【正文】 .................................... 1 基于電子電路控制手段 ............................................... 1 基于 PLC /變頻器控制手段 ........................................... 2 基于單片機(jī)控制手段 ................................................... 3 國(guó)內(nèi)外發(fā)展情況 ................................................................... 4 步進(jìn)電機(jī)驅(qū)動(dòng)方式分類及比較 ............................................. 6 單電壓驅(qū)動(dòng) ................................................................. 6 高低壓驅(qū)動(dòng) ................................................................. 7 自激式恒電流斬波驅(qū)動(dòng) ............................................... 8 它激式恒電流斬波驅(qū)動(dòng) ............................................... 8 細(xì)分驅(qū)動(dòng) ..................................................................... 9 研究的目的和意義 ..............................................................10 論文安排 ............................................................................. 11 第 2 章 步進(jìn)電機(jī)概述 ..................................................................... 13 步進(jìn)電機(jī)的特點(diǎn) ..................................................................13 步進(jìn)電機(jī)的分類 ..................................................................14 反應(yīng)式步進(jìn)電機(jī) .........................................................14 IV 永磁式步進(jìn)電機(jī) .........................................................14 混合式步進(jìn)電機(jī) .........................................................14 步進(jìn)電機(jī)的運(yùn)行原理闡述 ...................................................15 第 3 章 步進(jìn)電機(jī)控制系統(tǒng)概述 ...................................................... 17 步進(jìn)電機(jī)控制系統(tǒng)簡(jiǎn)介 .......................................................17 本系統(tǒng)特點(diǎn)與功能 ...............................................................20 本系統(tǒng)特點(diǎn) ................................................................20 系統(tǒng)功能 ....................................................................21 第 4 章 系統(tǒng)硬件設(shè)計(jì) ..................................................................... 22 系統(tǒng)組成 .............................................................................22 系統(tǒng)核心 —— AT89C51 單片機(jī) ............................................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(jì) ......................................................................27 顯示電路 — LC D1602 ..................................................27 鍵盤電路 ....................................................................34 看門狗復(fù)位電路 .........................................................36 驅(qū)動(dòng)電路 — L298N ......................................................38 電源電路 ....................................................................41 第 5 章 系統(tǒng)軟件設(shè)計(jì) ..................................................................... 43 系統(tǒng)軟件主流程圖 ...............................................................43 系統(tǒng)初始化流程圖 ..............................................................44 步進(jìn)電機(jī)運(yùn)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(jī)狀態(tài)下鍵盤操作流程 ..........................................47 連續(xù)運(yùn)行模式狀態(tài)下鍵盤操作流程 ...........................49 第 6 章 總結(jié) .................................................................................... 52 V 結(jié)論 .....................................................................................52 參考文獻(xiàn) ......................................................................................... 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 ABS TRACT ........................................................................................I ABS TRACT ...................................................................................... II Chapte r1 introduction ...................................................................... 1 preface ................................................................................... 1 Electronic circuit control method based on ................... 1 By means of control based on P LC\/ inverter ................ 2 Based on MC U 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 self excited constant current chopper drive ................... 8 excitation type constant current chopper drive .............. 8 subdivis ion 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 ...........................................14 The step ope