Abstract:

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, superimposed tension caused by different forms of mechanical faults of warp tension system and their characteristics in the wave spectrum; By comparing the spectrum difference mechanical faults causing warp tension naomaly were diagnosed. The correctness of this method was proved using the example of back rest of looms. Base 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.

Key words: loom mechanical fault, tension anomaly, superposed tension wave, mechanical wave, warp tension