为使转子具有比较满意的平衡精度,可以采用现场动平衡技术.现场条件下的动平衡方法,仅单面动平衡即有幅值相位法(相对于基准信号的比较相位)、两点试重法和三点试重法等.双面动平衡也有幅值相位法和三点试重法.用相位来确定不平衡重量的方位角是最便捷、准确的方法,但由于现场的情况很复杂,容易造成测量的信号,尤其是相位信息不很准确,给平衡校正工作带来影响.为消除这种影响,我们把幅值相位法和两点试重法结合起来使用,即在转子上对称地钻两个孔,以便携带配重.在测量由初始不平衡量引起的振动时,即应注意相位角是否稳定,如稳定,只加一次配重即可完成平衡校正工作;否则,应记下数据,连续对称地加两次试重,分别按两点试重法和幅值相位法计算出3个校正值,然后择中加配重,即可获得较好的平衡效果.不平衡量大小的变化与由失衡引起的振动值的变化不成线性关系,只有当不平衡量减小到一定程度时,振动值才会明显下降,此后继续减小不平衡量,振幅不再有显著变化.线性假设理论带来的理论误差,以及在加减配重、试重时存在的误差约会影响平衡精度,而上述两种方法结合的平衡法,可在一定程度上弥补这些误差带来的影响.由于平衡配重的计算比较繁复,宜采用计算机来完成.我们根据平衡的计算方法,自行编制了两点试重法单 In order to make the rotor have more satisfactory balance precision, the on-the-spot dynamic balancing technology can be adopted.At the same time, dynamic balance method with single-side dynamic balance means amplitude-phase method (relative phase to reference signal) Method and three-point trial weight method, etc. Dual-sided dynamic balance also has amplitude phase method and three-point trial weight method.Using phase to determine the azimuth of unbalanced weight is the most convenient and accurate method.But due to the complexity of the scene , Easily lead to the measurement of the signal, especially the phase information is not very accurate, to balance the impact of correction work.To eliminate this effect, we combine the amplitude and phase method and the two try-weight method used in the rotor symmetry Drill two holes to carry the counterweight.When measuring the vibration caused by the initial unbalance, you should pay attention to whether the phase angle is stable, such as stable, only a single counterweight to complete the balance correction; otherwise, should be recorded Data, continuous and symmetrical plus two trial weight, respectively, according to two point trial method and the amplitude and phase method to calculate the three correction values, and then select the plus weight, you can get a better balance of the effect of changes in the size of the unbalance Vibration caused by imbalance The value of the change is not linear, only when the imbalance decreases to a certain extent, the vibration value will be significantly decreased, then continue to reduce the imbalance, the amplitude no longer significant changes in the theory of linear hypothesis theory error, and in Addition and subtraction of the weight, the weight of the trial weight will affect the accuracy of the balance, and the combination of these two methods of balance method, to some extent make up for the impact of these errors due to the calculation of the balance weight more complicated, it is appropriate to adopt Computer to complete.We based on a balanced calculation, self-prepared two trial weight list