A method for constructing complex symptoms of analog temporal logic of an expert system

The invention relates to a method for constructing complex symptoms of analog temporal logic of an expert system, which is applied to express dynamic characteristics of a system in a rule-based expertsystem knowledge base. According to the data symptom table, the basic symptom of the system state data is obtained by matching, each symptom represents a kind of state of the data; if the start timeis satisfied and the end time is not satisfied, whether the judgment condition of the complex symptom is satisfied is judged, and if so, the complex symptom is outputted to the expert system inferenceengine. Aiming at the problem that the traditional expert system knowledge base is insufficient to express the dynamic characteristics of the system, the invention adds a dynamic knowledge mode to the expert system knowledge base, expands the dimension of the knowledge base, and enhances the expression ability of the expert system knowledge base to the human expert knowledge. Complex symptoms aredesigned to describe the ch