基于五点反演法的上机架动载荷识别

Dynamic force identification for upper bracket based on the five-points method

本文简要介绍了作者提出的动载荷识别的五点反演法,即通过t+2Δt,t+Δt,t,t-Δt和t-2Δt这5个时刻测点上的位移值的线性组合来确定t时刻的载荷值。在对某水轮发电机组上机架的动载荷识别过程中,给出了五点反演法的识别步骤。识别结果验证了该方法的有效性。本文的研究成果为水轮机组的振动分析提供了一种新的分析方法。

This paper briefly introduces the five-points method,which was used to determine the force at t using the linear combination of the displacements of the measuring points at t ＋ 2Δt,t ＋ Δt,t,t - Δt and t - 2Δt. For the dynamic force identification for an upper bracket,the procedure based on the five-points method is given. The results prove the validity of this method. This work provides a new way for vibration analysis.