freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)-液壓動(dòng)力滑臺(tái)的plc控制系統(tǒng)設(shè)計(jì)(編輯修改稿)

2025-02-13 01:36 本頁(yè)面
 

【文章內(nèi)容簡(jiǎn)介】 ,通用性和靈活性較差。 采用PLC 對(duì)原有的繼電器 — 接觸器控制系統(tǒng)改造后,使得控制系統(tǒng)簡(jiǎn)單化,故障率大大降低,提高了系統(tǒng)的穩(wěn)定性和可靠性,此控制系統(tǒng)具有良好的柔性,系統(tǒng)維護(hù)和升級(jí)也變得容易。其靈活方便的優(yōu)點(diǎn)顯得更加突出,投資少,經(jīng)濟(jì)效益高。 洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)論文 17 謝 辭 此次控制設(shè)計(jì)是在杜志強(qiáng)副教授的悉心指導(dǎo)下完成的,我在論文設(shè)計(jì)過(guò)程中遇到了一些問題,是導(dǎo)師為我的論文提出了指導(dǎo)性的意見,為我的論文的撰寫扶正了方向,在導(dǎo)師的指導(dǎo)下我少走了許多的彎路,使我能夠順利的完成了論文設(shè)計(jì)。 在此,特向我尊敬 的導(dǎo)師杜志強(qiáng)副教授致以最 衷心的 感謝! 經(jīng)過(guò)這次設(shè)計(jì),我一方面看到了自己的不足,認(rèn)識(shí)到自己所掌握的知識(shí)還很有限;另一方面,我也明白了學(xué)習(xí)知識(shí)與 應(yīng)用 知識(shí)的不同。 學(xué)過(guò)的知識(shí)并不代表就會(huì)應(yīng)用,實(shí)踐是檢驗(yàn)一切的關(guān)鍵,只有把學(xué)過(guò)的知識(shí)整理出來(lái),應(yīng)用到實(shí)際當(dāng)中 。 學(xué)習(xí)的關(guān)鍵在于學(xué)以致用,學(xué)以致用才是最終目的。這次設(shè)計(jì)讓我找到了收獲的快樂 , 在此也向設(shè)計(jì)過(guò)程中給予我?guī)椭椭笇?dǎo)的各位老師和同學(xué)們表示由衷的謝意! 再次由衷的感謝給予我?guī)椭椭笇?dǎo)的杜志強(qiáng)副教授! 洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)論文 18 參考文獻(xiàn) [1] 李青虹 . 組合機(jī)床動(dòng)力滑臺(tái)的 PLC 控制 [J]. 三 明 高等??茖W(xué)校學(xué)報(bào) ,2022,21(4):38~41 [2] 魏建忠 , 游龍翔 . PLC 在液壓動(dòng)力滑臺(tái)控制系統(tǒng)的應(yīng)用 [J]. 廈門大學(xué)學(xué)報(bào) , 2022,(9):63~64 [3] 鄭勝利 , 梁煒 . PC 在 YT4543 型液壓動(dòng)力滑臺(tái)上的應(yīng)用 [J]. 平原大學(xué)學(xué)報(bào) , 2022,20(2): 67~68 [4] 武濤 , 張永博 . YT4543 型組合機(jī)床動(dòng)力滑臺(tái)液壓系統(tǒng)的 PLC 改造 [J]. 保定學(xué)院學(xué)報(bào) , 2022,21(2): 47~49 [5] 張利平 . 現(xiàn)代液壓技術(shù)應(yīng)用 220 例第二版 [M]. 北京 : 化學(xué)工業(yè)出版社 , 2022 [6] 馬憲 亭 . 液壓與氣壓傳動(dòng)技術(shù) [M]. 北京 : 化學(xué)工業(yè)出版社 , 2022 [7] 李鄂民 . 實(shí)用液壓技術(shù)一本通 [M]. 北京 : 化學(xué)工業(yè) 出版社, 2022 [8] 許焰 . 基于 PLC 的液壓動(dòng)力滑臺(tái)控制系統(tǒng)改造 [J]. 液壓與氣壓 ,2022,(12):66~67 [9] 郭艷萍 . 電氣控制與 PLC 技術(shù) [M]. 北京 : 北京師范大學(xué)出版社 ,2022 [10] 范次猛 .可編程控制器原理與應(yīng)用 [M]. 北京 : 北京理工大學(xué)出版社 ,1998 [11] 郝麗娜 , 鞏亞東 , 李虎 . 機(jī)械裝備電氣控制技術(shù) [M]. 北京 : 科學(xué)出版社 ,2022 [12] 熊軼娜 , 吳躍明 . 用 PLC 改進(jìn)液 壓動(dòng)力滑臺(tái)控制系統(tǒng) [J]. 長(zhǎng)沙航空職業(yè)技術(shù)學(xué)院 , 2022,(50:77~78 [13] 侯利民 , 王巍 . PLC 在液壓傳動(dòng)控制系統(tǒng)的應(yīng)用 [J]. 遼寧工程技術(shù)大學(xué)學(xué)報(bào) , 2022,22(6):812~814 [14] 陳淑梅 . Hydraulic and Pneumatic Transmission( EnglishChinese Bilingual)液壓與氣壓傳動(dòng)(英漢雙語(yǔ)) [M]. 北京 : 機(jī)械工業(yè) 出版社 , 2022 [15] 楊芝橋 . 開關(guān)閥式液壓傳動(dòng)滑臺(tái)的 PLC 數(shù)字控制系統(tǒng)的研究 [碩士學(xué)位論文 ], 廣西大學(xué) , 2022 [16] 馬鵬飛 . 全液 壓推土機(jī)液壓行駛驅(qū)動(dòng)系統(tǒng)動(dòng)力學(xué)研究 [博士學(xué)位論文 ], 長(zhǎng)安大學(xué) , 2022 洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)論文 19 外文資料翻譯 Hydraulic and pneumatic transmission Characteristics of hydraulic and pneumatic power A hydraulic drive with the following advantages 1. In the same volume, the hydraulic unit higher than the power generated electrical installations. Under the same power, the hydraulic device small size, light weight, power density, pact structure. Hydraulic motor the same size and weight of only about 12% motor power. 2. Hydraulic equipment work stable. As the light weight, inertia, fast response, easy to implement quick start of hydraulic equipment, braking and frequent mutation. 3. hydraulic device can be realized in a wide range of variable speed (variable speed range up to 2022), it can be carried out during operation speed. 4. hydraulic drive is easy to automate, its fluid pressure, flow, or flow direction is easy to adjust or control. When the hydraulic control and electric control, electronic control, or used in conjunction with pneumatic control, the entire drive unit to achieve a plex sequence of actions can be easily remote controlled. 5. hydraulic overload protection device is easy to implement, it is electrical and mechanical gear transmission can not be done. 6. hydraulic ponents has been realized as standardization, serialization and the universal, hydraulic system design, manufacture and use of a convenient location. 7. to achieve linear motion using hydraulic transmission than a simple mechanical drive. hydraulic defects 1. As the fluid flow resistance losses and leakage is inevitable, so the 洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)論文 20 process of hydraulic work often more energy loss. 2. performance vulnerable to temperature changes, so should not be in the high or low temperature conditions. 3. In order to reduce leakage, hydraulic ponents, high manufacturing precision, and therefore more expensive. 4. hydraulic failure is not easy to find reasons. the advantages of pressure transmission 1. air can be obtained from the atmosphere, while the air can be used directly discharged into the atmosphere to deal with easily, in case of air pipes for leaks, in addition to causing some power losses, will not produce a serious detrimental impact of the work, nor will pollute the environment. 2. air viscosity, pressure loss in the pipeline is small, so easy to focus on the supply of pressed air and longdistance transport. 3. work by pressed air pressure is low (usually ~ ), therefore, the gas ponent of the materials and manufacturing precision requirements are lower. 4. gas system maintenance simple and easy to plug the pipe. 5. safe, and easy to implement overload protection. pressure transmission defects 1. As the air is pressible characteristics, the stationary velocity as hydraulic transmission. 2. low because of work pressures and dimensions should not be too large, and therefore the overall thrust pneumatic actuator generally not significant. 3. lower transmission efficiency. In general, the advantages of hydraulic and pneumatic drive is a major, and their conditions through technical progress and shortings of many years unremitting efforts, has been overe or have been resented improvement. 洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)論文 21 Examples of hydraulic system Hydraulic drive system is based on the operational requirements of mechanical equipment, choose the appropriate hydraulic circuit through the anic bination of the
點(diǎn)擊復(fù)制文檔內(nèi)容
規(guī)章制度相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
備案圖片鄂ICP備17016276號(hào)-1