【摘要】 介绍了用ＮＥ５５５控制固态继电器实现感应电动机软起动以及电流闭环控制设计实验证明，该方案具有良好的软起动性能，且造价低更多还原

【Abstract】 This paper introduced a soft starter for AC motors based on solid state relay controlled by NE555,and the design of the close loop.The experiment has proved this strategy has good performance,and its cost is cheap.更多还原