Sampled-Data Control of Networked Autonomous Spacecraft under Sporadic Measurement

Résumé fourni par la source

This paper researches the sampled-data control problem of networked autonomous spacecraft systems with aperiodic sampling and actuator saturation. Firstly, this paper considers non-differentiable time-varying delays to relax the conventional differentiable assumption and better describe practical networked communication. Subsequently, an improved Lyapunov functional depending on both sampling intervals and delays is constructed to remove the restrictive condition and derive less conservative LMI stability criteria. Especially, considering the physical constraints on actuator outputs in practical spacecraft systems, a sampled-data controller explicitly accounting for actuator saturation is designed, which improves the practical applicability of the proposed control scheme. Finally, a practical example of a flexible spacecraft is provided to verify the effectiveness and rationality of the obtained results.

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