《基于PLC四层电梯控制系统设计-毕业论文》.docVIP

山 东 工 商 学 院 SHANDONG INSTITUTE OF BUSINESS AND TECHNOLOGY 毕业论文(设计) GRADUATION　THESIS　（DESIGN）论文（设计）题目 Title Of Thesis（Design）分院（系别） Department专业 Specialty班级 Class 论文（设计）作者 Author of Thesis（Design） 　　 论文完成日期 Date 论文（设计）指导教师 Advisor 　　 指导教师职称 The Title of AdvisorBased on PLC four layers of elevator control system design张三 Zhang San（Times New Roman三号，居中）2015年 5月 May 2015指导教师对毕业论文（设计）的评语 Advisor’s Comments on Graduation Thesis (Design) 评语：指导教师（签章） 　　Signature of Advisor日期Date评阅人意见 评阅人姓名： 职称： 选项标准： A很同意 B同意 C基本同意 D不同意分 项 评 价 评价项目 A B C D 选 题 质 量 1 选题符合专业培养目标，体现综合训练基本要求2 题目难易适度3 题目工作量适当4 有理论意义或实际价值能 力 水 平 5 查阅文献资料能力强6 综合运用知识能力强7 研究方案的设计能力强8 研究方法和手段的运用能力强9 外文应用能力强成 果 质 量 10 文题相符11 写作水平高12 写作规范13 篇幅适度14 成果有理论或实际价值总体评价： 优 □良 □中 □及格 □不及格 □ 评阅人评语评阅人签字：年 月 日 答辩（评审）委员会意见 Appraisal of Defense Commission 答辩（评审）成绩 Mark of Defense鉴定意见 Appraisal Comments主任（签章）Signature of Dean日期 Date[摘要] 本文介绍一种电梯PLC控制系统。伴随着可编程控制技术的发展，PLC，同时传统控制。 [关键词]S7-200 CPU226 PLC控制 四层电梯Based on PLC four layers of elevator control system design [Abstract] This paper introduces a four layers of elevator control system which is based on PLC．ith the rapid　development of programmable’s technology, PLC applications are continually deepening, while the traditional control test technology is changing with each passing day the design of the PLC as a tool to elevators for various control system. people are strict with control of demand, then the elevator control system　 requirements to steady, accurate and fastThe system is mainly composed of PLC, the logic control circuit．The contact device carries on the control, its shortcoming is the electronic contact are many, failure rate high, reliability bad, service work load big and so on, but uses the PLC composition the control system to be possible to solve the above problem well, causes the elevator movement to be safer, to be convenient, is comfortable. Through debugging Siemens PLC debugging software, we find that the system mee