进动分解在复合故障转子动平衡中的应用

发布时间：2018-05-16 06:27

本文选题：动平衡 + 复合故障　；参考：《机械设计与制造》2016年05期

【摘要】：实际现场机组振动大时,往往不是由单一故障引起的。在复合故障存在情况下,确定不平衡故障及其严重程度是一个难点,在对转子进行动平衡过程中,由于受到如松动、碰摩等非平衡故障因素的影响,往往需要多次重复平衡,以达到减振的目的。通过对正、反进动分解的分析,以及复合故障情况下不同故障对正、反进动的影响研究,得出正进动分量的大小是衡量不平衡的重要指标。提出一种在复合故障存在情况下的动平衡改进方法:将正进动分量作为动平衡的平衡目标,用进动比的变化作为衡量现场动平衡的终止条件。实验证明:改进方法可以有效识别非平衡故障,平衡终止条件可用。
[Abstract]:When the actual field unit vibration is large, it is often not caused by a single fault. In the presence of complex faults, it is difficult to determine the unbalance fault and its severity. In the process of dynamic balancing of the rotor, it is often necessary to repeat the balance many times because of the influence of non-equilibrium fault factors such as loosening and rubbing, etc. In order to achieve the purpose of damping. Through the analysis of positive and inverse precession decomposition and the study of the influence of different faults on positive and reverse precession in the case of complex faults, it is concluded that the magnitude of forward precession component is an important index to measure the imbalance. A dynamic balance improvement method in the presence of complex faults is proposed. The forward precession component is taken as the balance objective and the change of precession ratio is used as the termination condition to measure the field dynamic balance. The experimental results show that the improved method can effectively identify the non-equilibrium faults and the equilibrium termination condition is available.
【作者单位】：郑州大学振动工程研究所;
【基金】：河南省教育厅自然科学研究计划项目(2010B460018) 河南省高等学校精密制造技术与工程重点学科开放实验室开放基金资助项目(PMTE201301A)
【分类号】：TH17

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