基于PLC的丝光机控制系统毕业设计说明书 湖南工学院.docVIP

2014届毕业设计说明书 丝光机的PLC控制系统设计 院 、 部： 电气与信息工程学院 学生姓名： 指导教师： 职称 教授 职称 讲师 专 业： 自动化 班 级： 完成时间：  摘 要 近年来，我国纺织工业有了很大的发展，己成为世界上第一纺织大国。丝光机是国内纺织印染行业大量采用的印染设备，由可控交流调速系统实施驱动与控制，因为直流调速系统存在着许多的弊端：比如需要长期维护、可靠性比较低、灵活性比较差、响应速度比较慢、故障停车时间长而且没有故障自检测功能，所以严重影响着生产线上正常的运行。 在本设计提出了基于PLC控制的交流变频调速系统，系统中主令机和各从动机都采用交流电动机，采用高功能性v/f控制的通用变频器,由此构建了一种新型丝光织染系统。本设计的丝光机是对针织物进行丝光处理，织布车间织出的布比较硬且手感不好，另有许多斑点，需要经过一系列处理，如碱洗、去斑点。因为经过浸碱的布，碱性大，则需要用酸中和，丝光机就是完成上述工艺的联合机。 本文首先介绍了国内外印染行业发展的状况，其次介绍电动机调速技术的发展和现状，对丝光机交流变频调速系统的方案进行了论证，再介绍本设计所需硬件的型号和性能，最后，介绍了系统的生产流程、系统的电气结构，硬件配置和软件实现。 关键词：丝光机；可编程控制器；通用变频器；变频调速 ABSTRACT In recent years, Chinas textile industry has made great development, has become the worlds first textile big country. Mercerizer dyeing equipment is extensive use of the domestic textile industry, implementation driven by a controllable AC speed control system, because there are many DC drive system drawbacks: such as the need to maintain long-term reliability is relatively low, relatively poor flexibility , the response is slow, long time and no trouble parking fault self-test function, so seriously affected the normal operation of the production line. In this design proposes PLC AC variable speed control system based on the system from the master machine and the various motives are AC motors, high functionality using a common inverter v / f control, thereby constructed a new silk Zhiran system. The machine is designed silk knitted fabric mercerized, weave cloth weaving workshop relatively hard and feel good, while many spots, need to go through a series of processing, such as caustic, go to spots. Because the base cloth soaked through alkaline big, you need to use an acid neutralization, mercerizing machine is completion of the joint process. This paper describes the status of the development of domestic printing and dyeing industry , then introduces the develo