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步进电机调速系统一般组成框图如图1所示。晶体振荡器—脉冲分频器—脉冲分配器—功率放大器—步进电机—傅动机构图1 步进电机调速系统框图这种调速系统的局限性在于,脉冲频率只能成倍改变,如2、3分频……所以使步进电机的速度也只能成倍改变。这对于某些应用是不方便的。例如在自动记录仪中,由于对走纸速度的守时精度(或误差)这一指标要求越来越高,所以越来越多地采用步进电机的脉冲调速系统。但这种走纸调速系统的速度仍存在误
Stepper motor speed control system block diagram shown in Figure 1. Crystal Oscillator - Pulse Divider - Pulse Splitter - Power Amplifier - Stepper Motor - Fu mechanism Figure 1 stepper motor speed control system block diagram of the limitations of this speed control system is that the pulse frequency can only be changed several fold, Such as 2,3 divider ... ... so the speed of the stepper motor can only be changed several times. This is inconvenient for some applications. For example, in the automatic recorder, because the speed of the paper on the accuracy (or error) of this index is more and more demanding, so more and more use of stepping motor pulse speed control system. However, the speed of this paper-feeding speed control system still exists