Rigid Rotor Dynamic Balancing with the Influence Coefficient Method

On the base of the causes of the rotor's unbalanced vibration, the rigid rotor mathematic model was established to analyze the vibration form of a rigid rotor under unbalance inertia force. The principle of the influence coefficient method had been presented, and the principle of the cross-correlation method to extract the fundamental frequency signal of unbalance vibration was introduced. The process of conducting 1-plane and 2-plane dynamic balancing were described in detail. The method was found to be effective and practical. Finally through examples testify, it verified the feasibility of the rigid rotor dynamic balancing with the influence coefficient method.