柴油机故障表征体系的构建及优化方法研究

Diesel Engine State Feature System Establishment and Optimize Technique

针对柴油机状态评估与故障诊断难以得到合理的表征参数等问题,探讨了状态表征体系的构建方法。通过模拟试验测取柴油机活塞环不同状态的典型特征值,综合运用Bootstrap方法和遗传算法的寻优特性,得到状态表征的最佳参数组合。分析表明,提出的方法对于柴油机状态表征参数体系的构建简单有效。

To less the difficulties of getting the reasonable token feature for diesel engine state evaluation and fault diagnosis,this paper proposed the method of state feature system establishment technique.The signal of diesel engine had been collected when the piston ring and airtight ring working at different state,then with the Bootstrap method and Genetic Algorithm,an optimum parameter combination has been received.Example showed this method was simple and efficiency for the diesel engine state feature system established.