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1、学号： （宋体 五号 粗体） 常 州 大 学毕业设计（论文）外文翻译Elevator System Based on PLC外文题目 Elevator System Based on PLC 译文题目 （宋体 四号 粗体） 外文出处 （四号 粗体） 学 生 （宋体 四号 粗体） 学 院 （宋体 四号 粗体） 专 业 班 级 （宋体 四号 粗体）校内指导教师 （宋体 四号 粗体）专业技术职务 （宋体 四号 粗体）校外指导老师 （宋体 四号 粗体）专业技术职务 （宋体 四号 粗体）二18年4月Elevator System Based on PLCAbstractPeng D. The Appli
2、cation of PLC in Elevator Control SystemJ. Journal of Nanchang Institute of Aeronautical Technology, 2000.With the development of Chinas economy, PLC applications are constantly popular, while driving the traditional control of the update, its application is extremely extensive. The elevator as a mo
3、dern high-rise building a means of transport, and peoples lives are inseparable, with the improvement of peoples living standards, the elevator running safety, efficiency, comfort and other requirements also rose, making the elevator got Rapid development, the current way of controlling the elevator
4、 commonly used in two ways, one is composed of traditional relay control system; the second control method is to replace the PLC with programmable logic controller control system. The purpose of this design is to compare the advantages and disadvantages of the control system composed of the traditio
5、nal relay and the control system of the PLC. The advantages of the PLC are reflected, and the S7-200 PLC is used to control the elevator, and the programming language is used to realize the Elevator automatic operation of the control function, which greatly improve the reliability of the elevator.Pr
6、ogrammable controller (PLC) because of its simple structure, high reliability and easy maintenance, etc., can be very good for elevator control. Through the use of programmable controller S7-200 PLC control four-story elevator work, intuitive description of the four-story elevator PLC control system
7、 design method. Details of the four-story elevator through the PLC design requirements, the specific list of the input and output points, and gives the system ladder design.Key words: Programmable control devices；S7-200；PLC；Four-story elevatorComposed by the order of relay control system is a realiz
8、ation of the first elevator control method. However, to enter the nineties, with the development of science and technology and the widespread application of computer technology, the safety of elevators, reliability of the increasingly high demand on the relay control weaknesses are becoming evident.
9、Elevator control system relays the failure rate high, greatly reduces the reliability and safety of elevators, and escalators stopped often to take with the staff about the inconvenience and fear. And the event rather than taking the lift or squat at the end of the lift will not only cause damage to
10、 mechanical components, but also personal accident may occur.Programmable Logic Controller (PLC) is the first order logic control in accordance with the needs of developed specifically for industrial environment applications to operate the electronic digital computing device. The PLC biggest charact
11、eristics lie in: The electrical engineering teacher already no longer electric hardware up too many calculations of cost, as long as order the importation that the button switch or the importation of the sensors order to link the PLC up can solve problem, pass to output to order the conjunction cont
12、act machine or control the start equipments of the big power after the electric appliances, but the exportation equipments direct conjunction of the small power can.PLC internal containment have the CPU of the CPU, and take to have an I/ O for expand of exterior to connect a peoples address and savi
13、ng machine three big pieces to constitute, CPU core is from an or many is tired to add the machine to constitute, mathematics that they have the logic operation ability, and can read the procedure save the contents of the machine to drive the homologous saving machine and I/ Os to connect after pass
14、 the calculation; The I/ O add inner part is tired the input and output system of the machine and exterior link, and deposit the related data into the procedure saving machine or data saving machine; The saving machine can deposit the data that the I/ O input in the saving machine, and in work adjus
15、ting to become tired to add the machine and I/ O to connect, saving machine separately saving machine RAM of the procedure saving machine ROM and dates, the ROM can do deposit of the data permanence in the saving machine, but RAM only for the CPU computes the temporary calculation usage of hour of b
16、uffer space.The PLC anti- interference is very and excellent, our root need not concern its service life and the work situation bad, these all problems have already no longer become the topic that we fail, but stay to our is a concern to come to internal resources of make use of the PLC to strengthen the c
