According to the working principle of the fundamental flat knit knitting control system and the control requirements of fundamental flat knit knitting of the computerized flat knitting machine,a design method of the automatic fundamental flat knit knitting control system of flat knitting machine based on the cortex-M3 core ARM processor was proposed. And the design of hardware and software for the system was discussed in detail. Based on the control features of sissors and clip driven by the step motor, the conception of multi-segment control and a discrete-linear rising and reducing speeds control idea for the step motor were revealed. Additionally, the changing torque control on the lifting torque motor was realized, so as to meet the different driving requirements of the AC torque motor in each knitting stage. The running result indicated that, the control system conforms to the knitting control requirements of the fundamental flat knit knitting system, and it operates stably, showing a high application value.%根据电脑横机起底工作原理以及起底编织控制要求,提出基于Cortex-M3内核ARM处理器的电脑横机自动起底控制系统的设计方法,详细论述了控制系统硬件设计和软件开发.根据步进电动机驱动剪刀夹子的控制要求,提出多段速度控制概念以及离散化的直线型步进电动机加减速控制方法；并提出起底升降的变力矩控制,以满足起底编织各阶段不同拉力要求.运行结果表明,该系统符合起底编织控制要求,工作稳定,具有良好的应用价值.
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