Fault Diagnosis of Electric Impact Drills Based on Time-Varying Loudness and Logistic Regression

Table 2

PAR of the time-varying loudness spectra of faulty EIDs.

Samples	PAR value	(Hz)	Samples	PAR value	(Hz)
1	3.1	171	6	3.75	160
2	2.89	184	7	3.9	170
3	2.37	184	8	2.98	162
4	3.38	168	9	2.33	195
5	2.7	160	10	3.01	168