摘要
介绍了 Micro L inear公司生产的 ML44 2 8无刷直流电机无传感器 PWM智能控制器的内部结构 ,它是无位置传感器无刷直流电动机控制的简易方法 ,该控制器内部的反电势电路、起动及换向逻辑电路、限流比较器和保护电路简化了无位置传感器无刷直流电动机的控制 ,做到单独控制的正反向运行 ,起动时无反转 ,采用 PWM控制或最小噪声的线性控制 。
ML4428 senseless smart-start(BLDC) PWM motor controller developed in Micro Linear Corporation is introduced in this paper.It is an easy method on controlling senseless BLDC motors.In this controller,there are back-EMF sensing circuit start-up and commutation logic circuit current-limiting comparer and protection circuit.They make it simple for controlling senseless BLDC motors-stand-alone operation with forward and reverse no backward movement at start-up and PWM control for maximum efficiency or linear control for minimum noise.
出处
《微电机》
2001年第1期24-26,共3页
Micromotors
