摘要
利用8098单片机的脉宽调制输出(以下简称PWM)的特点,控制大功率晶体管模块GTR的导通与关断比,从而使步进电机绕组中的电流保持不变,大大改善了绕组中电流波形,提高了步进电机的高频特性.本驱动源最大相电流可达20A.
Making use of the feature of the pulse width modulation output, controlling the ratio of conducting and shutting off of the large power transistor module GTR, so the current of the stepper motor winding can keep the constant and its wave in the winding are get to improve.
出处
《微特电机》
北大核心
1995年第4期32-33,共2页
Small & Special Electrical Machines
关键词
微机控制
步进电动机
驱动源
电机
pulse width modulation ratio of con-ducting and shutting off large power transistor module GTR
