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

Table 4

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

	Conventional MBM			Optimization approach
Correction plane	Plane1	Plane 2	Plane 3	Plane 1	Plane 2	Plane 3
Initial amplitude (mm)	0.1408	0.1676	0.1525	0.1408	0.1676	0.1525
Initial phase (°)	−31.4	−30.8	−31.1	−31.4	−30.8	−31.1
Correction mass (g)	0.45	0.37	0.44	\	1.1	\
Correction phase (°)	150.0	150.0	150.0	\	150.0	\
Actual installation phase (°)	157.5	157.5	157.5	\	157.5	\
Residual amplitude (mm)	0.1011	0.1142	0.1311	0.0821	0.0872	0.0574
Balancing rate	28%	32%	14%	42%	48%	63%
Average balancing rate	25%	51%