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

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.