纺织工业成品织物的质量在很大程度上取决于半成品即纱线的质量。纱线的物理指标主要是条干均匀度和强力。前者不在本文讨论的范围之内,后者即单根纱线的拉伸断裂强力及断裂伸长是纺织厂生产过程中严格测试的项目。所以单纱强力机是纺织行业必备的质量测试仪器。我国在六、七十年代生产的摆锤式强力机是基于等速下降(CRE)原理的机械式仪器,没有或很少电子自控装置,由于试验过程基本上靠人工操作和处理数据,操作人员劳动强度较大。近年来引进的各国单纱强力机尽管各有长处,但在以下两点上都不能满足国标GB3916-83的要求: The quality of the finished textile fabric depends largely on the quality of the semi-finished product, ie the yarn. The physical indicators of the yarn are mainly the evenness and strength. The former is beyond the scope of this article, which is that the tensile strength and elongation at break of a single yarn are strictly tested in the mill’s manufacturing process. Therefore, single yarn strength machine is an essential textile industry quality testing equipment. China’s pendulum-type strength machine produced in the sixties and seventies is a mechanical instrument based on the principle of constant speed descent (CRE). There is no or very few electronic self-controlled devices. Since the testing process basically depends on manual operation and data processing, the operator Greater labor intensity. In recent years, the introduction of the single yarn strength machine despite their strengths, but in the following two points can not meet the national standard GB3916-83 requirements: