三相反应式步进电动机的高性能驱动电源

提出了一种可变细分的高性能步进电动机驱动电源,该电源用于驱动三相反应式步进电动机。细分波形由AT89S52单片机控制DAC0832数/模转换器产生,驱动单元采用高压型恒流斩波电路。该电源在控制步进电动机转动时,微步精度高,低速运转时电动机振荡小,高速运转时输出力矩大。通过选择合适的细分数,可与不同档次的CNC控制器配套使用。批量使用结果表明,该电源稳定性好、性价比高,具有一定的推广使用价值。

High Performance Driving Power Supply for 3-Phase Reaction Stepmotor

A type of variable subdivision high performance driving power supply for stepmotor has been presented in the paper which is used to drive three-phase reaction stepmotor. The subdivision waves are generated by DAC0832 D/A converters that are controlled by AT89S52 single-chip microcomputer. The driving unit adopts high-voltage constant current chop circuit. When being used to drive stepmotor, the driving power supply has high accuracy of micro-step angle, while the vibration of the stepmotor is low at low speed and the power supply outputs high torque at high speed. By selecting proper subdivision number, the power supply is suited to different classes of CNC controllers. The result of application in batches shows that the power supply has good stability and cost performance, can be widely used.