本文選題：滾切剪 + 電液伺服��； 參考：《太原科技大學(xué)》2014年碩士論文

【摘要】：目前，在中厚板生產(chǎn)線上，由原料庫、加熱爐、軋機(jī)、矯直機(jī)、冷床、切邊剪、定尺剪和垛臺等核心主體設(shè)備組成了中厚板生產(chǎn)流程。山西省冶金設(shè)備設(shè)計理論與技術(shù)重點實驗室---省部共建國家重點實驗室培育基地，多年來在軋機(jī)、矯直機(jī)和滾切剪等冶金重型機(jī)械領(lǐng)域進(jìn)行了大量的理論和工程實踐化研究工作，設(shè)計完成了具有自主知識產(chǎn)權(quán)和專利的全液壓滾切剪，其在中厚板的塌角和刀瘤的消除上起到關(guān)鍵的作用，保證了切口的平整度。以全液壓滾切剪為研究對象，采用液壓伺服實現(xiàn)設(shè)備的兩個液壓伺服缸的相對位置和速度控制，保證全液壓滾切剪的上剪刃在時間和空間上完成近似純滾動剪切動作。 面向全液壓滾切剪的兩路電液伺服系統(tǒng)，提出了基于系統(tǒng)耦合誤差補(bǔ)償原理的控制策略。在重點分析兩路電液伺服系統(tǒng)在不同工況下運行時，因為不同的板厚相應(yīng)有不同的剪切力，嚴(yán)重影響了全液壓滾切剪的上剪刃的近似純滾切運動，選擇交叉耦合控制理論實現(xiàn)兩路電液伺服位移系統(tǒng)的協(xié)同運動控制，，使得上剪刃完成工藝要求動作。首先，在不改變原有單回路的基礎(chǔ)上，根據(jù)交叉耦合控制原理設(shè)計了耦合誤差補(bǔ)償控制環(huán)節(jié)。其次，給出了系統(tǒng)耦合誤差的計算模型，并在設(shè)計耦合誤差控制器的基礎(chǔ)上，達(dá)到兩路之間的系統(tǒng)耦合誤差動態(tài)分配，實現(xiàn)系統(tǒng)協(xié)同運動控制。最后，完成了滾切剪電液伺服系統(tǒng)的仿真和現(xiàn)場實驗，實驗部分是在原有的設(shè)備的Simatic PLC控制系統(tǒng)的基礎(chǔ)上增加耦合誤差補(bǔ)償模塊，結(jié)果表明該方案保證了上剪刃的近似滾切運動。 液壓滾切剪為研究對象，以工程項目為背景，在電氣控制系統(tǒng)中運用基于模糊PID的交叉耦合控制理論，設(shè)計的兩路電液伺服協(xié)同控制方案，在工業(yè)項目中實際應(yīng)用效果良好，對多路電液伺服系統(tǒng)的研究有借鑒意義。
[Abstract]:At present, the production process of medium and thick plate is composed of raw material storehouse, reheating furnace, rolling mill, straightening machine, cold bed, edge cutting shear, ruler shear and stacking table and so on. Shanxi Provincial key Laboratory of Metallurgical equipment Design Theory and Technology-State key Laboratory training Base has been established by the Ministry of Shanxi Province for many years in the rolling mill, In the field of heavy metallurgical machinery, such as straightener and rolling shear, a great deal of theoretical and engineering research work has been carried out, and the full hydraulic rolling shear with independent intellectual property rights and patent has been designed and completed. It plays a key role in the sloughing angle of the plate and the elimination of the knife nodule and ensures the planeness of the incision. The relative position and speed of two hydraulic servo cylinders of the equipment are controlled by hydraulic servo to ensure that the upper cutting edge of the full hydraulic rolling shear can complete the approximately pure rolling shear action in time and space with the full hydraulic rolling shear as the object of study and the hydraulic servo system is used to control the relative position and speed of the two hydraulic servo cylinders. A control strategy based on the principle of system coupling error compensation is proposed for a two-channel electro-hydraulic servo system for full hydraulic rolling shear. When the two-channel electro-hydraulic servo system is running under different working conditions, because the different plate thickness has different shear force, it seriously affects the approximate pure rolling movement of the upper cutting edge of the full hydraulic rolling shear. The cross coupling control theory is chosen to realize the cooperative motion control of two electro-hydraulic servo displacement systems, which makes the upper shear edge complete the process requirements. Firstly, on the basis of not changing the original single loop, the coupling error compensation control link is designed according to the principle of cross coupling control. Secondly, the calculation model of system coupling error is given. Based on the design of coupling error controller, the dynamic distribution of system coupling error between two paths is achieved, and the cooperative motion control of the system is realized. Finally, the simulation and field experiment of the rolling shear electro-hydraulic servo system are completed. The experimental part is to add the coupling error compensation module to the Simatic PLC control system of the original equipment. The results show that the scheme ensures the approximate rolling motion of the upper cutting edge. The hydraulic rolling shear is used as the research object, taking the engineering project as the background, the cross-coupling control theory based on fuzzy PID is applied in the electric control system, and the design of the two-channel electro-hydraulic servo cooperative control scheme is designed. The practical application effect in the industrial project is good. It can be used for reference in the study of multi-channel electro-hydraulic servo system.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TG333.21;TP273

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