Two-Stage Degradation Assessment and Prediction Method for Aircraft Engine Based on Data Fusion

Table 1

Summary of previous works related to CMAPSS.

Type	Method	Purpose	Reference
Statistical-based	KNN + Bayesian filter	RUL prediction	Mosallam et al. [30]
	Entropy-based	Condition monitoring and prognostics	Liu et al. [31]
	Signal fusion + stochastic degradation model	RUL prediction	Wen et al. [32]
Machine learning	PSO + SVM	RUL prediction	García Nieto et al. [15]
	ARIMA+SVM	RUL prediction	Ordóñez et al. [16]
	LR + OS-ELM	Degradation prognostics	Lu et al. [18]
Deep learning	Deep RNN	Degradation prognostics	Behera, Misra, and Sillitti [33]
	LSTM+GMM	RUL prediction	Sayah et al. [34]
	Bidirectional handshaking LSTM	RUL prediction	Elsheikh, Yacout, and Ouali [35]
	MLE + CCF	Predictive maintenance	Pillai and Vadakkepat [36]