基于SPA的船用柴油机热工故障诊断研究

船用柴油机热工参数蕴含着大量的故障信息,外界干扰小,诊断范围广,具有很好的诊断价值。本文将集对分析应用到柴油机热工故障诊断当中,介绍了集对分析(SPA)的基本理论,在此基础上,建立了基于SPA的柴油机热工故障诊断模型。再利用4190型船用中速柴油机AVL BOOST工作过程仿真模型,进行故障仿真计算,提取了13类热工参数进行分析,获取了基准故障集和待检工作状态集,验证了模型的准确性；同时证明了集对分析在柴油机故障诊断中的可行性,为柴油机故障监测和诊断提供了新方法。

Research on Thermal Fault Diagnosis of Marine Diesel Engine Based on Set Pair Analysis

Thermal parameters contain lots of information of abnormal performance in marine diesel engine, which are very important for fault diagnosis; they can be used widely because they are hardly disturbed by the outside situation. The basic theory of set pair analysis is introduced in this paper which is applied to the thermal fault diagnosis of diesel engine, based on that, a thermal fault diagnosis model of diesel engine is established. Fault simulation calculation is carried out by using BOOST simulation model of 4190 type marine diesel engine, and 13 kinds of thermal parameters are extracted, the standard fault set and the working state set are obtained, which verifies the accuracy of the model, at the same time, it is proves that there is feasibility to apply SPA to fault diagnosis of diesel engine, which provides a new way for fault monitoring and diagnosis of diesel engine.