A method for analyzing and diagnosing the state of a system having a plurality of variables, and an information processing device using the method.

摘要

PROBLEM TO BE SOLVED: To accurately determine whether a system is normal or abnormal by treating these variables as complex numbers and observing the relationship between these complex numbers when each variable obtained from the system has a two-dimensional distribution. It is an object of the present invention to provide a state analysis diagnosis method of a system having a plurality of variables, which can be diagnosed, and an information processing apparatus using the method. SOLUTION: The information processing apparatus 1 used for the state analysis diagnosis method of a system having a plurality of variables, when the plurality of variables each have a two-dimensional distribution, the value of each variable in the X-axis direction. Is regarded as a complex number with the real part and the value in the Y-axis direction of each variable as the imaginary part, the complex correlation coefficient between the plurality of variables is calculated, the calculated complex correlation coefficient is represented by a matrix, and the complex phase is expressed. The complex maharanobis distance is calculated using the inverse matrix of the relational number matrix, and the control means 11 for diagnosing the normality or abnormality of the system based on the calculated value of the complex maharanobis distance is provided. [Selection diagram] FIG. 15