摘要
电磁电机斩波恒流细分驱动控制由AT89C51单片机、晶振电路、地址锁存器、译码器、EEPROM存储器及可编程键盘/显示控制器Intel-8279等组成。单片机输出细分电流控制信号,经D/A转换成模拟电压信号,与取样信号比较,形成斩波控制信号,控制前级驱动电路的导通和关断,实现绕组中电流的闭环控制,达成步距的精确细分。
Micro-stepping driving control system for chopping wave constant current of electromagnetic motors is mainly composed of AT89C51 microcomputer, resonant circuit, address latch unit, decoder, EEPROM memory, and programmable keyboard/display control (Intel-8279) etc. Micro-stepping current control signal from microcomputer is converted into analog voltage signal through D/A converter. After the analog signal is compared with sampling signal, chopping wave control signal is formed to control the conduct/cut of pre-stage driving control circuit. Close-loop control of winding current and precise micro stepping is realized with this way.
出处
《兵工自动化》
2004年第2期52-53,共2页
Ordnance Industry Automation
