課程設(shè)計-基于單片機(jī)的電動機(jī)電壓調(diào)節(jié)器設(shè)計與制作(存儲版)
【正文】 alloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. The supersonic descent could happen as early as Sunda. The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。想要的，不想要的， 界限明確，好像沒有什么可以撼動自己。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。s governing body, has also ordered an immediate investigation into the referee39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it. If you are worried about how the time limits apply to you, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。 單片機(jī)課程設(shè)計說明書 16 謝詞 在本次 課程 設(shè)計過程中， 首先 我要特別感謝我們的指導(dǎo)老師 張?zhí)m春張老師 ，然后也對給過我?guī)椭睦蠋焸?和同學(xué)們 表示感謝。就單單 修改 程序就花了我們好幾天的時間，不行再改再調(diào)試。暫存轉(zhuǎn)換結(jié)果 CLR OE 。 程序 設(shè)計流程圖 圖 程序設(shè)計 LED_0 EQU 30H 。 8 位 AD 轉(zhuǎn)換器 三態(tài) 輸出 鎖存 器緩 沖器 通路轉(zhuǎn)換開關(guān) 通路地址鎖存譯碼器 IN0～I(xiàn)N7 A B C ALE 1～8 VCC GND OE V V+ START CLK 單片機(jī)課程設(shè)計說明書 8 （ 9） VR（＋）、 VR（－）：分別為基準(zhǔn)電源的正、負(fù)輸入端。一般向此引腳輸入一個正脈沖，上升沿復(fù)位內(nèi)部逐次逼近寄存器，下降沿后開始 A/D 轉(zhuǎn)換。 ADC0809 結(jié)構(gòu) ADC0809（簡稱 0809） 是 8 路 8 位逐次逼近式 AD 轉(zhuǎn)換器，適用于精度要求不高（分辨率 1／ 256）的多路 AD 轉(zhuǎn)換，具有三態(tài)數(shù)據(jù)總線，可以直接和 MCU 接口。 可編程串行通道 壽命： 1000 寫 /擦循環(huán) 當(dāng)電壓升高超過 10%時，由于磁通密度增加，鐵耗增加，又由于定子電流增加，銅耗也增加，故定子繞組溫度將超過允許值。 對轉(zhuǎn)速的影 響 電 壓減低，轉(zhuǎn)速也減低，因為電壓減低使電磁力矩減小。 論述了如何利用 A/D 轉(zhuǎn)換器將模擬信號轉(zhuǎn)換為數(shù)字信號，再 將信號送至單片機(jī) 與設(shè)定 電壓 對比確定 ， 利用七段數(shù)碼管顯 示出來。 對發(fā)熱的影響 在電壓變化范圍不大的情況下，由于電壓減低，定子電流升高；電壓升高，定子電流減低。 在本設(shè)計中，通過改變輸入的阻值，與設(shè)定的值進(jìn)行比較，而后通過 A/D 轉(zhuǎn)換器將之轉(zhuǎn)變?yōu)閿?shù)值信號輸出。 三級程序存儲器鎖定 （ 1） 主電源引腳 VCC （ 2） 外接晶振引腳 XTAL1 和 XTAL2 （ 3）復(fù)位引腳 RST，輸入高電平是 AT89C51 復(fù)位 （ 4） 輸入 /輸出引腳 P0、 P P P3（共 32 根） （ 5）程序存儲器選擇信號引腳 EA （ 6）外部程序存儲器讀選通信號引腳 PSEN （ 7）外部存儲器低 8 位地址鎖存信號引腳 ALE 單片機(jī)課程設(shè)計說明書
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