【正文】 s Liaoning province, decades 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 2021 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 2021 Spring Auctions, which recorded million yuan in total sales, experienced the same. The section 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 2021 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 。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 performers of the troupe still tour the region39。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。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。書中給出了大量來源于生產(chǎn)實際的實用電路和 實例。內(nèi)容包括紅外傳感器、 圖像傳感器 、光纖維感器、超導(dǎo)傳感器、微波傳感器、 生物傳感器 、氣體傳感器、濕度傳感器、非晶態(tài)合金傳感器、機器人傳感器、智能傳感器、其他新型（電流、電壓、三維過載、液晶）傳感器等 [11] 周征 .傳感器原理與檢測 技術(shù) . 清華大學(xué)出版社 本書以被測物理量為研究對象，全面地闡述了各種被測物理量的檢測方法、各種傳感器的工作原理和按工程實際選用傳感器的原則。 [9] 機械設(shè)計手冊》編委會 .機械設(shè)計手冊單行本 —— 氣壓傳動與控制 . 機械工業(yè)出版社 全書共分常用資料，機械零部件與傳動設(shè)計（一）、（二），液壓、氣動、液力傳動與控制，機械設(shè)計基礎(chǔ)，現(xiàn)代設(shè)計方法及應(yīng)用等 6 卷 50 篇。 [4] 鐘肇新 ， 彭侃 .可編程控制器原理及應(yīng)用 [M].華南理工出版社 2021 本書詳細(xì)介紹了 PLC的組成結(jié)構(gòu)、工作原理、指令系統(tǒng)、編程方法、網(wǎng)絡(luò)通訊以及PLC在控制系統(tǒng)中的實際應(yīng)用等內(nèi)容 [5] 楊公源 .常用變頻器應(yīng)用實例 . 電子工業(yè)出版社 2021101 本書在介紹變頻器的基本類型和變頻器的運行原理的基礎(chǔ)上，介紹丹佛斯、 西門子 、ABB、松下、富士等公司的變頻器及其 應(yīng)用實例 ，包括變頻器在機床、流量、壓力、液位、溫度 、配比、涂布、卷繞、退繞、同步，以及 復(fù)合材料 制造等方面的應(yīng)用實例。 [2] 鄒金慧等可編程控制器及其系統(tǒng)重慶大學(xué)出版社 本書詳細(xì)介紹了 PLC的組成結(jié)構(gòu)、工作原理、指令系統(tǒng)、編程方法、網(wǎng)絡(luò)通訊以及PLC在控制系統(tǒng)中的實際應(yīng)用等內(nèi)容。畢業(yè)之后，我還需要不斷學(xué)習(xí)總結(jié)，不斷實踐，把這四年所學(xué)到的專業(yè)理論知識很好地運用到工作當(dāng)中，不斷提高自己的學(xué)習(xí)工作能力。四年的大學(xué)生活，我學(xué)到的不僅是專業(yè)上的知識，還有為人處事的道理。經(jīng)過這次設(shè)計，同時我個人的學(xué)習(xí)領(lǐng)悟能力和團隊合作精神也得到一個質(zhì)的提高。 26 致 謝 回顧這次歷時兩個多月的畢業(yè)設(shè)計，感覺收獲頗豐。 在整個畢業(yè)設(shè)計過程中，遇到了大大小小的不少問題，但經(jīng)過大家的合作和向老師請教，都已經(jīng)把問題解決掉了，這樣一方面提高了個人解決問題的能力，積累了不少的經(jīng)驗。整個設(shè)計中，我完成了自動化流水線設(shè)備傳送帶系統(tǒng)的硬件和軟件架構(gòu)，實現(xiàn)了隨物件的行動，傳送帶自動減速，自動化流水線設(shè)備自動抓取移動放置返回的功能 。從開始的資料收集、理論構(gòu)思，到設(shè)計流程 ,完成程序設(shè)計 ,再到最后配置各個硬件部件 ,一路下來，自己對這個設(shè)計思考過很多，提出過很多的觀點和方法，最后也否決了很多。定好自己的工作計劃，一步一個腳印的往下走。前者已經(jīng)很好的完成，而后者也做到了結(jié)構(gòu)簡單、功能實用和操作方便等幾點。即減速機的速度約為 220r/min，即轉(zhuǎn)速 n=220r/min 查自動化流水線設(shè)備冊 得： 選擇材料為 20CrMoTi 抗拉強度δ b=1100 屈服點δ s=850 彎曲疲勞強度極限δ 1=525 扭轉(zhuǎn)疲勞強度極限τ 1=300 查表 得， A=98 Dmin=A（ P/n） 1/3=98() 1/3=38mm 所以取三根軸的直徑分別為 65mm， 40mm， 40mm。 已知運輸帶的速度為 ，即帶輪的速度為 。 齒輪厚度為（ 6~10） m，取 b=30mm。 所以： Z1=15， Z2=60， Z3=20， Z4