Unbalance Identification of Speed-Variant Rotary Machinery without Phase Angle Measurement

<div>Transient resonance peak response versus speed of bearing 1 (node 2) with balancing (—) and without correction mass (- - -): (a) first critical speed, (b) second critical speed, and (c) third critical speed.</div>

Shock and Vibration

fig8

Figure 8

Figure 8: Unbalance Identification of Speed-Variant Rotary Machinery without Phase Angle Measurement 