航空发动机噪声测试系统设计  

Design of Aero Engine Noise Test System

作　　者：刘勇 

机构地区：[1]成都天奥测控技术有限公司,四川成都611731

出　　处：《科技与创新》2015年第24期110-111,共2页Science and Technology & Innovation

摘　　要：航空发动机噪声测量、分析对发动机故障诊断和分析具有很重要的意义。采用驻极体自由场型传声器将发动机噪声转换为电信号,经过调理、放大,然后采用基于PXI总线技术的虚拟仪器采集信号,最后使用高性能的计算机系统对采集到的数据进行分析处理,为航空发动机的测试和故障诊断提供数据支撑。航空发动机噪声测试系统能够准确地采集、存储和分析发动机运行中的噪声信号。Noise measurement and analysis of aero engine is very important for engine fault diagnosis and analysis. The electret free field microphone will engine noise conversion into electrical signals, after conditioning, amplification, then the acquisition virtual instrument signal based on PXI bus technology. Finally, we use the high performance computer system to analyze and process the collected data, to air the motivation for the testing and fault diagnosis provides data support. Aircraft engine noise testing system can accurately collect, store and analyze the noise signal in engine operation.

关 键 词：航空发动机 噪声测试系统 噪声采集 PXI总线技术 

分 类 号：V263.4[航空宇航科学与技术—航空宇航制造工程]