本文選題：張力控制 + 厚度控制��； 參考：《華北理工大學(xué)》2017年碩士論文

【摘要】：冷軋板材的厚度偏差和板形精度是冷軋板帶材產(chǎn)品的主要衡量指標(biāo),與此相關(guān)的控制策略一直是軋制過(guò)程自動(dòng)化研究的熱點(diǎn)。以某1700mm酸軋機(jī)組建設(shè)項(xiàng)目為背景,在查閱了國(guó)內(nèi)外大量相關(guān)文獻(xiàn)的基礎(chǔ)上,通過(guò)對(duì)酸軋機(jī)組的主要設(shè)備參數(shù)、生產(chǎn)工藝流程、儀表配置的了解,選擇了Siemens軟件平臺(tái),確定了整個(gè)自動(dòng)控制系統(tǒng)的硬件配置、網(wǎng)絡(luò)組態(tài)并進(jìn)行程序編寫(xiě)。在現(xiàn)場(chǎng)實(shí)踐過(guò)程中,主要研究了酸軋機(jī)組中的主速度控制系統(tǒng),其中主速控制系統(tǒng)包括軋機(jī)區(qū)域的帶鋼跟蹤、來(lái)自二級(jí)的預(yù)設(shè)定值處理、軋機(jī)速度控制計(jì)算等主要功能。通過(guò)PLC編程實(shí)現(xiàn)了各個(gè)控制功能的實(shí)際應(yīng)用,對(duì)動(dòng)態(tài)變規(guī)格進(jìn)行深入的研究、給出了軋制過(guò)程中變規(guī)格的改變時(shí)間點(diǎn)和參數(shù)的表格、得出了動(dòng)態(tài)變規(guī)格技術(shù)的調(diào)節(jié)方法、控制模式和計(jì)算方法。深入研究了自動(dòng)厚度控制和板形控制的計(jì)算方法,以提高終軋產(chǎn)品厚度和板形精度為出發(fā)點(diǎn),對(duì)液壓執(zhí)行機(jī)構(gòu)、厚度自動(dòng)控制系統(tǒng)、板形測(cè)量等內(nèi)容進(jìn)行了研究,確定了軋制過(guò)程中的厚度控制策略和板形控制策略,給出了前饋?zhàn)詣?dòng)厚度控制、Simith預(yù)估監(jiān)控自動(dòng)厚度控制、秒流量自動(dòng)厚度控制、加減速補(bǔ)償、偏心補(bǔ)償?shù)群穸瓤刂撇呗院涂刂扑惴�。在自�?dòng)板形控制系統(tǒng)中,通過(guò)對(duì)不同缺陷板形的分析、應(yīng)用彎輥力及基于二分法的乳化液分段冷卻控制模型,提出了控制精度高,計(jì)算快,穩(wěn)定性好的調(diào)節(jié)量的計(jì)算方法,并將研究成果用于生產(chǎn),取得了良好的控制效果。通過(guò)對(duì)酸軋機(jī)組生產(chǎn)線主要功能的仿真測(cè)試及現(xiàn)場(chǎng)調(diào)試,針對(duì)冷軋過(guò)程中的主速控制、厚度控制和板形控制進(jìn)行深入的實(shí)驗(yàn)研究,將總結(jié)研發(fā)的控制策略應(yīng)用于某酸軋機(jī)組生產(chǎn)線,具有較強(qiáng)的實(shí)用性,對(duì)我國(guó)板帶材生產(chǎn)控制水平的提高具有積極的促進(jìn)作用。
[Abstract]:The thickness deviation and shape accuracy of cold rolled sheet are the main measurement indexes of cold rolled strip, and the related control strategy has been a hot spot in the research of rolling process automation. On the basis of consulting a large number of related documents at home and abroad, the 1700mm software platform was selected based on the understanding of the main equipment parameters, production process and instrument configuration of a certain 1700mm acid mill group construction project. The hardware configuration, network configuration and programming of the whole automatic control system are determined. In the field practice, the main speed control system in the acid mill group is mainly studied. The main speed control system includes the strip tracking in the rolling mill area, the pre-set value processing from the second stage, the calculation of the mill speed control, and so on. The practical application of each control function is realized by PLC programming, the dynamic specification change is deeply studied, the table of changing time point and parameter in rolling process is given, and the adjusting method of dynamic specification technology is obtained. Control mode and calculation method. The calculation methods of automatic thickness control and shape control are studied in depth. In order to improve the thickness and shape accuracy of finished rolling products, the hydraulic actuator, automatic thickness control system and shape measurement are studied. The thickness control strategy and flatness control strategy in rolling process are determined. The feed forward automatic thickness control Simith predictive monitoring automatic thickness control, second flow automatic thickness control, acceleration and deceleration compensation are given. Eccentricity compensation equal thickness control strategy and control algorithm. In the automatic shape control system, by analyzing the different defects of shape, applying the bending force and the control model of emulsion section cooling based on dichotomy, the method of calculating the regulating quantity with high control precision, fast calculation and good stability is put forward. The research results are used in production and good control effect is obtained. Through the simulation test and field debugging of the main functions of the acid mill assembly line, the main speed control, thickness control and shape control in the cold rolling process are studied. The application of the developed control strategy to the production line of a certain acid mill has strong practicability and has a positive promoting effect on the improvement of the production control level of the sheet and strip in our country.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TG333;TP273

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