Dan O'Boy

senior lecturer in structural dynamics

Dan O’Boy is a senior lecturer in structural dynamics at Loughborough University. His interests include tire exterior noise generation, particularly of heavy electric vehicles, the interior design of vehicles and in particular the variability of frequency response functions for interior noise and vibration. His NVH interests range from tire and vehicle experience to active noise control and non-destructive evaluation via ultrasonic sensors. Collaborations include Jaguar Land Rover, Ford, Twi, Eddyfi and Mira. At Loughborough, he is part of a tire research team which has produced real-time models for terramechanics inclusion in driver-in-the-loop simulators.

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Presentation

Exterior noise reduction of tires using active control

Vehicle external noise is typically controlled through legislation, for example ISO 362. Future electric vehicles are relatively heavy and thus have wider tire width. As the tire noise is the dominant external noise from the vehicle, it is important to look at methods of reduction. Improvements in active noise control have been made for interior noise, which has an arguably simpler transmission path. The exterior noise, and in particular the lower-frequency modal response, is examined for active control implementation, using reference microphones and directional sound sources. Complications such as the horn amplification, random excitations and scattering are covered.