【正文】 ....... 1 基于 PLC/變頻器控制手段 ............................................ 2 基于單片機控制手段 ..................................................... 3 國內(nèi)外發(fā)展情況 ...................................................................... 4 步進電機驅(qū)動方式分類及比較 ............................................... 6 單電壓驅(qū)動 .................................................................... 6 高低壓驅(qū)動 .................................................................... 7 自激式恒電流斬波驅(qū)動 ................................................. 8 它激式恒電流斬波驅(qū)動 ................................................. 8 細分驅(qū)動 ........................................................................ 9 研究的目的和意義 .................................................................10 論文安排 ................................................................................. 11 第 2 章 步進電機概述 .........................................................................13 步進電機的特點 .....................................................................13 步進電機的分類 .....................................................................14 反應(yīng)式步進電機 ...........................................................14 永磁式步進電機 ...........................................................14 混合式步進電機 ...........................................................14 步進電機的運行原理闡述 ......................................................15 第 3 章 步進電機控制系統(tǒng)概述 .........................................................17 步進電機控制系統(tǒng)簡介 ..........................................................17 本系統(tǒng)特點與功能 .................................................................20 本系統(tǒng)特點 ...................................................................20 系統(tǒng)功能 .......................................................................21 第 4 章 系統(tǒng)硬件設(shè)計 .........................................................................22 系統(tǒng)組成 ................................................................................22 系統(tǒng)核心 —— AT89C51 單片機 ..............................................22 主要特性 ......................................................................23 管腳說明 ......................................................................23 振蕩器特性 ...................................................................25 芯片擦除 .......................................................................25 最小系統(tǒng) ......................................................................26 外圍電路設(shè)計 .........................................................................27 顯示電路 — LCD1602 ....................................................27 IV 鍵盤電路 .......................................................................34 看門狗復(fù)位電路 ...........................................................36 驅(qū)動電路 — L298N ........................................................38 電源電路 .......................................................................41 第 5 章 系統(tǒng)軟件設(shè)計 .........................................................................43 系統(tǒng)軟件主流程圖 .................................................................43 系統(tǒng)初始化流程圖 .................................................................44 步進電機運行模塊主流程圖 ..................................................45 系統(tǒng)顯示流程圖 .....................................................................46 系統(tǒng)鍵盤流程圖 .....................................................................47 待機狀態(tài)下鍵盤操作流程 ...........................................47 連續(xù)運行模式狀態(tài)下鍵盤操作流程 ............................49 第 6 章 總結(jié) ........................................................................................52 結(jié)論 ........................................................................................52 參考文獻 ..............................................................................................54 致謝 ......................................................................................................56 附錄 1:部分系統(tǒng)程序清單 ..................................................................57 附錄 2:系統(tǒng)圖 ......................................................................................59 V CONTENTS ABSTRACT ........................................................................................... I ABSTRACT .......................................................................................... II Chapte r1 introduction ..........................................................................1 preface ...................................................................................... 1 Electronic circuit control method based on .................... 1 By means of control based on PLC\/ inverter ................. 2 Based on MCU control ................................................... 3 domestic and foreign development ........................................... 4 stepper motor drive mode classification and parison of..... 6 single voltage drive ........................................................ 6 high and low voltage drive ............................................. 7 selfexcited constant current chopper drive.................... 8 excitation type constant current chopper drive............... 8 subdivision drive ............................................................ 9 the purpose and significance of the study ...............................10 The paper ................................................................................. 11 Chapte r2 outlines the ste p motor ...................................................... 13 stepper motor features .............................................................13 stepper motor classification.....................................................14 reaction stepping motor .................................................14 permanent mag stepper motor ...................................14 The hybrid stepping motor.............