【文章內(nèi)容簡介】 樣一次機會，能夠獨立地完成 這樣一個設(shè)計 ， 作為檢驗這些年來學習的成果 ,在這個過程當中， 學校 給予我們各種方便，使我們在即將離校的最后一段時間里，能夠更多學習一些實踐應(yīng)用知識，增強了我們實踐操作和動手應(yīng)用能力，提高了獨立思考的能力。再一次對我的母校表示感謝。 感謝在整個畢業(yè)設(shè)計期間和我密切合作的同學，和曾經(jīng)在各個方面給予過我?guī)椭幕锇閭?，正是因為有了你們的幫助，才讓我不僅學到了本次課題所涉及的新知識，更讓我感覺到了知識以外的東西，那就是團結(jié)的力量。 黑龍江農(nóng)業(yè)經(jīng)濟職業(yè)學院機電工程系畢業(yè)論文 13 附 錄 include include define uchar unsigned char define uint unsigned int 1．尋光信號判斷程序： uchar guang_scan() { PORTC=i。 switch(i) { case 0xFE: guang=0x0。 case 0xFD: guang =0x1。 case 0xFB: guang =0x2。 case 0XF7: guang =0x3。 case 0xDF: guang =0x4。 case 0xBF: guang =0x5。 case 0x7F: guang =0x6。 else guang =0x7。 return guang。 } } 2．內(nèi)置 PWM 控制舵機程序： void port_init(void) // I/O 口定義函數(shù) { PORTA = 0x00。 DDRA = 0x00。 PORTB = BIT(PB3)。 DDRB = BIT(PB3)。 PORTC = 0x00。 //m103 output only DDRC = 0x00。 PORTD = 0x00。 DDRD = 0x00。 } void timer0_init(void) // 定時器初始化函數(shù) { TCCR0 = 0x00。 //stop 黑龍江農(nóng)業(yè)經(jīng)濟職業(yè)學院機電工程系畢業(yè)論文 14 TCNT0 = 0x01。 //set count OCR0? = 0xFF。 //set pare TCCR0 = 0x62。 //start timer 。 相位修正 , 8分頻 } void devices_init (void) // 舵機控制初始化程序 { CLI()。 //disable all interrupts? port_init()。 timer0_init()。 MCUCR = 0x00。 GICR = 0x00。 TIMSK = 0x00。 //timer interrupt sources? SEI()。 //reenable interrupts? } void delay_short(uint t) // 短延時 { uint i。 for (i=0。it。i++)。 } void PWM(void) // PWM 波控制程序 { uchar guang, OCR0_V。 init_devices()。 OCR0_V = 0xff。 while(1) { switch(guang) { case 0x0: { OCR0_V =90。 OCR0 = OCR0_V。 }。 case 0x1: { OCR0_V = 60。 OCR0 = OCR0_V。 }。 case 0x2: { OCR0_V =30。 OCR0 = OCR0_V。 }。 case 0x3: 黑龍江農(nóng)業(yè)經(jīng)濟職業(yè)學院機電工程系畢業(yè)論文 15 { OCR0_V =0。 OCR0 = OCR0_V。 }。 case 0x4: { OCR0_V =30。 OCR0 = OCR0_V。 }。 case 0x5: { OCR0_V =60。 OCR0 = OCR0_V。 }。 case 0x6: { OCR0_V =90。 OCR0 = OCR0_V。 }。 } } 黑龍江農(nóng)業(yè)經(jīng)濟職業(yè)學院機電工程系畢業(yè)論文 16 您好，為你提供優(yōu)秀的畢業(yè)論文參考資料，請您刪除以下內(nèi)容， O(∩ _∩ )O 謝謝！??！ A large group of tea merchants on camels and horses from Northwest China39。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。s Zhangye city during their journey to Kazakhstan, May 5, 2021. The caravan, consisting of more than 100 camels, three horsedrawn carriages and four support vehicles, started the trip from Jingyang county in Shaanxi on Sept 19, 2021. It will pass through Gansu province and Xinjiang Uygur autonomous region, and finally arrive in Almaty, formerly known as AlmaAta, the largest city in Kazakhstan, and Dungan in Zhambyl province. The trip will cover about 15,000 kilometers and take the caravan more than one year to plete. The caravan is expected to return to Jingyang in March 2021. Then they will e back, carrying specialty products from Kazakhstan A small art troupe founded six decades ago has grown into a household name in the Inner Mongolia autonomous region. In the 1950s, Ulan Muqir Art Troupe was created by nine young musicians, who toured remote villages on horses and performed traditional Mongolian music and dances for nomadic families. The 54yearold was born in Tongliao, in eastern Inner Mongolia and joined the troupe in says there are 74 branch troupes across Inner Mongolia and actors give around 100 shows every year to local nomadic people. I can still recall the days when I toured with the troupe in the early 39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。t help but sing the folk songs, Nasun says. The vastness of Inner Mongolia and the lack of entertainment options for people living there, made their lives lonely. The nomadic people were very excited about our visits, Nasun recalls. We didn39。t have a formal stage. The audience just sat on the grass. Usually, the performances became a big party with local people joining in. For him, the rewarding part about touring isn39。t just about sharing art with nomadic families but also about gaining inspiration for the music and dance. Ulan Muqir literally translates as red burgeon, and today39。s performers of the troupe still tour the region39。s villages and entertain nomadic families, but their fame has spread around the world. On May 16 and 17, nearly 100 singers and dancers from the troupe performed at Beijing39。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。s president, who is also a renowned tenor, tells China Daily. During a tour in 1985, he went to a village and met an elderly local man, wh