The present application relates to a thrust bearing full-life fault diagnosis method and system based on film thickness and wear. The method comprises: first establishing failure probability models for two stages, i.e., a lubrication failure stage and a wear failure stage, and simultaneously representing a lubrication state and a wear state of a bearing in the form of probabilities; then, performing a normal distribution test on monitoring data, and performing normal distribution conversion on abnormal distribution data; and finally, by using the established failure probability models for the two stages, i.e., the lubrication failure stage and the wear failure stage, and the acquired normal distribution data, performing diagnosis on the lubrication state and the wear state of the bearing on the basis of a 3σ criterion, thereby realizing full-life fault monitoring. In the present invention, failure evolution situations of two stages, i.e., a lubrication stage and a wear stage, of a thrust bearing are represented in the form of probabilities, so as to realize the full-life fault diagnosis of the thrust bearing, thereby addressing the current gap in research on dynamic fault diagnosis throughout the full-life cycle of thrust bearings, and improving the accuracy of fault early warning and condition-based maintenance of the thrust bearings under actual working conditions.
- 출원번호 : CN2024/116777
- 출원인 : CHINA NUCLEAR POWER ENGINEERING CO., LTD.;SUZHOU VEIZU EQUIPMENT DIAGNOSIS TECHNOLOGY CO., LTD.;
- 특허번호 :
- IPC : G06F-018/2415(2023.01);G01M-013/04(2019.01);
