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Component failure estimation with Unknown Input Observer: A physical approach

机译:使用未知输入观察器的组件故障估计:一种物理方法

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In the literature Unknown Input Observers for sensor and actuator failure estimation are widely developed. None of them concerns component fault estimation. These analytical approaches are based on state equation description and complex numerical calculation. The present paper deals with physical component failure estimation based on bond graph approach as power full methodology for dynamic modeling of multi-physical systems. The additional energy due to the component failure (clearly displayed in the model) is considered as unknown input. Furthermore, properties of this observer are based on the finite and infinite structures and are synthesized directly from the graphical model, which can be pointed out from physical, structural and causal properties of used graphical representation. The developed methodology is validated in real experimental hydraulic process allowing valve and tank leakage failure estimation.
机译:在文献中,广泛地开发了用于传感器和致动器故障估计的未知输入观测器。它们都与组件故障估计无关。这些分析方法基于状态方程描述和复杂的数值计算。本文将基于键合图方法的物理组件故障估计作为用于多物理系统动态建模的功能强大的方法。由于组件故障(在模型中清楚显示)而产生的额外能量被视为未知输入。此外,此观察者的属性基于有限和无限的结构,并且直接从图形模型进行综合,可以从使用的图形表示形式的物理,结构和因果属性中指出。所开发的方法在实际的实验液压过程中得到了验证,可以估算阀和油箱的泄漏故障。

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