An Optimized Modal Balancing Approach for a Flexible Rotor Using a Vibration Response While the Rotor Is Speeding Up

Table 5

Comparison of different methods for the rotor balancing at the second critical speed.

	Conventional MBM			Optimization approach
Correction plane	Plane 1	Plane 2	Plane 3	Plane 1	Plane 2	Plane 3
Initial amplitude (mm)	0.1138	0.0431	0.1363	0.1138	0.0431	0.1363
Initial phase (°)	152.1	−42.3	−41.5	152.1	−42.3	−41.5
Correction mass (g)	0.88	1.06	0.84	0.7	\	0.8
Correction phase (°)	−28.0	138.0	138.0	−28.0	\	138.0
Actual installation phase (°)	337.5	135.0	135.0	337.5	\	135.0
Residual amplitude (mm)	0.0834	0.0420	0.0980	0.0341	0.0427	0.0780
Balancing rate	27%	3%	28%	70%	3%	43%
Average balancing rate	19%	39%