基于PWM变频调速的PLC电梯控制系统设计  

PLC Elevator Control System Based on PWM Speed Control

作　　者：王国金[1] 马殷元[1] 吕凤玉[1] 

机构地区：[1]兰州交通大学机电技术研究所,甘肃兰州730070

出　　处：《广西科学院学报》2012年第1期59-61,共3页Journal of Guangxi Academy of Sciences

摘　　要：利用光电旋转编码器产生高速脉冲,引入PLC高速计数器端进行计数,利用PWM变频调速,设计电梯控制系统。该系统确定电梯理想运行速度和加速度曲线,实时计算电梯的楼层位置、平层位置、上下换速点,实现电梯的精确定位,实时完成乘客呼梯请求。In this paper,a continuous multi-speed control scheme for elevator is proposed.The precise locating is implemented by counting high frequency pulses which are generated by optical rotary encoder.The continuous multi-speed control is implemented by PWM speed control as well.The ideal speed and acceleration are determined by on-site testing.The floor positions,flat bed positions and speed switching point are calculated manually.The real-time requirement of precise locating and calling response are met in this scheme.

关 键 词：脉冲定位 PWM调速 电梯控制系统 电梯运曲线 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]