Beschreibung:
<jats:p>The feasibility of active noise and vibration control (ANVC) of the low-frequency interior noise (around 100 Hz in the case presented) of a high-speed railcar is studied. The car chosen for this study is the first generation of the German Intercity Express (ICE) trains. Based on the design of the car, the bogie, and the bogie/car body interface, an active control system combining some aspects of active vibration isolation and active structural acoustic control was proposed and studied by model experiments and simulations [Schirmacher et al., Proc. Active 97, 557–564]. Based on these results, an active system with four actuators fitting into the secondary suspension was installed at one bogie, and the whole railcar was tested at the rolling rig of Deutsche Bahn in Munich. Test drives on the rig cover speeds up to 250 km/h with and without railway line track simulation. For wheel harmonics in the critical frequency range, global sound-level reductions of more than 12 dB have been achieved in the whole passenger compartment, with peaks of more than 20 dB at single passenger seats. For dominant wheel harmonics, global reductions of 6–8 dB can be expected, averaged over the whole passenger compartment. </jats:p>