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Study on Vibration Characteristics of Natural Gas Pipeline Explosion Based on Improved MP-WVD Algorithm

机译：基于改进MP-WVD算法的天然气管道爆炸振动特性研究

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In order to meet the requirement of precise analysis of nature gas pipeline explosion, authors combined MP algorithm and WVD distribution to improve the time-frequency resolution and to solve the problem of cross-terms interference. The HHT algorithm was applied to the data preprocessing of MP algorithm to reduce the computational complexity of the MP algorithm. It improved the computing efficiency and laid the foundation for big data analysis. In this paper, authors carried out a full-size pipeline explosion experiment at the CNPC pipeline fracture control State Key Laboratory. Advantages of the improved MP-WVD algorithm were taken to obtain the time-frequency distribution characteristics of the pipeline explosion vibration. The research provided a new algorithm for the time-frequency distribution of nonstationary random vibration, and the result provided a reference for the safe operation and construction of natural gas pipeline.
机译：为了满足对天然气管道爆炸事故进行精确分析的要求，作者结合MP算法和WVD分布，提高了时频分辨率，解决了交叉项干扰问题。将HHT算法应用于MP算法的数据预处理，以降低MP算法的计算复杂度。它提高了计算效率，为大数据分析奠定了基础。本文作者在中石油管道断裂控制国家重点实验室进行了一次大型管道爆炸试验。利用改进的MP-WVD算法获得管道爆炸振动的时频分布特征。该研究为非平稳随机振动的时频分布提供了一种新的算法，为天然气管道的安全运行和施工提供了参考。

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