基于离散平稳小波变换的原油触变特性研究  

Research on crude oil thixotropy based on discrete stationary wavelet transform

作　　者：蔡均猛[1] 易维明[2] 何芳[2] 姚福生[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093 [2]山东理工大学山东省清洁能源工程技术研究中心,山东淄博255049

出　　处：《水动力学研究与进展（A辑）》2005年第6期683-688,共6页Chinese Journal of Hydrodynamics

摘　　要：首次将离散平稳小波变换用于实验测定的原油触变信号的去噪,并与五点三次平滑处理及离散正交小波变换的去噪结果进行比较;实验结果表明:离散平稳小波变换明显优于其他滤波方法。对经离散平稳小波变换去噪后的触变数据分析的基础上,提出采用一种新型四参数双曲触变模型。该模型物理意义明确,拟合精度高,可用于工程实践。For the first time, the discrete stationary wavelet transform （DSWT） was used to de-noise the crude oil thixotropy signal and compared with the result of 5.3th power smoothing and the discrete orthogonal wavelet transform. The experimental results show that the filtering effect using DSWT is obviously better than other filtering methods. Based on the analysis of crude oil thixotropy data de-noised by DSWT, a novel four-parameter hyperbolic thixotropy model was put forward. The model has clear physical meaning, high fitting accuracy and can be used in engineering practice.

关 键 词：离散平稳小波变换 触变特性 原油 消噪 

分 类 号：TE81[石油与天然气工程—油气储运工程]