基于单片机控制的精密交流步进电源

摘要

为了满足市场对高精度交流步进电源的需求，设计并实现了一种基于单片机控制的精密交流步进电源。主电路采用典型的单端反激式开关电源，实现交流工频220V到直流340V的升压输出，控制电路核心芯片采用51单片机，利用PWM和SPWM技术驱动功率开关管的导通和关断，结合单相双向功率芯片CS5460精准测量和计算，实现输出交流电压范围为0.1V-220V，步进电压50mV。该精密交流步进电源具有使用便捷、可靠性高、精度较高等优点。%In order to meet the market demand for high-precision stepping AC power , designed and implemented the precision stepping AC power based on the single-chip microcomputer controling. The main circuit used typical single-ended flyback switch power supply, implementation of AC 220V to DC 340V power frequency boost output, control circuit used the 51 single-chip microcomputer as core chip, taking advantage of PWM and SPWM technology driven conduction and shut off the power switch tube, combining with single-phase two-way power chip CS5460 precise measurement and calculation, realized the output voltage range from 0.1V to 220V, stepped voltage 50 mV.The precision stepping AC power supply has the advantages of high convenient,use reliability and high precision.