Stepwise Diagnosis for Rotating Machinery Using Force Identification Approach

Table 1

The severity of unbalance.

		Exact value	Identified value	Error
Case  1	unbalance [g⋅mm]	12.0	12.9	0.9
	angle [deg.]	0	−9.9	−9.9
Case  2	unbalance [g⋅mm]	12.0	13.2	1.2
	angle [deg.]	45	45.4	0.4
Case  3	unbalance [g⋅mm]	12.0	13.2	1.2
	angle [deg.]	90	88.9	−1.1
Case  4	unbalance [g⋅mm]	12.0	13.2	1.2
	angle [deg.]	135	136.4	1.4
Case  5	unbalance [g⋅mm]	12.0	13.2	1.2
	angle [deg.]	180	179.9	−0.1
Case  6	unbalance [g⋅mm]	12.0	12.9	0.9
	angle [deg.]	225	227.4	2.4
Case  7	unbalance [g⋅mm]	12.0	12.6	0.6
	angle [deg.]	270	270.9	0.9
Case  8	unbalance [g⋅mm]	12.0	12.6	0.6
	angle [deg.]	315	310.4	−4.6