Method for tracing uncertainty of technical performance of engineering machinery

The invention relates to a method for tracing uncertainty of technical performance of engineering machinery. The engineering machinery technical performance uncertainty tracing method comprises the following steps: processing engineering machinery technical performance data to obtain a sample data sequence; solving the information entropy value of each data sequence, and summarizing and summing the system entropy value; analyzing and extracting a common condition factor of each uncertainty index, and calculating an information condition entropy and a system entropy value of each technical performance index under a single common condition factor; solving the information gain of the system under each common condition factor, and determining the main source of the uncertainty of the engineering mechanical performance. According to the scheme provided by the invention, the information gain of the system under each common condition factor can be solved through the use data of the engineering machinery, the main so