Patent ID: 8863573

Claim:
A method of dynamically balancing a shaft for multiple rotational speeds, the method comprising the steps of: (a) loading the shaft into a balancer; (b) rotating the shaft in the balancer at a predetermined first rotational speed while measuring, with a sensor, a first force and a first angle of a first shaft imbalance measurement; (c) rotating the shaft in the balancer at a predetermined second rotational speed, different from the first rotational speed, while measuring, with the sensor, a second force and a second angle of a second shaft imbalance measurement; (d) comparing the first shaft imbalance measurement to a first predetermined imbalance specification and comparing the second shaft imbalance measurement to a second predetermined imbalance specification; (e) if the first shaft imbalance does not meet the first predetermined imbalance specification or the second shaft imbalance does not meet the second predetermined imbalance specification, then calculating a composite correction based on the first and second shaft imbalance measurements; and (f) applying a first amount of weight to the shaft at a first correction angle based on the calculated composite correction.