柔性转子平衡技术在国内已广泛地被采用,但在现场进行转子平衡,一般只能在转子两个端面上或外伸端加重,它虽然可以有效地平衡转子的一、二阶振型,但由于它不能与三阶振型成正交,往往在平衡一、二阶振型的同时又会引起工作转速下转子两个轴承同相分量振动的增加。为了消除这种同相分量振动,现场大多采用在转子两个端面上加对称重量或在外伸端加重。虽然也能见效,但灵敏度低,相反这种加重对一阶临界转速下以及相邻转子的轴承的影响系数很高。因此往往同相分量振动还未得到解决,却使一阶振动和相邻轴承振动升 Flexible rotor balancing technology has been widely used in China, but in the field of rotor balancing, generally only on both ends of the rotor or outward extension of aggravated, although it can effectively balance the rotor of the first and second order mode, but the rotor, Because it can not be orthogonal to the third mode, it is often balanced with the first and second modes to cause the increase of the in-phase component vibration of the two bearings at the same operating speed. In order to eliminate this in-phase component vibration, the scene is mostly used on both ends of the rotor plus symmetrical weight or exaggerated emphasis. Although effective, it has a low sensitivity. On the contrary, this aggravating factor has a high influence on the first critical speed and the bearing of the adjacent rotor. So often in-phase component vibration has not yet been resolved, but the first-order vibration and adjacent bearings vibration