Total-servo Control System Of Rapier-loom Based On ARM And CPLD

With the improvement of people's livelihood, more and more people runsafter clothing individuation. The market demand which complies with unitarybreed, large batches has changed into small batches, various breed and fastresponse. With the growth of top-grade cloth, the product of rapier-loom hasalso increased. This has brought good opportunity for domestic firm. Thehigh-speed loom market which is monopolized by abroad company will bebroken. Our government has encouraged development of weaving industryand worked out green energy policy. Total-servo control system comes intosuch kind of demand.Firstly, nowadays most of rapier-loom control system has based onAsynchronous motor drive, but the reliability of transmission mechanism isweak, easily damaged and it can't change speed in the weaving process. Sothis paper introduces the design idea and method of a new, advanced type ofTotal-Servo control system of Rapier Loom to drive permanent magnetsynchronous servo motor.Then, this paper presents a design of system architecture which is verysimple, speedy, reliable, expansible and robust. Its processor is based onSTM32which uses Cortex-M3kernel, the hardware circuits are of opticalcoupling isolation design, and the CAN communication is used between themain controller and sub modules. Electronic let-off and electronic take-upsystem is based on PID control. Furthermore, this paper presents a simplepracticable design method of loom stopping strain compensation. In practice,it gets a good result.By combining the controller and servo system, the system precision canbe remarkably improved, and the quality of cloth is therefore improved. Experiments show that the system is energy-saving, easy-operating, lowfailure-rate.