可变模态分解算法及其在天然气管道泄漏检测中的应用

摘要

对可变模态分解算法在天然气管道泄漏信号检测中的应用做了研究。通过对其噪声鲁棒性、过度分解和不饱和分解特性的分析，并与经验模态分解和小波分解进行对比，证明可变模态分解算法在天然气管道泄漏信号检测与分析方面的可行性和有效性，并且可变模态分解具有更好的噪声鲁棒性和泄漏信号检测效果。%The application of variational mode decomposition (VMD)algorithm in the leakage signal detection of natural gas pipeline was investigated.Analyzing the noise robustness,over-decomposition and the unsaturat-ed decomposition and then comparing the results to that of empirical mode decomposition (EMD)and wavelet decomposition can prove VMD algorithm ’s feasibility and effectiveness in detecting and analyzing pipeline leakage signals,and VMD has better noise robustness and better effect in leakage signal detection.