Robust Fuzzy Attitude Stabilization of Networked Spacecraft under Actuator Saturation and Persistent Disturbance

Abstract

This paper is concerned with event-triggered robust attitude control of networked spacecraft with actuator saturation and persistent bounded disturbance via Takagi-Sugeno (T-S) fuzzy approach. Based on aperiodic sampling, a discrete-time event-triggered scheme avoiding Zeno phenomenon naturally is adopted to reduce communication burden within network. Based on the T-S fuzzy model of spacecraft, an event-triggered fuzzy controller subject to saturation constraint is established to perform robust attitude stabilization of spacecraft. Furthermore, in comparison with the most often used H∞ performance, L∞-gain performance is employed to handle the persistent bounded disturbances. By virtue of convex optimization method, the problem of controller synthesis is formulated in terms of a set of linear matrix inequalities (LMIs). Finally, simulation results are provided to prove the effectiveness of the fuzzy control scheme.