Performance Degradation Modeling And Health Assessment For Mechanical And Electrical Equipment Based On Wiener Process

Due to the complex mechanical and electrical equipment has the characteristics that complex structure, less samples, changeable degradation, preventive maintenance is difficult, so it has great significance to research the performance degradation rules and health status evaluation of the complex electromechanical equipment. In this paper, the research object is the mechanical and electrical equipment,using Wiener process to research the performance degradation modeling and health assessment methods. Main research contents:Firstly, describing the performance degradation process of equipment based on Wiener process. The definition, nature and characteristics of Wiener process are given, a Wiener process model is established to describe the single performance degradation, and put forward the Wiener process to the fusion of multi performance Wiener process,and the improved performance of Wiener process is presented to predict the performance degradation parameter in multi performance condition.Secondly, partition and evaluation method of equipment health status based on TOPSIS are proposed.Using TOPSIS method and Mahalanobis distance, the equipment health state space is divided by the relative closeness degree, and the performance degradation path is transformed into the healthy state space,finally realize the complex electromechanical equipment health condition assessment.Then the experiment was carried out on the test platform for feed system of CNC machine tools, so that the fusion of multi performance Wiener process analysis and the health state evaluation method were verified.Finally, summary and outlook of the full text.