基于可容錯(cuò)串行通訊的電機(jī)控制系統(tǒng)的研發(fā)（下位機(jī)）

電氣自動(dòng)化論文編號(hào):ZD967    論文字?jǐn)?shù):13835,頁(yè)數(shù):36

目錄
摘  要 II
1  緒 論 1
1.1  研究背景 1
1.2  研究任務(wù)與目標(biāo) 2
2 硬件設(shè)計(jì) 3
2.1 主要器件簡(jiǎn)介 3
2.1.1  單片機(jī)AT89C51 3
2.1.2　PWM電機(jī)調(diào)速介紹 5
2.1.3　PWM控制原理 6
2.1.4  IGBT介紹 7
2.1.5  EXB841介紹 12
2.1.6  max232資料簡(jiǎn)介 16
2.1.7  TTL電平、CMOS電平、RS232電平 16
2.1.8  電平的轉(zhuǎn)換 18
2.2 系統(tǒng)各單元電路組成及原理分析 19
2.2.1 電源模塊的制作 19
2.2.2 驅(qū)動(dòng)模塊 20
2.2.3 電機(jī)整流電路 21
2.2.4 按鍵模塊及LED顯示模塊 22
2.2.5 單片機(jī)復(fù)位和時(shí)鐘電路 24
2.2.6 復(fù)位狀態(tài)和復(fù)位電路設(shè)計(jì) 24
3　軟件設(shè)計(jì) 26
3.1　主要程序設(shè)計(jì)思路 26
3.1.1  主程序流程圖 26
3.1.2　PWM發(fā)生程序流程圖 27
3.1.3  鍵處理流程圖 28
4 結(jié)論 29
致 謝 30
參考文獻(xiàn) 31

摘  要
 隨著時(shí)間的推移，計(jì)算機(jī)革命的完成，信息高速公路的飛速發(fā)展，工業(yè)生產(chǎn)已經(jīng)和自動(dòng)化控制密不可分了。二十世紀(jì)八十年代以來(lái)，國(guó)際上單片機(jī)發(fā)展迅速，單片機(jī)應(yīng)用不斷深入，新技術(shù)層出不窮。單片機(jī)的應(yīng)用技術(shù)是一項(xiàng)相對(duì)較新的工程技術(shù)，其內(nèi)涵隨著單片機(jī)的發(fā)展而發(fā)展。在電機(jī)控制方面，單片機(jī)不僅發(fā)揮了體積小，易于控制等優(yōu)勢(shì)，而且價(jià)格也比其它微控制器或PC機(jī)低廉。單片機(jī)的另一優(yōu)勢(shì)，就是可以嵌入到各種儀器、設(shè)備中，這一點(diǎn)是巨型機(jī)和網(wǎng)絡(luò)所難以做到的。本設(shè)計(jì)的可容錯(cuò)串行通訊的電機(jī)控制系統(tǒng)下位機(jī)部分，該設(shè)計(jì)既能單獨(dú)對(duì)直流電機(jī)實(shí)現(xiàn)啟/停、加/減速、故障報(bào)錯(cuò)等功能，也可通過接受上位PC機(jī)指令來(lái)完成以上功能。此系統(tǒng)不僅發(fā)揮了單片機(jī)體積小，價(jià)格低廉，更切合底層控制等優(yōu)勢(shì)，也彌補(bǔ)了單片機(jī)系統(tǒng)人機(jī)界面相對(duì)簡(jiǎn)單，較難進(jìn)行大量數(shù)據(jù)相對(duì)復(fù)雜的運(yùn)算，具有一定的實(shí)用價(jià)值。

關(guān)鍵詞：?jiǎn)纹瑱C(jī)、串行通訊、PC機(jī)、直流電機(jī)

Abstract
Over time, the completion of the computer revolution, the rapid development of information highway, industrial control and automation of production has been closely linked. Since the eighties the twentieth century, the rapid development of the international single-chip, single-chip applications in depth, an endless stream of new technologies. Application of single-chip technology is a relatively new engineering technology, with its connotations of the development of SCM. In motor control, the single chip not only played a small, easy to control, superiority, and the price than any other micro-controller or PC-low. Another advantage of single-chip, that is, can be embedded into a variety of apparatus, equipment, supercomputers and it is difficult network. The design of fault-tolerant serial communication system of the motor control part of digital machines, the design of the DC motor can achieve alone on / off, increase / reduce speed, fault error functions, but also through the acceptance of PC-PC to complete the above instructions function. This system not only played a small single-chip, low cost, more in line with the bottom edge control, but also to make up for the single-chip systems are relatively simple man-machine interface, it is rather difficult to carry out a large amount of data is relatively complex operations, has a certain practical value.

Keywords：Microcontroller, serial communication, PC machines, DC motors