Active Magnetic Bearing Rotor Model Updating Using Resonance and MAC Error

Table 2

Experimental and theoretical (no updating) modal frequencies.

Bending; modes	Calculated freq. (Hz)	Measured freq. (Hz)	Error; (Hz)
1	454.9	477.5	22.6
2	1137.6	1167.5	29.9
3	1802.7	1857.5	54.8
4	2733.2	2805	71.8