Torsional delayed resonator with velocity feedback

This paper concerns a vibration absorption scheme, which is called the delayed resonator (DR). Torsional vibration cases are considered here for the first time with the new scheme. The angular velocity which is a commonly measurable state for rotating systems, is fed back with a controlled time delay, as opposed to the position and acceleration of the earlier studied translational vibration cases, some interesting distinctions of this control law are highlighted. Analytical and experimental findings are presented to show how the method of DR absorption can be adapted on an electric drive setting. The stability analysis is also reviewed for the entire system, including the DR absorber and the original oscillatory structure. Encouraging agreement between analytical and experimental findings are reported.