基于plc四相步进电机控制.doc

基于PLC四相步进电机的控制 摘 要: 随着步进电机的不断发展， PLC是当前自动化等诸多领域利用最多的控制设施，它使传统的继电器、计算机和通讯技术融合在一起，拥有操作十分方便、控制可靠性高等诸多特点，所以如何更好地使用PLC控制步进电机在工业自动化等多个领域中创造更大的效益变得极为重要。本文采用了28ybj-48四相步进电机，以uln2003作为驱动电路，利用S7-200PLC进行正反转控制，使转动角度更加精确，减小步进电机工作时的抖动，减小误差。 关键词：PLC；步进电机；自动化控制 Four phase stepping motor based on PLC control Abstract: With the continuous?development of?the stepper motor,?PLC is the?automation and other areas?by using the?facilities?of most of the control,?it makes the traditional?relay,?computer?and communication?technology together,?hasconvenient operation,?high reliability?control of?many characteristics,?so?how to make better use of?the PLC?stepper motor control?in many fields?such asindustrial?automation?to create greater efficiency?is very important to?become.This paper?uses 28ybj-48 four?phase stepper motor,?ULN2003 as drive?circuit,positive inversion?control using S7-200PLC,?so that the?rotation angle?is more accurate,?reduce the step?motor working?jitter,?error reduction. Keywords: PLC; stepper motor; automation control 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc394863974 第一章 绪 论 PAGEREF _Toc394863974 \h 1 HYPERLINK \l _Toc394863975 1.1 研究意义 PAGEREF _Toc394863975 \h 1 HYPERLINK \l _Toc394863976 1.2 国内外发展应用情况 PAGEREF _Toc394863976 \h 1 HYPERLINK \l _Toc394863977 1.2.1 步进电机方面 PAGEREF _Toc394863977 \h 1 HYPERLINK \l _Toc394863978 1.2.2 PLC方面 PAGEREF _Toc394863978 \h 2 HYPERLINK \l _Toc394863979 1.3 系统设计的主要任务 PAGEREF _Toc394863979 \h 2 HYPERLINK \l _Toc394863980 第二章 PLC的综述与选择 PAGEREF _Toc394863980 \h 3 HYPERLINK \l _Toc394863981 2.1 PLC的综述 PAGEREF _Toc394863981 \h 3 HYPERLINK \l _Toc394863982 2.1.1 PLC的发展概述 PAGEREF _Toc394863982 \h 3 HYPERLINK \l _Toc394863983 2.1.2 PLC的构成 PAGEREF _Toc394863983 \h 3 HYPERLINK \l _Toc394863984 2.1.3 PLC 应用中需要注意的问题 PAGEREF _Toc394863984 \h 4 HYPERLINK \l _Toc394863985 2.2 西门子s7-200PLC PAGEREF _Toc394863985 \h 4 HYPERLINK \l _Toc394863986 2.2.1 西门子s7-200PLC基本情况 PAGEREF _Toc394863986 \h 4 HYPERLINK \l _Toc39