A Novel Method for Diagnosis of Broken Bars Based on Optimum Resolution of Prescient Direction Algorithm

Table 3

Parameter estimation results of the faulty machine with different load levels using FFT, MUSIC, and ORPD algorithms.

Speed (r/min)	Characteristic component	Reference value	Estimated value
			FFT	MUSIC	ORPD
1484		49	—	—	49.13
		0.021	—	—	0.017
		51	—	—	51.07
		0.016	—	—	0.012
1482		48.8	—	—	48.88
		0.028	—	—	0.025
		51.2	—	—	51.23
		0.020	—	—	0.020
1479		48.6	—	48.60	48.57
		0.044	—	0.045	0.044
		51.4	—	51.53	51.44
		0.038	—	0.035	0.036
1460		47.4	47.51	47.33	47.44
		0.102	0.108	0.108	0.107
		52.6	54.24	52.62	52.50
		0.087	0.099	0.090	0.091
1440		46.0	46.11	46.02	45.99
		0.123	0.113	0.120	0.121
		54.0	53.89	53.98	54.01
		0.101	0.107	0.105	0.105