The automation level of textile machinery industry is improving year by year, and automation technology is widely used in new textile machinery. This technology includes advanced information processing and control technology, that is, a control system composed of plc, industrial control computer, single chip microcomputer, man-machine interface, field bus and so on. The main motion mechanism should be realized by stepping motor, servo motor and other control motors. More representative echatronics product of Cotton textile equipment , such as bobbiner, sectional warper, winder, this kind of machine adopts automation technology .For textile machinery industry ,due to its bad working environment, the motor is required to have a high dustproof grade, can withstand high temperature, frequent positive reversal, impact resistance, as well as long time high speed and high load operation and so on.