应用张力波谱图的织机张力异常故障分析

摘要

为解决织造加工过程中引起经纱张力异常的机械故障难以发现的问题,在对经纱张力信号进行研究分析的基础上,提出了基于经纱张力波谱图的故障诊断方法.首先分析了理想织造状态下,张力的时域信号特征及其波谱形态;同时研究了因经纱张力系统不同形式的机械故障产生的叠加张力波及其在波谱图上所表现的特征;通过比较二者在波谱图上的差异来诊断造成经纱张力异常的机械故障.同时通过织机后梁故障实例验证了本文方法的正确性.结果表明,基于张力波谱图可对引起张力异常的机械故障部件进行快速精确定位,也为织造加工过程中相应工艺参数的调整提供了重要参考.%During the process of weaving, loom mechanical failure causing warp tension anomaly is difficult to find. A new fault diagnosis method was put forward based on the analysis of the warp tension signal and spectrum of warp tension. First the time domain signal and spectral shape of tension under ideal weaving condition were analyzed. At the same time, superposed tension caused by different forms of mechanical faults of warp tension system and their characteristics in the wave spectrum were studied;By comparing the spectrum difference mechanical faults causing warp tension anomaly were diagnosed. The correctness of this method was proved using the example of back rest of looms. Based on tension spectrum, mechanical failure parts which caused abnormal tension are positioned quickly and accurately, and it also provides an important reference for the adjustment of weaving process parameters.