Abstract:

In order to meet the development requirements of the network control of computerized flat knitting machine, a kind of high-speed CAN bus network control system for computerized flat knitter is proposed based on the traditional stand-alone controller, and a network control structure of the "PC+ nodes" is designed to use in the computer controller, which can control two flat knitting machines at the same time. The components of flat knitting machine, including motors, electromagnetic controllers and sensors are equivalent to the network nodes. According to the network structure of two machine’s controllers, the simulation model of the network computer flat knitting machine based on CAN bus is established by Truetime toolbox in Matlab software. Based on the model, by simulating and comparing the dynamic priority scheduling algorithm and hybrid scheduling algorithm, it concludes that the hybrid scheduling algorithm fits the computerized flat knitter network control system, which verify the feasibility of the network controller of computerized flat knitting machine based on CAN bus.

Key words: computerized flat knitting machine, network control system, CAN bus, scheduling algorithm