【正文】 分類及比較 ............................................. 6 單電壓驅動 ................................................................. 6 高低壓驅動 ................................................................. 7 自激式恒電流斬波驅動 ............................................... 8 它激式恒電流斬波驅動 ............................................... 8 細分驅動 ..................................................................... 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 反應式步進電機 .........................................................14 IV 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 外圍電路設計 ......................................................................27 顯示電路 — LC D1602 ..................................................27 鍵盤電路 ....................................................................34 看門狗復位電路 .........................................................36 驅動電路 — L298N ......................................................38 電源電路 ....................................................................41 第 5 章 系統(tǒng)軟件設計 ..................................................................... 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 .................................................................................... 52 V 結論 .....................................................................................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 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 operation of the principle of stepping motor on .......15 Chapte r 3 ste ppe r motor control syste m ove rvie w ........................17 stepper motor control system.................................................17 The characteristics and function of the system ......................20 C haracteristics of the sy