【正文】 因此得重新設(shè)計(jì)控制器。 畢業(yè)設(shè)計(jì) (論文 ) 學(xué)生姓名 學(xué) 號(hào) 所在學(xué)院 自動(dòng)化與電氣工程學(xué)院 專 業(yè) 自動(dòng)化 課 題 基于單片機(jī)控制的步進(jìn)電機(jī)調(diào)速系統(tǒng)的 設(shè)計(jì) 指導(dǎo)老師 I 基于單片機(jī)控制的步進(jìn)電機(jī)調(diào)速系統(tǒng)的設(shè)計(jì) 摘 要 步進(jìn)電機(jī)是一種利用電脈沖進(jìn)行控制且將電脈沖信號(hào)轉(zhuǎn)換成相位移的電機(jī)。 關(guān)鍵詞 ：步進(jìn)電機(jī) 單片機(jī) 調(diào)速系統(tǒng) II Based on single chip microputer control stepping motor speed control system design Abstract Stepper motor is a pulse control, electric pulse signal phase shift motor. Stepper motor is a pulse of each to a fixed rotation angle, this can be achieved by controlling the stepper motor is a pulse to the next pulse time interval to change the frequency of the pulses, the delay to control the length of the stepping angle to vary the speed of the motor, thus realizing the stepper motor speed control. The main content as follows: (1) This research is based on STC89C52 SCM models, careful analysis of all parameters of the STC89C52 and pin function, according to online data to study the mon construction of the hardware circuit. After familiar with STC89C52 singlechip microputer and peripheral circuit, the choice of mon and reasonable price of peripheral hardware. All hardware after the selection, use protel99 se map module circuit diagram as well as the overall system circuit diagram, then check, finally using physical hole hole plate welding MCU, so far all hardware preparation work pleted. (2) Followed by the software design, program flow chart of the first picture, and then use th Key words： Stepbystep electric motor Monolithic machine Speed regulation system 目錄 III 目錄 摘要 .................................................................................................................................................I Abstract....................................................................................................................................... II 第一章 緒論 ............................................................................................................................... 1 本課題研究背景、目的及意義 ...............................................................................................1 本課題國(guó)內(nèi)外研究現(xiàn)狀和發(fā)展趨勢(shì) ........................................................................................1 本課題擬采用的研究手段 ......................................................................................................2 第二章 步進(jìn)電機(jī)簡(jiǎn)介 ............................................................................................................ 3 步進(jìn)電機(jī)概念 ........................................................................................................................3 步進(jìn)電機(jī)分類 ........................................................................................................................3 步進(jìn)電機(jī)特點(diǎn) ........................................................................................................................3 步進(jìn)電機(jī)工作原理 .................................................................................................................4 步進(jìn)電機(jī)的基本參數(shù) .............................................................................................................4 空載啟動(dòng)頻率 ..............................................................................................................4 電機(jī)固有步距角 ...........................................................................................................4 步進(jìn)電機(jī)的相數(shù) ...........................................................................................................4 保持轉(zhuǎn)矩 .....................................................................................................................5 步進(jìn)電機(jī)詳細(xì)調(diào)速原理 ..........................................................................................................5 第三章 硬件電路設(shè)計(jì) ............................................................................................................ 6 基本的方案確定 ....................................................................................................................6 單片機(jī)的選擇： STC89C52 ....................................................................................................7 STC89C52 概述 ............................................................................................................7 STC89C52 特性 ............................................................................................................7 STC89C52 參數(shù) ............................................................................................................8 STC89C52 引腳功能 .....................................................................................................8 液晶顯示器的選擇： LCD12864 ........................................................................................... 10 LCD12864 概述 .......................................................................................................... 10 LCD12864 特性 .......................................................................................................... 10 目錄 IV LCD12864 參數(shù) .......................................................................................................... 10 LCD12864 引腳功能 ................................................................................................... 11 步進(jìn)電機(jī)驅(qū)動(dòng)芯片選擇： ULN2020 ...................................................................................... 12 ULN2020 概述 ............................................................................................................ 12 ULN2020 參數(shù) ............................................................................................................ 13 ULN2020 引腳功能 ..................................................................................................... 14 步進(jìn)電機(jī)選擇： 28BYJ48(四相八拍的步進(jìn)電機(jī) ) ................................................................... 15 28BYJ48 概述 ........................................................................................