CAJ | 학술논문

本文结合时-频域信号处理方法，在对冲击信号进行连续小波变换（CWT ）的基础上，采用计算信号Hilbert包络线极大值的方法确定冲击信号的到达时间，并应用于网格定位。研究结果表明，该方法具有较高的定位精度，对小质量的松动部件能准确地定位其位置，且具有较好的抗噪能力。
본문결합시-빈역신호처리방법，재대충격신호진행련속소파변환（CWT ）적기출상，채용계산신호Hilbert포락선겁대치적방법학정충격신호적도체시간，병응용우망격정위。연구결과표명，해방법구유교고적정위정도，대소질량적송동부건능준학지정위기위치，차구유교호적항조능력。
In this paper ,combined with time-frequency analysis ,the impact signal arri-val time was determined by the method of calculating the Hilbert envelope maximum based on the analysis of impact signal by continuous wavelet transform (CWT ) ,and it was applied to grid localization . The results show that this method has strong anti-interference capacity and high locating accuracy ,and for the small mass loose parts it also can accurately locate their position .