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基于at89s51單片機(jī)核心的溫度控制系統(tǒng)的設(shè)計(jì)doc-在線瀏覽

2024-08-28 00:58本頁(yè)面
  

【正文】 把他的全部均衡論體系,以代數(shù)聯(lián)立方程式的形式建立了一個(gè)一般均衡數(shù)學(xué)模型。 p class=39。/p br /br /字 /pP/Pp內(nèi)容簡(jiǎn)介/pp本設(shè)計(jì)的建筑場(chǎng)地位于湖北省武漢市某家屬區(qū),東西長(zhǎng)45m,南北長(zhǎng)14m,總占地面積672m2,其中底層為結(jié)構(gòu),為底層商鋪使用。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。Ajj54839。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。Ajj54839。家用電器大到冰箱、彩電小到電飯煲、電水壺都已經(jīng)很普及了。提高拉生活水平,人們便會(huì)更加注重安全,所以對(duì)家用電器的安全會(huì)更加注重。對(duì)其壺體與壺座的耐久實(shí)驗(yàn)進(jìn)行了設(shè)計(jì)。ldquo。rdquo。br /機(jī)械結(jié)構(gòu)部分的設(shè)計(jì)主要包括對(duì)壺體夾持部分,使壺體模仿日常使用時(shí)上下移動(dòng)部分和壺底的固定部分。設(shè)計(jì)中壺體的夾持部分應(yīng)該提供一個(gè)相應(yīng)大小的力,即能夾持壺體,帶動(dòng)它一起動(dòng)作,又不能對(duì)壺體表面進(jìn)行破壞。其次,模仿水壺日常使用時(shí)的上下移動(dòng),假使水壺夾緊后從原位向上提升180mm后開始下降2/3的距離然后放開水壺,讓其自由下落與壺底接觸。讓壺體夾緊部分再回到原位后就可以進(jìn)行下一次的動(dòng)作。壺底一般為圓盤狀,所以我著機(jī)了Y型夾緊方式,在機(jī)器底部設(shè)置了三個(gè)夾緊用的壓板來(lái)固定壺底。Ekn43739。夾緊壺體部分通過(guò)通過(guò)兩個(gè)電磁閥控制(夾緊電磁閥YV1和松開電磁閥YV2),夾緊壺體上升和下降動(dòng)作由電動(dòng)機(jī)正反轉(zhuǎn)控制。則需要加時(shí)間繼電器,通過(guò)時(shí)間繼電器延時(shí)閉合和延時(shí)斷開開控制每一循環(huán)周期所用的時(shí)間;加數(shù)字顯示器來(lái)記數(shù)并顯示循環(huán)次數(shù)。步進(jìn)指令又稱STL指令,在PLC中還有一條使ST L指令復(fù)位的RET指令,利用這兩條指令就可以方便的達(dá)到對(duì)順序工作的系統(tǒng)控制的功能。br /br /氣壓傳動(dòng)部分的設(shè)計(jì),在本設(shè)計(jì)中主要是用于對(duì)壺體的夾緊部分。在這個(gè)氣動(dòng)系統(tǒng)中氣源裝置選用了常見(jiàn)的氣源三連件398,213,在線路中加上帶壓力表的調(diào)壓閥來(lái)調(diào)節(jié)氣缸輸出壓力的大小。同時(shí),在本設(shè)計(jì)中夾緊壺體后的上下移動(dòng)也可以由氣壓傳動(dòng)來(lái)實(shí)現(xiàn)該動(dòng)作。 span class=39。/span br /br /這次設(shè)計(jì)是機(jī)電一體化中典型的amp??删幊绦蚩刂破鱌LC+氣動(dòng)元件amp。組成的控制系統(tǒng),再加上簡(jiǎn)單的機(jī)械類設(shè)計(jì)。每分鐘動(dòng)作10次,動(dòng)作周期:夾緊amp。amp。上升amp。amp。下降2/3amp。amp。松開amp。amp。下降。用PLC來(lái)控制各個(gè)動(dòng)作的先后順序和單周期動(dòng)作與自動(dòng)循環(huán)的轉(zhuǎn)換和執(zhí)行。設(shè)計(jì)氣缸的內(nèi)徑和外徑的大小、設(shè)計(jì)了氣缸進(jìn)氣和排氣口的直徑大小。 span class=39。/span /pP/Pp摘amp。 要br /在全球能源緊張、注重環(huán)境保護(hù)的今天,提高能源利用效率和發(fā)展可再生能源已成為無(wú)可爭(zhēng)議的可持續(xù)發(fā)展能源的兩個(gè)重要方面。隨著風(fēng)能的開發(fā)和利用技術(shù)的發(fā)展,風(fēng)力發(fā)電技術(shù)取得了顯著的進(jìn)步,并逐漸成為能源技術(shù)中的一個(gè)分支。增速箱是保證風(fēng)力發(fā)電機(jī)具有先進(jìn)性、高可靠性、易維護(hù)性及經(jīng)濟(jì)性的重要部件。而行星齒輪傳動(dòng)是目前所有傳動(dòng)方案中最能實(shí)現(xiàn)這些要求的傳動(dòng)技術(shù)。常見(jiàn)的有兩級(jí)2KH (NGW)型行星傳動(dòng)加一級(jí)定軸傳動(dòng)組合,一級(jí)2KH (NGW)型行星傳動(dòng)加兩級(jí)定軸傳動(dòng)組合,一級(jí)雙聯(lián)(NW)型行星傳動(dòng)加一級(jí)定軸傳動(dòng)組合。分析其傳動(dòng)方案包括結(jié)構(gòu)形式、進(jìn)行傳動(dòng)比的優(yōu)化分配以及關(guān)鍵零部件的詳細(xì)設(shè)計(jì),并應(yīng)用AutoCAD軟件繪制傳動(dòng)升速箱的裝配圖,寫出升速箱的設(shè)計(jì)說(shuō)明書。Byk76139。nbsp。nbsp。s leaf blade is only about twenty rpm,but the electric generator needs thousands of rounds per it needs a speedincrease gearbox. The speedincrease gearbox is the important part of the wind power generation ,which makes the wind power generation advanced, high reliability,easy maintainability and economy. Accordingly,it demands that the speedincrease gearbox can implementation high gear ratio, light weight, small size and high reliability. At present the planetary gear transmission is the best the planetary gear transmission is usually adopted at the speedincrease gearbox of wind power generator. The representative transmission schemes are two 2KH (NGW type)planetary gear transmission bining with a fixed axis gear transmission,a 2KH (NGW type )planetary gear transmission bining with two fixed axis gear transmission and a duplex planetary gear(NW type)transmission bining with a fixed axis gear transmission. This article adopts the duplex planetary gear transmission bining with a fixed axis gear transmission. Both the radial and the axial sizes of it are small. This article researches the speedincrease gearbox of wind power generator. In this article, we analyze the transmission scheme including structural style , optimize the transmission ratio and design the key parts in detail. The assembly diagram of the speedincrease gearbox and the design specifications of the transmission system are provided. p class=39。/p br /br /Key words: wind energy, the speedincrease gearbox of the wind turbine generator, the planetary gear transmission,optimizationbr /br /本文研究的主要內(nèi)容:br /①、根據(jù)兆瓦級(jí)風(fēng)力發(fā)電機(jī)葉片主軸和發(fā)電機(jī)的工作轉(zhuǎn)速及額定功率,設(shè)計(jì)增速傳動(dòng)齒輪箱的總傳動(dòng)比和功率;br /②、根據(jù)風(fēng)力發(fā)電機(jī)增速傳動(dòng)齒輪箱體積小重量輕和便于高空維護(hù)的要求,選擇合理的齒輪傳動(dòng)形式和結(jié)構(gòu),確定傳動(dòng)級(jí)數(shù),進(jìn)行傳動(dòng)比的分配設(shè)計(jì);br /③、根據(jù)兆瓦級(jí)風(fēng)力發(fā)電機(jī)的功率,使用載荷譜和壽命的要求,對(duì)增速傳動(dòng)齒輪箱(含各級(jí)齒輪、軸、軸承等)進(jìn)行強(qiáng)度和壽命設(shè)計(jì);br /④、根據(jù)增速傳動(dòng)齒輪箱零部件等強(qiáng)度等壽命的設(shè)計(jì)原則和增速傳動(dòng)齒輪箱輕量化的要求,在保證強(qiáng)度和壽命的條件下,對(duì)增速傳動(dòng)齒輪箱進(jìn)行傳動(dòng)比優(yōu)化分配和參數(shù)優(yōu)化設(shè)計(jì);br /⑤、畫出增速傳動(dòng)齒輪箱的總裝圖。并且在設(shè)計(jì)中要考慮到傳動(dòng)齒輪箱各個(gè)零部件的等強(qiáng)度等壽命的設(shè)計(jì)原則,在保證強(qiáng)度和壽命的條件下要對(duì)傳動(dòng)齒輪箱進(jìn)行傳動(dòng)比優(yōu)化分配和參數(shù)優(yōu)化設(shè)計(jì)。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。Byk76139。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。Byk76139。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。nbsp。
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