The electromagnetic balancing regulator and the automatic balancing system

A new kind of automatic balancing system is presented with the electromagnetic balancing regulator. The system provides a vibration feedback and a correction mass position feedback, which results in the adoption of a new balancing method. The method first obtains the influence coefficients and unbalance vector of the rotor system, then calculates the optimum positions of the correction masses and controls them to move to the exact positions. All the operations are at working speed without interruption. Moreover, the method's feasibility and efficiency have been verified by an experiment on a model fan. (C) 1998 Academic Press Limited.