提出一种不需张力传感器的张力控制方法, 即根据张力与半径、转矩之间的关系, 通过检测放卷材料的半径, 利用单片机的运算功能实现张力控制, 文中详述其软、硬件设计思想。 关键词: 张力控制, 单片机, 中断接口 【Abstract】 Th is article introduces a new tension controlmethod w ithout tension sensor. It is realized by measuring the radius of the unw ind material, and calculated by ch ip m icrocomputer according to the relationsh ip of radius, tension and torsion. Th is article p rovides the design though t of softw are and hardw are. Keywords: ten sion con trol, ch ipm icrocomputer, in terface of in terruption