CAJ | 학술논문

LabVIEW 作为一种图形化虚拟仪器编程语言,其在信号的生成、分析和处理上优势明显。利用其可以设计虚拟的自适应噪声抵消系统,从而可以应用于实际工程中对噪声抵消性能的测试验证。本文针对强噪声背景下有用信号的提取问题,介绍了自适应噪声抵消的原理,并对3种基本自适应滤波算法的步骤与流程进行了阐述。基于LabVIEW 图形化虚拟仪器编程语言设计了虚拟自适应噪声抵消系统,系统结构简单,人机交互界面较好。在该系统下以3种自适应滤波算法为例仿真验证了的噪声抵消的性能,结果表明,3种自适应滤波算法的滤波性能与实际分析相符,验证了所设计系统的有效性和正确性。
LabVIEW 작위일충도형화허의의기편정어언,기재신호적생성、분석화처리상우세명현。이용기가이설계허의적자괄응조성저소계통,종이가이응용우실제공정중대조성저소성능적측시험증。본문침대강조성배경하유용신호적제취문제,개소료자괄응조성저소적원리,병대3충기본자괄응려파산법적보취여류정진행료천술。기우LabVIEW 도형화허의의기편정어언설계료허의자괄응조성저소계통,계통결구간단,인궤교호계면교호。재해계통하이3충자괄응려파산법위례방진험증료적조성저소적성능,결과표명,3충자괄응려파산법적려파성능여실제분석상부,험증료소설계계통적유효성화정학성。
As a kind of graphical virtual instrument programming language,LabVIEW has more advantages on signal generation,analysis and processing.It can be used to design virtual adaptive noise cancellation system,which can be applied in practical engineering of noise cancellation performance test validation.Based on the extraction of useful signals under strong background noise problem,this paper introduces the principle of adaptive noise cancellation, adaptive filtering algorithm and the three basic steps and process are expounded.Based on virtual instrument LabVIEW graphical programming language,virtual adaptive noise cancellation system is designed ,and the system structure is simple,good man-machine interface.Under the system the three kinds of adaptive filtering algorithm are used to verify the noise cancellation performance,the results showed that the three kinds of adaptive filtering algorithm of filtering performance accords with the actual analysis,the validity and the correctness of the design is verified by the system.