Active Noise Control of the Heavy Truck Interior Cab  

作　　者：李惠彬 刘海光 刘吉春 上官云飞 

机构地区：[1]School of Mechanical and Vehicular Engineering,Beijing Institute of Technology [2]Beijing Auman Heavy Motor Plant

出　　处：《Journal of Beijing Institute of Technology》2008年第4期400-404,共5页北京理工大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China (50875022);Research Foundation of Beijing Institute of Technology(20070342012)

摘　　要：In order to control the noise of the heavy truck interior cab effectively, the active noise control methods are employed. First, an interior noise field test for the heavy truck is performed, and frequencies of interior noise of this vehicle are analyzed. According to the spectrum analysis of acquired noise signal, it is found out that the main frequencies of interior noise are less than 800Hz. Then the least squares lattice （LSL） algorithm is used as signal processing algorithm of the controller and a closed-loop control DSP system, based on TMS 320VC5416, is developed. The residual signal at driver＇s ear is used as feedback signal. Lastly, the developed ANC system is loaded into the heavy truck cab, and controlling the noise at driver＇ s ear for that truck at different driving speeds is attempted. The noise control test results indicate that the cab interior noise is reduced averagely by 0.9 dBA at different driving speeds.In order to control the noise of the heavy truck interior cab effectively, the active noise control methods are employed. First, an interior noise field test for the heavy truck is performed, and frequencies of interior noise of this vehicle are analyzed. According to the spectrum analysis of acquired noise signal, it is found out that the main frequencies of interior noise are less than 800Hz. Then the least squares lattice （LSL） algorithm is used as signal processing algorithm of the controller and a closed-loop control DSP system, based on TMS 320VC5416, is developed. The residual signal at driver＇s ear is used as feedback signal. Lastly, the developed ANC system is loaded into the heavy truck cab, and controlling the noise at driver＇ s ear for that truck at different driving speeds is attempted. The noise control test results indicate that the cab interior noise is reduced averagely by 0.9 dBA at different driving speeds.

关 键 词：heavy truck cab interior noise LSL algorithm active noise control 

分 类 号：TN912.2[电子电信—通信与信息系统]