高速并條機具有很高的出條速度，如何改善自調勻整性能，保證紡紗的質量是研究中
的一大難點。為此，提出了一種基于定長控制新技術的自調勻整控制系統：在硬件上采用微機配合先進的PCI 控制卡保證高速度；軟件上利用定長控制中斷保證控制精度。這種新型控制系統在高速并條機FA398 的研發過程中得到了成功應用，證明該新型控制系統是切實可行的。
關鍵詞：定長控制, 自調勻整，高速并條機
Abstract: How to improve auto-leveling property and the yarn quality under high speed is a
difficulty for developing high-speed drawing frame. We put forward a new control system based on the certain-length control technique: for hardware, computer and advanced PCI control board are adopted to ensure high speed; for software, certain-length control technique is used to get high control precision. This control system is used well in developing high-speed drawing frame FA398, and it is proved that this new control system is practical.
Keywords: certain-length control, auto-leveling, high-speed drawing frame