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In this paper, robust actuator fault reconstruction for satellite attitude control systems (ACSs) in the presence of space environmental disturbances and actuator faults is investigated via a learning observer (LO). First, a nonlinear mathematical model of the satellite ACS satisfying Lipschitz constraint is established; then an LO is constructed to achieve robust reconstruction of satellite attitude...
The modeling and control problem is investigated for cold rolling mill system. Firstly, we establish a hydraulic automatic gauge control (HAGC) model for a practical cold rolling mill system. The new model is with mismatched uncertainties and time delay. Then, an extended state observer (ESO) based predictive control strategy for HAGC system is developed. We propose a new ESO to estimate the unmeasured...
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