【正文】 ades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the boundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline in trading volume and sa le rate showed a downturn this year. In the ―Grand View: Chinese Painting Highlight‖ session at China Guardian 2020 spring auctions, Pan Tianshou’s representative work Eagle, Rock and Flora hit a record auction price of 279 million yuan, while Li Keran’s masterwork Jinggang Mountain fetched million yuan, an unexpected high in recent years. However, the trading volume fells to billion yuan from billion yuan in the same period the year before. The Huangchen 2020 Spring Auctions, which recorded million yuan in total sales, experienced the same. The s ection number went down to 5 from 12 pared to last year. According to expert Shao Jianwu, the art market did not attract much excitement this year due to the booming stock market and the persistent problems of fery and fake deals. The two pieces of Chinese painting notched up high price this spring due to their own value not due to a revival in the market. The successful transaction of two works with a hammer price of more than 100 million yuan once again confirms that valuable and rare works of high quality always earn the longlasting high price. Chinese painting and calligraphy is still the pillar of the market. However, the overall sales rate has dropped slightly, which reflects the demand for the ordinary auction goods has weakened,‖ said the president of China Guardian’s Hu Yanyan. Besides, the entry of new buyers also makes certain changes to the direction of purchasing. In a word, the overall market trend is very unpredictable. Although China Guardian 2020 Spring Auctions has achieved remarkable results, it does not mean that the market has walked out of the predicament. We still have to wait for the big economic boom to invigorate the art market.‖ Even so, the hot pursuit of some special items appeared this spring. A special session of China Guardian Spring Auctions titled ―Fine Gilt—Bronze Buddhist Images‖ achieved a great deal with total sales volume of million yuan and 92 percent sale rate. The 5th Shamar Rinpoche Statue from 1617th century of Tibet was sold for million yuan. The Beijing Chengxuan Auctions featured almost 2,800 items of coins and stamps in three sessions with good sale rate. The Huachen Auctions also set a special session of photographs under the condition of largescale decline of auction sessions. There was a palpable dull thud of disappointment that acpanied the return of the imperial entourage of Zhen Huan to her homeland. It followed a couple years of hushed excitement as Chinese fans were fed tidbits about their proud concubine who was supposed to conquer the high ground of the North American market. Zhen Huan is, of course, the title character of The Legend of Zhen Huan, a 2020 television series that swept China off its feet and later took other Asian countries by storm. Two years ago, it was reported that HBO, a premium cable service headquartered in the United States, was going to air it in North America after some modification. Now, a condensed version that provides English subtitles but no dubbing has finally been made available on Netflix for online streaming. This version, highly anticipated as a milestone in China39。s performers of the troupe still tour the region39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。 基于 51 單片機(jī)的自動灌裝控制系統(tǒng)設(shè)計(jì) 28 參考文獻(xiàn) [1] 錢學(xué)森 , 宋健 . 工程控制論 [M]. 北京 : 科學(xué)出版 , 2020: 5257. [2] 陳衛(wèi) . 自動化生產(chǎn)中的飲料灌裝技術(shù) [J]. 機(jī)械工程 , 2020, (8): 5357. [3] 張毅剛 , 彭喜元 , 彭宇 . 單片機(jī)原理與 應(yīng)用（第二版） [M]. 北京 : 高等教育出版社 , 2020: 202204. [4] 孫 存剛 . AT89S52芯片介紹與應(yīng)用 [J]. 電子開 發(fā) , 2020, (05): 2123. [5] 吳建平 . 傳感器原理及應(yīng)用 [M]. 北京 : 機(jī)械工業(yè)出版社 , 2020: 6678. [6] 王慶有 . 光電傳感器應(yīng)用技術(shù) [M]. 北京 : 機(jī)械工業(yè)出版社 , 2020: 7584. [7] 齊衛(wèi)紅 . 過程控制系統(tǒng)（第 2版） [M]. 北京 : 電子工業(yè)出版社 , 2020: 98107. [8] 湯天浩 . 電機(jī)與拖動 基礎(chǔ) [M]. 北京 : 機(jī)械工業(yè)出版社 , 2020: 3557. [9] 唐介 . 電機(jī)與拖動 [M]. 北京 :高等教育出版社 , 2020: 132146. [10] 曾榮 , 江征風(fēng) , 李玉琳 , 杜會敏 . 一種藥液灌裝機(jī)進(jìn)瓶機(jī)構(gòu)控制系統(tǒng)的研究與設(shè)計(jì) [J]. 化工自動化及儀表 , 2020, (6): 9092. [11] 孫旭 , 凌士杰 . 一種液體灌裝機(jī)控制部分的設(shè)計(jì) [J]. 自控 在本設(shè)計(jì)中，我通過查閱網(wǎng)絡(luò)與 圖書館搜集到的資料，以及指導(dǎo)老師的指導(dǎo)與建議，在確定課題和研究方向上，通過對單片機(jī)的工作原理及自動灌裝控制理論的理解和研究，設(shè)計(jì)出了這一套自動灌裝控制系統(tǒng)的硬件結(jié)構(gòu)和軟件結(jié)構(gòu)，基本上完成了任務(wù)書的要求，通過調(diào)試，此進(jìn)瓶控制方法能夠達(dá)到這個灌裝系統(tǒng)的灌裝要求，各個部分從進(jìn)瓶、灌裝到出瓶之間的協(xié)調(diào)能力能夠穩(wěn)定地運(yùn)行。 211 oddo a LLa ???? 式 5 （ 6）計(jì)算 V帶的根數(shù) z[12] 由《機(jī)械設(shè)計(jì)（第七版）》 V帶根數(shù)由 z=Pcɑ/(P0+P1)KɑKL計(jì)算得出。由《機(jī)械設(shè)計(jì)（第七版）》表（ 82）選帶的基準(zhǔn)長度 Ld=800mm。 按是 i=n1/n2，從動輪基準(zhǔn)直徑 dd2， dd2=idd1=263=126mm 根據(jù)表 87，取 dd2=132mm。 基于 51 單片機(jī)的自動灌裝控制系統(tǒng)設(shè)計(jì) 25 圖 53 模擬調(diào)試系統(tǒng) 系統(tǒng)安裝帶傳動的設(shè)計(jì)說明 按照下面的計(jì)算可以確定帶傳動的各個參數(shù)要求： 取帶輪的傳動比 i=2，小帶輪轉(zhuǎn)速 n1=1400r/min，電動機(jī)的額定功率 P=，一天運(yùn)轉(zhuǎn)時間大于 12小時。焊接時如有跳線應(yīng)先焊接跳線，再安裝機(jī)械元器件，如電阻、中心芯片插座等。 } } } 此程序的功能用來實(shí)現(xiàn)自動灌裝的功能，在這之后還有其他子程序，同