坐底式深水网箱振动实测信号分析处理方法  

Analysis and Processing Method of Vibration Measured Signal of Bottom-deep-water Cage

作　　者：宋嘎[1] 王娜娜[2] SONG Ga;WANG Na-na(Shandong Polytechnic, Jinan 250104, China;Yantai Automobile Engineering Professional College, Yantai Shandong 264000, China)

机构地区：[1]山东职业学院,济南250104 [2]烟台汽车工程职业学院,山东烟台264000

出　　处：《船海工程》2020年第3期117-120,共4页Ship & Ocean Engineering

基　　金：山东省职业教育技艺技能传承创新平台资助项目(201835)。

摘　　要：为提高变分模态分解的精度,通过引入相关性分析及频域最大值分析,对模态阶次进行自适应调整,改善变分模态分解算法的性能。利用改进的方法对坐底式深水网箱的实测数据进行分析。结果表明,此方法可以自适应对测试信号进行分解,分解精度较高,适合于对坐底式深水网箱结构进行安全监测。In order to improve the accuracy of variation mode decomposition,correlation analysis and maximum analysis in frequency domain were introduced.By these,the proposed method can adaptively adjust the modal order to improve the performance of the decomposition algorithm.The proposed method was used to analyze the measured signals from a bottom-deep-water cage.The analysis results showed that the method can decompose the measured signals adaptively and has high decomposition precision.It is suitable for the safety monitoring of bottom-deep-water cage.

关 键 词：变分模态分解 模态阶次 相关性分析 频域最大值分析 深水网箱 

分 类 号：U661.44[交通运输工程—船舶及航道工程] P751[交通运输工程—船舶与海洋工程]