Active Control of Simulated Structure Borne Road Noise Using Force Actuators

A new approach to the reduction of structure borne road noise inside car cabins is developed and verified experimentally. The experiments have been performed on a mid-size station wagon, in laboratory conditions with one wheel excitation. In the frequency range from 100 to 150 Hz, more than 10 dB noise reduction has been achieved using control forces applied to the car body. For maximum noise reduction the control configuration had to be tuned carefully to satisfy the causality constraints for the reduction of broadband disturbances.