无刷直流电动机电梯门机防夹控制策略

Control Maneuver for Guarding Against Clamping in BLDCM Elevator Door Control System

在现代电梯门机控制系统设计中,多用光幕开关来检测通过电梯门进出的人或物,但是光幕开关在安装过程中因种种原因有时会产生误动作信号,给电梯门的运行带来了安全隐患。无刷直流电动机电梯门机控制系统中安装了光幕开关,对经过电梯层门的人或物体进行非接触式的检测外;还利用了表征转矩大小的电流信号,通过对电流信号的处理有效防止夹人、伤人现象的发生。介绍了两种转矩检测数字化方法。

This is an elevator door control system based on BLDCM. Except installing a photo-electricity switch in it for testing passers-by, this design can prevent clamping effectively by taking advantage of phase current signals, which is proportional to the output torque. Besides, this paper also introduces two methods that digitalize the torque testing process.