Ball Screw Fault Detection and Location Based on Outlier and Instantaneous Rotational Frequency Estimation

Table 4

Fault location results.

		The first fault		The second fault
		Location (mm)		Location (mm)
	Real	90		160
Proposed method	Exp1	84	6.67	171	6.88
	Exp2	79	12.22	178	11.25
	Exp3	97	7.78	177	10.62
CWT based method	Exp1	81	10.00	186	16.25
	Exp2	75	16.67	194	21.25
	Exp2	101	12.22	185	15.62