“…In [38], G. Balas already addressed the control of an experimental flexible truss structure (named Caltech Flexible Structure) using PMAs with a deep insight on the quantization of the uncertainties between the mathematical (or knowledge-based) model and the physical model. Uncertainties is also largely addressed in [39] and discussed on the MACE (Middeck Active Control Experiment) considering the impact of the suspension system required under 1-g environment on the system dynamical behavior under 0-g environment. A first toolbox for Uncertainty Bound IDentification (UBID) was proposed in [40].…”