为提高数控设备的控制精度,应减小脉冲当量δ,实现的途径有三:i.减小步进电机的步距角。ii.加大步进电机到传动丝杠之间的齿轮降速比i 和减小传动丝杠的螺矩h。iii.将步进电机的步距角θ进行细分。前两者受机械结构及制造工艺限制实现困难,尤 In order to improve the control accuracy of numerical control equipment, the pulse equivalent δ should be reduced. There are three ways to achieve this: i. To reduce the step angle of the stepper motor. ii. Increase the gear reduction ratio i between the stepper motor and the transmission screw and the reduction of the transmission torque h. iii. Subdivide the step angle θ of the stepper motor. The first two are limited by the mechanical structure and manufacturing process, especially