基于九点控制器的电机软起动器研究

提出以80C196KC单片机为核心的基于九点控制器原理的电机软起动控制器。阐述了软起动器的工作原理，回路结构和软件程序结构。软起动器根据采样信号和键盘的设定值计算出电压偏差和偏差变化率，由九点控制算法控制触发角的大小，从而达到控制电机电压缓慢上升的目的，达到提高软起器的可靠性，稳定性和准确性的目的。

Research of Soft Starters of Motor on Nine-Point controller

The Soft Starters are reproduced by the Nine-Point controller with the MCU named 80C196KC.This paper demonstrate an operation principal ,the structure of circulation and soft design about the Soft Starters.The Soft Starters in the paper are designed by the discrepancy of voltage from reality and fantacy.The MCU use the Nine-Point controller to control a Thyristor turn down or off.Using the Nine-Point could reinforece the reliability ,stability and precisility of Soft Starters.