Robust Method for the Rotor Unbalance Estimation

TL;DRAbstract

Several researchers have proposed many methods for balancing the rotor to reduce the machine vibration. Broadly these methods can be categorized into two classes – balancing using measured responses only (known as Influence Coefficient Method) Approach), and balancing using both measured responses and a mathematical (often finite element (FE)) model of rotating machine (Modal Balancing Method). Both of these methods require several trial run-down runs of machine to estimate the unbalance masses and phases at multi balancing plane and usually a substantial experience in field balancing is also required. In addition to this for Modal Balancing a reliable model of the machine is also important which is often difficult to construct. Considering these practical difficulties a method has been developed recently which found to have the potential for fast and reliable rotor unbalance estimation. The method just uses measured pedestal vibration from a single run-down of a machine along with a p

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