In the work of Schandl a centralized vibration control scheme of a state-feedback controller together with an LQ-designed observer has been proposed first.
Twelve piezo-stack actuators mounted in consoles together with collocated sensor
patches comprise the control system for attenuating the spatial eigenmodes of the structure.
In a realistic simulation of a high-order finite-element (FE) model together with multi-body simulation of the bogies and nonlinear wheel-rail interaction forces,
the effectiveness of the proposed concept was demonstrated. It was also shown that modeling errors, a complete failure, as well as a worst-case malfunction of the control system do not affect the safety against derailment.