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首页> 外文期刊>Advances in Mechanical Engineering >Evaluation of gas turbine diagnostic techniques under variable fault conditions:
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Evaluation of gas turbine diagnostic techniques under variable fault conditions:

机译:在可变故障条件下评估燃气轮机诊断技术:

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The aim of this study is to evaluate gas path diagnostic techniques using a principle of variable structure classification applied to cover possible fault scenarios in gas turbine maintenance. This principle allows creating more versatile and realistic fault conditions relative to existing studies such as complex fault classifications, a new boundary for fault severity, and real deviation errors. The techniques analyzed are included into a special procedure that repeats a diagnostic process many times and computes for each fault class a probability of correct diagnosis. Using this probability averaged for all the classes as the evaluation criterion, the techniques are tested under the conditions of four comparative studies. The results show that (a) there is no single technique significantly outperforming all others over the full range of diagnostic conditions even if engine operating modes, fault simulation data, fault classifications, multiple-class boundaries or the scheme of deviation errors are varie...
机译:这项研究的目的是使用可变结构分类原则评估气路诊断技术,该原则适用于覆盖燃气轮机维护中可能出现的故障情况。相对于现有研究,例如复杂的故障分类,故障严重性的新边界和实际偏差误差,该原理允许创建更通用,更实际的故障条件。所分析的技术包含在一个特殊的过程中,该过程重复了多次诊断过程,并为每个故障类别计算出正确诊断的概率。使用所有类别的平均概率作为评估标准,在四项比较研究的条件下对这些技术进行了测试。结果表明(a)在发动机的整个诊断条件范围内,即使发动机的工作模式,故障模拟数据,故障分类,多类边界或偏差误差方案是多种多样的,也没有一种技术能明显胜过所有其他技术。 。

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