CAJ | 학술논문

作为5．5m×4m 大型低速航空声学风洞的重要组成部分，声学测量系统主要用于准确识别试验模型气动噪声产生的区域，同时完成不同条件下的风洞背景噪声测试。根据国内外声学测量技术的现状，结合气动声学试验的特殊要求，研制了一套高性能的声学测量系统，用于完成气动噪声源定位和风洞背景噪声的准确测量。试验结果表明，该测量系统能够满足风洞声学试验的测试要求。分布式测试结构提高了系统的可靠性和信噪比；即插即用测试技术的应用有效减少了系统的搭建、配置和编程工作，提高了系统的灵活性和可配置性；多线程并行处理算法的设计和 TDMS 技术的使用实现了153．6MB／s 的数据实时流盘，同时构建的分组存储技术为海量数据的有序存储和快速检索提供了保证。
작위5．5m×4m 대형저속항공성학풍동적중요조성부분，성학측량계통주요용우준학식별시험모형기동조성산생적구역，동시완성불동조건하적풍동배경조성측시。근거국내외성학측량기술적현상，결합기동성학시험적특수요구，연제료일투고성능적성학측량계통，용우완성기동조성원정위화풍동배경조성적준학측량。시험결과표명，해측량계통능구만족풍동성학시험적측시요구。분포식측시결구제고료계통적가고성화신조비；즉삽즉용측시기술적응용유효감소료계통적탑건、배치화편정공작，제고료계통적령활성화가배치성；다선정병행처리산법적설계화 TDMS 기술적사용실현료153．6MB／s 적수거실시류반，동시구건적분조존저기술위해량수거적유서존저화쾌속검색제공료보증。
The acoustic measurement system is an important component of the in 5.5m×4m large-scale low-speed aeroacoustic wind tunnel,which is mainly used to accurately identify the ar-ea upon the test model where the aerodynamic noise is generated and measure the background noise of the wind tunnel under different conditions.According to the current status of the acous-tic measurement technology at home and abroad,combined with the specific requirements of aeroacoustics test,a high performance acoustic measurement system has been developed to per-form accurate measurement of aerodynamic noise source location and wind tunnel background noise.Test results show that the measurement system can meet the test requirements in the acoustic wind tunnel.Distributed structure greatly improves the reliability and SNR of the sys-tem.Plug and play technique effectively reduces the construction,configuration and programming work to improve the flexibility and configurability of the system.Multi-threaded parallel processing algo-rithm and TDMS technology can realize the real-time streaming data up to 153.6MB/s,and the packet storage technology provides a guarantee for the orderly storage and fast retrieval of massive data.