外文翻譯--步進(jìn)電機(jī)運(yùn)動(dòng)控制系統(tǒng)設(shè)計(jì)-其他專業(yè)-資料下載頁(yè)
【導(dǎo)讀】步進(jìn)電機(jī)是將電脈沖信號(hào)轉(zhuǎn)變?yōu)榻俏灰苹蚓€位移的開(kāi)環(huán)控制元件。這一線性關(guān)系的存在，加上步進(jìn)電機(jī)只有周期性的誤差而無(wú)累積誤差等特點(diǎn)。在本設(shè)計(jì)方案中采用AT89C51型單片機(jī)內(nèi)部的定時(shí)器改變CP脈沖的頻率從而實(shí)現(xiàn)對(duì)步進(jìn)電機(jī)的轉(zhuǎn)速進(jìn)行控制，實(shí)現(xiàn)電機(jī)調(diào)速與正反轉(zhuǎn)的功能。以后經(jīng)過(guò)不斷改良，使得今日步進(jìn)電機(jī)已廣泛運(yùn)用在需要高定位精度、高分解性能、高響應(yīng)性、信賴性等靈活控制性高的機(jī)械系統(tǒng)中。 步進(jìn)電機(jī)是將電脈沖信號(hào)變換成角位移或直線位移的執(zhí)行部件?！”敬卧O(shè)計(jì)以CPU選用89C5l作為步進(jìn)電機(jī)的控制芯片．89C51的結(jié)構(gòu)簡(jiǎn)單并可以在編程器上實(shí)現(xiàn)閃爍式的電擦寫達(dá)幾萬(wàn)次以上．使用方便等優(yōu)點(diǎn)，而且完全兼容MCS5l系列單片機(jī)的所有功能。該器件采用ATMEL高密度非易失存儲(chǔ)器制造技術(shù)制造，與工業(yè)標(biāo)準(zhǔn)的MCS-51指令集和輸出管腳相兼容。由于將多功能8位CPU和閃爍存儲(chǔ)器組合在單個(gè)芯片中，ATMEL的AT89C51是一種高效微控制器，為很多嵌入式控制系統(tǒng)提供了一種靈活性高且價(jià)廉的方案
【正文】 on the internal microcontroller timer to achieve, in each time into the timer interrupt, the change from time to time constants, and thus speed up time to pulse frequency gradually increased, when slowing down to make pulse frequency gradually decreases This method take up CPU time, less can be achieved in a variety of MCU is a more practical method of speed control.Determination of Control A result of this the design requirements, selection of threephase threebeat stepping motor, use 89C51 microcontroller as a controller. Select the used 8279 to drive the display and keyboard. Use 8713 as the stepper motor driver chip through the optical coupling to drive a stepper motor. And then because of stepper motor coaxial optical encoder as a feedback ponent, and to the signal fed back by the CPU processing, then displayed by the monitor. However, the speed value from the keyboard input through the display to show the terrible, the strengths of two rows of subdesign to show a row to show a row of a given speed to show the actual speed. Microcontroller Selection The design for CPU use 89C5l as a stepper motor control chip. 89C5139。s structure is simple and can be implemented on the programmer type of electrical erasable flash reaches tens of thousands or more times. The advantages of ease of use, and is fully patible with all the features of MCS5l series of microcontrollers. AT89C51 is a kind of 4K bytes of flash erasable programmable readonly memory (FPEROMFAlsh ProgrAmmABle And ErAsABle ReAd Only Memory) of the lowvoltage, highperformance CMOS8bit microprocessors, monly known as microcontrollers. The device uses highdensity nonvolatile memory ATMEL manufacturing technology manufacturing, and industrystandard MCS51 instruction set and output pins are patible. Owing to the multifunction 8bit CPU and flash memory bined in a single chip, ATMEL The AT89C51 is a highly effective microcontrollers, embedded control systems for many provides a high degree of flexibility and low cost programs 指 導(dǎo) 教 師 評(píng) 語(yǔ) 外文翻譯成績(jī)：指導(dǎo)教師簽字： 年 月 日注：1. 指導(dǎo)教師對(duì)譯文進(jìn)行評(píng)閱時(shí)應(yīng)注意以下幾個(gè)方面：①翻譯的外文文獻(xiàn)與畢業(yè)設(shè)計(jì)（論文）的主題是否高度相關(guān)，并作為外文參考文獻(xiàn)列入畢業(yè)設(shè)計(jì)（論文）的參考文獻(xiàn)；②翻譯的外文文獻(xiàn)字?jǐn)?shù)是否達(dá)到規(guī)定數(shù)量（3 000字以上）；③譯文語(yǔ)言是否準(zhǔn)確、通順、具有參考價(jià)值。2. 外文原文應(yīng)以附件的方式置于譯文之后。第 6 頁(yè) 共7 頁(yè)
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