Autonomous system identification and control of MACE II using the Frequency Domain Expert algorithm

The Frequency Domain Expert (FDE) adaptive identification and control design algorithm will be applied to the Middeck Active Control Experiment (MACE) during a re-flight of the experiment. FDE was recently developed by the authors to address the need for an algorithm that requires only local measurement, has predictable convergence properties, and yields performance in terms easily understood by controls system engineers. Ground testing to date has produced FDE controllers that reduce line-of-sight error by more than 22 dB, only a few dB less than the best performance attained via offline, fixed-gain LQG controllers during the original MACE flight.