發(fā)布時間：2018-06-26 02:07

  本文選題：主傳動系統(tǒng) + 非線性��； 參考：《華北理工大學(xué)》2017年碩士論文

【摘要】：在鋼鐵工業(yè)生產(chǎn)中,隨著軋制速度的進一步提升,板帶軋機主傳動系統(tǒng)的扭轉(zhuǎn)振動現(xiàn)象越來越突出。軋機發(fā)生扭振時會影響到扎件的質(zhì)量和產(chǎn)量,振蕩激烈時甚至?xí)䦟堉圃O(shè)備造成不可逆損害。因此控制板帶軋機主傳動系統(tǒng)的扭轉(zhuǎn)振動現(xiàn)象對于當(dāng)今鋼鐵行業(yè)具有重要的意義。針對軋機主傳動系統(tǒng)存在不可忽略非線性因素的問題,考慮非線性阻尼和非線性剛度等因素,建立并完善了以電機轉(zhuǎn)速,負載轉(zhuǎn)速和接軸扭矩為狀態(tài)變量的二質(zhì)量系統(tǒng)模型。通過與傳統(tǒng)線性自抗擾控制系統(tǒng)進行對比,證明了自抗擾控制方法對于非線性系統(tǒng)的可行性和有效性,并可將轉(zhuǎn)速降控制在0.77%以內(nèi),為解決軋機主傳動非線性扭振問題提供了有效方法。同樣在傳統(tǒng)線性模型的基礎(chǔ)上,考慮間隙和非線性剛度等因素,建立了板帶軋機主傳動二質(zhì)量系統(tǒng)模型。設(shè)計了基于擴張狀態(tài)觀測器的軋機主傳動Terminal滑�？刂葡到y(tǒng)。通過與軋機主傳動線性自抗擾控制系統(tǒng)進行對比,證明了基于擴張狀態(tài)觀測器的Terminal滑�？刂频目尚行院陀行�,為解決軋機主傳動非線性扭振問題提供了新思路。搭建了機電耦合模擬平臺,驗證了扭振的存在。將PC作為控制終端。完成了數(shù)據(jù)量的采集,繪制圖像進行實時監(jiān)控顯示,并對圖像結(jié)果進行了分析。最后運用PID算法實現(xiàn)了定速調(diào)節(jié)功能。圖像表明,扭振發(fā)生時存在轉(zhuǎn)速差;過渡過程會影響響應(yīng)時間,進而影響系統(tǒng)的穩(wěn)定性;載荷突變會引起電機的轉(zhuǎn)速降。
[Abstract]:In the steel industry, with the further improvement of the rolling speed, the torsional vibration of the main drive system of the strip mill is becoming more and more prominent. The torsional vibration of the rolling mill will affect the quality and the output of the ligation. The irreversible damage to the rolling equipment will even be caused when the oscillation is fierce. The torsional vibration of the main drive system of the strip mill is controlled by this control plate The phenomenon is of great significance for the iron and steel industry. In view of the problem that the main drive system of rolling mill can not be ignored, the two mass system model, which takes the speed of the motor, the speed of the load and the torque of the shaft as the state variable, is established and perfected by considering the nonlinear damping and the nonlinear stiffness. The interference control system is compared, which proves the feasibility and effectiveness of the self disturbance rejection control method for nonlinear systems, and can control the speed drop within 0.77%. It provides an effective method to solve the nonlinear torsional vibration problem of the main drive of rolling mill. The main drive two quality system model of the strip mill is designed. A sliding mode control system of the main drive Terminal based on the extended state observer is designed. By comparing with the linear auto disturbance rejection control system of the main drive of the rolling mill, the feasibility and effectiveness of the Terminal sliding mode control based on the extended state observer are proved, in order to solve the main transmission of rolling mill. The linear torsional vibration problem provides a new idea. The electromechanical coupling simulation platform is set up to verify the existence of the torsional vibration. PC is used as the control terminal. The data is collected, the image is displayed in real-time monitoring and display, and the image results are analyzed. Finally, the speed regulation function is realized with the PID algorithm. The image shows that the torsional vibration occurs when the torsional vibration occurs. When the speed is poor, the transient process will affect the response time, and then affect the stability of the system. Sudden changes in load will cause the motor speed drop.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG333;TP273

【參考文獻】

相關(guān)期刊論文 前10條

1 王航;趙斌;;磁懸浮飛輪的終端滑�？刂芠J];機電工程技術(shù);2016年07期

2 時培明;夏克偉;劉彬;侯東曉;;多自由度軋機傳動系統(tǒng)非線性非主共振扭振特性[J];振動與沖擊;2015年12期

3 吳炳勝;張帥;;冷連軋機主傳動系統(tǒng)的扭轉(zhuǎn)振動分析[J];鍛壓技術(shù);2015年05期

4 沈大良;劉斌;王英睿;;軋機傳動系統(tǒng)扭振研究[J];軋鋼;2014年06期

5 鄭紅梅;彭迪;;軋機主傳動系統(tǒng)強非線性扭振研究[J];機械設(shè)計與制造;2014年07期

6 崔桂梅;趙繼威;;基于矢量控制和干擾前饋補償?shù)耐诫姍C扭振控制[J];控制工程;2014年03期

7 陶洪峰;張華;霰學(xué)會;沈璐毅;;自抗擾控制器在聚丙烯反應(yīng)釜中的應(yīng)用[J];控制工程;2013年06期

8 高崇一;杜國君;張忠健;;考慮多間隙影響的軋機主傳動系統(tǒng)扭振分析[J];機械工程學(xué)報;2014年03期

9 魏偉;滕英妍;左敏;劉載文;;自抗擾控制在HR神經(jīng)元同步中的應(yīng)用研究[J];控制工程;2013年03期

10 時培明;夏克偉;劉彬;蔣金水;;含間隙多自由度軋機傳動系統(tǒng)非線性扭振動力特性[J];機械工程學(xué)報;2012年17期

相關(guān)碩士學(xué)位論文 前2條

1 徐運華;軋機主傳動系統(tǒng)的扭轉(zhuǎn)振動分岔控制研究[D];哈爾濱工業(yè)大學(xué);2014年

2 黃石;天鐵軋機軸系扭振特性及抑制方法的研究[D];重慶大學(xué);2008年

，

本文編號：2068579