基于LabVIEW的材料法向吸声系数测量实验系统的研制.PDF

32 !测控技术∀2010年第 29卷第 10期 基于 LabV IEW 的材料法向吸声系数 测量实验系统的研制 , , , , ( , 100048) : 采用双传声器传递函数法, 运用 N I声振信号采集系统及 LabV IEW 软件, 完成了材料法向吸声系 数测量软硬件系统的研制, 实现了测量管道设计信号采集系统确定及分析程序的开发工作, 应用本系 统对海绵吸声材料样品进行了实验测量, 验证了系统的有效性 : LabV IEW; 法向吸声系数; 传递函数法 : TB95 : A : 1000- 8829( 2010) 10- 0032- 03 D evelopm ent for the M easurem ent System of the M aterial Sound Norm al Absorption Coefficient Based on L abV IEW FENG T a , L IU B in, WANG Jing, WU Xue, ZHANG L i ( C llege fM echan ical Engineering, Beijing T echn l gy and Bus iness University, Beijing 100048, Ch ina) Abstract A cc rd ing t themeth d f tw m icr ph ne transfer functi n, themeasurem ent system f thematerial n rmal abs rpti n c efficient is devel ped based n the N I signal acquisiti n system and LabV IEW s ftw are. The design f the measuring duct, decisi n f signal acqu isiti n system and devel pment f the analysis s ft w are are acc mplished. The s und abs rpti n material f sp nge is used t validate the result fr m the experi mentalmeasurement, w hich is c nfirmed that the expermi ental resu lt c incides basically w ith the ne fr m the trad iti nalm eth d. K ey w ord s LabV IEW; n rmal abs rpti n c efficient; transfer functi n meth d , , [ 3] : , N I [ 1] LabV IEW , , , , , [ 2] , , , ; , , 1 2 , 10~ 12 m , , , , , , 1 : 2010- 03- 23 : 北京市教委科技发展面上资助项目 (KM200710011008, KM201010011008) : 冯涛( 1969 ), 男, 上海市人, 副教授, 博士, 主要