Stepwise Diagnosis for Rotating Machinery Using Force Identification Approach

Table 2

The severity of unbalance (Disk 1).

		Exact value	Identified value	Error
Case  1	unbalance [g·mm]	12.0	13.7	1.7
	angle [deg.]	0	−15.9	−15.9
Case  2	unbalance [g·mm]	12.0	14.1	2.1
	angle [deg.]	45	33.1	−12.0
Case  3	unbalance [g·mm]	12.0	14.0	2.0
	angle [deg.]	90	77.0	−13.0
Case  4	unbalance [g·mm]	12.0	12.9	0.9
	angle [deg.]	135	120.9	−14.1
Case  5	unbalance [g·mm]	12.0	11.5	−0.5
	angle [deg.]	180	164.9	−15.1
Case  6	unbalance [g·mm]	12.0	11.7	−0.3
	angle [deg.]	225	204.4	−20.6
Case  7	unbalance [g·mm]	12.0	12.5	0.5
	angle [deg.]	270	244.0	−26.0
Case  8	unbalance [g·mm]	12.0	12.5	0.5
	angle [deg.]	315	300.8	−14.2