Active wind noise hybrid control in motorcycle helmets

Acoustical Science and Technology

Ariel Velis¹  Demián García Violini²  Ricardo S. Sánchez-Peña²  Carlos Posse¹ 

[1] Acoustics and Lighting Laboratory (LAL);Buenos Aires Institute of Technology (Instituto Tecnológico de Buenos Aires)

关键词: Motorcycle helmets;    Active noise control;    H-infinity optimal control;    Feedforward control;    Hybrid control;   

DOI  :  10.1250/ast.37.21

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(31)In this work, three experiments are conducted. In a realistic environment (freeway), a database for the noise dynamics versus velocity in a motorcycle helmet is computed. Next, under the controlled conditions of an anechoic chamber, the models for the feedback (FB) and feedforward (FF) paths in the helmet are obtained by a filtering and identification process. Finally, in the same chamber, a hybrid (FB+FF) robust controller is tested against the actual noise measured in the freeway, and it achieves attenuations between 20 and 30 dB.

【 授权许可】

Unknown