摘要
排气系有源消声具有无功率损耗，减少有害排放的优越性。在研究了国内外已进行工作的基础上，配置了用声学元件、数字电路及微机组成的自适应闭环有源消声系统，采用Ｆｉｌｔｅｒｅｄ－ＸＬＭＳ算法形成软件。系统经实验证明。
Active Noise Control on exhaust systems has the advantage of no power waste and harmful exhaust reduction. On the basis of research done in China and othr countries an active closed-loop cancelling system is proposed using acoustic elements, digital circuits and microcomputer. Filtered-XLMS algorithm software for the system is designed. Experimental results indicare that noise attenuation is about 26 dB at typical frequences.
基金
国家外国专家局课题
关键词
排气
消声
噪声控制
有源消声
汽车
exhaust system
noise control
active cancelling system
