Table 4.

Optimal penalty factors and modal components of acoustic-vibration signals.

Fault Mode	Vibration Signal		Acoustic Signal
	$\mathit{\alpha }$	K	$\mathit{\alpha }$	K
Normal	110	10	1316	6
Inner 1 mm	2104	10	1812	10
Inner 1.5 mm	1109	6	1887	6
Inner 2 mm	2427	9	1515	8
Outer 1 mm	2500	5	2469	6
Outer 1.5 mm	421	6	2336	5
Outer 2 mm	2372	10	2405	10
Roller 1 mm	2280	6	1188	6
Roller 1.5 mm	2271	10	869	10
Roller 2 mm	2491	10	2292	10