Method for analyzing correlation between vibration data and process parameters of main pump

The invention relates to the field of mechanical equipment state monitoring and fault diagnosis, in particular to a correlation analysis method for main pump vibration data and process parameters. At present, a correlation analysis method based on a traditional Pearson's correlation coefficient only reflects the linear relation between two random variables, but in practical application, most variables belong to a non-linear relation, so that the traditional correlation analysis method is useless. Therefore, the nonlinear correlation analysis method is particularly important in analysis of state monitoring data. The method mainly comprises the following steps: step 1, determining an associated process parameter set; 2, selecting analysis parameters; 3, preprocessing the analysis data; 4, calculating a correlation coefficient; and 5, sorting the relevance. According to the method, the correlation coefficient between the vibration state and the technological parameters is calculated, the technological parameter