Abstract: In view of the defects which position control mode and speed control mode can’t meet the requirements of high accuracy and high dynamic response for electronic shogging system of high-speed warp knitting machine, a kind of electronic shogging system based on torque control mode has been developed. In order to achive the flexible impact and the accuracy of positioning , the motion curve of electronic cam guide bar and the PID control algorithm of motion control card have been designed.Through the analysis of theory and practice, a formula was derived, which can be used to choose the moter of high dynamic response. And test and verify the high accuracy and high dynamic response for electronic shogging system in torque mode from the vibration of guide bar and the feedback speed of the moter.

Key words: warp knitting, electronic guide bar shogging, torque control mode, electronic cam, PID control, servo