Abstract:

Aimed at the low reliability and maintenance difficulties problem of conventional warp knitting machine electronic jacquard control system with complex multi-card structure, this paper designed an embedded electronic jacquard control system, in which the microcontroller, pattern data memory, jacquard drive circuit, boost circuit and communication interfaces were integrated inside the piezo jacquard guide bar. The system with a distributed control architecture is called as the embedded electronic jacquard guide bar. The embedded electronic jacpuard guide bar mounted in a warp knitting machine adopts two MAX488 chips with full-duplex and low-power to implement serial daisy chain communication mode. Based on the analysis of the principle and characteristics of piezoceramic jacquard patterning, the paper also provided the design and implementation methods of the architecture and hardware circuit of embedded electronic jacquard control system. Test results show that the designed system work independently access to high voltage power supply, and which stable performance, high reliability, full function and strong interference resistance.

Key words: warp knitting machine, piezoceramic jacquard patterning, electronic jacquard, embedded control system