基于DSP的自适应管道有源消声器设计与实现  

DSP Based Design and Implementation of Adaptive Active Silencer in Duct

作　　者：于华民[1] 朱海潮[1] 施引[1] 

机构地区：[1]武汉海军工程大学动力工程学院,湖北武汉430033

出　　处：《测控技术》2003年第4期63-64,66,共3页Measurement & Control Technology

摘　　要：有源消声技术对降低低频噪声有极大的优势 ,但实际应用的例子很少。本文设计了一种有源消声器 ,简要介绍了基于DSP芯片TMS32 0C30控制器的结构 ,用TMS32 0C30汇编语言实现自适应Filter U算法并给出了程序框图。在一电机、风机、管路系统上进行实时有源消声实验 ,结果证实了系统是有效的。Active noise control (ANC) technology has more advantages over passive noise control especially at low frequency noise attenuation,however there are few the practical applications.An active silencer is designed and the construction of controller based on DSP TMS320C30 chip is introduced,the adaptive Filter U controlling algorithm is implemented using TMS320C30 assembler language,the soft program flow diagram is also presented. The real time ANC experiments on a electromotor,fan and duct system have been implemented and the results show that the active silencer is effective.

关 键 词：有源消声器 设计 DSP 噪声控制 自适应控制算法 管道 

分 类 号：TB535.2[理学—物理] TP273.2[理学—声学]