The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems

The Loewner framework has recently been proposed for the system identification of mechanical systems, mitigating limitations current frequency domain fitting processes extraction modal parameters. In this work, computational performance, in terms elapsed time till identification, is assessed. This investigated on a hybrid, numerical and experimental dataset against two well-established methods (least-squares complex exponential, LSCE, subspace state space N4SID). Good results are achieved, better accuracy than LSCE performance N4SID.