Design of electronic shogging system of warp knitting based on torque control mode

In view of the defects that position control mode and speed control mode can′t meet the requirements of high accuracy positioning and high dynamic response for electronic shogging system of high-speed warp knitting machines,an electronic shogging control system based on torque control mode has been developed.In order to achieve 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 analysis of theory and practice,a formula for selection of a model of motor was derived,which can be used to choose the servomotor of high dynamic response.And tests have verified the high accuracy positioning and high dynamic response for electronic shogging system in torque mode by the vibration of guide bar and the feedback speed of the motor.