前言步进电机是在数字控制系统中得到广泛应用的一种伺服元件,由于受制造工艺及本身固有特性的限制,要进一步减小步距角及改善力矩——频率特性有一定的困难。采用细分步距的方法可大大减小步距角及改善力矩——频率特性。但若细分数大,则控制线路复杂,可靠性也受到一定的影响。本文提出细分三步的简单控制方案,其所用元件 Foreword Stepping motor is a kind of servo element which is widely used in digital control system. Due to the limitation of manufacturing technology and its inherent characteristics, it is difficult to further reduce the step angle and improve the torque-frequency characteristics. Using subdivision steps can greatly reduce the step angle and improve the torque - frequency characteristics. However, if the subdivision number is large, the control circuit is complicated and the reliability is also affected to a certain extent. This paper presents a simple three-step control scheme, the components used