Abstract: According to the working principle of the takedown comb control system and the control requirements of takedown comb knitting running for the computerized flatting machine，a design method on the automatic takedown comb 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. Focusing 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, meeting the different driving requirements of the AC torque motor on the each knitting stage. The running result indicated that, the control system conforms to the knitting control requirements of the takedown comb system, and it operates stable, showing a highly application value.

Key words: ARM processor, fundamental flat knit knitting, control of rising and reducing speeds, control of torque change