船用柴油机工作过程故障诊断的仿真研究

利用计算机数值计算方法进行了船用柴油机性能故障的仿真计算，通过对各故障下热工参数的特征分析，揭示了热工参数在不同性能故障、不同运行工况和不同航行工况下变化规律，探讨了热工特征参数的优化选择、性能故障的分类和计算机仿真建模等问题，提出了热工参数的相对偏差分析法，并介绍了人工神经网络在船用柴油机故障诊断中的具体应用。

Simulative Study on Diagnosis Mechanism of Marine Diesel Engine Performance Faults

This paper introduces the simulative calculation of marine diesel engine with numerical method. By characteristic analysis on simulated results this paper reveals the regularities of thermodynamic parameters under different faults, different running conditions and different navigating conditions, discusses the problems of symptomatic parameters′ optimal selection, performance faults′ classification and computer simulative modeling. A relative deviation analyzing method is proposed and the application of this method with artificial neural network in marine diesel engine fault diagnosis is introduced.