【正文】 sitioning or synchronous operation of open loop state. By controlling the number of pulses to achieve send accurate displacement or angle position control, and sending the pulse frequency to achieve the speed regulation, the microcontroller as a control core control system because it can get excellent control results, obtained the widespread application. But some control system design is more plex and investment is not the economy, some systems can not do very flexible, the use is not very convenient, interactivity is not strong. Therefore the research content of this paper is to design a set of hardware and software bination of system is simple, economic, but the function is more plete, strong adaptability, convenient operation, strong interactivity, the single chip puter technology and motor driver technology is bined with the step motor control system. This paper briefly d escribes the stepper motor current situation and development trend, and the reaction of the working principle of stepper motor to achieve, through the keyboard input data, realtime working model of stepping motor is arranged, realizes to the stepping motor rotation speed and direction control, the speed in the digital tube display e out. And its simple application. Key words : Stepping motor Singlechip microputer 1 目錄 第 1 章 緒論 ......................................................................................................................... 1 引言 .......................................................................................................................... 1 國內(nèi)外研究狀況 ...................................................................................................... 2 研究內(nèi)容和結(jié)構(gòu)安排 .............................................................................................. 3 第 2 章 步進(jìn)電機(jī)控制系統(tǒng)概述 ......................................................................................... 4 步進(jìn)電機(jī)概述 ......................................................................................................... 4 步進(jìn)電機(jī)的優(yōu)缺點(diǎn) ....................................................................................... 4 步進(jìn)電機(jī)的分類 ........................................................................................... 4 反應(yīng)式步進(jìn)電機(jī)工作原理 ........................................................................... 4 步進(jìn)電機(jī)控制系統(tǒng)簡介 ......................................................................................... 5 系統(tǒng)功能 .................................................................................................................. 7 第 3 章 系統(tǒng)硬件設(shè)計 ......................................................................................................... 8 系統(tǒng)組成 ................................................................................................................. 8 系統(tǒng)核心 ——AT89C51 .......................................................................................... 8 AT89C51 簡介 ................................................................................................ 8 系統(tǒng)端口分配 .............................................................................................. 11 外圍電路設(shè)計 ........................................................................................................ 11 顯示電路設(shè)計 .............................................................................................. 12 數(shù)碼管的驅(qū)動電路 ...................................................................................... 12 鍵盤電路設(shè)計 .............................................................................................. 13 驅(qū)動電路 ................................................................................................................ 14 硬件總體實(shí)現(xiàn) ........................................................................................................ 14 第 4 章 系統(tǒng)軟件設(shè)計 ....................................................................................................... 16 系統(tǒng)軟件主流程 .................................................................................................... 16 系統(tǒng)初始化流程 .................................................................................................... 17 系統(tǒng)待機(jī)運(yùn)行流程 ................................................................................................ 17 系統(tǒng)待機(jī)運(yùn)行主流程 .................................................................................. 17 2 待機(jī)狀態(tài)按鍵子程序流程 .......................................................................... 18 待機(jī)狀態(tài)數(shù)碼管掃描程序流程 .................................................................. 18 步進(jìn)電機(jī)運(yùn)行模塊主流程 .................................................................................... 19 連續(xù)運(yùn)行模式模塊流程 ........................................................................................ 20 預(yù)置步數(shù)運(yùn)行模式模塊流程 ................................................................................ 21 定時器 0 中斷 (步進(jìn)脈沖輸出 )模塊流程 .............................................................. 22 系統(tǒng) Proteus 仿真 ................................................................................................. 23 Proteus 軟件簡介 ......................................................................................... 23 電路仿真 ..................................................................................................... 25 第 5 章 步進(jìn)電機(jī)控制系統(tǒng)的應(yīng)用 ................................................................................... 28 應(yīng)用系統(tǒng)的其他硬件需求及組成 ....................................................................... 28 應(yīng)用系統(tǒng)的硬件需求 .................................................................................. 28 系統(tǒng)組成 ...................................................................................................... 29 系統(tǒng)主流程圖 ....................................................................................................... 29 升旗與降旗流程 ...................................