an aperiodic time framework using event-trigger (ET) mechanism to minimize data transfer through wireless network. SMC provides robustness against inertial uncertainties, disturbances, actuator faults, whereas PPC strategy aims achieve predefined system performance. developed transforming into new variable function, which acts as constraint for transient steady-state responses. In addition, ET updates value only when there violation triggering rule; otherwise, output remains at fixed value. Moreover, rule constituted Lyapunov stability analysis. Thus, approach can be extended broader class complex nonlinear systems. theoretical analyses prove uniformly ultimately bounded closed-loop non-existence Zeno behavior. effectiveness methodology also presented along comparative studies simulation results.