国内不少书籍和资料上介绍的水轮发电机转子现场动平衡方法,主要对小长径比的圆盘形转子适用。这种方法的基础是转子不平衡离心力与支承振幅的大小成正比,没有考虑转子的不平衡力偶问题。对小长径比的转子,可以忽略不平衡力偶,因为该力偶较小,对动平衡精度影响较小。而对大长径比的转子(转子碰轭高度与转子外径之比大于 Many domestic books and information on the hydro-generator rotor field balancing method, mainly for the small aspect ratio disc rotor applicable. The basis of this method is that the imbalance centrifugal force of the rotor is proportional to the magnitude of the bearing amplitude, and the unbalanced force couple problem of the rotor is not considered. For a small aspect ratio of the rotor, you can ignore the imbalance couple, because the couple is smaller, less impact on dynamic balancing accuracy. The large aspect ratio of the rotor (rotor yoke height and rotor outer diameter ratio greater than