Time-varying noise control in Motorcycle helmets

DEMIAN GARCÍA VIOLINI; RICARDO S. SÁNCHEZ PEÑA; ARIEL VELIS

acoustical science and technology

The Acoustical Society of Japan

Año: 2015 vol. 36

1347-5177

Here, the active noise control problem in motorcycle helmets is studied, which has an intrinsic time-varying behavior. In order to achieve the best possible noise attenuation, the noise source and its dynamic characteristics are computed through an experimental identification process. Also, in a robust control framework, the time-varying dynamics can be either coveredas dynamic uncertainty or treated as it is. Here a time-varying feedback (FB) controller is proposed, and compared with a robust linear time invariant (LTI) on. The LTI controller optimizes against the lack of knowledge of the model dynamics: H-infinity optimal control.