高空液压驱动作业平台的控制系统设计研究.doc

摘 要 高空作业车大量应用于市政建筑、工厂、园林、机场等场所，从事消防、抢险救灾、安装 、维护等工作。本文是以蜘蛛车为模型，熟悉分析该车的各种动作功能，在此基础上进行高空作业车电气控制系统的设计与研究，根据设计要求，本设计采用西门子S7-300作为集中控制，通过各种传感器完成对信号的采集，处理信号完成后发送给各执行机构，高空作业车的各个动作之间实现限位与安全互锁。 论文第一章首先介绍了高空作业车的应用方面，发展历程，国内外发展现状及发展方向，总结了国内外的水平差距，然后介绍了课题的来源和此次研究的主要内容。 论文的第二章主要介绍了高空作业车整体的结构及框架，给定了作业车基本的工作参数，分析了各个组成部分的动作原理和动作关系，用图解的方式解释了整车主要元件的用途和名称，在不同的工作和控制方式下，实现安全互锁，给出了高空作业车的负载曲线，详细介绍了各个控制面板的各个开关的作用及操作方式，各指示灯的作用。并在附图标出了元器件的详细位置，明确作业车的工作状态及危险状况，为下一步电气系统的设计做好准备工作。 设计的核心是围绕控制器西门子PLC S7-300设计电气控制系统，仔细分析液压原理图，并进行各动作部分相对应的电路设计，通过程序完成对作业车的实时监控，系统要求的控制量较多，因此使用了很多传感器卡，很多信号是经传感器卡处理后得到相应的开关量或模拟量输入PLC，经反复修改，最后将程序输入，进行调试，基本上达到了设计题目的要求。 关键词：高空作业车，S7-300 ，仿真，传感器 ABSTRACT The aerial platform is used in municipal constructions, factories, airports widely which works for fire-fighting ,installation, maintenance, also deals with emergency. This study researches the electric control system for the aerial platform based on the analysis of all movements and functions. According to the request, this study uses SIEMEN S7-300 PLC as the central controller and collects all kinds of signals, then, transmits them to executing agencies after processing. Each movement of the aerial platform can limit and lock. The first chapter introduces the application, development course, current situation at home and abroad , outlook and concludes the gap of home and abroad, then introduces the problem source and main content of the research. The second chapter mainly introduces the whole structure and frame, gives the basic parameter ,analyzes the movement principle and relationship of each section ,explains the name and the use of main elements. It can also realize limit and lock, draw the movement curve at different working and controlling method. Besides that, the use and operating method of each switch and indictors in every control panel are introduced in details, the specific positions of elements are marked in the pictures，the work condition and dangerous situation are fixed which are prepared for the fu