Patent ID: 7437264

Claim:
A method for balancing a rotor of a rotary machine, wherein the rotor includes n rotor airfoil blades and a rotor shaft, and wherein n is a total number of rotor airfoil blades, said method comprising: receiving at least one measurement of at least one of a load, an acceleration, and a displacement that pertains to at least one bending moment acting on the rotor shaft; determining at least one value of the at least one bending moment acting on the rotor shaft using the received at least one measurement; determining a pitch offset angle value of no more than (n−1) rotor airfoil blades based at least in part on the at least one bending moment acting on the rotor shaft, which when applied to the no more than (n−1) rotor airfoil blades, facilitates reducing the at least one bending moment acting on the rotor shaft; and changing a pitch angle of the no more than (n−1) rotor airfoil blades by the pitch offset angle value to facilitate reducing the at least one bending moment acting on the rotor shaft and to facilitate balancing the rotor.