Design of warp tension direct measurement device in loom

CHEN Yi-bing， LIU Yi-sheng， WU Zhen-yu
（Institute of Mechatronic Engineering， Zhejiang Sci-Tech University， Hangzhou 310018， China）

Abstract： Aiming at the low precision of warp tension in the current high speed loom，a kind of new mechanical data acquisition device was designed. Firstly，the reliability of the device was ensured theoretically，when tan θ was less than 0.15，the measured tension was closed to the actual tension，and the error of the structure was eliminated. Secondly， a mathematic modeling was made， and a good user interface was acquired by Delphi to use for reading and saving the data of warp tension. At last，experimental study on the RIFAJA10 air-jet loom was presented with two different methods（directly，indirectly）. The results show that the direct method is better than the indirect method in precision and anti-interference，and it has a stable variation of warp tension in a weaving cycle.
Key words： warp tension； mechanism； data acquisition； Delphi programming