Phase Space Similarity as a Signature for Rolling Bearing Fault Diagnosis and Remaining Useful Life Estimation

Table 3

Comparison of RUL estimation.

Outer race	RMS	6.0578	8.5576	5.1652
	Original signal	1.5323	2.0537	1.0665
	Phase space	1.3226	1.9092	0.8540
Inner race	RMS	10.8441	12.5821	8.2846
	Original signal	4.1250	5.4658	3.0780
	Phase space	3.6250	4.8606	2.7941
Ball	RMS	8.5964	10.2489	7.0659
	Original signal	3.1875	4.1155	2.4702
	Phase space	3	3.7583	2.3632