跪求 高人 帮忙 把 电梯控制系统的设计摘要 翻译成英文

Pick to 】 along with our country's high-speed economic development,microelectronics technology,computer technology and automatic control technology also have developed rapidly,ac variable-frequency regulating speed technology has entered into a new era,with its used more and more widely.And as a modern high-rise buildings elevator vertical transportation,is closely related to people's lives,as people to improve its request,elevator obtained fast development,the technology have to drag speed,its logic FM surge by PLC control also replace original relay control.This paper introduces four layers with PLC four stations of elevator control system,and gives the detailed design of the system design process,I/O scheme,and the corresponding
Ladder-diagram control procedures.
【 keywords 】 elevator control; Programmable controller; ladder-diagram