An extension evaluation model of the operation state of aero engine

Jian Chu¹, Guoyu Wang², Shan Xu³

¹Joint Laboratory of Information Sensing & Intelligent Control, Tianjin University of Technology and Education, Tianjin, 300222, China

²School of Mechanical Engineering, Tianjing University of Technology and Education, Tianjin, 300222, China

³Tianjin Bohai Vocational Technical College, No11 Juliansan Roda Hexi District Tianjin, 300221, China

Traditional fault diagnosis with single parameter fails to evaluate the operation state of aero engine. This paper analyzes the extension evaluation based on supervision information of engine’s performance and works out an evaluation system as well as an extension evaluation model and algorithm based on incidence function in extension theory. Through the model, parameters under the operation state of aero engine are studied. The incidence function in extension theory between classic domain and section domain of all attributes and parameters is established in the corresponding evaluation system. This makes it possible to acquire the state level of aero engine according to incidence in extension theory.