汽车空调噪声有源控制的参考传感器布放研究  

Study on the Peference Sensor Distribution for the Active Noise Control of Automotive HVAC System

作　　者：蔺代永 向阳辉 聂永红 庞小兵 张干清 LIN Dai-yong;XIANG Yang-hui;NIE Yong-hong;PANG Xiao-bing;ZHANG Gan-qing(Department of Mechanical and Electrical Engineering,Changsha University,Changsha 410022)

机构地区：[1]长沙学院机电工程学院,长沙410022

出　　处：《现代制造技术与装备》2018年第8期44-46,共3页Modern Manufacturing Technology and Equipment

基　　金：湖南省自然科学基金项目(2015JJ2015);校人才引进科研基金(SF1305);湖南省"十三五"重点建设学科资助项目;湖南省教育厅资助科研项目(13C1083;15C0122)

摘　　要：采用有源噪声控制方法来降低汽车内部噪声时,为使参考信号与汽车暖通空调系统噪声之间具有较好的相关性,针对暖通空调系统参考传感器的布放进行研究。分别选取暖通空调系统上六个不同位置点的加速度作为参考信号,并采用滤波-X LMS算法对有源控制系统的噪声控制效果进行仿真和对比。结果表明,当加速度计布置在空调系统的左端面或左上出风口附近时,控制系统能在392Hz和450~550Hz的频率范围内分别取得12d B和5d B的降噪量。因此,合理选择控制系统参考传感器的布放位置,能够更有效地降低暖通空调系统的低频噪声水平。The distribution of reference sensors for Heating, Ventilation and Air Conditioning（HVAC） system is studied in order to ensure a good correlation between the reference signal and HVAC system noise while the active noise control is used to reduce the noise level inside the automotive. The effects of active noise control are simulated by using Filtered-X LMS algorithm and compared among the six cases using the acceleration of different positions on HVAC system as the reference signals. The results show that the control system can reduce the noise by 12 d B and 5 d B at the frequencies of 392 Hz and 450~550 Hz respectively while the accelerometer is located on the left end surface or near the upper left air outlet of HVAC system. Therefore, the reasonable arrangement of reference sensor for the active noise control system can reduce the low-frequency noise of HVAC system more effectively.

关 键 词：汽车空调 有源噪声控制 参考传感器 滤波-X LMS算法 

分 类 号：U463.851[机械工程—车辆工程]