Gas Turbine Model-Based Robust Fault Detection Using a Forward – Backward Test

Author(s):  
Alexandru Stancu ◽  
Vicenç Puig ◽  
Joseba Quevedo
Author(s):  
Jinglu Hu ◽  
◽  
Kotaro Hirasawa ◽  
Kousuke Kumamaru ◽  

This paper proposes a neurofuzzy approach to fault detection in linear systems. The system diagnosed is described by using a neurofuzzy model called LimNet that consists of a linear model and multiple local linear models with interpolation of a "fuzzy basis function". Fault detection is considered in two cases: when faults occur in the linear model part, a KDI-based robust fault detection is applied, where a multi-local-model part is treated as error due to nonlinear undermodeling; when faults occur in the multi-local-model part, a multi-model based fault detection method is developed, in which the identified LimNet is interpreted as several local ARMAX models, and KDI is used as an index to discriminate between each local model and its reference. This paper mainly concentrates discussions on multi-model based fault detection.


2017 ◽  
Vol 29 (3) ◽  
pp. 244-252 ◽  
Author(s):  
Moazzam Nazir ◽  
Abdul Qayyum Khan ◽  
Ghulam Mustafa ◽  
Muhammad Abid

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