On-Line Outlier Judgement, Deterioration Prediction and Residual Life Evaluation for Condition Based Maintenance

抄録

A method of on-line residual life estimation is proposed for condition based maintenance of industrial equipment. With on-line monitoring of the condition of the equipment, the residual life is estimated by using on-line prediction of the equipment deterioration. The deterioration prediction is based on the on-line identification of the mathematical model of deterioration. To improve the accuracy of the deterioration prediction, outlier elimination technique is adopted in the on-line identification algorithm. Simulation study was carried out in order to assure the effectiveness of the proposed on-line residual life estimation method. The proposed method was also applied to actual data of rotating equipment in a thermal power plant and an appropriate residual life estimation result was obtained.