矩形空腔噪声主动控制的研究  

Research on Active Noise Control of Rectangular Cavity

作　　者：韩国华[1] 靳晓雄[1] 侯艳芳[1] 袁卫平[2] 

机构地区：[1]同济大学汽车学院,上海201804 [2]上海内燃机研究所,上海200438

出　　处：《内燃机工程》2012年第1期76-80,共5页Chinese Internal Combustion Engine Engineering

摘　　要：以压电陶瓷为执行元件,采用以控制噪声为目标,直接控制板件振动来控制空腔噪声的主动控制技术路线,将神经网络控制技术与自适应技术相结合,用于矩形空腔模型噪声主动控制系统中。采用同位配置和结构模态声辐射效率,进行传感器和作动器的位置布置。试验取得了较好的降噪效果,为多通道噪声主动控制理论在汽车等矩形空腔模型上应用提供了有益的探索和参考。Taking piezoelectric ceramic as executive component, an active-control approach i. e. directly controlling the plate vibration for control of the cavity noise was adopted, and applied neural net control tech- nology, combined with adaptive technology, into the active noise control system of rectangular cavity. The collocated arrangement of sensors and actuators was adopted. Experiments demonstrate that this design has good noise-reduction effect. These fruits are useful for application of the multichannel active noise control theory in rectangular cavity, such as vehicle.

关 键 词：内燃机 空腔噪声 神经网络控制 压电陶瓷 主动控制 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程]