positive-negative control

基本解释

Sensorless DC motor close-loop control module include reversing control, current loop regulating, the positive and negative rotational speed controls with speed ring etc.
无传感器闭环控制模块包括换向调节、电流环调节和速度环调节、正反转速控制等功能。
The control method of electric machine positive-negative rotating and "Y-△"starting in electrics experiment are studied by means of relay-contactor control and PLC control.
对“电工学”课程实验中的电机正反转控制和“Y-△”启动控制，分别用接触器控制和PLC的计时器控制，并对两种方法进行了对比研究；
A multifunction hand electric drill control using voltage negative feedback and current positive feedback, with protecting devices of current cut-off negative feedback, is proposed.
本文介绍的多功能手电钻控制器，采用电压负反馈、电流正反馈，并有电流截止负反馈的保护装置。