采用响度控制改进算法的封闭车厢主动消声  

Active loudness control of enclosed cabin noise by using improved algorithm

作　　者：姜顺明[1,2] 陈南[2] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]东南大学机械工程学院,南京211189

出　　处：《振动与冲击》2013年第5期167-170,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金(50975047);江苏省汽车工程重点实验室开放基金(QC201203);江苏大学高级人才基金(12JDG100)

摘　　要：以响度为噪声主动控制目标,提出逆模型结构和延迟补偿结构相结合的LFLMS改进算法。以轿车封闭车厢为载体构建双通道主动消声系统。以发动机噪声为噪声源,用三种控制算法进行试验,结果表明LFLMS改进算法与LFLMS算法的控制效果相近,且收敛速度快;响度控制声压减小不及声压控制,但响度减小量更大,主观听觉效果更好。The control objective of the active noise control （ANC） system was modified from minimizing sound pressure to minimizing loudness. The improved loudness-filtered least square mean （LFLMS） algorithm was derived based on linking the delay-compensated structure with the inverse-model structure. A double channel ANC system was installed in a passenger car cabin. Three algorithms were used to attenuate the engine noise in the cabin. The experimental results indicate that the improved LFLMS algorithm converges faster, and the loudness control can achieve better subjective effect than the sound pressure control in terms of loudness reduction.

关 键 词：主动消声 响度 车厢 主观 

分 类 号：TB535[理学—物理]