Question

请英语达人帮忙翻译一下这段文字，谢谢了~~~·

以下是要翻译的内容，其中的专业词汇可不翻译，直接用汉语。可以意译~~~谢谢了：
基于PLC的电梯控制系统设计
随着城市建设的不断发展，高层建筑不断增多，电梯在国民经济和生活中有着广泛的应用。电梯作为高层建筑中垂直运行的交通工具已与人们的日常生活密不可分。实际上电梯是根据外部呼叫信号以及自身控制规律等运行的，而呼叫是随机的，电梯实际上是一个人机交互式的控制系统，单纯用顺序控制或逻辑控制是不能满足控制要求的，因此，电梯控制系统采用随机逻辑方式控制。
目前电梯的控制普遍采用了两种方式，一是采用微机作为信号控制单元，完成电梯信号的采集、运行状态和功能的设定，实现电梯的自动调度和集选运行功能，拖动控制则由变频器来完成；第二种控制方式用可编程逻辑控制器（PLC）取代微机实现信号集选控制。从控制方式和性能上来说，这两种方法并没有太大的区别。然而第二种方式更为普遍的被应用，其原因在于PLC可靠性高，程序设计方便灵活，抗干扰能力强、运行稳定可靠等特点，所以现在的电梯控制系统广泛采用可编程逻辑控制器（PLC）来实现。
在此次设计中，采用了可编程序逻辑控制器（PLC）对电梯系统进行控制。在了解电梯系统以及可编程序逻辑控制器（PLC）的基本结构和工作原理之后，严格按照PLC控制系统设计原则及步骤进行控制系统设计。首先根据控制系统的控制要求统计I/O点数；其次，进行PLC硬件选型及I/O地址分配；最后设计出控制系统软件程序，最电梯控制系统进行控制。

Answer 1

PLC-based elevator control system design
With the continuous development of urban construction, the increasing high-rise buildings, elevators and life in the national economy has a broad application. Elevator high-rise buildings as a means of transport in the vertical run of daily life has been inextricably linked with people. In fact the lift is based on external call control signals, as well as the laws of their own, such as running, and the call is random, the lift is actually a man-machine interactive control system, simple to use control or logic control order can not meet the control requirements, and therefore , elevator control system uses a random control logic.
Elevator control is currently generally used in two ways, first, the use of computer as a signal control unit, the completion of the lift signal acquisition, operation and function of the set, to achieve the lift and set the automatic scheduling function to run the election, drag the control from inverter to complete; the second control using a programmable logic controller (PLC) to replace the computer control signal sets the election. From the control and performance, these two types of methods and there is no significant difference. However, the second approach be applied more generally, because the PLC high reliability, convenient and flexible program design, anti-interference ability, stable and reliable operation of the characteristics of
Therefore, the elevator control system is now widely used in programmable logic controller (PLC) to achieve.
In this design, the use of a programmable logic controller (PLC) on the elevator control system. To understand the elevator system, as well as programmable logic controllers (PLC) of the basic structure and working principle, the PLC control system in strict accordance with the principles and procedures designed to control system design. First of all, the control of control system in accordance with requirements of statistical I / O points; Secondly, the PLC hardware selection and I / O address assignment; the final control system design software program, the most control of elevator control system.