Patent ID: 7512463

Claim:
A method of determining adjustments of blades to decrease vibrations caused by rotating the blades from a plurality of rotors, comprising: determining a first plurality of adjustment normalization values for a plurality of possible adjustments of blades of a first one of the plurality of rotors, wherein the first plurality of adjustment normalization values normalizes different types of adjustments having different units; determining a second plurality of adjustment normalization values for a plurality of possible adjustments of blades of a second one of the plurality of rotors, wherein the second plurality of adjustment normalization values normalizes different types of adjustments having different units and wherein, for a particular adjustment type, an adjustment normalization value of the first plurality of adjustment normalization values is independent of a corresponding adjustment normalization value of the second plurality of adjustment normalization values for the particular adjustment type; providing coefficient of vibration data that corresponds to effects on vibration caused by adjustments to the blades; receiving a plurality of vibration values corresponding to vibrations caused by the blades; applying the coefficient of vibration data and the first and second plurality of adjustment normalization values to the vibration values to provide a set of total normalized vibration values corresponding to sets of possible adjustments to be applied to the blades; and selecting a set of adjustments to be applied to the blades, the selected set of adjustments having a total normalized vibration value less than a predetermined value and corresponding to a lower total amount of adjustment than other sets of adjustments having a total normalized vibration value less than the predetermined value.