Control system multidiameter circular knitting machine based on ARM9

WANG Deming， CAI Jinda, JIN Zhengyu

(Mechanical Engineering School, University of Shanghai for Science and Technology, Shanghai 200093)

Abstract: Aiming at the problem of single shape trouser because of traditional manufacture method， a new circular knitting machine control system which can weave multidiameter trouser was designed and realized. The industrial touch screen controller based on ARM9 as the interaction media was used, and all the peripherals were controlled via I/O ports or communication. The step motors’ speeds were totally controlled by the feedback of the encoder and the tracking calculation factor P, and the signals of the encoder were filtered for eliminating errors. After testing and modifying, a qualified trouser can be produced. The results indicate that this system can not only be precisely controlled, but also respond to error status quickly and correctly. It has great robustness as well as friendly human machine interface, so can be applied in various production environments.

Key words: circular knitting machine; ARM9; speed control