【正文】 子是由軟磁材料制成的，轉(zhuǎn)子中沒(méi)有繞組。具體安排如下 : 第一章為緒論，介紹了步進(jìn)電機(jī)的應(yīng)用和發(fā)展的歷史，然后介紹了步進(jìn)電機(jī)常見(jiàn)的控制系統(tǒng) 方案和常見(jiàn)的驅(qū)動(dòng)方案，了解各種方案的優(yōu)缺點(diǎn)，提出自己的思路和設(shè)計(jì)目的。 細(xì)分驅(qū)動(dòng)器工作在 10 細(xì)分狀態(tài) 176。 [8] 它激式恒電流斬波驅(qū)動(dòng) 為了解決自激式斬波頻率可變引起的浪涌電壓?jiǎn)栴}，可在 D 觸發(fā)器加一個(gè)固定頻率的時(shí)鐘。以下是這幾種驅(qū)動(dòng)方式的比較。用軟件代替環(huán)形分配器，通過(guò)對(duì)單片機(jī)的設(shè)定，用同一種電路實(shí)現(xiàn)了多相步進(jìn)電機(jī)的控制和驅(qū)動(dòng)，大大提高了接口電路的靈活性和通用性 ?？刂葡到y(tǒng)采用 PLC 來(lái)產(chǎn)生控制脈沖。 some systems in the operation is not very convenient, do not have a strong interaction. So the research contents of this thesis is to design a set of hardware system is simple, economic, but the function is plete, strong adaptability, convenient o peration, high reliability, can anically integrate electronic technology, single chip technology, motor control technology of stepping motor control system. This paper briefly describes the development of the scheme, the stepper motor applications, as well as the mon control system, driving technology III is mon, but also analyzed the working principle of stepping motor, and then by the microcontroller. The hardware design scheme of the system, detailed design on the basis of each module the circuit, t hen expounds the stepping motor control software development process. Keywords: stepper motor microcontroller watchdog driver technology 目錄 摘 要 ................................................................................................I ABS TRAC ........................................................................................ II 第 1 章 緒論 ...................................................................................... 1 前言 ...................................................................................... 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(shuō)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(pán)電路 ....................................................................34 看門(mén)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(pán)流程圖 ..................................................................47 待機(jī)狀態(tài)下鍵盤(pán)操作流程 ..........................................47 連續(xù)運(yùn)行模式狀態(tài)下鍵盤(pán)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 ...........................................................................