Health status evaluation of aluminum reduction cell based on set pair analysis and evidence theory
In order to evaluate the health status of aluminum reduction cell timely and accurately,a health status evaluation method of aluminum reduction cell based on set pair analysis and evidence theory was proposed.Firstly,the evaluation index system of health status of alumium reduction cell was estab-lished.Then the fuzzy analytic hierarchy process and entropy weight method were used to determine the subjective and objective weights of each index,the game theory and variable weight theory were used to determine the combined weight and variable weight of each index.Then,the set pair analysis method was used to determine the degree of connection between each index and each status level,and the evidence theory was used to synthesize the degree of connection of each index.Finally,the maximum membership degree principle and the reliability criterion were used to determine the health status level of the reduction cell.
aluminum reduction cellstatus evaluationvariable weightset pair analysisevidence theory